bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Performance-Based Seismic Levels of Nonstructural Components
Authors: Zhu Hai Hua , Zhao Guo
Published: July 2014

By research of the functional classification, seismic fortification performance objectives and quantified targets of non-structural components, according to the case of earthquake destruction in non-structural components, analyzed the reasons for the destruction . proposed three functional classification;Based on performance-based seismic design theory, proposed four level seismic performance objectives division and quantify seismic indicators of inter story displacement angle.
Seismic Analysis of 5-Span High-Speed Railway Continuous Girder Bridge
Authors: Guo Jian Hu , Lu Ming Qi
Published: July 2014

In recent years, with the development of high-speed rail in China,bridge has a higher proportion in the lines. Every year earthquake occurs many times accidentally in China. In order to ensure the target performance of bridges under earthquake action, we need to be based on the seismic analysis. Only have a deep knowledge of seismic effect discipline, can we enable to guide seismic design economically and reasonably and achieve predetermined target performance. Our study shows that the main vibration mode is a combination of the longitudinal or lateral translation or the revolution around Z axis. Under high-level earthquake, the maximal displacements of side piers and the fixed pier are larger, the maximal longitudinal pier shaft moment of the fixed pier (No.3) or No.5 pier in lateral direction is larger. But the value that exceeds the yield moment is small, which indicates that the development of plasticity is little. The longitudinal shear force of the bearings on the same pier are the same, bearings fixed longitudinally own the largest value. Even bearings whose lateral directions are fixed on the same pier own larger forces. Seen from average maximum values of bearings, all bearings are at the second stage, meeting the requirements that we don’t need to repair or slightly repair the bridge to make it act normally once after an earthquake.
Study on Seismic Performance of Irregular RC Frame with Specially Shaped Columns
Authors: Tang Jian , Wu Lang
Published: July 2014

According to the code and technical regulation, a irregular RC frame with specially shaped columns have been designed, which situated at the area of fortification intensity 7. Subsequently, the nonlinear dynamic analysis has been carried out for the structure by inputting ground motions in two directions. After summing up the calculation results, this paper have examined seismic performance of the structure under the rare seismic actions and given a primary evaluation on the structure to see if it achieves the predetermined seismic aims. It indicates that the structure designed the codes can achieve the predetermined seismic aims under the rare earthquake.
Research of the Shear Strength Test of the Soil on the Surface of Lop Nor Gobi
Authors: Yin Liang , Qiu Shi , Li Wen Jie , Hu Hao , Chen Zhong Kai
Published: July 2014

By Applying the Self-Made Field in-Situ Direct Shear Equipment, it Makes a Series of in-Situ Direct Shear Test Researches on the Soil （＜10cm）on the Surface of the Gravelly Gobi in Lop Nor, Xinjiang, Achieving its Shear Strength Parameter. the Conclusion that this Paper Gets Not only Provides the Key Parameters Needed for the Design of the Gobi Surface Soil Collection Machine and the Relevant Assessment Experiments, but also Offers the Reference for Evaluating the Similar Soil Shear Strength of the Gobi Engineering Construction.
Study on Tidal Current and Sediment for Dredging Project in Yamen Channel
Authors: He Jie , Shi Li Peng , Sun Ying Jun
Published: July 2014

Yamen channel is the important sea-route from Yinzhou Lake to Gaolan harbor in Zhuhai city through Huangmaohai Sea. Based on the recent hydrologic data and the seabed change, the numerical model is validated, and some advanced dredging plan for Yamen channel is simulated in the movement of tidal current and sediment, and the number of the sediment silting in channel is calculated. The result shows that there are some preponderance for the east channel in the tidal current and sediment, and the sediment is filling up in the mouth bars mostly. Moreover, the east channel has the potential to improve the channel standard, which can be developed firstly in the common condition.
Study on Damage of Concrete Dam Subjected to Combined Action of Earthquake and Slide Surge
Authors: Li Jing , Xu Qiang , Chen Jian Yun , Lu Guo Shuai
Published: July 2014

It is possible for hydraulic engineering located in high intensity earthquake area under the action of extreme disaster induced by earthquake and secondary slide surge. Several impact action models of slide surge were introduced and the damage evolution of concrete gravity dam subjected to combined action of different sequences of earthquake and secondary slide surge were studied based on nonlinear numerical analysis. The effects of different time sequences of combined earthquake and slide surge were compared and the safety performance analysis was performed. The results show that the combined form has great effects on the damage evolution law of concrete gravity dam.
Research on the Influence of Diking in Shallow Sea of Tangdao Bay on Marine Environment
Authors: Xu Yun Hai , Hao Xiao Hui , Dong Xin Mei
Published: July 2014

In the process of comprehensive treatment for the Tangdao Bay in Qingdao,the dikes need to be constructed firstly and then the construction for treatment can be started,in this paper,the author uses the two-dimensional mathematical model to analyze the change of the flow field in the water area of Tangdao Bay before,during and after the diking construction in simulation and analyze the influence on the marine environment after diking.By use of the diking method of throwing sand in jute bags,the new secondary pollution caused in the diking construction process can be prevented effectively and nice economic and social benefits can be obtained.
Accuracy Comparison for the Ocean Tide Models in Estuarine Tidal Prediction, the Pearl River Estuary
Authors: Zhu Lei , Yin Xiao Ling , Jiang Liao
Published: July 2014

Ocean tide models with satellite altimetry can simulate global ocean tides conveniently and accurately. However, it was not sure for them to have a same good performance in estuaties and coastal zones. To assess their accuracy in the Pearl River estuaries, tidal elevations were computed respectively by three models NAO.99b, OTPS and WWT, and compared with the hourly observed data. RMS misfits were calculated and the results suggest that the models are competent to demonstrate the basic time features of tides and the accuracy is not lower than that of traditional methods in some certain periods and areas. The models behave better in the mouth zones, especially in the open area outside, but in the upstreams have differences between dry season and flood season. At the entrances, compared with the river-dominated estuary, the models indicate more accurate estimations for the tide-dominated estuaries. WWT is recommended among these three models.
Application Status and Development Trend Research of Ecological Revetment in Jiangsu Inland Waterway
Authors: Zhang Jian , Zhai Jian Feng , Wang Xian Mei , Chen Jie
Published: July 2014

With the development of social economy and acceleration of constructions of inland waterway transportations, the adverse impacts on ecological environment are gradually known by people. Under the circumstance of protecting the environment we live, the generalization of technology of ecological bank revetment will be an irresistible trend of the development of inland waterway. Combining the examples of constructions of ecological bank revetments in inland waterways in Jiangsu Province, this thesis presents us the discussion on the structural style, technique features, as well as the application principles of ecological bank revetments, meanwhile puts forward the prospects of technology of ecological bank revetment.
Influence of Bridging Arrangement Location on the Mechanical Characteristics of the High-Formwork Support System
Authors: Liu Li , Liu Ya Nan , Wang Bo , Wang Ju Chao
Published: July 2014

Bridging play a important role in guarantee the stability of the high-formwork support system as a whole, its arrangement location will affect the force of the frame body. This paper used the finite element analysis method to compare the bridging arrangement location under the beam with the bridging under the board which was arranged according to certain modules. the results show, the arrangement spacing of the bridging under the beam is greater than the bridging under the board, but its frame body lateral migration is smaller, sharing part of the axial force of beam bottom rod at the same time, that means the bridging under the beam is more beneficial for the stability of high-formwork support system.
Determining the Degree of Mobility of Building Systems
Authors: Oleinik Pavel Pavlovich , Grigoryeva Larisa Stsnislavovna , Brodsky Viktor Isaevich
Published: July 2014

The present article examines the principles and aspects of building degree of mobility systems, the parameters defining the mobility. The dependences of determining the degree of mobility for different periods of construction.
Experimental Study of Effects of Operation Parameters on Efficiency of Vibratory Pile Driving
Authors: Zheng Hui Ping , Chen Lin , Wang Wei , Peng Li Qiang , Zhang Jia Yu
Published: July 2014

Vibratory pile driving is a common application method of piles foundation construction. A test bed was designed and built according to the principle of vibratory pile driving. The test bed is composed of excitation system, machinery parts and signal acquisition system. At first soil samples with different relative compactness and different saturation were made. Then tests of vibratory pile driving have been done by using the soil samples and the test bed. For each soil sample, time of pile sinking to the bottom of the container was recorded respectively under the condition of the exciting force with same amplitude. The time represents efficiency of vibratory pile driving. The former is shorter and the latter is higher. Relationships between efficiency of vibratory pile driving and exciting frequency, relative compactness of soil, saturation of soil were researched respectively by single factor method. The experimental results have guide meaning to vibratory pile driving construction.
The Study about Anti-Seismic Structures Stirrup Construction Blanking Length Theory Calculation
Authors: Li Hui Ling , Cui Xu Xiang , Zhao Yu Han
Published: July 2014

According to the new norm’s requirements and regulations for stirrup and related construction , deducing the theoretical calculation formula of stirrup blanking length of anti-seismic component in different levels. And analyzing it and the three empirical calculation methods comparatively, to find out the application conditions and scope of the empirical calculation method.
Components and Guidance for Constructional Rearrangement of Buildings and Structures within Reorganization Cycles
Authors: Volkov Andrey , Chulkov Vitaliy , Kazaryan Ryben , Fachratov Muhammed , Kyzina Olga , Gazaryan Robert
Published: July 2014

constructional rearrangement is a special case of «Rearrangement» phase in reorganization cycle. It is a set of measures, works and solutions implemented to improve operating characteristics of a construction facility. The main goal of CR objects is to bring them to the condition meeting the needs of users or requirements of regulatory documentation using the methods of architectural, planning and functional transformation.
Temperature Cracks of Concrete Engineering Analysis and Treatment Measures
Authors: Zhang Geng
Published: July 2014

In the building construction project occupies an important position in the concrete , cracks appeared in the concrete work is more common , the cause of cracks in the concrete temperature control and crack prevention measures such as on-site concrete temperature were analyzed .
Research of Hydrodynamics of Biofilter with Surface Feed
Authors: Gogina Elena S. , Yantsen Olga V. , Ruzhitskaya O. A.
Published: July 2014

The paper deals with the calculation of the contact time of waste water in the body of feed in the biofilter to determine the optimum settings.
The Single-Sludge Denitri-Nitrification System in Reconstruction of Wastewater Treatment Plants in the Russian Federation
Authors: Gogina Elena , Gulshin Igor
Published: July 2014

The paper investigates the optimal parameters of the single-sludge denitri-nitrification system and their compliance with the existing wastewater treatment plants in Russia
Design and Development of the Urban Water Supply Pipe Network Information System Based on GIS
Authors: Wang Xiao Hong , Liu Ya Jing , Wang Zheng , Zhang Wei
Published: July 2014

Urban water supply systems are the primary guarantee for life and enterprises to work orderly, according to the requirements of water resource department and the technical feasibility for the management system, the water supply pipe-network information system was designed and developed. The system was developed in C # language and SuperMap Objects as secondary development components. The applicability and weaknesses of the system was analyzed in order to provide better service for the water conservancy work digitally.
Analysis on Permeability of High Permeability Layer-Penetration Oil Influencing Factors
Authors: Fang Yu
Published: July 2014

This article from the permeability condition, half-rigid base type, material requirements, penetrating agent and emulsifier choice, permeation resistance, etc., through the analysis of the factors affecting the permeability of permeable layer of emulsified asphalt, and guided by the factors above, we developed and prepared a new high permeability permeate layer emulsification asphalt, the tests showed that it has good permeability.
Research on Method for the Weight Definition of Evaluation Indicator in Dump Landslides Based on Rough Set
Authors: Luan Ting Ting , Xie Zhen Hua , Liang Sha Sha
Published: July 2014

To combine expert scoring and rough set two kinds of subjective and objective methods, avoiding the indicator weight value is zero, making the expert scoring more efficient, objective. Using the expert scoring method based on rough sets in determining evaluation indicator weights of open-pit dump landslide. Slope density, cohesion, internal friction angle, slope angle, slope height, pore pressure ratio were selected for evaluation indicators of dump landslide. First of all, according to the landslide data collected, to calculate the importance sort of evaluation indicators of the dump landslide based on rough set theory. Then, scores of each indicator corresponds to a certain interval, five relevant experts were selected for scoring. Finally, the weight of each indicator was determined based on the average score. We can know from results, slope angle has the biggest influence on the dump landslide, followed by pore pressure ratio .Slope height and slope density have the minimal impact, which is coincidence with the actual situation of the dump, it shows that the method is more rational and effective .
The Design of Unascertained Fire Risk Evaluation System for High-Rise Civil Building Based on VB
Authors: Zhang Li Ning , An Jing , Zhang Qi
Published: July 2014

The study purpose is to design a comprehensive and visual fire risk evaluation system for high-rise civil buildings. Firstly, according to the characteristics of high-rise civil buildings, based on the hazards identification, combined with the international building fire codes, by using the typical accident causation analysis and other methods, the various uncertain factors affecting high-rise civil building fire are analyzed, and a fire risk evaluation tree for high-rise civil buildings was built. Then the unascertained theory is introduced, and a new visual fire risk evaluation system is designed for high-rise civil buildings based on the unascertained C-clustering model and the visual basic (VB) technology. At last, take the fire survey data of China 8 typical high-rise civil building as example, to make an empirical analysis. The research results can provide a reliable decision support system for the high-rise civil building fire risk management.
Deformation Monitoring and Prediction of a Reservoir Landslide in Sichuan Province, China
Authors: Han Bing , Hou Sheng Shan , Zhu Bin , Wang Li Chao , Li Ang , Ye He Jiong
Published: July 2014

Hydropower reservoirs change the local geo-environment greatly and often induce reservoir bank landslides. Hongyanzi landslide is a large rejuvenated ancient landslide in Pubugou Hydropower Station reservoir area in western China Sichuan Province. To study the deformation of the Hongyanzi landslide, we arranged multi-parameter monitoring using GPS, fixed borehole tilt-meter, osmometer, and crack-meter and collected continuous data of displacement and ground water table. The monitoring data, together with the reservoir water level data, show that the landslide deforms obviously during reservoir water level is falling, while it deforms little in the other period. Comprehensive analysis of the deformation and reservoir water level implies that the seepage force caused by water level difference between the inner and outer slope may be the key factor. Through regression analysis, the authors established a forecast model for landslide deformation based on ground water table and reservoir water level; thus concluded that reducing the falling velocity of reservoir water level may slow the landslide deformation down.
Case Study of Fire Risk Management of Tourist Hotels
Authors: Shiu Ruei Jiun , Cheng Shao Tsai , Liu I Tsen
Published: July 2014

Tourist hotels are part of service industry, thus fire safety issues are particularly important. Due to the complexity of the hotel’s construction, most of the tourists are not familiar with the environment. In case of fire it would be hard for them to evacuate the building. Therefore, this study collects and organizes documents, regulations and cases. By applying risk management this study summarizes the key items of the fire safety risk assessment application are: Whether fire evacuation facilities have been blocked and major risk items must be examined daily.
Design and Fabrication of Dynamic Thematic Maps Based on Flash
Authors: Xu Yi Xin , Yang Jun Wei
Published: July 2014

This paper exemplified by the dynamic thematic map under different data sources has explained scientifically the dynamic data storage in session objects, thematic map making by aid of the development's function of an object-oriented environment, a real-time map displaying. Experience has proved that the measure in flash platform which editing the geographical map, designing the map elements, doing movie clips, constituting them together,importing sound,etc, is very effective and more flexible.
Multi-Scale Classification Based on Remote Sensing
Authors: Li Peng Li , Ti Wei Ping , Li Jia Chun
Published: July 2014

Due to the broadly application of remote sensing imagery, there is an eager need for the classification of objects in the images. The multi-scale classification based on object oriented analysis is not a usual approach for image classification because the users of multi-scale classification do not know how to use the information from multiple scales to do multi-scale classification. Many users rely on some easily accessible tools. nearest neighbour classifier, to do multi-scale classification. The multi-scale classification classifies the images from different scales. The feature values of the object vary from different scales and they may have some trends against scales. These trends may help us to understand multi-scale classification better. This is the scale dependency of features. The difference between multi-scale classification and single-scale classification is not only multiple scales, but also the use of information from different scales. In order to explore the connection between different scales, the research of new features is necessary.
Linear Analysis of the Constitutive Relation of Concrete Elastoplastic Disturbance
Authors: Liu Jie Min , Wang Wei Nan , Liu Shuang
Published: July 2014

A linearization method of the uniaxial non-fitting nonlinear stress-strain curve given by the author of the paper is presented. The evolution equation between disturbances variable and plastic strain is derived based on Theory of Duality Disturbance. A simple method for concrete structures preforming elastoplastic analysis is presented (including softening analysis).
Study on Engineering Behavior of Non-Embedded Pile-Board Structure Crossing Over-Shallow-Embedded Metro
Authors: Zhou Chuan Bin , Su Qian , Bai Hao , He Yu , Zhao Wen Hui
Published: July 2014

It’s the first application of NEPBS crossing over-shallow-embedded metro in deep soft ground on new Shanghai-Hangzhou passenger dedicated railway (SHPDR) in China. It’s necessary to study the engineering behavior of NEPBS in complex geology field. Long-term observation systems were installed at the typical test sections of SHPDR; Combined with theoretical analysis model, the mechanical properties and deformation laws were analyzed and tested. Measurement results show that the test reinforcement stresses of loading plates and supporting beams are small; the test bending moments agree well with the theoretical bending moments, which are far less than the resistance bending moments; the piles improved the mechanical properties of deep soft ground, so the plate-soil contact stresses are small, the maximum value is 132 kPa; 45 days after the train operation, the post-construction settlement is 1.86 mm; the settlements of individual test points are not yet stable, but they tend toward stability, which can meet the requirements of settlement control of SHPDR.
Theory of Duality Disturbance of Elastoplasticity
Authors: Liu Jie Min , Liu Shuang , Yang Jia Liang , Sun Ya Zhen
Published: July 2014

The basic thinking, basic assumptions and basic formula system of duality disturbance theory are given in this paper. The theoretical and practical implications of duality disturbance theory are analyzed. The principles of the method of selecting the Stress-Strain relationships of relative non-disturbance material and relative complete disturbance material are given.
Application of Energy Method for Determining Loss Factor in Dynamic Systems with Hysteretic Damping
Authors: Smirnov Vladimir , Mondrus Vladimir
Published: July 2014

The article studies the energy method for determining loss factor due to hysteretic damping in systems of vibration and seismic isolation. Typical measure of damping is, where φ is the phase angle between stress and strain sinusoids [1], or damping constant δ ( [2, 3]). Both of these parameters are acquired through experimental investigations for each type of boundary conditions or element’s cross section. Proposed energy method is capable of loss factor ψ determination for different types of beams based on only one experimental investigation. This method is used in the paper to determine the damping ratio of elastic element in vibration isolation system of precision equipment.
High-Precision Structured Finite Volume Model for Numerical Simulation of Dam-and Dyke-Breach Flow
Authors: Ye Yun Tao , Liang Li Li , Zhang Shuang Hu , Jiang Yun Zhong
Published: July 2014

A high precision structured-based finite volume model for numerical simulation of dam-and dyke-breach flow was proposed. The model regarded the fully two-dimensional shallow water equations as the governing equations, and used the Godunov-type finite volume shock-capturing schemes HLLC to calculate flow flux. Its spatial and temporal accuracy were improved to two order accuracy using the slop limiter and predict-correct method, and the slope source terms and friction source terms were treated with central difference scheme and fully implicit method respectively. And then a robust procedure was adapted in the model to efficiently and accurately simulate the movement of wet and dry boundary and a method of high calculation efficiency was applied in the treatment of complex boundary. A popular example was used to validate the capability of the model. The result shows that the model can capture flow processes over irregular boundary accurately and shows good stability and accuracy.
Mixed Time Integration Parallel Algorithm for Nonlinear Dynamic Analysis
Authors: Fu Chao Jiang
Published: July 2014

The mixed time integration parallel algorithm for nonlinear dynamic analysis was presented by synthesising the implicit and explicit time integration techniques. The parallel algorithm employing mixed time integration technique was devised with domain decomposition. Concurrency was introduced into this algorithm by integrating interface nodes with explicit time integration technique and solving local subdomains with implicit algorithm. Numerical example was implemented to validate the performance of the parallel algorithm. Numerical studies indicate that the proposed algorithm is superior in performance to the implicit algorithm.
Failure Mechanism of Strip Footing on Geotextile-Reinforced Soil
Authors: Wang Zong Jian , Lu Liang , Zheng Bin
Published: July 2014

Several laboratory model tests were carried out on the bearing capacity of strip footings on reinforced soil foundation and reinforced slope. Compared with unreinforced cases, the deformation and failure of reinforced earth in different foundation conditions were monitored and analyzed. In order to visualize a failure mechanism when the ground reaches the state of limit equilibrium, a new numerical procedure was proposed. Assuming an elastic-perfectly plastic model, a smeared shear band approach and a modified initial stress method enable the proposed procedure to create an explicit collapse mode by the stress yield condition. On the basis of the development of failure mode and deformation of foundation, the bearing capacity of strip footings can be significantly increased by the inclusion of geotextile. And because the procedure considers the stiffness and deformation of the material, it may be applied to complex stability problems.
Horizontal Displacement of GFRP Bars and PC Strand Combination of Technology Supporting Piles
Authors: Li Xiu Hua , Gao Yan Yan , Yue Chen Xi , Hu Chun Qing
Published: July 2014

GFRP bars and PC strand composite pile is a new supporting piles, according to the engineering field test and analysis of experimental data prove that there is a significant effect on the control aspects of the horizontal displacement of supporting piles. Principle energy method can calculate the horizontal displacement of pile foundation pit in theory, by comparing the size of the horizontal displacement of the supporting piles of ordinary reinforcement, to demonstrate the feasibility of using GFRP bars and PC strand combination of techniques to reduce the horizontal displacement of excavation, provide reference for future engineering practice.
Influences of Cross Section Parameters on Bending Resistance of TSC Pile
Authors: Wang Xin Quan , Zhang Shi Min , Liao Juan , Huang Ying Sheng
Published: July 2014

Precast thin-wall steel and spun concrete composite pile (TSC pile) is a kind of new type of steel-concrete composite pile whose bearing performance is between steel pile and concrete pile. This article adopted FEM software to set up 3D TSC pile model to analyze its performance. Through the comparison with actual pure bending bearing experiment results, the model’s reliability was verified and the results showed that the model was reliable. Then lots of bending bearing capacity contrast calculations were conducted by using different cross section parameters (outside diameter, concrete pipe’s wall thickness and steel pipe’s wall thickness), and the influences of these parameters on bending resistance of TSC pile were discussed. The results showed that: with the increase of outside diameter, concrete pipe’s wall thickness and steel pipe’s wall thickness, TSC pile’s ultimate flexural bearing capacity increased. The influences of different parameters were not the same, outside diameter was the most important parameter, then concrete pipe’s wall thickness, and the last one was steel pipe’s wall thickness.
The Settlement Analysis of the Cement Fly-Ash Gravel Pile Composite Foundation of Baotou
Authors: Li Juan , Xu Yao , Yin Jun
Published: July 2014

This paper analyzes the causes of larger differences of final settlement calculated value of cement fly-ash gravel pile (CFG pile) composite foundation of Baotou with actual observed result of it. On the basis of analysis on a number of practical engineering data of Baotou, we modify the settlement formula of the CFG pile composite foundation and gain the modified coefficient applied to the settlement calculation of the CFG pile composite foundation of Baotou. The modified formula and coefficient proposed in this paper have a positive effect on the accurate settlement calculation of puting forward a more accurate correction formula and coefficient of the calculation of the CFG pile composite foundation of Baotou.
Analysis of Coral Reef Rock Mass Integrity Based on RMDI Method
Authors: Wang Jin Chao , Wang Chuan Ying , Han Zeng Qiang
Published: July 2014

At present, relatively few drilling surveys have been conducted on coral reefs, and comprehensive geological info on coral reefs is difficult to obtain. However, research of coral reef is of great importance to our development and exploitation of maritime resources. The survey of Chenhang Island in Paracel (Xisha) Islands saw China’s first usage of digital borehole camera technology, which resulted in a large amount of first-hand geological data. We have utilized the rock mass integrity index (RMDI) method in our analysis of coral reef integrity, and with reference to the rock mass classification standard, formulated the correlation between RMDI values and coral reef intactness, enabling the engineering evaluation of coral reef integrity. Through statistical analysis of camera data gathered along the CK2 borehole’s approx. 1km length, we performed an integrity evaluation of the entire borehole length using the RMDI classification, and created a coral reef stratum development diagram which is consistent with the actual cores. The results indicate: (1) the classification system based on RMDI is feasible in the integrity evaluation of coral reefs; (2) the coral reef integrity values obtained using the RMDI method are accurate; (3) borehole camera survey and statistical analysis are of great utility in the study of coral reefs.
Dynamic Mechanism Research on the Tectonic Activation of Anninghe Rift
Authors: Liu Jun Qi , Li Yu Sheng
Published: July 2014

Anninghe rift is located on the western edge of Yangtze Block next to Tibetan Plateau, along the axis of a continental paleorift zone, Panxi paleorift. Recent studies have found that an upward mantle convection system existed since the late Pliocene in the deep lithosphere of a long and narrow area controlled by Anninghe fault. Lithospheric temperature distribution in the area has characteristics similar to that in Baikal and other modern rifts. A mantle upwelling area was in a constant state of “pull-subsidence.” Brittle rock mass of the shallow crust cracked into the new secondary subsidence blocks. A thick lacustrine sedimentary sequence of continental subsidence type developed. These all indicate that Anninghe rift is in an obvious tectonic activation state. It is believed that the tectonic activation of Anninghe rift has been produced by both horizontal squeeze from a plastic flow of the upper crust and expansion from mantle uplift. The pressure from the plastic flow of the upper crust is slightly greater than the expansion stress from the uplifting of lithosphere. Under this specific geodynamic environment, whether the tectonic activation of Anninghe rift can continue depends on the thermal motion rate of deep mantle materials and the eastward migration of the crustal materials of Tibetan Plateau.
The Classification and Quality Evaluation of Rock-Mass Based on Limited Geological Information
Authors: Wu Xiao Guang , Yang Zhi Qiang , Gao Qian , Ba Duo Heng
Published: July 2014

This paper takes the No. 1 ore body of Jinchuan 3rd mining area as an example, obtains the corresponding relation of surrounding rock quality evaluation index and spatial location.Through RMR rock classification method , using Rockware modeling system and limited geological informations, the statistical analysis of RMR and RQD showed that the rock of No. 1 ore body belongs to III~V type. Its rock mass is between normal to unstable. Through Rockware modeling system, we established the 3D rock properties model of UCS, RQD and RMR, and found that in the 5 to 6 rows of east hanging wall exists rock not conducive to the block caving method which belongs to the type of V. Finally, Statistical analysis was made based on the numerical model of strata. We find that , basically ,the rock block has good cavability because it belongs to the IV type of rock masses. However when design blocks and manage drawing, we must pay particular attention to the III type of rock, which is of moderate stability, and the V type of rock, which is less stable. All of these make a useful exploration for the research of key technology in the field of the interior of the earth.
Fuzzy Mathematical Method of Slope Reliability Analysis in Surface Mine under Seepage Conditions
Authors: Yang Kun , Li Hua Xue , Han Hao
Published: July 2014

With the development of the economy, the increasing height of slopes in surface mine will seriously threaten the security in Coal Mine Area. Therefore, how to accurately evaluate slope stability has become one important problem. Based on reliability theory and fuzzy theory, a new reliability analysis method-fuzzy point evaluation method is presented in this paper. It is more practical and efficient for slope reliability assessment because traditional evaluation method doesn’t consider the fuzziness of parameters. As a typical example, we applied the technique to a surface mine case under seepage conditions, and made comparison with the traditional reliability analysis approach. The results indicate that the conclusions from both methods are essentially consistent. However, because considers the fuzziness of parameters, fuzzy point evaluation method has more actual instructive significance comparing with the traditional mothod.
Influence of Density on Mechanical Properties for Coarse-Grained Soil Based on Percolation Theory
Authors: Huang Yi Dan , Yao Ling Kan , Wang Jian
Published: July 2014

Coarse-grained soil is the main material of embankment dams, it is one of the major study objectives of soil mechanics. This paper introduces a method that utilizes percolation theory to explore the influence of soil density on mechanical property from the micro perspective. First it proposes the concept of stress network among particles; then it introduces the method of applying renormalization group theory for deducing; finally it derives the conclusion that in a uniform coarse-grained soil, the porosity and the mechanical property present a relationship of linear.
The Influence of Preparation Method and Electrode on Properties of Carbon Fiber Electrically Conductive Concrete
Authors: Lai Yong , Liu Yan , Ma Dao Xun
Published: July 2014

This paper studied the influence of preparation method and electrode on properties of carbon fiber electrically conductive concrete by testing flexural strength and electrical resistance. Carbon fiber electrically conductive concrete is prepared by using dry mix method and wet mix method, the electrodes of which are stainless steel mesh and stainless steel sheet. The results show that the wet mix method of carbon fiber electrically conductive concrete is better than the dry mix method. The stainless steel sheet used as electrode in electrically conductive concrete is better than the stainless steel mesh. The long-term electrical resistivity of carbon fiber electrically conductive concrete is a constant value.
Research of Guangxi Longsheng Zhuang Residential: Case Study of Longji Village
Authors: Li Da Yao , He Jiang , Li Yan Qing
Published: July 2014

Longji Zhuang village is a typical stem bar building villages, its mountainous subtropical monsoon climate as the main geographical terrain and climatic conditions, as well as unique ethnic customs of the local people's production and life have a profound affected. The paper through analysis of characteristics of Longji Zhuang village’s stem bar building , it’s architectural features and it’s building structures and building materials; to make a further understanding of the living conditions of the ancient Zhuang Village residential architectural forms and residents. Hoping to provide reference for the development of traditional residential of Zhuang people in Longji Village. Keywords: Guangxi, traditional residential of Zhuang people, the stem bar building,traditional architectural culture, Longsheng
Research on Axial Compression Performance of Steel & Steel Pipe Reinforced Concrete Columns
Authors: Li Yun Yun , Yang Bao Sheng
Published: July 2014

Through axial load bearing capacity test of eight steel & steel pipe reinforced concrete composite columns, the working mechanism, the ductility and the ultimate bearing capacity of the composite columns were studied, and the main factors affecting the performance of the composite columns are discussed, including concrete strength and the ferrule coefficient. The results show that the collaborative force of steel, steel pipe and concrete can effectively improve the bearing capacity of the columns, delay or inhibit the spread of oblique shear cracks in concrete and improve the ductility of the columns.
The Relationship between the Water Absorption Capacity of SAP and the Amount of Entrained Water in HPC
Authors: Guo Fei , Wang Wen Bin , Liu Jia Ping , Tian Qian , Li Lei
Published: July 2014

Using SAP is considered as an effective method to counteract autogenous shrinkage of HPC, but the research on the relationship between the water absorption capacity of SAP and the amount of entrained water in HPC is still unclear. In this paper, 6 SAPs with different water absorption capacity were made to discuss the workability and mechanical property of HPC with SAP when different amount of water were entrained. The results showed that the bigger distilled water absorption capacity of SAP is, the smaller the fluidity of cement paste mixed with SAP is, SAP used in HPC should own bigger synthetic pore fluid absorption capacity and smaller distilled water absorption capacity. When 0.03g water/g cement was entrained, the slump of concrete mixed with 4#, 5# and 6# SAP is the same as the slump of ref concrete, and the compressive strength of concrete mixed with 4#, 5# and 6# SAP is also the same as the compressive strength of ref concrete.
Strength Development and Pore Structure of Alkali-Activated Slag Cement in Bittern Environment
Authors: Song Qiang , Zhu Jian Hui , Zhang Xiao Yan
Published: July 2014

The effect of bittern on alkali-activated slag (AAS) cement and OPC was studied by testing on the strength and pore structure of the specimens stored in artificial bittern solution at certain periods. The experimental results show that the (AAS) cement exhibits excellent resistance to chemical attack of bittern. The significant increase of strength of (AAS) mortar stored in bittern solution was observed with the soaking time, and the strength increases very quickly before 27 d. But the strength of OPC decreases fast after17d. The more the contents of NaOH activator in AAS cement, the more the strength gained. And the more the contents of activator, the less porosity is. Curing the AAS cement in bittern environment leads to a reduction in the total pore volume and to a refinement of the pore structures.
Study on Bamboo Particleboard Bambooceramics - Bamboo Particle Types and Resin Content Influence on Properties of Bamboo Particleboard
Authors: Du Chun Gui , Li Ren , Zhang Wei Gang , Li Guang Yao , Sun Fang Li
Published: July 2014

The particle types and resin content influence on properties of bamboo particleboard were studied in this paer. The purpose was to find a better manufacturing technology of bamboo particleboard for preparing bambooceramics. The results showed: bamboo particleboard manufacturing using precise shaving bamboo particles were more suitable for preparing bambooceramics than rough shaving bamboo particles; resin content had considerably influence on properties of bamboo particleboard, its mechanical properties can greatly improve with increasing the resin content of bamboo particles.
Study for Permeability of Cement Concrete Pavement with Nano-SiO2 as Admixture
Authors: Sun Ling , Qi Guang Yuan , Zhang Xiao Qin , Zhan Xiao Song
Published: July 2014

With the study of permeability of plain concrete and concrete mixing with fly-ash and concrete mixing with fly-ash and nanoSiO2 as admixture for resistance to chloride ion, the outcome of the test goes that the permeability of concrete with nanoSiO2 for resistance to chloride ion will be increased considerably.
Research on the Application of Light Steel Structure of ASA (The Coal Ash Spume Concrete) Series Plate in Architectural Design
Authors: Yu Tian Qi , Wu Yi Jin
Published: July 2014

Researching and Analyzing types and features of ASA plates , the advantages of modular production methods, prefabricated construction methods and energy saving of ASA plates with light steel energy efficient building systems can be initially drawn ASA series plates could be applied well in the civil design, public buildings and industrial buildings.
Size Effect on the Deformation Characteristic and Shear Band of Granular Material Based on Hypoplastity
Authors: Xiong Bao Lin , Lu Chun Jiao
Published: July 2014

The deformation characteristic of granular material is important. It is important factor to analysis the bearing capacity and the thickness of granular material footings. There are many factors influence the deformation of granular material, such as material characteristic, content of water, degree of compaction, test method, etc. For analyzing size effect on the deformation characteristic of granular material, hypoplastic constitutive model considering void ratio is introduced. The influence of an initial void ratio, pressure and a mean grain diameter on the deformation is investigated by polar quantities: rotations, curvatures, couple stresses and a characteristic length. Thus, the influence of density and pressure on the initiation of shear bands can be investigated with a single set of constitutive constants.
The Research on Development Strategies of Residential Industrialization in China
Authors: Wang Rui , Zhang Wei
Published: July 2014

As residential industrialization is still in the primary stage in China, it has become the important and difficult points that must be worked out immediately to realize the modernization of housing industry to analyze and resolve restricting elements in the development of residential industrialization. The premise and safeguard is policy specification, the basis and important support is technology system, the significant method is production models while the key point is that people understand and accept industrialized residence.
Architectural Culture of Guangdong Merchant Hall in Pingle
Authors: Wang Li , Gan Yan Jun , Li Zhen , Qiu Jun Hao
Published: July 2014

Guangdong Merchant Hall in Pingle, is one representative of the Guangdong Merchant hall in Ming and Qing dynasties. The Lingnan hall building, holds rich humanities, arts, science, and historical value. Through site selection, layout, architectural form and architectural art features enable people to have a comprehensive understanding of the establishment and development of the Guangdong Merchant Hall, thereby contributing to the locality of Lingnan architectural style for further study.
Critical-Point Control for Building Life-Cycle Energy Efficiency
Authors: Du Qiang , Yin Chao Yue , Zhang Qiong Li , Chen Yi Xiu
Published: July 2014

Based on a systemic analysis of the factors which might influence building energy efficiency, a cluster of corresponding indicators are proposed and screened for different stages in the whole life-cycle of buildings. A questionnaire survey was conducted to confirm the weights of the selected indicators and identify critical control objects for building energy saving. This research provides the methodology for selecting appropriate control objects for building energy-efficiency under various management scenarios.
Amplitude Temperature of Steel Claddings Exposed to Solar Radiation
Authors: Fujita Masanori , Maeda Kazutaka , Terada Shinpei , Hanya Koji , Abe Ken , Utsumi Katsuhiro
Published: July 2014

Steel claddings such as a long spanned roof have been damaged by metal fatigue affected by wind load or thermal load. To reduce damage of steel claddings, it is necessary for design and construction to consider metal fatigue influence. This paper shows a basic data for steel claddings to evaluate fatigue damage caused by cyclic thermal expansion exposed to solar radiation. Specimens are fabricated which specification are steel sidings and steel sandwich panels, and surface temperatures of specimens are measured throughout the year. Then, amplitude temperatures and their cyclic numbers are evaluated.
Design of Data Acquisition System of Vibration Signal for Civil Engineering Structure
Authors: Sun Wei , Zhang Ying , Jiang Shao Fei
Published: July 2014

A vibration signal acquisition system was designed based virtual instrument technology. The process and principle design of structure vibration signal acquisition system based on LabVIEW software and CompactRIO hardware were discussed in detail. Finally, system test was conducted by a three story steel frame structure. And the test results were compared with traditional instruments system. The experiment showed that the data acquisition system of structure vibration signal which based on CompactRIO is precise and reliable in measurement results, and can realize multi channel synchronous data acquisition, storage, and support the real-time online data filtering and spectrum analysis and so on.Compared with the traditional platforms, the system proposed in the paper has short development cycle, low cost, user-defined functions, rugged, portable and other advantages. It can be widely used in complex and special building environment, so it will have a broad application prospect in the field of SHM.
Study on the Impact of PMO for Multi-Project Management of Contracting Construction Enterprises — Based on Structural Equation Model
Authors: Qi Shen Jun , Zhang Yun Bo , Wu Jing Jing , Chen Wei , Cai Jia Zhong
Published: July 2014

13 key factors, which affected the ability of Project Management Office (PMO) and multi-project management, were extracted through literature reading and expert interviewing. Based on three aspects of assumptions, Structural Equation Model was used to build the structure model that PMO influence on multi-project management of contracting construction enterprises. The relationship among PMO, Program and Project Portfolio were analyzed on the basis of questionnaire survey on the 238 the national excellent project manager and high-level business executives. The results show that the most important function of the PMO is coordination management, the second is the risk forecasting and management, the third is information processing and finally is resource allocation. Consequently, the PMO can support the multi-project management, the Influence degree of PMO for project portfolio is the largest, followed by the program management, and single project management is the third one. With the increasing of project amount, difficulty and complexity, and the role of PMO is more significant.
The Randomness of the Critical Chain Technology
Authors: Yan Wen Zhou , Ren Ge Ye
Published: July 2014

Randomness is an accidental, an event with a probability demonstrated uncertainty. We know CPM method does not consider the resource constraints. This deficiency can be solved by the critical chain technology. We can get more than a critical chain. In order to solve this problem, We can use the optimal method of stochastic process to schedule critical chain.