bluuebunny/crossref_metadata_2025 huggingface dataset:
Seismic Strengthening of Primary and Secondary Schools in the Region of High Seismic Intensity
Authors: Hou Wei , Zhou Xue Feng , Chen Xiang
Published: August 2011

An important issue our engineers and technicians met is that how to do safe identification and earthquake resistant strengthening of the primary and secondary school buildings after WenChuan earthquake. The paper reviewed entirely the quality detection, identification and strengthening design of the primary and secondary school buildings in Xi'an. In this paper, the influences of the construction progress, complexity and construction period are all taken into account in order to choose the corresponding seismic strengthening method which are based on the seismic qualification and on-the-spot survey. Problems existed in project design are presented in this paper, which can be taken for example on similar engineering.
Analysis the Cable Replacement Method of Tianjin Yonghe Bridge
Authors: Yao Wen Juan , Yang Wu , Liu Xiao Yu
Published: August 2011

Taking Tianjin Yonghe bridge for example, the finite element method is adopted to simulate each stages of cable replacement process, the dates of tension, the alignment of main beam and the change of stress before and after cable replacement are compared and analysed, The measured value is greatly consistent with calculated value, Stress state of the bridge has been greatly improved, the weight of main beam bearing by the cable will be shared by a few closed cable after unloading, so the cables which are more serious corroded should be replaced.
Specialty Appraisal of the Movement of the Expansion Joint of Jiangyin Bridge Based on the Health Monitoring Technology
Authors: Fan Ye Hua , Chen Xiong Fei
Published: August 2011

Aiming at the upgrading project of the structural health monitoring system of Jiangyin Bridge, the moving specialty parameters such as the vertical displacement, corner joints, and the synchronization of the two sides of the bridge expansion joint are monitored and acquired by the means of the long real-time health monitoring technology. Based on a large number of measured data, the temperature-dependent regression equation between the movements and the structure temperatures of the bridge expansion joint is established, which could provide much quantitative support and scientific guidance for the daily management and maintenance of the expansion joints.
Study on Urban Road Intersection Evaluation Based on Fuzzy Analytic Hierarchy Process and Cluster Analysis
Authors: Yu Jing Fei , Wang Li
Published: August 2011

This paper choices eleven evaluation index to establish fuzzy hierarchy evaluation index system of urban road intersection based on basic facilities, operation conditions and environment level of intersection. Comprehensive evaluation modal of urban road intersection is established by calculating relative weight of every layer through applying to triangular fuzzy function. Ten intersections obtain comprehensive evaluation based on the modal established. These intersections have been clustered three clusters by K-Means Cluster method finally. It is help to manage and control the similar intersections according to cluster result.
Deformation Mechanism of the Mountain and Research of Reinforcement in Yanchi Mountain
Authors: Wang Rui , Li Ke Jian , Liu Qiu Yuan , Qiu Yan
Published: August 2011

Mining activities would generate large scale goaf, and the existing of goaf makes the mountain body produce great distortion. Therefore, it has become a kind of serious geological hazard. Based on the concrete conditions of Yanchi Mountain, the simulation with ANSYS was conducted for analyzing the stability of goaf, mine pillar and roof, which would find out the high stress zone and plastic zone of the goaf. Therefore, the conclusion that inadequate of the pillar strength is the main cause of the mountain deformation is drawn, and a new strengthening method which is to strengthen the mine pillar and to increase new mine pillars is put forward on basis of the conclusion.The results show that the strengthening method has an obvious effect, and it reduces the workload and the cost, which also provides very significant evidence for the future studying.
Study on Fuzzy Comprehensive Evaluation of External Wall Thermal Insulation and Energy-Saving Technology
Authors: Zhang Shu Guo , Fang Yan , Jia Jun Ju
Published: August 2011

The current evaluation process of architecture external wall thermal insulation energy-saving has met the problems such as information incompleteness and fuzziness. In order to solve the problems, the fuzzy comprehensive evaluation method is used, and the external wall thermal insulation energy-saving technique evaluation index system is set. And the method is adopt to compare between the walls using and not using the technology. The result shows that the evaluation of the external wall using thermal insulation energy-saving technique is obviously better than the result of the external wall not using the technique, so the thermal insulation energy-saving material should be promoted and applied nation-widely.
Mode I Fracture Toughness of a Tri-Layered Structure with Interfacial Crack
Authors: Her Shiuh Chuan , Su Wei Bo
Published: August 2011

Analytical model based on the Bernoulli beam theory and fracture mechanics have been developed to predict the fracture toughness of a tri-layered beam with interfacial crack. In this work, a double cantilever beam test is conducted to determine the fracture toughness of mode I. The strain energy release rate for the double cantilever beam is expressed as a function of the material properties and thickness of the tri-layer beam. The analytical solution is validated with the finite element result. Good agreement demonstrates that the proposed approach is able to provide an efficient way for the calculation of the fracture toughness of a multi-layered structure. The effects of material properties and thickness between the adjacent layers of the interfacial crack are examined through a parametric study.
Effective Algorithm for Inner Forces Influence Surface of Hexahedral Elements Models
Authors: Zhou Xiao Yong , Li Na , Xu Bing Shuang
Published: August 2011

Based on reciprocal theorem of work, and the physical geometry equations of finite element, the paper presented a new method to calculate influence surface of inner forces for hexahedral element finite models; it can be used to calculate directly in the solid element finite model. It possesses the characteristics of clarification and simplicity. Compared with the static method and mobile method, it can improve computing precision, and also reduce the amount of the calculation.
Effect of Environmental Factors on Cd Accumulation of Tagetes erecta L.
Authors: Fu Sha Sha , Xu Xin Fa , Li Rong Fang , Tai Pei Dong
Published: August 2011

A hydroponic culture experiment was conducted to study the effect of temperature and nutrient level on Cd accumulation inTagetes erectaL.. In the first experiment, shoot Cd accumulation and transpiration rate at different temperature was determined. Cd accumulation was lower with higher transpiration rate at 35°C than that of 25°C or 15°C with lower transpiration rate. In the other experiment, cadmium accumulation of plants varies significantly under the condition of different nutrient supplication. Contents of Cd in roots were not high, but the contents of Cd in shoots were the highest when plants were cultivated in 0.05-fold Hoagland’s solution. Roots Cd accumulation decreased as the concentration of single nutrient element (N, P, S) decrease or absence, and shoots Cd accumulation decrease in the condition of sulfur deficiency and sulfur absence. It was shown that transpiration is not the primary factor affecting Cd accumulation inTagetes erectaL, but growth rate of plants has certain correlation with Cd accumulation; contents of Cd in roots are most affected by the supplication of nutrient elements, yet shoots accumulation is relatively lagging behind; different nutrient element has some different effect on Cd accumulation, and the effects of nitrogen and sulfur on the shoots Cd accumulation are the greatest.
Fatigue Properties Estimates of Orthotropic Deck on Steel Bridges
Authors: Xia Hai Bing
Published: August 2011

For estimating the fatigue properties of orthotropic deck bridges, a finite element analysis method was provided. In the method, the models of orthotropic decks steel bridge were established by using Midas and Ansys finite element software respectively, the Midas software has tracked two kinds of live load positions that corresponding to maximum and minimum stress of the fatigue checking points, and the most unfavorable loads were loaded to the Ansys model, then the stress ranges of fatigue checking points were obtained and the fatigue properties of the bridge were estimated. The results show that, it is feasible that using the new finite element method to checking the fatigue performance of orthotropic deck steel bridge.
Evolution: The Development of Intelligent Double-Skin Facades
Authors: Liu Chang An , Chen Xin Mei , Wei Yan Yan
Published: August 2011

The use of intelligent double-skin facades, sometimes referred to as "double facades", is attracting increasing amounts of interests from the architects throughout the world, due to the characteristics such as ecology, durability, use of natural resources, etc. This paper is written from the architectural history point of view, and gives a brief description about the development of the intelligent double-skin façade systems, from the old storm windows to modern double-skin systems, and suggests further research possibilities in this field.
The Main Motivity Analysis of Deployment Process of Astromesh
Authors: Chen Guo Hui , Xiao Yong , Lei Yan Ni
Published: August 2011

The deployment process of Astromesh is analyzed and the basic unit is defines, based on which overall coordinate system of Astromesh and the units local coordinate system are established. The role of synchronous drive mechanism hinges and motor are analyzed in the unit local coordinate system, and whose action principle is stated in the form of parameter.
Risk Evaluation of Debris Flow in the Cheng-Hai Valley of Yunnan Province
Authors: Guo Ting Ting , Xu Shi Guang , Yang Zhi Quan
Published: August 2011

The area of the Cheng-hai valley, located in the centre of Yongsheng county Lijiang city Yunnan province, is an area with dense and frequent debris flow disasters due to unique geology, geomorphology and landform conditions. After in situinvestigation and analyze the present data of these debris flows, we selected six factors, such as catchment areas, the length of main gully, average longitudinal slope of main gull, estimated outflow of every time, potential reserves of solid materials, percentage of grain diameter of solid materials above and beyond 200mm, as main factors for evaluating the risk degree of 6 chosen representative debris flows in the Cheng-hai valley. The multiple-factor comprehensive evaluation method is applied to evaluate the risk degree of debris flow and then the evaluation result shows a good correspond with the practical situation, i.e. this method has a valuable application foreground.
Resistance to the Penetration of Chloride Ions of Concrete with Intensified Recycled Aggregates
Authors: Chai Wen Ge , Li Wen Li , Gao Wen Xia
Published: August 2011

In order to study on methods for and effect of improving performances of recycled concrete, this paper has adopted the recycled aggregates intensified by dipping in the chemical grout, on which basis, the recycled concrete is prepared through the double admixing technology, i.e. mixing of the high-quality mineral admixture and the high-efficient water reducer. The chloride ion permeability of the recycled concrete is researched in the laboratory. In the test, the electric flux, the total chloride ion content and the free chloride ion content at different depths of the recycled concrete have been obtained. The research has shown that dipping in the chemical grout is an effective way to intensify recycled aggregates and that recycled concrete prepared with the intensified recycled aggregates, high-quality mineral admixture and high-efficient water reducer features favorable permeability resistance.
Oil Film Temperature Field Simulation of Hydrostatic Center Rack of Heavy-Duty Horizontal Boring Lathe
Authors: Shao Jun Peng , Li Chong , Xu Xiao Qiu , Yu Xiao Dong , Wu Bo , Yin Chao
Published: August 2011

In order to research the temperature distribution law of the interstitial oil film on the hydrostatic center rack, the interstitial oil film on the hydrostatic center rack is taken as the research subject. Firstly, a three-dimensional model of the interstitial oil film is built by UG software. Secondly, the constructed three-dimensional model is meshed by ICEM CFD software. Lastly, the constructed finite element model is simulated using the finite element analysis software ANSYS CFX. The results of the simulation show that the temperature near the oil seal edge is higher than oil chamber and oil-returning slot. If the shaft parts rotate clockwise, the temperature of the right high-temperature zone is higher than the left. The research results provide a theoretical basis for the research on the thermal distortion of the middle pillow.
Design of Convexity in Rubber Coating Covered on Driving Drum in View of the Ceramic Tile Buffing Machine
Authors: Shao Jun Peng , Liu Jia , Wang Yun Fei
Published: August 2011

To solve the problem which the driving torque and the driving power are insufficient in the main operation of the ceramic tile buffing machine, by the analysis of the driving drum’s force, propose a new measure of the drum’s covering-layer. The sphere coronal structure with convexity is designed on the surface of the covering-layer. Through the analysis of the force in the drum’s operation, it proves that this method could improve the friction coefficient on the surface of the drum, increase the friction driving force, so as to increase the driving torque and driving power.
Numerical Simulation Analysis for Foundation Settlement Sensitivity on LiShuiGou Aqueduct of ShiMen Reservoir
Authors: Zhang Di
Published: August 2011

The foundation of LiShuiGou Aqueduct of ShiMen Reservoir is composed of long-short and large diameter piles, with great diameter and length differences between these new and old piles. Numerical simulation of the FEM software ADINA and the orthogonal experimental design theory are applied to explore the sensitivity of long-short pile foundation settlement, under different pile length, pile diameter, pile space, and soil constitutive model, with foundation settlement as the evaluation index. The results show that the descending order of the sensitivity of four factors is: pile length > pile diameter > pile space > soil constitutive mode. Some scientific and rational approaches and basis are consequently provided to explore the most effective reinforcement measures and design method for long-short and large diameter piles.
Research about Influence of Loess Cave Dwelling’s Leg Width on Safety Factor by Strength Reduction Method
Authors: Guo Ping Gong , Tong Li Ping
Published: August 2011

The loess cave dwelling are very common along the Yellow River in China，which are really green building. This paper focus on the influence of cave leg’s width on the safety factor. Abaqus software and Strength Reduction Method are used. Results show that existing cave leg width is safe enough.
National Level Infrastructure Condition Assessment: Principles and Metrics
Authors: Lu Yu Jie , Jiang Shao Hua
Published: August 2011

Infrastructure provides the key facilities to the nation’s economic prosperity, public safety and security, and social development. To improve the physical condition of infrastructure, the status of a nation’s infrastructure should be continuously and properly evaluation. This study discusses the principles of national level infrastructure condition assessment, and then proposes a comprehensive assessment metrics in fifteen infrastructure objectives. The result provides a practical guideline by which a nation can conduct a viable infrastructure assessment.
Study of Aseismatic Design Method of Frame Infill Wall Structure Based on System Capacity Concept
Authors: Yue Li , Cai Hong Ru , Zhao Shi Chun
Published: August 2011

In this paper, the concept of system capacity is expounded from the perspective of the system theory. The selection of control index during the aseismatic design of frame infill wall structure is discussed, and the critical techniques of the system capacity method are proposed. Finally, the process of the aseismatic design method based on system capacity is developed.
Application of Bent Type Anti-Slide Pile in Red Bed Slope Composed with Accumulation
Authors: Li Xiao Ning , Wang Huan Long
Published: August 2011

Accumulation strength has poor ability in red bed slope and its self-stabilize is lower than normal slope. Red bed slope composed with accumulation can cause more disaster risks for highway slope engineering. As the main treatment structure, anti-slide pile can provide huge anti-slide force, and achieve better results. Bent type anti-slide pile is combined by horizontal structure. For thicker accumulation area and larger slope thrust area, project can get obvious treatment effect by bent type anti-slide pile. The paper analyzed the characteristic of red bed slope composed with accumulation and bent type anti-slide pile. A case of Guangyuan-Bazhong Expressway K63 Hejiamiao Colluvial Clay is showed below, in order to explain good treatment effect by the structure in slope engineering. At last, construction technology of bent type anti-slide pile suggested by the project.
Experimental Research and Numerical Analysis on the Law of Deteriorated Performance for R.C. Frame Structure with Seismic Damages under Elevated Temperature (part II)
Authors: Miao Ji Jun , Zhu Qiong Qiong , Liu Yan Chun , Qi Bo , Wang Dian Wu
Published: August 2011

The cracks were pre-settled to the R.C. frame structure caused by earthquake which was defined as the damage index ω during the modeling process with analysis software-ANASYS. The temperature field contour curve were calculated for the column and beam, the law of deteriorated bearing capacity with time for the R.C. frame structure under elevated temperature were brought forward，which can adapt to R.C. frame structure with different damage index ω caused by earthquake.The relationship between ω and deteriorated bearing capacity for R.C. frame structure was also given, which was proved to be effective and correct according to comparison with the data recorded from the elevated temperature experiment designed by author.
Analysis of Influencing Factors of Welded Turnout Slab with Convex Block of Ballastless Track on Bridge
Authors: Hao Yuan Xing , Dai Feng , Yang Rong Shan
Published: August 2011

To figure out the structure and influencing factors of welded welded turnout slab convex block of ballastless track on bridge, according to the characteristics of force and displacement of welded turnout on bridge, the turnout-bridge-platform integration computation model was established by finite element method. Taking the ballastless turnout on a continuous beam bridge as the example, the longitudinal force and displacement of the bridge and parts of the turnout was obtained by the means of changing the numbers of slab, the stiffness of convex block support and the temperature range of slabs. The calculation results indicate: using three slabs is reasonable for the ballastless turnout on bridge; The stiffness of convex block supports on slabs should be set between 250kN/mm and 300kN/mm; Since the change of longitudinal force is very large, while the other parameters change little, with the change of the temperature range of slabs, slabs in turnout should be strengthen.
Study on Conceptual Planning of Waterfront District in Hanyang
Authors: Zheng Wen Hui
Published: August 2011

Nowadays, urban construction is developing vigorously in China, planning and development of urban waterfront is more valued. The paper comprehensively elaborates conceptual detailed planning of urban waterfront in parrot islet from angles of project overview, detailed planning of integrated plot along the river, road system, functional district of river beach, night scene and lighting design, social and environmental benefits. Through analysis of the case, the paper attempts to explore effective work pattern and research method regarding planning of urban waterfront under new situation in order to achieve the aims of improving ecological environment, promoting sustainable development of the city, building characteristic landscape, and elevating artistic quality and level of the city.
Experimental Study on the Compression Performance of GFRP Bars under Different Corrosion Environment
Authors: Sun Li , Mi Xiang Qian , Zhang Xin Shou
Published: August 2011

Glass fiber reinforced polymer (GFRP) bars were exposed to the solutions of different alkaline and chloride salt concentrations in order to examine the influence of different corrosion environment on the compression performance of GFRP bars. The results showed that the stress strain curves of the GFRP bars could be expressed as lines approximately. The compressive strength and elastic modulus gradually decreased with increasing of the corrosion time, and the decrease was more obvious in alkaline corrosion environment.
Applying the Principle of Mixed Variables Solve the Problems of Forced Vibration of the Calculating Rectangular Plate by Uniform Load
Authors: Wu Chong Fu , Liu Shu Hong , Chen Ying Jie
Published: August 2011

In this paper, applying the principle of mixed variables solve the problems of forced vibration of the rectangular plate by uniform load , the stable solution of the cantilever plates by uniform load can be worked out. The results by calculating not only it have academic value, but also it can be directly referred in the actual work.
Empirical Analysis of Environmental Innovation and Economic Growth in Western Region
Authors: Zhao Jing Feng
Published: August 2011

This article chooses the evaluation index from The Report of Sustainable Development Strategy of China and quantifies the environmental innovation level. We exploit the data of western region from the year 1995 to 2010 and forecast the regional environmental innovation level in 2011 and 2012 through ARIMA model. The result of prediction indicates the tendency of stable increase of this level. We then use unit root test, co-integration analysis and Granger Causality to test the relationship between the environmental innovation and economic growth. The result shows the long-term equilibrium relationship between them; environmental innovation has positive external spillover effects on economic growth and they follow the Granger Causality. The results of empirical analysis comply with the situation of societal and economic development of western area. Finally, the relevant policy recommendations are proposed.
The Path Choice of the New Rural Area Construction from the Perspective of Low-Carbon Rural Areas
Authors: Zhao Jing Feng
Published: August 2011

If China intends to develop the low-carbon economy and realize the goal of energy conservation and emission reduction, it is essential to solve the food safety problem due to great volume of pollution and emission which is commonly produced by rural production and life. The rural areas play a vital role in China on account of its taking up more than half of China’s population as well as territory. In this article, the concept of low-carbon economy is to be combined with rural areas’ situation; the author is to determine a path for the construction of new rural area from the angle of Low-carbon rural areas.
Comprehensive Evaluation Based on AHP-Fuzzy about the Conception of Underground Container Transportation Lines in Shanghai
Authors: Zhang Cheng , Wang Si Wei
Published: August 2011

Through the research and analysis of Shanghai Port Container transportation capacity, we can see that the construction of underground container transport system is important to transfer Shanghai into an international hub. Combined the functional orientation of the concept program of underground container lines with the underground characteristics of the container transport system, a system of evaluation target has been set up. Sorted the concept lines by using AHP-Fuzzy comprehensive evaluation, the result can reflect the actual situation of concept lines objectively, and can also provide optimizational service for the concept program of underground container line.
Optimal Gold-Ball Bonding Parameters Determined from Ball Shear and Wire Pull Tests
Authors: Tsai M. Y. , Liu R. G.
Published: August 2011

In microelectronic packaging, wire bonding is the preferred method used to form electrical interconnections between integrated circuit chips and a substrate. However, ball lift (i.e., when a ball bond becomes completely detached from the chip) and wire breaking are critical problems that degrade the quality of a wire bond. In this study we considered three parameters of gold-ball bonding—ball bond thickness (7–22μm), gold-wire loop height (180–300μm), and gold-wire loop length (1050–2100μm)—and tried to determine the most suitable bond parameters to realize high-quality gold-ball bonding. For this, we experimented with four different values for each parameter considered. Ball shear and wire pull strength between chip and bond pad were used as parameters to evaluate the quality of the gold-ball bond. Experimental results revealed that the ball shear and wire pull initially increase with an increase in the gold-ball thickness up to 12μm and then starts decreasing gradually with further increases in the gold-ball thickness. Further, ball shear and wire pull between chip and bond pad were found to decrease with increasing gold-wire loop height and loop length. For achieving good-quality gold-ball bonding, a gold-ball thickness of about 12μm, and assuming that the cost of the gold consumed is a major concern, a gold-wire loop height of 180μm and loop length of 1050μm are suggested.
A New Design Idea on Steel Frame - The Active Semi-Rigid Connection Design Method
Authors: He Jia Nian , Wang Zhan
Published: August 2011

The type of beam-to-column connection in framework structure is determined beforehand in analyzing the frame structure using traditional design method. But it is not comprehensive and exact following that idea. It is difficultly to find the better and more proper design result such as the type of beam-to-column connection and the section of member in many viable design results. Therefore, a new design idea on steel frame -- the active semi-rigid connection design method is advanced in this paper. And some examples on the active semi-rigid connection design and the active semi-rigid connection optimal design are showed. From results, the type of semi-rigid connection makes an important effect on the mechanical behavior of the frame; it will cause the mechanical behavior of the frame to change obviously. And it will be got a better optimal result which considering more comprehensively in the whole frame view based on semi-rigid connection optimal design.
Exploring and Practice of Chinese Eco-City Construction
Authors: Zhang Quan , Chen Gang , Zhang Xiao Rui
Published: August 2011

UNESCO has put forward explicitly the concept of the eco-city in the "Man and the Biosphere Program (MBA)" for the first time. Over the past 30 years and more, all the countries in the world have established the eco-city as the goal of urban development. In the practice, some regions of China have also put forward the eco-city construction proposals; however, due to divergence of understanding of the eco-city theories and incorrect knowledge of the actual local conditions, there have been some misunderstandings in eco-city construction, resulting in the so-called “pseudo–ecology”. This essay is started from study of the basic theories of the eco-city. Based on analysis of the current conditions and problems, it probes into methods and measures of eco-city construction in China, with a view to promote the Chinese cities’ ecological development and eco-city construction.
Research on the Ecological Strategies in Landscape Design and Planning
Authors: Sun Ke Zhen
Published: August 2011

This article argues the problem of ecological strategies in the landscape design and planning, and the main contents of ecological strategies. It includes the strategy of landscape sustainable development, which is in conflict with rapid economies and historic preservation, ecological conservation. The paper also discusses why people are the major controllable factor in the ecological strategies. In addition to these, the article studies the composition of landscape ecosystem, integrated ecology and design, integrated uses in landscape area, the method of interdisciplinary working. System theory is involved in this paper to discuss relevant questions.
Ecological Strategy for the Reuse of Old Industrial Buildings
Authors: Liu Qiang , Zhang Jun Jie , Ma Jun , Shi Nan
Published: August 2011

This article makes a theoretical exploration on the old industrial buildings which are a special architectural type in the renewal process of the city construction, introducing its reusing development history, and analyzing its theoretical basis and mode patterns. Focused on the ecological measures in the reconstruction and reusing process, this article analyzes its feasibility and development direction, examining its practical operation through combining with the analysis of specific projects, thus making a profound research on its ecological reconstruction modes. In essence, this article is an attempt to seek for an ecological and sustainable developing way which is in accordance with the China’s national conditions and is able to accelerate the process of reusing old industrial buildings.
The Energy Conservation Analysis and Transformation Technology for Flat Roofs of Existing Buildings in Zhengzhou
Authors: Zhang Yi Zhong , Yan Chao
Published: August 2011

For the construction of a building was insulated and energy efficient effect, zhengzhou have evaluated the building, construction and the flat roofs structure raging indicators and energy conservation of heat transfer is far below the effect of the relevant provisions. In the heat of the environment, the building runs high energy consumption, raise the roof insulating structure of the insulator, "flat" to "slope" and adopt a ceiling on the roof insulating materials of energy conservation measures for reforming and feasibility of energy conservation raging technical analysis.
Mechanics Characteristic Analysis on Subway Deep Excavation near Arch Bridge Abutment
Authors: Xu Yan , Liu Zhen Shun , Zhao Wen , Feng Xiao Yan
Published: August 2011

Taking Shenyang metro line 2 concentrated in digging deep foundation pit on Beiling station entrance arch bridge abutment in TaiShan road for engineering background, using numerical analysis software "MIDAS" - GTS the article simulates construction step and sequence, then analysis deformation low and stress characteristics of palisade structure, at the same time, it predicts displacement trend about arch bridge abutment, so that it could get the simplified results between abutment foundation and horizontal thrust retaining piles together with change rule of earth pressure along depth and construction process. There is certain significance for this article to other similar engineering research.
Research on Integrating Hot Water System Heated by Solar with High-Rise Residential Building
Authors: Li Sheng Cai , Zhou Hong Yan , Qian Yong
Published: August 2011

There are problems of resource allocation and integrating technology with building when utilizing solar energy in a high-rise residential building. In this paper, a new 34-storey residential building with solar energy design is taken for example to probe new ways for solar collectors, energy saving and distribution system. A new system is designed to solve the following problems: inadequate roof area for collecting solar energy, energy loss by long-distance heat transporting, and defacing building appearance by setting solar energy facilities on building surface. And to archive the aim of suitably using solar energy, the integration of solar energy facilities with building facade is also discussed.
Research on the Green Ecotype Residential Design
Authors: Ge De Ping
Published: August 2011

With the rapid economic development in China, the number of residential building has increased rapidly. Thus the high energy consumption and high pollution is also horrifying. As to the global energy crisis and ecological imbalance, this article mainly focuses on the design of green residential houses including the necessities, ideas and methods based on the ecological concepts.
FEM Analysis on the Action of Pile Foundation -Soil- Superstructure in the Earthquake Force
Authors: Wu Li Ming , Wang Zi Jian
Published: August 2011

The building sets up reservoir slope, in order to avoid mass of excavation and fill geotechnical Engineering,according to the change of slope angle, pile foundation is generally made into different height. the foundation of building is Considered apart from Superstructure in general design. in the normal loading condition to satisfy coordination between bearing capacity and strain. But accidental loading is acted to the type of construct whether satisfy up,the strain of lower part structure moderate and is then canned not know by force condition. According to this, with some library coast of the 5 F frame stake foundation for instance, adopted FEM software ANSYS to analyze to carry to act in the earthquake force, pile foundation -soil- Superstructure common coupling action and general design, while carry on internal force and strain result under two kinds of conditions of contrast analysis. While analyzing a result to express the type of building structure to design should well in consideration of the stake and soil, lower part structure thus makes design for effecting upside structure more safety reasonable.
Consolidation Analysis of Composite Ground with Weak Drainage Columns in Consideration of Disturbance
Authors: Tian Xiao Jun , Gong Xiao Nan , Lu Meng Meng , Wang Ning
Published: August 2011

Based on axisymmetric consolidation model, using a new initial condition derived from equilibrium equations and equal strain assumption, and considering the gradual variation of compression modulus and horizontal permeability of disturbed soils, an analytical solution was derived for the consolidation of composite ground with weak drainage columns subjected to an instant loading. Two types of variation patterns of compression modulus of the disturbed zone were considered. The consolidation behavior of composite ground with weak drainage columns was subsequently investigated in consideration of disturbance. The results show that without considering the gradual variation of compression modulus of the disturbed zone will underestimate the rate of consolidation; the size of disturbed zone has a greater influence on the consolidation rate; the larger the disturbed zone, the faster the consolidation rate is; the consolidation is faster if the linear distribution pattern of the variation of compression modulus of the disturbed zone is considered; the consolidation is slower if the exponential distribution pattern is considered.
Research Situation and Prospect for Highway Snowmelt Deicing Technology with Electric Heat Tracing
Authors: Lai Jin Xing , Liu Chi , Gong Cheng Bing
Published: August 2011

The frequency of worldwide disastrous weather is intensified by the global climate warming. The disastrous weather such as freezing rain and snow is extremely disadvantageous to the vehicle performance and safety. This paper summarizes and classifies the current snowmelt deicing methods at home and abroad; emphatically proposes the trend of future active development for snowmelt technology and introduces the snowmelt deicing technology of electric heat tracing, which is the competed developing new technology in the countries of cold region acting as one of the snow removal measures in winter cold regions. The electro-thermal snowmelt deicing technology involves relatively wider field of knowledge, whose research and development are also increasingly connected with the development of other technologies. This paper reviews the development history of electro-thermal snowmelt deicing technology and summarizes the main research condition of domestic electro-thermal snowmelt deicing technology in the last few years, furthermore looks forward the development and application prospect of electro-thermal snowmelt deicing technology by brief description of the current research situation.
A FDM Solving Method of Large-Strain Consolidation of Multi-Layers Super Soft-Soil
Authors: Wen Hai Jia , Zhang Jia Lan
Published: August 2011

The aim is to present a numerical method to solve the large-strain consolidation of super soft-soil. The theory of large-strain consolidation (LSC) is acted as the better method for analysis on the consolidation problem of super soft-soil foundation. The focal points are, based on practical engineering, the one-dimensional LSC equations being derived, the consolidation coefficients being inquired and so on. Based on these, one-dimensional nonlinear LSC equation is solved by the FDM, the e~p and e~k function that are according with the practical engineering is introduced into the solving progress, and the multi-layers super soft-soil is also considered in the progress successfully etc. Finally, a case showed the satisfied analysis result by LSCFDM. And some realizations about LSC analysis on super soft-soil are concluded.
Damping Influence of System Vibration
Authors: Huang Min Yuan
Published: August 2011

Regarding the system vibration as the research object, we study vibration characteristics of the system vibration under the damping action. The primary coverage is as follows: under the external condition of undamped condition, damping condition, free vibration, and harmonic excitation, etc., the fundamental vibration form possesses vibration characteristics. In the project practice, the damping factor’s role to the vibrating system, as well as parameter determination is the damping factor. Low frequency effects on the structure system along with the effective of controlling resonance. In the damping treatment, we have characteristics demand for the damping. Through thorough analysis to damping action, we will obtain the best project fitting.
Research of Mechanical Parameter Back Analysis for the Stratified Soil Slope
Authors: Chao Wan Li , Wang Xing Hua
Published: August 2011

Problem exists in the tradition studies of the stratified soil slope back analysis. The limitation of the tradition method was analyzed on the basis of previous research in this paper. And the definition of the soil layer displacement, which overcomes the size effect of the soil layer, was presented. This displacement was weighted in the objective function, reflecting the sliding characteristics of different soil. Then the calculation method weight of weighted was presented. At last, the strength parameter sensitivity of the objective function was calculated by an example. The result showed the stratified soil slope back analysis can be solved by the new method.
Measurement of Thermal Environment for Ventilated Atrium in Guangzhou
Authors: Zhao Li Hua , Xie Jun Lin
Published: August 2011

In the transition seasons, ventilated atrium play an important part in preventing solar radiation, strengthening ventilation, and reducing the energy consumption, so that it is widely used for developing sustainable building. The field measurement was carried out in this paper. This study had focus on comparing the air temperature in different height of the ventilated atrium, and analyzing the cooling effect of ventilation. Moreover, the paper pointed out that how the atrium to improve the thermal environment.
Temperature Controlling and Monitoring of Mass Concrete Construction of Suspension Bridge Anchorage
Authors: Wang Feng , Lu Ao
Published: August 2011

Temperature controlling and monitoring of anchorage floor mass concrete construction of one suspension bridge is introduced. The project has carried out information construction through selection of low heat cement, incorporation of a large number of slag and fly ash, cutting down hydration heat, strict temperature controlling, conservation measures and real-time dynamic temperature monitoring. The monitoring provided the basis for heat and humidity conservation of concrete. There are no temperature cracks appearing on anchorage floor after concrete casted. Results show that the temperature controlling method is effective for anchorage floor construction.
Study on the Adsorption of Chromium Containing Wastewater with a Kind of Spherical Cellulose Adsorbent
Authors: Lin Chun Xiang , Liu Ming Hua , Hao Yi
Published: August 2011

An investigation was conducted on the adsorption of Cr(III) ions by a new kind of spherical cellulose adsorbent immolizated with phytic acid. The equilibrium adsorption data of the Cr(III) ions on adsorbent were analyzed by Langmuir and Freundlich models, and some kinetic parameters of the adsorption were calculated. Moreover, the adsorbent was also used to dispose the tannery wastewater sample, and the results showed that the spherical cellulose adsorbent had good application prospect in the treatment of tannery wastewater.
Application of Social Carrying Capacity to Sustainable Environment Planning: A Case Study of Coastal Community in Taiwan
Authors: Lei Siu Lai , Zhang Heng
Published: August 2011

Community development must aptly meet social needs in order to be sustainable. One such need, the psychological well-being of residents, is closely tied to the environmental quality of the community. In developing tourism, communities face the issue of impact on their environmental quality by influxes of visitors. Social carrying capacity is an important tool used in the environmental management of tourism areas to ensure the recreational quality. It is often assessed by visitors’ perception of crowding. Despite residents’ views being critical because their lives are directed impacted by the development of their community, no study has been conducted on residents’ crowding perception of their living environment. The characteristic of the environment is a key factor influencing crowding perception in addition to the use level. This study thus aims to examine residents’ crowding perception in reaction to various environmental characteristics in the community. ANOVA results indicate environmental characteristics carry a significant effect: at the same use level, natural and historical scenes were perceived to be more crowded than a recreational one. The findings help planners to better zone a community into multiple use areas based on residents’ crowding perception. In doing so, they can effectively minimize negative psychological impact on the residents, thereby protecting the environmental quality of a community.
Experimental Study on Linkage Behaviors of Built-In Insulation RCCW Subjected to Gravity Loads
Authors: Li Feng Lan , Zhao Shan , Yang Su , Liu Li Xin , Song Chen Xiao
Published: August 2011

The behaviors of linkage of built-in insulation reinforced concrete composite wall subjected to gravity load were experimental studied in this paper. The gravity load was computed as the sum of self-weights of thermal insulation layer, external concrete cover and surface decoration materials. Steel tube with square section was designed as the linkage. Two specimens modeling practical RCCW were cast and tested in Lab, many rectangular steel plates were used to simulated the uniformly distributed load on surface of external concrete cover. The relative displacement between inside structural reinforced concrete wall and external concrete cover, the strains of surface concrete and steel tube walls were measured. Tests were finished when load was over 3.24 times of design value, no relative displacement and only smaller concrete strains were observed, maximum tensile and compressive stresses of steel tube walls were only 6.3 % of design strength. It is concluded that the linkages are safe and the entirety of RCCW is good enough to satisfy the design requirements.
Improved Energy Performance of Air-Conditioning System Using Variable Primary Flow Chilled Water Systems in an Office Building
Authors: Sung Wen Pei , Tsai Tzai Tang , Wang Hsien Jung , Chen Ming Der
Published: August 2011

The main objective of this on-site study is to use a full-scale HVAC (Heating, Ventilating and Air-Conditioning) system installed in an office building in Taiwan for comparing the power consumption, energy-saving, and CO2reduction by variable primary flow (VPF) chilled water systems for controlling the HVAC. The on-site experimental results indicate that average power consumptions are 44,935 kWh for the constant volume (CV) chilled water systems, and 39,025 kWh for the VPF system. Approximately 19% of the maximum energy-saving rate can be achieved if the HVAC system is operated as a VPF system. Additionally, the reduced quantity of accumulated CO2emission varies from 0 to 44,186 kg with 0.623 kg-CO2kwh-1emission factor during the office hours of 08:00 (a.m.) to 20:00 (p.m.). The results demonstrate that switching the operation of an office building HVAC system from CV to VPF will significantly enhance energy savings and CO2reduction. This study is will offer useful information for evaluating an indoor environmental policy with respect to energy savings and CO2emission reduction for office HVACs used in subtropical regions.
Analysis of Spontaneous Combustion "Three Zones" in 3237 Working Face of Zhaogezhuang Mine
Authors: Zhu Ling Qi , Zhang Ying
Published: August 2011

Geological conditions in Zhaogezhuang are complex, and seam angles change greatly. The seam angles achieve mechanization, which is a major breakthrough in the coal mining management. Therefore, the spontaneous combustion management in the working face under complicated geological conditions has also become a safety problem. The concentration of O2 and CO and temperature changes in floating coal in gob area of 3237 working face are determined and analyzed. The division scopes of spontaneous combustion “three zones” are determined. And the possibility locations easy to fire are found. It has important guiding significance to prevent spontaneous combustion.
Comprehensive Evaluation of Optimal Allocation to Coal Resource Based on Stepwise Order Relations Analysis
Authors: Miao Jing Yi , Guo Jie Long , Liu Ying Zong
Published: August 2011

Optimal allocation of coal resource is a major theme that can not be ignored to healthy development of Chinese coal industry. Based on the basis of analyzing the main factors that affect optimal allocation of coal resource, besides from five respects which are the sustainable development, new-type industrialization, industrial safety, recycling economy, and resource monitoring, this paper advances an evaluation index system of optimal allocation of coal resource. Further stepwise order relations analysis and comprehensive analysis with gain characteristic are also used in comprehensive evaluation. Finally it supplies a method that can be used for reference to quantitative evaluation of optimal allocation of coal resource.
Design of TFT_LCD Display System Based on S3C2440A
Authors: Liang Hui Bin , Li Xue Hua , Wang Wei
Published: August 2011

Based on the structure of TFT_LCD controller in S3C2440A, the hardware design of a special LCD display system is completed which is composed of S3C2440A and liquid crystal display modules of TFT_LCD. The reliable control of TFT-LCD is achieved through SPI &RGB interface mode, and the methods of the display program and register initialization of display system are presented. The system can be applied to TFT_LCD module of different resolutions for testing instruments data-showing. The design can also be made as a reference for engineer in developing the LCD display system to shorten the development cycle and save cost.