bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Measurement of Group Velocity of Lamb Waves in Shape Memory Alloy Sheets
Authors: Wang Kai Sheng , Zhang Wei Chun
Published: December 2014

This paper describes the nondestructive evaluation of microstructure using laser-excited Lamb waves to detect the phase transformation in NiTi shape memory alloy sheets. Lamb waves were applied in the NiTi sheet using a pulse laser beam. Piezoelectricity transducers were used to receive the Lamb waves, the group velocities of which were measured using a time-frequency analysis method at different temperatures. Results show that a marked variation in the group velocity occurs during the phase transformation in the NiTi alloy. The dependence of group velocity on temperature provides a effective means of inspecting microstructure transformation in NiTi alloys.
A Large Rotation Matrix for Nonlinear Framed Structures, Part 2: Numerical Verification
Authors: Duan Jin , Li Yun Gui
Published: December 2014

In this paper, some numerical verifications would be presented and discussed, mainly including the following three types: (1) the pure bending beam in which the structural stiffness would maintain the original value and not change along with the load; (2) the clamped arc-beam in which the structural stiffness would decrease gradually with the increment of load and the structure would be buckling at some certain load value; and (3) the cantilever beam in which the structural stiffness would increase significantly with the increment of load. For all of the above examples, the present results are in good agreement with the analytical results and numerical results in other literatures, testifying and illustrating the validity of the large rotation matrix for nonlinear framed structure, which is developed in the part 1 of this paper.
Study on Model of Meso-Scale Simulation for Aircraft Structure Material Based on Voronoi Algorithm
Authors: Zhou Kai , Wang Hai Dong , Bian Gui Xue , Wang Zhan Yong , Zhang Shi Lu
Published: December 2014

Multi-scale theory and framework in research of fatigue crack is described, and then in meso-scale the simulation model of polycrystalline material grains is established using Voronoi algorithm, and the feasibility of this algorithm is verified at the same time; cohesive zone method is introduced and cohesive strength on the interface along grain boundaries is discussed, then Young´s modulus is tried to define in meso-scale according to cohesive zone method, which prepares the calculation of the finite element model.
Virtual Realization of Shaking Table Test of Structure in Sine-Swept Vibration by Multi-Support Excitation
Authors: Xu Man Yi , Liu Hong Biao , Li Ming Yu
Published: December 2014

In order to establish the virtual design method of shaking table test of structure in sine-swept vibration, the accurate sine-swept function in logarithmic variety is proposed by theoretic derivation. According to the numerical simulation, the dynamic response of structure in sine-swept vibration by multi-support excitation is acquired. And the maximum amplitude is less than that of structure in sine-swept vibration by single-support excitation based on the comparison with each other. However, several orders vibration mode are excited by the sine-swept vibration in multi-support excitation, and the structure resonates many times, which will increase the damage probability of structure. In other words, the load case of sine-swept vibration by multi-support excitation is worse than the case of sine-swept vibration by single support excitation. The conclusions above can provide basis for design and dynamic time-domain analysis of aerospace products of shaking table test in sine-swept excitation.
The Effects of Fluid Boundary Types on Flow around and Heat Transfer from an Elliptical Cylinder
Authors: Zhai Hong Yan , Li Qing Ling , Huang Liang
Published: December 2014

A numerical study was conducted to examine the flow field around and heat transfer from an elliptical cylinder of AR=0.5 in two types of the annular boundary and rectangular one. The fluid near the surface separates from the cylinder surface and forms a steady recirculation bubble at the rear end of the cylinder at the first critical Reynolds (Rec1). The vortices begins the alternating separation at the second critical Reynolds (Rec2). Rec1 and Rec2 for the fluid in two boundary types are studied. The Nusselt numbers are compared at Rec1 and Rec2 respectively.
Natural Ventilation Design and Optimization of Large-Scale Industrial Workshop
Authors: Yang Xiao Hu , Long Yan , Meng Ling Zhao , Jin Yu Hui
Published: December 2014

In this paper, we used orthogonal experiment method and Computational Fluid Dynamics (CFD) technology to simulate the thermal environment of the iron and steel workshop. By comparing and analyzing the temperature distribution and air flow of workshops with different window structures, we obtained an optimization of natural ventilation design for industrial workshop. The research results can be used for the structure design or reformation of industrial workshops as reference.
Green Building Implementation through Integrated Project Delivery System
Authors: Yang Yun Hui
Published: December 2014

The building industry is undergoing a substantial transition period. There are three significant trends that are driving these changes in the industry. These trends are building information modeling (BIM), sustainable design and construction (green), and integrated project delivery system (IPD). They are not only re-shaping the building industry, but also reshaping the construction management and career education. This paper presents the advantages and challenges of green building implementation through integrated project delivery system (IPD). Which was refined based on literature reviews, requests for information from professionals and members of the industry advisory group.
Research on the Weighting Coefficients of the Lighting Evaluation for the Target Lane
Authors: Zhang Guang Wei , Zhang Xin Ting
Published: December 2014

The visual experience factors of influencing the target lane’s illuminating system are analyzed and the concrete index is determined with the design of illuminating for the totally enclosed target lane. The shooting scores and the visual experience are tested at the designed illuminating system and the comparison data of the optical aiming set to mechanical aiming set and pistol to rifle are counted. The weighting value of the light evaluation is computed with the fuzzy analytic hierarchy process and the rationality of the design is verified objectively based on the analysis of the data.
Study on the Energy-Saving Design of Underground Building
Authors: Li Nan
Published: December 2014

With the rapid development of national economy, energy saving, emission reduction and low carbon economy is paid more and more attention, the construction is the major energy consuming of all energy intensive industries, energy saving and emission reduction of underground building which is represent the general trend, this paper is based on the analysis of the characteristics of the underground space, the effective energy saving measures from the lighting, ventilation are proposed, in order to achieve the best effect to reduce the energy consumption.
Effect Analysis of Statistical Unit on Relief Amplitude in Chongqing, China
Authors: Zhao Bin  Bin , Xu Xi Yu , Ou Wen Hao
Published: December 2014

This paper researches the influence rule of unit size on relief amplitude by analyzing relief amplitudes under various statistical units and determines the optimum statistical unit in study area-Chongqing using the correlation between different statistical data. The results show that relief amplitude increased with increasing area of statistical unit, but increasing rate finally becomes stable. When determining the optimum unit using artificial drawing method, the point maintains stable can be found. The optimum unit area is 4km2 of SRTM-DEM data in study area.
Research on Application of GIS Technology for Protection of Pre-Qing Architectural Heritage Area in Liaoning
Authors: Wang Xiao Yu , Meng Jin Zhu , Xu Bo , Wang Xiao Hang
Published: December 2014

The paper studies integrated protection methods of pre-Qing architectural heritage area in Liaoning with Geographic Information System (GIS) technology. First of all, pre-Qing architectural heritage in Liaoning is investigated, and the geographic information database is established. Then the composition of pre-Qing architectural heritage area in Liaoning is analyzed, and its value is evaluated. Finally, the traffic system of pre-Qing architectural heritage area in Liaoning is planned in order to facilitate its future protection. This research shows that the application of GIS for the overall protection of pre-Qing architectural heritage area in Liaoning is scientific, reasonable and feasible. Application of GIS technology can expand and innovate the ideas and approaches of traditional heritage protection, and provides a firm data foundation and powerful technical support for a better research and protection of this large scale type of heritage like heritage area.
Multiple Regression Prediction Model on Economic Loss under Typhoon
Authors: Xu Bei Lei , Liu Li Ding , Ji Bai Feng
Published: December 2014

China’s southeast coast is one of the regions with most severely influenced by typhoons in the world, which suffers significant casualties and huge economic losses every year. A multiple regression prediction model of the economic losses educed by typhoon disaster in coastal areas of southeastern china was proposed. The principles of multivariate regression analysis were introduced firstly and the Typhoon disaster data over the east coast of China were analyzed. Then, the affected area, deaths and houses collapsed were chose as the variables and a multivariate regression prediction model of the economic losses educed by typhoon disaster was proposed. The results indicate that the factors affecting the economic losses of typhoon disasters randomness were taken into account and the responses of the independent variables and the dependent variable from the statistical data were provided.
Study on the Plan of Earthquake Elusion and Dispersion - A Case Study of Weifang Street
Authors: Zhai Yong Mei , Wang Fu Zhen
Published: December 2014

Establishment of earthquake elusion and dispersion layout is an effective way to reduce seismic damage.This paper takes Weifang street in Shanghai as a case to study the planning of evaculation during earthquake.Firstly,we divided the demonstration zone into six evacuation units,introduced calculation steps and statisticed the effective areas of seismic refuge , width of routes for evacuation.Secondly,the population to be evacuated were counted according to the results of Earthquake-resistant capacity of urban residence.Finally,we made a comprehensive evaluation on the ability of evacuation when demonstration zone sustained the earthquake of 6,7,8 degrees.The results show that demonstration zone can meet evacuation requirements.However,there are still some weaknesses in local partition.We pointed out weak links and gave reasonable suggestions on the planning of sites and routes for evacuation.
Countermeasures and Scheme in Preventing Zhaohe River Debris Flow Disaster in Erlong Town, Zhenping County in Henan Province
Authors: Zhang Wei
Published: December 2014

Zhaohe debris flow gully is located in the south foothill of Funiu Moutain, serious debris flow disasters occurred here. Now it is still threatening downstream villagers’ life and property safety directly. The geology, landform, climate and other natural environment conditions of Zhaohe valley were analyzed. It shows that Zhao He have debris flow formation conditions. A comprehensive treatment scheme including fending dikes, cleaning river, suppressing foot engineering and biological measures, was put forward based on the hazard characteristic.
An Analysis on the Fire Model and the Safety Evacuation Based on BIM
Authors: Wang Ting , Du Mu Hao , Tang Yong Fu , Zhang Qi
Published: December 2014

With the increasing number of domestic buildings, the importance of safety evacuation in case of fire in the buildings has been aware. Taking a certain public building as the research subject, the author of the thesis imports the 3D model processed by Revit software into such softwares as Pyrosim and Building Exodus by which the 3D model is converted into the Fire model and the Evacuation model, then conducts the analysis of safety evacuation via the evacuation software according to its detailed description of the fire. The analysis results are compared with the fire in time,then optimize the building model in order to achieve the safety requirements.The appliance of the BIM model into the practice of safety evacuation in buildings is considered as the manifestation of the data-orientation and visualization of the BIM model, and it would provide the future practice of evacuation with significant guidance
Brief Study on the Quality Control of Civil Engineering Construction
Authors: Wang Ai Li , Li Nan Nan
Published: December 2014

In this paper, the concept of quality management is clarified in the first place, and meanwhile, the quality feature of construction project, characteristics, and quality management of construction engineering project are illustrated. The quality management of construction engineering project, namely the comprehensive quality management method is illustrated. Furthermore, the feature, basic thoughts and basic methods of comprehensive quality management are illustrated in detail. Later, the process of quality control for construction engineering project, quality control functions and tasks, system organization of quality control, basis of quality control and monitoring method are explained in detail.
Analysis of the Current Situation of the Development of Chinese Industrial Structure
Authors: Liu Shu Ru , Xu Li Li
Published: December 2014

The country's economic development not only reflects the increase of the GNP, but also must be accompanied by the development of the industrial structure. Through studying the development status of Chinese industrial structure, I summarize the Chinese first industry continues to decline, but the proportion and structure deviation degree are still on the high side. The second industrial proportion is rising slowly. The proportion of the third industry is small, and the development of internal structure is not perfect etc. So I suggest that we must continue to consolidate the foundation of agriculture. Accelerate adjustment of second industry, and increase investment in scientific and technological R & D. We need to promote the productive service industry, consummate the internal structure of the third industry. The purpose is that provide basis and reference for the formulation of government policy of industry structure adjustment.
Integration of Environmental Education and Research for Multi-Disciplinary Studies
Authors: You Ming Qing
Published: December 2014

The current environmental education and research are scattered in different disciplines of studies, notably science, engineering, management, economics, politics, and law. This leads to some problems, such as the lack of sufficient understanding of other fields, narrow perspectives towards environmental issues and ill-informed decisions of different branches of the government, and the teaching of one field of the environmental studies based on a false, distorted, or outdated understanding of other fields. Restructuring course curriculum, multi-disciplinary research, and recruitment of college graduates from other fields of study are some of the suggestions.
Safety Evaluation of Human Psychological Factors for Bridge and Tunnel Front-Line Builders Based on SPSS
Authors: Jiang Yi Zhou , Li Zhi Qiang , Wu Lin Song
Published: December 2014

This paper presents a potential methodology regarding the safety evaluation of front-line builders that based on whose psychological factors. The methodology is extended by the impact of front-lines builders’ psychological factors on the safety of construction, by researching on the SAS, SDS and self-restraint related factors to investigate the physiology and psychological condition of bridge and tunnel builders in Anhui, China, from which we aim to create a safety model of relatively related factors via the statistics of investigation.
The Empirical Analysis of Technological Innovation Efficiency of Small and Medium-Sized High-Tech Enterprises in Xi'an High-Tech Zone Based on DEA
Authors: Wang Yuan Yuan , Zhou Yong
Published: December 2014

The study did an empirical analysis of technological innovation efficiency through a case study of high-tech SMEs of Xi'an High-tech Zone of 1999-2004 by DEA. Empirical analysis shows that it is generally good to technological innovation efficiency of high-tech SMEs of Xi'an High-tech Zone in the case of variable returns to scale. Under the same circumstances scale efficiency, the technology innovation efficiency of aerospace manufacturing is lower, which explained that aerospace industry is mainly affected by scale efficiency. However, Computer and office equipment industry’s pure technical efficiency and scale efficiency are slightly related to other industries. Finally, for empirical analysis of high-tech SMEs of Xi'an Hi-tech Zone provid some suggestions.
The Research and Choice of Leading Industry Based on Factor Analysis of Shaanxi Province
Authors: Liu Shu Ru , Wang Ni
Published: December 2014

Leading industry is an important economic phenomenon in the economic development, is the different stages of economic growth point for economic development of a country or region, plays a guiding role of the evolution direction of the country or region of the industrial structure and trend, it reflects and determines a country or region economy development level and foreground. In this paper, through the analysis of the connotation and evaluation method of leading industry, established the factor model and evaluation index of industry, with the method of quantitative analysis and qualitative analysis, screening out 7 industry leading industries in Shaanxi province.
Benchmarking as one of the Facility Management Tools for Reduction of Life Cycle Costs of Building
Authors: Kuda František , Berankova Eva Wernerova
Published: December 2014

The subject matter of the paper is the benchmarking process, representing a strong tool in the Facility Management aimed at making the performance of a certain process more efficient and thereby providing for reduction of costs in the operating phase of life cycle of buildings. The paper indicates the fundamental character in link to the latest part of the Facility Management standard, representing this process as one of the potential Facility Management tools.
Analysis of Environmental Factors Impact on Urban Underground Pipelines
Authors: Xu Dong
Published: December 2014

With the expansion and modernization of cities, the intensity and density of urban underground pipelines are dramatically increasing, and the surrounding environment of the underground pipelines is more complex. This paper analyzed the environmental factors of the pipelines, and divided the environmental factors into soil environment, external force and natural disaster. By using the Accident Tree Analysis researched the basic events that cause the underground pipeline accidents, and the results shows that the most important basic events are the human constructions, without protective measures, and the second important basic events are corrosion failure, no timely detection and treatment of the environment risks, such as underground cavity, encroachment. The evolution mechanism of underground pipeline accident was analyzed. According to the analysis results, the soil surrounding the underground pipelines may be evolved into unstable-state under the influence of environmental inducements, finally the underground pipelines may be damaged and the accidents will happen without any protective measures.
The Analysis of China's Previous CPI Fluctuation Cycle
Authors: Qian Shu Fang
Published: December 2014

The current CPI fluctuation is one of the hot issues that people are common concerned, the monthly published data is also concerned. Facing the problem reported by CPI, we need to analyze deeply the CPI fluctuation cycle and study the law and characteristics of fluctuation, so as to find out the reason. This article refers to the H-P filtering method, the cycle is divided on the 1978-2011 monthly CPI data, found that since the reform and opening up, the CPI has experienced seven volatility cycles, moreover, the characteristics and causes are different between previous fluctuations, so analyzing characteristics of the previous CPI fluctuation cycle has a very important significance on maintaining the stability of the price level in the future and making the correct macro-control policy.
Analysis of the Layout Axis of Jinci in Taiyuan, Shanxi Province
Authors: Xiao Ran
Published: December 2014

The ancient building group of Jinci gathers different architectures in the dynasty of Song, Jin, Yuan, Ming, Qing , which is deserved to be recognized as the national treasure and living ancient architecture archives including more eras. Based on the location, layout, axis of the building arrangement, this essay expounds the layout features and analyses the ancients’ grasp of axis in Jinci.
Analysis of the Sparrow Brace Culture of Traditional Wooden Architechture
Authors: Tang Xi Ya , Zhong Chen
Published: December 2014

The sparrow brace has experienced various of changes in shape, crafts, decoration, color during hundreds of years, which changed from a pure mechanical component into a unity of mechanics and aesthetics. The sparrow brace has brought traditional wooden architecture strength and beauty collision, dynamic and static combination and soothing and boosting coordination. The sparrow brace has become a bright pearl in traditional architectural decoration elements when its decorative significance surpassed structural significance in ancient architechture.
BIM-Technology in Architectural Design
Authors: Gamayunova Olga , Vatin Nikolay
Published: December 2014

The past period of history, when engineers create design documents standing at drawing board and armed with a pencil, going farther and farther away from us. Less and less used programs allow you to create only 2D-models. In the leading design companies it's time to BIM - the era of parametric modeling. The article provides a definition of BIM, considered the advantages and disadvantages of BIM, identified the main categories of BIM-technology users.
Design Analysis of Commercial Complexes of Modern Urban Architectures
Authors: Yan Yang , Wu Xin , Lu Jun , Xi Yue Lin
Published: December 2014

Since the national economics has developed rapidly, construction systems of the commercial complex has gradually been established towards the right track and obtained great achievements. On one hand, the constructions and “achievement projects” are in need of commercial complex innovation, on the other hand, there are always such needs in urban construction activities, resources distributions and the quality of life. In the essay, the author analyses how to make a good design with the development of some aspects: design conception, general structure and functional layout. It means to present some references for the commercial complex designs in the future.
Research on Characteristics and Structural Arts of Gannan Hakka Building
Authors: Yao Jin Gui , Huang Xiao Qin , Wu Lang
Published: December 2014

In the primitive society, people live long cave, nesting, and shack, know from practical experience to the circular and square building space, structure more safe and simple structure. Enclosed is the enclosed housing. "House" development from southwest to northeast gradually weakening trend, the construction time, according to the existing data of the earliest of the late Ming dynasty. While the Gannan Hakka, from the architectural characteristics and structural art, its history dates back to the ancient palace style and rammed earth technology, has the significance and the value of a certain.
Weathered Characteristics of Silty Mudstone in Hunan Province, China
Authors: Wang Ji Hua , An Chen , Yi Zhou
Published: December 2014

To study the weathered characteristics of silty mudstone in Hunan province, china, mineral analysis, softening test, disintegrability test, and weathering rate test are used. The test results show that with the increasing of weathering degree, the content of clay minerals increase from 34.1% to 57.2%, the content of quartz decrease from 58.6% to 38.7%. The content increasing ratio of Fe2O3 and Al2O3 are 52% and 44% respectively, the content decreasing ratio of K2O is 52%. From lightly weathered rock to completely weathered rock, the decreasing ratio of dry density is 20%, the increasing ratio of water absorption is 40%, the increasing ratio of porosity is 190% nearly and the decreasing ratio of natural compressive strength is 84%. For strongly weathered silty mudstone, the softening coefficients of the first dry-wet cycle, the second cycle and the third cycle are 30%, 54% and 72% respectively. So when silty mudstone weathered further, the content of primary minerals decrease and the content of secondary minerals increase. The weak activity chemical composition increase and the strong activity chemical composition decrease. Weathering cause the mechanical properties of rock become worse. Repeated dry-wet cycle can accelerate the softening of rock. The larger the exposure area of rock is, the quicker the rock weathered.
Architectural Programming and Architectural Design
Authors: Ma Jian
Published: December 2014

Architectural programming provides the basis of architectural design, and provides a framework to guide the whole construction process, results and quality control of the project, the construction activities towards our default direction. Architecture programming plays a very important role in the control of the whole design process and design quality.
Discuss the Design of City Square to the Old Age Humanities Care - Wuhan Northwest Lake Square Public Space Investigation Enlightenment
Authors: Guo Ting Ting , Guo Yuan Yuan
Published: December 2014

The paper focuses on how to reinforce the humane care for the elderly in the functional orientation starting from an investigation on the Northwest Lake Green Square space, with an aging society approaching today. And it also makes recommendations for how to meet the needs of the old in the health, psychology and communication, safety.
Research on Construction Situation and Design of Tropical Modern Tourism Agriculture in Hainan
Authors: Huang Jia Jian , Wang Ling Ling , Gao Xiu Yun
Published: December 2014

Along with the development of Hainan tourism, agricultural tourist attractions is famous for its beautiful natural landscapes and unique folk customs and traditions. construction situation of tropical modern tourism agriculture in Hainan is analyzed in detail from the perspective of life experience, food and countryside, ecology protection, investigate and study, hot spring and landscape, civilization eco-village, national culture and large recreational agriculture theme park. This research summarizes and analyzes essential principles of tropical agriculture tourism planning. Considered in tropical agricultural resource utilization, ecological environment monitoring and protecting, water-saving irrigation and formula fertilization, the design thought and plan for tropical modern tourism agriculture in Hainan are expounded in this paper.
Research on Impacts of the Financial Crisis on Consumers’ Behavior - A Case Study in Wuhan, China
Authors: Huang Jian Ming , Tu Chao Lian , Wang Xiao Jun , Wang Zu Shan
Published: December 2014

This paper, based on the data about urban residents’ consumptions in Wuhan from 1992 to 2011, compares such economic parameters as the marginal propensity to consume, consumption amount, consumption structure, degrees of consumption structure change before and after the financial crisis. The results reveal that the crisis has effects on the consumption amount and consumption structure. Then some suggestions are provided to stimulate the consumption.Key words: financial crisis, consumption amount, consumption structure, impacts
The Investigation about the Foundation and Current Situation of Lanzhou Circular Metropolitan
Authors: Wang Guo Rong , Wang Ke Feng , Wang Nan
Published: December 2014

With the great improvement of the market commercializing and industrializing, urbanization of China has been formed and developed in a rapid speed. Based on the disscussion about the concept of metropolitan, this article comprehensively analyzed the foundation and existing issue of Lanzhou circular metropolitan by referring Longhai-Lanxin economy belt, Lanxige economy region, LAN-Xi urbanization. The significance of Lanzhou circular metropolitan in supporting west-northern region and the economical improvement, prompting other cities development, and completing and optimizing the theory of metropolitan were also discussed.
Reliability-Based Analysis and Global Optimization Design of Anchor Anti-Slide Pile
Authors: Xiao Zhi Yu , Ji Yong Xin , Qu Qing Fei , Li Xin Gang
Published: December 2014

A reliability-based approach for the analysis and optimization design of anchor anti-slide pile is presented in this study by using the project cost as its objective function. The following four failure modes: tensile failure or pull-out failure of the anchor rod, as well as shear failure of anti-slide pile in the anchoring section or loading segment, are considered. The cohesion force, internal friction angle of surrounding soils, and axial compressive strength of concrete are viewed as random variables for finding optimal design parameters, such as the cross-section area or width of anchor anti-slide pile. By employing the optimization toolbox of Matlab, the corresponding design procedures are established and utilized into a practical engineering project (i.e. a slope marked as K6+525~K6+610 in Shui-Dong road, Guiyang). Results show that the proposed approach is effective and the project cost is reduced 14.89% when the reliability-based optimization design is used.
Short-Term Water Level Prediction in Middle Stream of Yangtze River
Authors: Hou Hai Qiang , Liu Xing Long , Xu Wu Xiong , Liu Huai Han
Published: December 2014

Based on the measured water level data after the impound of Three Gorges reservoir, the water level short-term prediction model of income flow of Chenglingji, Han river and Hukou is constructed by multiple regression method. The comparative of measured water level and predicted water level indicated that, the prediction of income flow is accord with the real flow. Meanwhile, according to statistical analysis of the water level and flow, and considering the total inflow and the jacking of branch inflow, the water level short-term prediction model for middle stream Yangtze River is set up separately. Then, by using multiple regression model, the multiple regression formula for water level prediction is constructed , to applied to the river reach where branch inflowed or river reach jacked by the downstream. Compared with the field observation data, the prediction results are quite precisely.
Analysis of Earth Berm on the Impact of Cantilever Retaining Structure Based on ABAQUS
Authors: Wu Zhen Yu , Duan Zhong Yuan
Published: December 2014

Software ABAQUS was carried out to analyze the effect of earth berms on behavior of cantilever retaining structure, and the soil was in modified Cambridge model. The results showed that: in the premise of ensuring the stability of earth berm itself, height and width of earth berm increased reasonably can reduce the horizontal displacement and bending moment of supporting structure, so as to improve the safety of the supporting structure, and save the cost of project.
Inhibitory Effect of Three Heavy Mental Pollutants on Antioxidant Enzymes of Paramecium caudatum
Authors: Wu Di , Yan Yan , Pei Si Ying , Zhang Miao , Wang Qi , Gong Zi Lin , Chen Ying
Published: December 2014

In this artical, we chose three key heavy mental pollutants from all kinds of pharmaceutical wastewaters: zinc, cadmium and mercury to study their effects on three antioxidant enzymes of Paramecium caudatum: Superoxide dismutase (SOD), Peroxidase (POD), Catalase (CAT). Results show that three pollutants can cause activity of three antioxidant enzymes significant changing. But the trends of POD are different from that of SOD and CAT. This result shows that there maybe a different protect mechanism between CAT, SOD and POD.
The Calculation of Air Pollutants Emission from Ships in Ports
Authors: Zhao Ya Qian , Wang Wei , Feng Xue Jun
Published: December 2014

The air pollutants emissions from ships obtained a large proportion in the system. The research of air pollutants from ships has become a hot issue. The paper analyzes the generating mechanism and detriment of air pollution from ships, and summarizes the methods to calculate air pollution emissions in ports, clearly defined the concepts and details the formulas of the method based on fuel consumption and the method based on power, finally propose reasonable methods to calculate the ship air pollutants under different conditions, to improve the convenience and accuracy of calculation.
The Correlation between Nitrogen Phosphorus Nutrients and the Growth of Microcystis Aeruginosa
Authors: Wu Jun Sen , Liu Chen Chen , Jia Rui Bao , Li Bing
Published: December 2014

The correction of nitrogen phosphorus nutrients and the Microcystis aeruginosa biomass were studied by setting the different concentration of nitrogen and phosphorus, different nitrogen sources and the ratios of nitrogen and phosphorus. The results shown that the optimal nitrogen source on the growth of Microcytis aeruginosa NaNO3, Miccrocystis aeruginosa could adapt to a low N environment. Phosphorus is the limiting factor in the growth of Microcystis aeruginosa that can not survive at the absence of P in the environment. The optimal ratio of nitrogen to phosphorus is 50:1. Glycine as the Microcystis aeruginosa nutrient grew slowly at prior period and it grew rapidly later, which is similarity to the water eutrophication and the algae outbreak.
Degradation of Methylene Blue by Fenton-Like Reaction
Authors: Zhu Gang Chao , Shou Jian Xin , Qian Jia Wei , Xin Hua Zheng , Qiu Mu Qing
Published: December 2014

In order to enhance the catalytic activity of the heterogeneous Fenton-like reaction, the catalyst of Fe3O4 composites was synthesized. The Fe3O4 was used as catalyst of the heterogeneous Fenton-like reaction to degrade methylene blue in aqueous solution. The influencing factors, such as pH, initial H2O2 concentration, dye concentration and catalyst concentration, were investigated. The results showed that the dye was effectively degraded at pH 3-8. The optimal condition was at pH3.5. The degradation efficiency of dye increased with the increase of the initial H2O2 concentration and reached maximum when the H2O2 concentration was 15 mmol/L. The degradation efficiency of dye increased with the catalyst concentration was 650 mg/L. The coexisted anions decreased the degradation efficiency of dye.
Magnetic Flocculation for Advanced Treatment of Vitamin E Production Wastewater
Authors: Lan Shan Hong , Liang Xiao Qing , Liu Zhi Cong , Wang Chuan Lu , Li Hui Jie , Zhang Jian , Zhang Heng
Published: December 2014

Effects of the sorts and concentration of flocculants, types of PAM and pH value on the advanced treatment of Vitamin E production wastewater by magnetic flocculation process were studied. When the effective flocculant prepared in our lab was chosen as the flocculating agent and its concentration was 1.0 g/L, The cationic PAM 802 was as the coagulant aid and its concentration was 15 mg/L, pH was controlled as 9.0, CODCr removal rate achieved the maximum of above 31%.
Finite Element Analysis of Hollow Cylinder Test Considering Variation of Wall Thickness
Authors: Xu Bin Bin , Noda Toshihiro , Nakai Kentaro
Published: December 2014

Hollow cylinder torsional shear test is simulated regarded as a boundary value problem employing a three-dimensional static/dynamic soil-water coupled finite deformation analysis to investigate the influence of the specimen geometries on apparent behavior concerned in practical experiments. 1) A “Perfect path” which means the response of a single three-dimensional element with uniform deformation is calculated to investigate the effect of non-uniformities on the apparent behavior. As can be seen, only the apparent behavior with thinnest wall thickness coincides with the “Perfect path”, which indicates a uniform deformation inside the thinnest specimen; 2) It was found that when the cylinder wall thickness became smaller, the non-uniformity also decreased correspondingly, which can also be seen in the element behaviors of the thickest specimen; 3) Even thought the non-uniformity in different geometries is quite different, there seem to be no significant influence on the apparent behavior. The reason may lie in the extreme constraint conditions, namely displacement control.
PM10 Measurement and Analysis of Urban Public Spaces Indoor Environment
Authors: Tan Hong Ying , Zheng De Zhong , Ma Lei Lei , Chu Yu Jing
Published: December 2014

The content of PM10 and PM2.5 in public places can harm to human health. Conduct the PM10 measurement in three public places of Qinhuangdao Kindergarten, Office Building and College Classroom. According to the measurement data statistics, analysis the influencing factors of indoor environmental pollution. The results showed three conclusions. First, the indoor PM10 concentrations influenced by the indoor whether heating or not. The PM10 concentration change ratio is 1.12~ 1.663, and the PM2.5 concentration change ratio is 1.29~2.1. Secondly, in the fog haze weather, indoor PM10 concentrations linear associated with outdoor PM10 concentrations; in the sunny day, there was no obvious correlation with the outdoor PM10 concentrations. Finally, contrast the standard drawn up by domestic and foreign relevant organizations and authorities, in the fog haze weather, indoor PM10 and PM2.5 concentrations below China standard value, but higher than USA, Europe, Japan standard value.
Modeling the Impact of Three Gorges Dam on the Cooling Energy Consumption of the Reservoir Cities
Authors: Wu Min , Tang Wai Ching , Zhou Yan , Chen Shuo , Chen Guang Wei , Qin Zhi Dan , Wang Yin , Davis Peter , Sher William D.
Published: December 2014

While the Three George Dam might help in utilizing hydraulic power, historic weather data showed that the Three George Dam has a serious impact on the relative humidity for cities in the reservoir area. We conclude that the cooling energy consumption in Chongqing may have increased about 31 per cent, provided that the Three George Dam had not been constructed.
Determination of Main Influence Angle of Ground Settlement Caused by Xi'an Metro Tunnel Construction
Authors: Zheng Xuan Rong
Published: December 2014

Peck method and Stochastic medium method (SMM) are widely used in the field of ground movement included by urban soft ground tunnelling in China. The determination for the key parameter for SMM is also a problem because of the relative little experience from the engineering application in China. Through discussing the theoretical relationship between Peck method and SMM, Peck method can be regarded as a simplification of SMM where is used in relatively deeper excavation condition, and the method of determination for the key parameter for SMM is suggested. The suggested method are proven and verified by some practical engineering projects. Finally, they can significantly improve the adaptability of SMM in engineering application.
Conception and Design of the Launched Transport Mode
Authors: Zhou Gui Liang , Wu Ding Xin , Mao Li Na , Zhu Yan Ru
Published: December 2014

The feasibility of the launched transport mode is studied by means of the physical and simulation model. And a new transport mode—launched transport mode, is put forward. After describing the overall design thinking, a preliminary design of the aircraft of the transport mode is carried out. Then the result is obtained that the new mode can save 10%~30% on cost and improve 30%~50% on efficiency than other transport modes when undertaking the equal transport task according to flight-test and simulation of the aircraft model. The launched transport mode provides a new mode for the short-to-medium distance transportation, as well as a new idea for the innovation of the transport mode in the future.
Laboratory Model Test Study of Tunnel Anchor
Authors: Shen Bing , Long Sai Qiong , Chen Jun , Li Yong Bing
Published: December 2014

A laboratory model test of tunnel anchor was conducted to investigate its pullout mechanism and bearing capacity. Surface and rock deformation, strain and stress were measured during the entire model test process. The results show that: under pull out load, tensile failure first occurs in top surface rock near the anchor, then shear failure occurs in anchor-rock interface and rock around the anchor. The failure surface is inverted cone from the anchor bottom. Under 50 times design cable force tunnel rock is in elastic stage, suggesting that current tunnel anchor design is quite conservative and can be further optimized.
Simulation on Urban High Occupancy Vehicle Lanes - A Case Study in Nanjing
Authors: Wu Ding Xin , Deng Wei , Song Yan , Luan Xin
Published: December 2014

Dedicated bus lane (DBL) operation has been implemented in dozens of urban areas in China, and it is considered as one of the most efficient ways to solve the urban transport problem. Since the capacity of DBL is underutilized, it could be enhanced by allowing high occupancy vehicles (HOV) to use DBL lane. And this will turn DBL lane into HOV lane. However, HOV lanes are currently most used in freeways instead of urban areas especially in western countries. There is almost no HOV lane has been implemented in China nowadays.That is why research on HOV is worthy of attention. Simulation is risk-free and cost-effective way to evaluate the hypothetical implemented HOV lane. The hypothetical implemented HOV lane is located in Nanjing and evaluated using VISSIM. The simulation results shows that the HOV lane is suitable for urban areas and it can enhance speed of social vehicles with no significant effect on bus operation. At the same time, traffic delays and queue length of intersections are reduced.
Braess’s Paradox in Day-to-Day Model
Authors: Li Qi
Published: December 2014

This paper describes day-to-day model , and presents the capacity of the new link will affect the Braess’s paradox in dynamic process. When its capacity increases, the cost of the new link will decreases. When the system cost of the new network is larger than the old network , Braess’s paradox will occur .Finally ,numerical analysis shows that the capacity of the new link will affect the Braess’s paradox in day-to-day.
Transshipment Equipments for Road-Rail Intermodal Transport
Authors: Li Cong , Yang Guang , Sun Xiao Nian
Published: December 2014

Due to the large external costs of road transport, many developed countries have begun to shift the balance between road and rail transport, i.e. enhance the proportion of railway in the transport sector, especially in freight transport. The paper firstly analyzes the necessity of such balance shift, which requires the development of road-rail intermodal transport. Then, the paper focuses on the issue of transshipment equipments to solve the obstacles of road-rail intermodal transport, whose analysis includes both the drawbacks of traditional vertical transshipment equipments and the advantages of innovative horizontal transshipment equipments. Finally, the conclusions are drawn and further suggestions are suggested.
The Land Occupation Analysis of the Loop-Ramp Patterns of Freeway Trumpet Interchanges
Authors: Sun Jian Cheng , Lu Hong Xu , Chen Chen Feng
Published: December 2014

Interchange is not merely a major way of the intersection of main highways but also one of the important structures of freeway.And trumpet interchange is an important pattern of interchange. The design speed of ramps,the linearity indices of ramps and the patterns of loop ramps are the main influencing factors for the land occupation of freeway trumpet interchange.In this article, their influence on the land occupation have been analyzed in the first.Since then, specific studies between the land occupation and the loop-ramp patterns of trumpet interchanges.Finally, some advices were given to the design of interchanges.
Joint Optimization Combining Genetic Algorithm and Numerical Algorithm Based on MATLAB
Authors: Guo Yan Hua , Liu Fei Fei , Zhang Ning , Wang Tao
Published: December 2014

The mathematic model of a two-bar truss is built in MATLAB and the analysis is carried out by the genetic algorithm toolbox. The parametric model of the planar truss is established by the ANSYS Parametric Design Language. Solutions are obtained using the first-order method native. Genetic algorithms don’t always display better properties than others. Finally, a joint optimization method is proposed, which combines MATLAB genetic algorithm toolbox and the numerical algorithm based on the quasi-Newton method. The method is identified through the numerical example of the two-bar truss. The results indicate the joint optimization method can always converge to the global optimal solution.
The Application of the CORS in the Research of Digital Urban Municipal Supervision and Management
Authors: Li Meng , Liu Ming Xing , Feng Xiao Gang
Published: December 2014

This paper introduces the project of the digital urban municipal supervision and management, and also focuses on the data which is collected from the city component data of outside work by the CORS. This paper has done the practical application of the CORS in the project, and also has analyzed the result of the practical application. By the precision analysis of the result, this essay has discussed the values from the CORS-RTK to the project of digital urban municipal supervision and management. Finally this essay will provide references and the technical base to the project of digital urban municipal supervision and management.
Site Test and Analysis of Vibration Attenuation Effect of Steel Spring Floating Slab Track
Authors: Zhang Heng , Huo Miao Miao , Meng Lei , An Xiao Shi
Published: December 2014

Through site test, the paper conducts site test to vertical vibration accelerations when a train passes through steel rails and tunnel walls at a steel spring floating slab track section and a general track section in the tunnel of Yizhuang Line of Beijing Metro. The paper also conducts comparative analysis of the accelerations in time domain and frequency domain. It is shown in results that the vibration acceleration level of the steel spring floating slab track in time domain is reduced by 22 dB in tunnel walls in comparison with the general track; in the frequency domain, the vibration effect is gradually increased with frequency increase and reaches the optimal effect in medium-high frequency. The maximum vibration attenuation quantity of frequency division reaches up to 40 dB; and the maximum Z weighted vibration acceleration level is reduced by 22 dB.
Research for the Load Method of the Metro Lining Segment
Authors: Li Li Xin , Liu Ji Long
Published: December 2014

Bearing capacity tests of three reinforced concrete lining segments were carried out. The effect of the loading method and ultimate bearing capacity of the reinforced concrete lining segments and the maximum displacement and reinforcement ratio on the failure mechanism was analyzed based on the simulation results. The simulation results show that the yield load and ultimate load of the lining segments can be effectively increased because of the axial force effect. the loading method on the full surface was proposed. The the ultimate load and yielding load increase as the reinforcement ratio increase is radial distribution in the state.