bluuebunny/crossref_metadata_2025 huggingface dataset:
Summary of Model Tests and Settlement Characteristics of Base Layer in Immersed Tube Tunnel
Authors: Wei Gang , Qiu Hui Jie
Published: August 2013

t is significant to study settlement characteristics of the base layer in immersed tube tunnel for the settlement is quite large during the construction. Collects trial data of five sand replacement model based on engineering of Guangzhou zhujiang immersed tube tunnel, Guangzhou biological island-University city immersed tube tunnel, Guangzhou Zhoutouzui variable cross-section immersed tube tunnel, Tianjin Haihe immersed tube tunnel and Zhoushan shenjiamen immersed tube tunnel. Analyzes current study of the sand replacement model test and settlement characteristics, and summarizes current development and research progress. Analyzing the mechanism of settlement and silting impact in the base layer anti to the lack of settlement characteristic study and puts the further study and research ideas forward.
Review on the Ultimate Bearing Capacity of the Aqueduct's Supporting Structure
Authors: Duan Qiu Hua , Zeng Dan Dan , Yang Lu Feng , Luo Yue Jing
Published: August 2013

This paper summarizes the structure forms and characteristics of the aqueduct's supporting structure. The main method of plastic limit analysis and theory of the aqueduct's supporting structure were introduced, and the existing problems of the present research were analyzed in the paper, and thereby the research trends of the ultimate bearing capacity of the aqueduct's supporting structure in near future was proposed.
Resonance Characteristics of Stay Cables under Parametric Excitation
Authors: Luo Shuai , Yan Quan Sheng , Liu Hong Jun
Published: August 2013

Analysis the dynamic response of the stay cable subject to parametric excitation represents a complex task for cable design procedure and forms an important step in the cable mitigation design. This paper analyses the characteristics of cable resonance under indirect excitation. The problem of cable vibration under the motion of the supports is considered as parametric excitation. The formulae for the estimation of maximum amplitude of cable vibration are presented to determine the resonance characteristics of large amplitude vibration of the cable under indirect excitation.
Analysis on Creep Property and Model of Bridge Girder Concrete with Various Mix Proportions
Authors: Guo Fei , Qin Hong Gen , Cao Peng Fei , Liu Guan Guo , Zhang Yun Sheng
Published: August 2013

Combined with the construction of Jinghang Canal Bridge of Jiangliu highway, shrinkage and creep property of the cast-in-situ high performance concrete of bridge girder was researched. The results showed early shrinkage and creep development of the high performance concrete was relatively rapid, and creep tended to be stable 120 days later. With the admixture increasing, shrinkage and creep of the concrete were reduced. Meanwhile, early creep rate deceased. Similar results applied to the reduction of sand rate and water-cement ratio. Based on creep prediction models both at home and abroad, hyperbolic power function and exponential function model were put forward, taking the influence of material parameter and environmental factors on shrinkage and creep into consideration. In accordance with the model, concrete creep formula was given out and would provide a relatively scientific basis for practical prediction of concrete creep.
To Build a Green University Library - Architectural Design of Hefei Institute Library
Authors: Guo Jia , Chen Zi Jian , Tao Zhi
Published: August 2013

This paper proposed a brand new design method highly fitting architectural design concepts with green building spirit through the real example of Hefei University Library and the return visit after the completion of the building, to provide a new direction of thinking for the construction of university green buildings.
Design and Field Measurement Analysis of Steel Template in Axis Rotating Structures
Authors: Hu Chang Ming , Liu Feng Yun , Che Jia Ling , Zhao Yun Bo , Wu Qiong
Published: August 2013

The template system, the mould of fresh concrete, plays an important role in the concrete structure construction. At present, in the process of steel template concreting in axis rotating structures, the template system adopts the traditional construction technology of formwork with scaffolding; thus, the template can not withstand the loop force, hence difficult construction and safety hazards. Aimed at the deficiencies in template system design, a new kind of steel template that can bear loop force has been designed with the software ANSYS. Taking a rotating structure as an example, this paper, based on the stress test of the structure, has analyzed the distribution and change of the stress under the steel template construction. The results show that the design of the template is reasonable and that it is also applicable to similar structures.
Moment-Curvature Relationship Analysis of High-Strength Concrete Shear Wall
Authors: Song Can , Li Feng , Zhao Hua Jing
Published: August 2013

In order to improve the lateral deformation capacity of the high strength concrete shear wall, partially confined end-zones are usually set in the both ends of the shear wall cross-section. According to the experimental results of 15 high strength concrete shear walls with flexural (flexural-shear) failure, the moment - curvature skeleton curve of this shear wall cross-section is simplified as four linear through cracking point, yield point, peak point and ultimate point. Based on the plane-section assumption, the bending moment and curvature expressions at cracking, yield, peak and ultimate state are derived. At the same time, the effect of partially confined end-zones on peak and ultimate moment-curvature are taken into account. The analysis results show that, the calculated values are in good consistent with the experimental data.
Pseudo-Dynamic Analysis and Construction Methods of Substructure for Division Plate of New Tank
Authors: Wu Wei , Ji Jing
Published: August 2013

Combined with practical experience a kind of new horizontal storage tank with separate plate was put forward. In view of the lack of experience in the design of the new tank and limitations of carrying out shaking table test for full scale horizontal storage tank, the pseudo-dynamic analysis of separate plate substructure with 5m diameter is done by using ANSYS finite element software combined with the actual engineering. The fluid loads action and mechanical model were simplified, and elastic-plastic mechanical properties of separate plate substructure under the cyclic loading actions were investigated, then deformation and stress distribution of separate plate were obtained. The design thickness for separate plate which in the horizontal storage tank is verified by finite element analysis and the horizontal tank construction methods is given. These can provide technical support to improve the practical design of large horizontal storage tank.
Study about Mechanic Parameter of Slope Rock Mass' Structure Plane
Authors: Wu Si Yu , Huang Bo , Liu Rui Jun
Published: August 2013

Firstly, the stability of the slope need to determine mechanical parameters of slope rock mass such as deformation modulus, Poissons ratio, cohesion and internal friction angle, etc. For intact rocks, the mechanical parameters mentioned before are easy to determined. While the stability of slope rock mass is controlled by the deformation and intensity. Therefore, how to determine the mechanical parameters of the structure is the key to analyze the stability of slope rock mass. This paper intends to set the slope rock mass below some extra-large bridge as the research object and use numerical calculation to determine the mechanics parameters of rock mass structure plane on the basis of rock sample mechanics test results.
Evaluation of Subgrade Compactness
Authors: Zhu Xiao Bin , Wang Hui , Zhang Yan Cong
Published: August 2013

Subgrade compactness is the assurance of road strength and stability requirements, is an important indicator of the quality control of road works. Summarize the subgrade compaction detection methods. Expound the inspection and assessment of the compactness methods and precautions combined with the new specification can provide technical reference.
Investigation on the Influence of Fatigue Damage on the Mechanics Property of Anti-Seismic Steel HRB400E Reinforcing Steel Bars
Authors: Luo Yun Rong , Zeng Tao , Fu Lei
Published: August 2013

Low cycle fatigue (LCF) experiments on anti-seismic steel HRB400E reinforcing steel bars under constant total strain (0.6%) control were conducted on a MTS 809 servo-hydraulic material testing machine. The specimens were then subjected to quasi-static tension until they ruptures on the machine. The mechanical properties such as cyclic stress-strain behaviour, quasi-static strength, and quasi-static ductility of the material at various levels of fatigue damage were investigated .The test results indicate that when compared to its virgin state, in a certain cycles (about 80% fatigue life) the cycle-dependent behaviors of the material can cause a slight change in the strength and ductility, and the ductility of the steel has an opposite trend to the strength. However, a significant decrease occurs to both the strength and the ductility as the cyclic cycles exceeds about 80% fatigue life.
Research on the Bearing Mechanism of Mudstone with Soft-Hard Alternant Strata
Authors: Ma Fu Rong , Yang Shou Mei
Published: August 2013

In order to analyse the bearing mechanism of mudstone with soft-hard alternant strata, the mudstone layer is choosed, and the interbedded mudstone models were built. The standard penetration test and shallow plate loading test have been studied. The results of test show that the relationship between standard penetration number and depth of burial is exponential relationship. The characteristic value of bearing capacity of interbedded mudstone is linearly related to the logarithm of standard penetration number. The bearing characteristic of interbedded mudstone is vulnerable to the unloading, disturbance and water content. Model formula of the relationship between the characteristic value of bearing capacity and the logarithm of blow count was verified with high reliability.
Seismic Response Analysis of LNG Storage Tank under the Vertical Earthquake Excitation
Authors: Zhou Li Jian , Fan Yuan Gang , Gao Bin , Wang Xiang Ying
Published: August 2013

Use Adina finite element software, established the finite element model of the the volume 10000m3LNG storage tank, against the concrete outer tank of full containment type LNG storage tank vertical seismic action seismic response analysis. Take acceleration seismic input method, select the four categories venue seismic waves, LNG storage tank stress analysis of vertical seismic action, come in different earthquake LNG storage tank outer tank equivalent stress, hoop stress and axial stress distribution.
Structural Design and Analysis of a New Soil Moisture Probe
Authors: Huang Jun , Liu Xiao Chu , Yao Li , Wang Hao , Liu Shuo Chun
Published: August 2013

It presents a new structure of soil moisture probe which is designed for the solar automatic water-saving irrigation. DC two-probe method is used to measure resistivity of the new probe with different content of graphite under wet and dry conditions. The results show the resistance variation of the composite material with more than 25% graphite content is very small, its suitable for the production of two-pin probe; the conduction of composite material with less than 15% graphite content are greatly affected by the cement, its suited for the production of one-pin probe. The research results can be used as reference for choosing moisture probe according to different soil.
The Application Practice of Green Building Technologies in Landscape Design
Authors: Fang Xiao Shan , Liang Ying Yu , Song Zhen Yu
Published: August 2013

In recent years, green building technologies have been developed greatly and quickly in China. While the green building technologies have been gradually matured, the application practice of green building technologies in landscape design has been increasingly widespread. Combined with the case study on the design of Tianlu-lake Forest Park entrance area, this paper is introducing the green building technologies in landscape design mainly from two aspects: Site design and construction detail. The green building technologies applied in this case were included: (1)Site Analysis: interpretation of the status quo; (2)Site Planning: conform to the terrain; (3) Architecture design: hidden in the earth; (4) Vertical design: suit local circumstances; (5) Vegetation design: the big trees plaza; (6) permeable ground; (7) greening parking lot; (8) Roofs Greening; (9)Retain the ecological corridor. Furthermore, this paper is reflected on this design practice, in order to benefit regional landscape design and study.
The Daxinganling Island Taliks Sheet Permafrost Feature
Authors: Ding Lin , Liu Yan Jie , Min Yi Mei
Published: August 2013

In order to study the features of permafrost in Daxinganling, based on t he methods of field investigation and borehole drilling, as w ell as theoretic analysis and the effects of frozen soil geological conditions, topography features, frozen soil type and permafrost classification the freeze-thaw depth(m),main physical indicators of the Frost soil, natural water content, plastic limit Liquid limit index were analysis .the thaw settlement and frost heave were studied in this paper.
Theoretical Study on Vertical Earth Pressure Calculation for Positive-Busied Culverts under High Embank
Authors: Fan He , Wang Ying , Ning Bao Kuan
Published: August 2013

High embank culverts have been widely used in railway, highway, municipal works, and other underground engineering. The vertical earth pressure on the culvert top is a key to design culvert structure correctly and guarantee it safety. Comparing three typical earth pressure theories, combined previous studies of experiment and numerical calculation, acted effect on high embank is analysis. Unstable soil arch effect and additional stress causing by differential settlement are presented. The two acted effect play a main role separately in different fill height. So, two-stage earth pressure calculation formula is given with a h0 limit fill height. The studies can give some reference to high embank culvert structure design.
The Research on 3D Building Model Based on Point Cloud Data
Authors: Huang Zuo Wei , He Shu , Qiu Luo
Published: August 2013

In order to improve the efficiency of 3D buildings reconstruction, based on the previous related advance technology and theory, It put forward a novel method for detecting building contours in irregularly triangulated point cloud data, On the condition that image resolution and density of the point cloud scale it adopt a new registration method, improve the LIDAR point cloud data with registration accuracy on remote sensing images. which make building reconstruction from these data sources feasible and reliable. It is also meaningful for virtual reality, urban planning, and simulation of disaster scenarios etc. finally the experimental results show that the proposed method can obtain more accurate results in comparison with the previous method.
Research on Thermal Environment of Village in Pearl River Delta Region
Authors: Li Kun Ming , Zhao Li Hua
Published: August 2013

At present the tradition layout and landscape characteristic of village are disappearing gradually in the Pearl River Delta region. With the rural residential branch out into high-density and multi-storey, the scale space in village is disappearing in the Pearl River Delta region. The wind field, temperature field, moisture and atmospheric particle distribution of village are changed along with the transition, which lead to the village thermal environment deteriorative. In view of this, the thermal environment of village is simulated, based on the 3D microclimate model ENVI-met. The simulation results show that the layout and the underlying surface structure of the village have a direct relationship with the air temperature and wind speed in village in the Pearl River Delta region.
Risk Assessment and Preliminary Study of Safety Management System on Construction Works
Authors: Gao Ping , Liu Xin , Tong Rui Peng
Published: August 2013

In recent years, the construction industry has flourished in China. Through investigating construction safety accident data of one city and combing with engineering construction site, construction works risk control system was built. We used fuzzy analytic hierarchy process to access the risk of the factors and made a conclusion that the safety management and construction conditions should be primarily controlled in construction works. Finally, a preliminary study was done about Construction Project Safety Management System.
Research on Construction Project Operation Mechanism of D-B Mode
Authors: Wang Jun Wu , Li Jun Ying , Hu Jian Wen
Published: August 2013

From1980s to nowadays, D-B mode is widely used for its incomparable advantages. It combines design and construction into an integral whole, not only reducing owner’s burden but giving contractor more space to perform his ability. On the basis of the analysis of D-B mode’s operation process and referring to other modes’ operation mechanism, this article establishes its operation mechanism. The purpose is, by establishment of operation mechanism, to provide theoretical support for engineering and promote this mode’s development.
The Analysis of Housing Consumption
Authors: Qi Xi Jing , Zhang Huan , Guan Bing Xue , Zhao Liang
Published: August 2013

This paper reveals generating mechanism and reasons of housing consumption by analyzing potential demand and the effective demand. Based on defect analysis of house price-to-income ratio and factors of influencing housing affordability, this paper puts forward the establishing method and process of resident housing affordability index. Finally, in order to keep the housing prices in a reasonable range and active the consumption of the urban residents, the corresponding measures and suggestions are put forward based on present residents housing affordability.
The Establish of Evaluation Index System of Freeway Travel Safety under Unusual Situation
Authors: Zheng Ying Jie , Gan Hui
Published: August 2013

Since there are many influencing factors about freeway traffic safety, in order to provide a basis for comprehensive evaluation of traffic safety, on the basis of comprehensively analyzing the existing evaluation system of traffic safety, the evaluation index system of freeway traffic safety is established according to freeway characteristic under the unusual situation, as well as considering the feasibility of data collection and the rationality of setting up the index, which gives the definition, quantitative formula and suggestion value of domain for the indexes.
Rethinking of Supply and Demand of Residential Land in Taiwan's Most Popular Housing Markets
Authors: Ho Tien Her , Li Chia Nung
Published: August 2013

In Taiwan, the strongest demand for housing is located in New Taipei City and Taoyuan County. It needs to use policies and systems to adjust the housing market timely and relieve the situation of supply and demand in the urban area. Therefore, the purpose of this paper is to investigate the trends of the population growth in Taiwan, understand the current status of land use in the metropolitan area, study the possible schedules and issues about the release and use of all kinds of residential lands and public lands, consult some foreign cases and laws and domestic land policies, examine the supply and demand of residential land as well as the relevant supporting systems, assess the feasibility of the introduction of land reservation system, propose a strategy of adjustment of the supply and demand of residential land as well as the re-use of public lands, build the system framework of the supply and demand of housing market, in order to reduce the risk of an imbalance of the supply and demand of housing market in the future.
Informationize of College Infrastructure Project Management Base on BIM Technology
Authors: Dang Wen Qiang , Niu Jian Qiang
Published: August 2013

Building Information Modeling is from the information technology used in construction industry. It gets the characteristic of each node in the whole life cycle of the construction project through the operation of the AEC project information. So as to provide timely, accurate and sufficient information for participants, especially the construction side in project, and ultimately achieve the project design, construction, operational efficiency and improve the quality. BIM technology has broad application prospects in the college infrastructure project management which lack of professional management and inefficient investment.
Analysis of Weighing Values of Post-Assessment Indexes for Graded Crushed Stone Base Based on Analytic Hierarchy Procedure
Authors: Yu Bao Yang , Ding Hong Yu , Tian Jia Yu
Published: August 2013

Based on analytic hierarchy procedure, established the post-assessment indexes system of graded crushed stone base project. Considering the road performance and economic benefit, societal and environmental benefit, the weighing values for various layers factors group of the graded crushed stone base project of Heng-Gai line are calculated. Analytic hierarchy procedure (AHP) method can effectively avoid making decisions subjectively and more scientific and reasonable to determine the weighing values of post-assessment indexes and it is an effective method to determine the weighing values for post-assessment indexes of the graded crushed stone base project.
Improvement of Analytic Hierarchy Process and its Application for Coal Mine Safety Assessment
Authors: Dong Si Hui , Zhao Yu Ku , Li Min
Published: August 2013

The calculation of weigh value and consistency of the judgment matrix of analytic hierarchy process (AHP) were studied in this paper. And the study was applied for coal mine safety assessment. Due to the particularity and complexity of the coal mine environment, to make sure the comprehensive assessment for coal mine system safety, analytic hierarchy process was usually used. It is an important problem to solve the weight value and consistency of the judgment matrix when applying analytic hierarchy process. To obtain the weight value and ensure the consistence of the judgment matrix is the main research direction of AHP. The genetic algorithm was applied to calculate the weight value and the consistency of the judgment matrix. And fuzzy comprehensive evaluation method was applied to evaluate the safety condition of the coal mine system with the method of weight value solution in this paper. Case study shows that the calcuation resuts of applying genetic algorithm to calculate idnex weight value is better than additional methods.
Systems Engineering Problems Related to Slope Ecological Protection Engineering
Authors: Yang Yue Shu , Xia Zhen Yao , Zhou Shi , Xiao Hai , Wu Bin , Xu Wen Nian
Published: August 2013

From the basic concepts and principles of systems engineering, the course system related to the slope ecological protection engineering is analayzed, which is a typical systems engineering. Talking the rock slope ecological protection engineering at Guizhou Guangzhao Hydropower Station for example, the application of systems engineering in the slope ecological protection engineering is researched. Using the technology of vegetation-growing concrete, the plan of protection and revegetation for this slope is turned out. It shows that systems engineering has a good applicability to slope ecological protection engineering.
Research on Hazard Identification and Assessment of Grade Cross Operations in Three Gorges Ship Lift
Authors: Wang Jian Ping , Nie Ben Wu , Zhang Feng Yu , Li Zhi
Published: August 2013

The Three Gorges Ship Lift project is characterized by a long construction period, an amount of construction tenders, a plenty of construction teams, a multiplex levels of practitioners, much overhead work, a broad range of construction equipment, risky interference among construction operations, and simultaneous construction at different levels and/or sides, which come into grade cross operations and bring a great deal of difficulties to safety management. As a starting point by grade cross operations in Three Gorges Ship Lift, this research is as follows: 1. Analysis of the processes in operating unit; 2. Risk identification to the Falling Accidents, Objects Strike and Collapse in according to the standards of accident classification; 3. Assessment to rank of hazard on the basis of the result that the risk identification; 4. Put forward the effective measures which reduce hazard in reference to appraise concrete clauses involved. Finally, this paper will give a example as embedded parts and make risk assessment more scientific through comparing with calculating.
Study on Optimal Selection for Soft Soil Foundation Treatment Methods of Port Engineering
Authors: Tang Peng , Yu Ding Yong
Published: August 2013

In this paper, advantages and disadvantages of single evaluation methods in solution selection of soft soil foundation treatment are analyzed and evaluated. Grey multilevel evaluation model combined AHP method and GRAP method is used in method selection of soft soil foundation treatment. Three kinds of soft soil foundation treatment schemes to be adopted in breakwater engineering construction in the west area of Yantai port are analyzed. And optimal selection of soft foundation treatment schemes is realized. It indicates that grey multilevel evaluation methods is reliable in results and possesses certain practical applicability and effectiveness, which provides a new way for optimal selection for soft soil foundation treatment methods of port engineering.
Study on Regularity of Coal Mine Blasting Accidents of China after 2000
Authors: Dong Ji Ye , Fu Gui , Chen Ze , Jia Shuai Dong
Published: August 2013

In this article, 133 massive colliery blasting accidents were statistically analyzed in China after 2000, mainly from two aspects of the accident number and death number, three aspects such as the type of accidents, the time rule of accidents, and provincial were analyzed statistically; 72 massive colliery blasting accidents caused by blasters were analyzed statistically with regard to the unsafe act of blasters. The statistical results show that the accident and death number presents a downward opening parabolic trajectory by year; The time of the accident is more concentrated, and the fate casualties happened frequently around March, July, November and December, February is the least; Coal mine gas accident is the main type of blasting accidents, and the coal dust explosion accident causes most deaths averagely; The past statistical method seriously neglected the seriousness of blasting accidents; The coal mine underwent massive colliery blasting accidents distribute widely, but six provinces (Guizhou, Shanxi, Heilongjiang, Sichuan, Henan, Hunan, Liaoning) are the key places of blasting accidents; There are 22 species of unsafe act to blasters, the most common unsafe act is no working face environmental inspection, material and tools be used unsafely and improperly. Coal enterprises, government, and regulators should strengthen the prevention of the key time, accident style, region, and the common unsafe blasting act to the regularity of coal mine blasting accidents.
Study on Evaluation of AGC Units to Participate in Frequency Modulation in Power Market
Authors: Chen Xiao Shuang , Zhou Yu Hui , Xiao Xin , Pan Deng , Yin Li , Tang Xin
Published: August 2013

Auxiliary service as the important component of the power market has been more and more attention, and of automatic generation control as the auxiliary services of one of the most important project. AS the auxiliary services market a service, it is necessary to the security of the power grid to influence evaluation. This paper according to North American electric power reliability of the CPS association, the share of the responsibility method, CPS evaluation indexes apportioned to each unit, can provide service for each single unit of evaluation, is beneficial to the healthy development of the market.
Study on the Relationship Between City and District Average Price by GAOT in Taipei
Authors: Yeh Hui Chung , Hsieh Tsu Kuang , Wang Tai Sheng
Published: August 2013

Since 2012, Taiwan enforces real price login, people can reference data and understand the changing price of various regions. The housing price of this study, therefore, is designated by unit price of trading contract. Taipei City, one of five municipalities in Taiwan, is found the unit price of trading contract is the most than others in an upward trend in its database from the third quarter of 2007 to the second quarter of 2012 (total twenty seasons). So, this study explores the relationship with others between unit price of trading contract overall in Taipei and unit price of trading contract of 12 districts. It is going to use autonomic architecture model with the ability of genetic algorithm operate tree (GAOT) to find out the best combination of variables and establish the relationship mode between each other. It also can assess overall real estate trends in Taipei City by important changing of districts. Research statistical analysis shows correlation coefficient (CC) for unit price of trading contract is 0.98 in Daan district and overall Taipei City. The result shows a high degree of correlation. After GAOT operator, besides, the establish assessment model could be found. It only uses unit price of trading contract of four districts. The unit price of trading contract of overall Taipei can be known. The coefficient of determination (R2) is up to 0.996 and root mean squared error (RMSE) is 0.406. The results are better than multiple linear regression (MLR) (R2=0.994, RMSE=0.490) and appear that GAOT can predict accurately of overall Taipei. It exist the relationship with each other between four districts and Taipei. In other words, the trend of variable is in coincide circumstance. The advantage of unit price of trading contract can be later used, therefore, this kind of mode to statistic four districts. The forecasting process for unit price of trading contract overall Taipei engages the government and civil society to assess overall real estate market of urban area.
The Study on Feedback Respone of Urban Land Use
Authors: Wu Nan Zhang , Ho Yu Feng , Wu Ching I
Published: August 2013

The rapid development of technology, industry, and civilization and the improper land production in the urban artificial ecosphere have led to severe environmental pollution and resource exhaustion. Reviewing the highly ordered and highly dynamic urban use operation mechanism is necessary for improving urban sustainable development. We used several methods based on urban ecology and sustainability of urban development theory, considered urban use as a system, and analyzed the urban land use system in terms of operation principle and the mechanism of society, economy, and environmental systems through system thinking. We also studied the causal feedback relationships of the urban land use system with system variables and divided it into five subsystems, namely, urban population, land use, industry economy, transportation, environmental ecology. We then constructed a feedback flow graph of the index and the circular operation of the common drive system to characterize effectively the state of urban land.
Land Conservation Strategies for Construction Design - Taking Sports Center of Zhaoqing High-Tech Zone as an Example
Authors: Guo Jia , Chen Zi Jian , Tao Zhi
Published: August 2013

The paper takes the design of the Sports Center of Zhaoqing High-tech Zone as an example to put forward an architectural design strategy which is mainly aimed at saving land and improving outdoor environment, and then to list some concrete strategies and discuss the land-conservation strategies application meaning in the field of public construction, especially in the field of public sports construction.
Comparison of the Aquatic Plants' Purification Effects on Eutrophic Water from Chaohu Lake Area
Authors: Ji Feng Quan , Wang Wei
Published: August 2013

This research has examined the aquatic plants ability of removing N and P with the experiment materials of the aquatic plants in the river system in Chaohu Region. Results revealed that Ludwigia peploides subsp, Vallisneria spiralis, Water Hyacinth and Cyperus papyrus contribute to removing TN in water to the effect which correlates the growth rate of the plants. 1) Particularly, Water Hyacinth, which grows the fastest among the sample plants, effects with the highest efficiency in removing TN, with the removal ratio of about 77%, 6.8 times that of the control group; 2) 4 aquatic plants function with higher efficiency in removing NH3-N than TN, and the plants in Test 8d remove NH3-N up to the removing ratio of 65-92% or so; 3) 4 aquatic plants tend to degrade NO3--N at the ratio similar to TN, and the absorptive effect of Water Hyacinth tops among the 4 plants, while under the same conditions, the papyrus remains the lowest with the absorptive ratio of only 31.7%; 4) and the regulation that the experiment plants remove the TP in water differs from TP degradation, for, in the early stage of the experiment, plants in Test 20d remove phosphorus at the high rate; however, in the later stage of the experiment, the concentration of phosphorus in water remains stable. At the end of the experiment, the phosphorus removal ratio reached 47.2%, while the ratio that the papyrus removed the phosphorus was only 21.5%. These data suggest that the aquatic plants in Chaohu Region can exert efficient remediation effect upon the eutrophic water.
A Study on Environmental Attitude, Environmental Behavior and Environment Issues of Living Place: The Questionnaire Survey for some Dwellers in Shenzhen
Authors: Wu Xiang Yang , Lu Wei Jia
Published: August 2013

Firstly, the study took the environmental attitude, environmental behavior of the city dwellers and the environment issues in living place for the target, and designed the questionnaire with the actual situation in Shenzhen. Secondly, the questionnaires returned back were analyzed in details. According to the conclusion from the statistical analysis for the questionnaires' data, the relationship of the environmental attitude and environmental behavior of the city dwellers was explored and the environmental issues were found out in the end.
Preserving the Historical Memory of Honolulu's Chinatown
Authors: Jin Shan , Huang Hai Bo , Geng Xin
Published: August 2013

Honolulus Chinatown is a unique component of urban fabric of Honolulu and part of the Hawaiis multicultural mosaic. This paper states the brief history of Honolulus Chinatown and its uniqueness. It analyzes how the historic buildings in Honolulus Chinatown are impacted by three sets of historic preservation legislation at National level, State level and city level. This paper addresses the design guidelines which make a significant contribution to retaining the essential character of Honolulus Chinatown. As one of Honolulus seven Special Districts, Chinatown contains a rich and varied array of historic fabric, but it also faces the development pressures. The aim of this paper is to share the Chinatown preservations experiences, and hopefully provides inspiration for Chinas historic preservation.
Analysis on Optimization Design Strategy for Sunshine Environment in Residential District Planning
Authors: Yang Shu Qing , Lu Mei Jun
Published: August 2013

In planning of residential district,the requirement of enough sunshine space often conflicts with the needs of increasing building density and saving land. From planning and building unit,by apt adjustment in building orientation,rational organization in building layout and optimization adjustment in architectural bodies,some effective and reasonable design strategies are proposed to optimize sunshine environment.Thus,sunshine environment in residential district can be improved,building density can be increased and land can be saved.
Effect of Different Temperature on Sewage Treatment of Constructed Wetlands Pretreatment System
Authors: Shui Yong Hong , Li Qiao Qiao , Song Hong Yan , Shui Ai She , Li Yuan Hui
Published: August 2013

In order to further investigate the effect of temperature on the performance of the pretreatment system of constructed wetlands, two pilot-scale units with dimensions of 2m in length and 1m in width were operated to treat decentralized sewage focusing on the removal efficiency of floated-bed bio-film (FBF) pretreatment system treating influent under different temperature continuously from April 2011 to March 2012 in parallel experiments in Chengdu, Sichuan Province. The results showed that the average removal efficiency of TP, TN, NH3-N and COD were (22.1%, 31.8%, 29.4% and 59.8%), (34.7%, 31.2%, 22.5% and 34.1%) and (53.1%, 56.8%, 53.6% and 41.8%) at different temperature of 10°C, 10°C to 20°C and exceeded 20°C respectively. The effluent concentrations of NH3-N reached Class II demand of GB 18918-2002 in different temperature. TN reached Class I-B demand when the water temperature was above 20°C. TP reached Class II and Class III demand when the water temperature was above 10°C and below 10°C, respectively. The TN, NH3-N and TP removal efficiencies showed to great influence on temperature, however COD on the contrary. Pretreatment system alleviated the hidden clogging troubles of the subsequent potential filter pools in wetland system to the maximum and ensured the continuous high-load treating ability of the wetland system. The pretreatment technology of the floated-bed bio-film system is a small, flexible and economical device which is worthy of promotion.
Research on Evaluation Model of Sludge Disposal Method in Sewage Plant
Authors: Zhang Wei , Zhang Jun
Published: August 2013

In view of the selection problem of sludge disposal method in the process of sewage treatment, this paper presents main influence factors on sludge disposal method in municipal sewage treatment works and establishes the comprehensive evaluation decision model of sludge disposal method. Using the analytic hierarchy process (AHP) to analyze and evaluate sludge disposal method, the relative weights of the influencing factors are determined and the optimal sludge disposal method is obtained. The establishment of this evaluation decision model can provide a scientific basis for the reasonable selection of sludge disposal method.
Study on the Building Climatic Design Method Based on Computer Simulation and Analysis Technology
Authors: Gan Yue Lang , Peng Bo , Chen Hong
Published: August 2013

Creating comfortable interior microclimate environment with comparatively lower energy consumption is one of the basic aims in building design. Combined with the comprehensive retrofit design practice of Wuhan construction building, the thesis investigates a set of practical building climatic design method which is based on computer simulation and analysis technology. Meanwhile, this article analyses the climatic design strategies of Wuhan construction building, and provides a references for architects in the conceptual design stage in the future.
Modeling of Natural Ventilation in Solar Chimney and Optimization of the Channel Profile by CFD Method
Authors: Su Ya Xin , Lei Fei Ning , Xue Yu Feng
Published: August 2013

The natural ventilation in solar chimney was numerically simulated by computational fluid dynamics method and the effect of solar chimney profiles was discussed. The flow rate through a rectangular solar chimney increased with the solar chimney height. The flow pattern in the chimney was laminar flow when the chimney height was lower than a critical height and then became turbulent flow as the height further increased. When designing the solar chimney, it is important to remember that the critical chimney height should ensure the air flow in the channel could develop to be turbulent in order to get a large flow rate. As the width of the solar chimney increased, the flow rate increased to a peak value and then decreased to a minimum value and then increased again. The reason was due to the curve flow stream and uneven pressure distribution formed when the chimney width increased. A modified chimney profile of linearly tapered solar chimney could remove the reverse flow and improved the flow rate by 25%.
Thermo-Environment Analyzer for Indoor Thermal Comfort Simulations in Green Building
Authors: Su Ying Ming , Huang Hsin Yao
Published: August 2013

In the face of climate change, city development should take into account the concept of energy saving and carbon reduction. This study aims to use 3D building modeling and computer simulation to assess the impact of the residential building balcony on indoor thermal environment. Pufangtian residential building in the northern Taiwan was selected as research object since it was the first to pass the Golden Certification set by Taiwan Green Building Rating System (EEWH). According to the average temperature from 1981-2010 meteorological statistics data issued by Taiwan's Central Weather Bureau, this study had calculated the warmest day & the coldest day as the time for simulation. The simulation results could provide residential building design, in addition to comfort and innovation, with the concept of energy saving and carbon reduction, which will further advance the development of Green Building.
Curriculum Innovation Integration of Digital Technology and Architecture
Authors: Yu Fang Da
Published: August 2013

Since the nineteen eighties, digital technology has penetrated into many aspects of higher education with hitherto unknown speed, forming some cross fields; "digital architecture" is a typical representative. But the national universities course construction is relatively backward which is the cross course of architectural design and digital technology .The article through analysis of " thought process of digital building" formation and difference with traditional sketch design thought of the teaching design to discuss the innovation and integration of digital technology and construction courses.
Characteristics and Applications of Luminous Fibers
Authors: Shih Ju Yi , Lai Shu Ling , Cheng Huai Tzu
Published: August 2013

The luminous fiber is a kind of functional material which is made from rare earth luminescent powders. This fiber is composed of raw material and long lasting rare earth luminescent material, and made by a special spinning process. If luminous fibers absorb visible light and store lighting energy, then it will continue to light in dark for more than 10 hours. The luminous fiber can shows a variety of colors, such as red, yellow, green and blue in the light, and display all sorts of colors, such as red, yellow, blue and green in the dark. The advantages of this fiber are with brilliant color, no requirement of energy consumption, and a kind of environmentally friendly high-tech product. This paper discusses characteristics and applications of luminous material and fibers, and the purpose is to promote such material into the potential market.
Research on the Development of Minority Residential Building – Taking Dai Nationality Buildings in Yunnan Province as an Example
Authors: Li Shu Ting , Zhou Kun
Published: August 2013

National architecture is the important carrier of national culture. Nowadays in China, in the process of new rural construction, there is a new challenge that how to improve the minority nationality residential building level as well as protect local building characteristics and avoid trend of thousand towns have the same look". In this article, taking Dai nationality building as an example, using research methods like architecture and anthropology, the minority nationality village update mechanism and influence factors are explored in respects of family structure, building development, value orientation and the organization method, then measures are put forward to protect minority village local characteristics. At last, it puts forward that interdisciplinary national architecture research system shall be established which covers humanity, economy, architecture and other courses, to carry forward and develop the varied and colorful national architecture culture in China.
Microstructure and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3 - Bi0.5(Na0.97K0.03)0.5TiO3 Ceramics
Authors: Wang Chun Huy , Wei Ming Qiu
Published: August 2013

(Na0.5K0.5)NbO3 with Bi0.5(Na0.97K0.03)0.5TiO3 with x≤0.05 has been prepared by the conventional mixed oxide process. X-ray diffraction analysis revealed that, during sintering, all the Bi(Na0.97K0.03)TiO3 diffuses into the lattice of (Na0.5K0.5)NbO3 to form a solid solution with a perovskite structure. A morphotropic phase boundary (MPB) between orthorhombic (O) and rhombohedral (R) was found at the composition 0.98(Na0.5K0.5)NbO3-0.02Bi0.5(Na0.97K0.03)0.5TiO3 [abbreviated as 0.98NKN-0.02BNKT] with correspondingly enhanced dielectric and piezoelectric properties. For 0.98NKN-0.02BNKT ceramics, the electromechanical coupling coefficients of the planar mode kp and the thickness mode kt reach 0.33 and 0.49, respectively, after sintering at 1100 oC for 3 h. The ratio of the thickness coupling coefficient to the planar coupling coefficient is 1.48. With suitable Bi0.5(Na0.97K0.03)0.5TiO3 concentration, a dense microstructure and good electrical properties are obtained.
Preparation of Gold Nanoparticles by Using Cholesteryl Compounds
Authors: Wu Zhen Dong
Published: August 2013

Gold nanoparticles were synthesized by two bolaform cholesteryl imide derivatives with different lengths of ethyleneamine spacers at a liquid-liquid interface. By stirring the aqueous solution containing AuCl4- ions with the chloroform solution of bolaform amphiphile, AuCl4- ions were transferred into the organic phase and reduced to gold nanoparticles. Spectral and morphological measurements indicated that both bolaform amphiphiles could serve as both capping and reducing agents. Different gold nanostructures could be obtained depending on the different spacers and the molar ratios of amphiphile to AuCl4- ions.
Multiplicity Flow Solutions in a Four-Sided Lid-Driven Cavity
Authors: Chen Kuen Tsann , Tsai Chih Ching , Luo Win Jet
Published: August 2013

In this study, the continuation method was adopted to explore the flow field states and flow bifurcation of incompressible flow in a four-sided lid-driven square cavity. The four plates moved at the same velocity and the opposite plates moved in opposite directions to drive the fluid in the cavity to flow. The flow bifurcation of the cavity flow when changing the driving velocity of the four plates simultaneously was discussed. The Reynolds number ranges of stable and unstable multiple solutions were determined from linear stability analysis of the obtained state solution. When the aspect ratio was 1 and the four plates were driven under the same velocity simultaneously, there were two pitchfork bifurcation points and two turning points in the flow bifurcation. Between the bifurcation points and turning points, there were two stable asymmetric solutions and one unstable symmetric solution existing. The flow bifurcation of the four-sided lid-driven cavity flow was analyzed by changing the driving velocity of two side plates when the top and bottom plates moved at the same velocity in opposite directions. According to the numerical results, when the Reynolds number of the top and bottom plates was fixed at 250 and the driving velocity of two side plates was changed, there were two non-crossing solution branches in the flow bifurcation, and one solution branch had strongly asymmetric stable solution. The other solution branch existed in the whole range of Reynolds number, and had one asymmetric stable solution. According to the bifurcation diagram, there were two asymmetric stable solutions and one symmetric unstable solution in the region of Reynolds number greater than 144, and there was only one asymmetric stable solution in the region of Reynolds number less than or equal to 144.