bluuebunny/crossref_metadata_2025 huggingface dataset:
Project Management Factors Affecting Green Building Projects: Case Study of Singapore
Authors: Li Yuan Yuan , Chen Po Han , Chew David Ah Seng , Teo Chee Chong , Xu You Quan
Published: August 2013

Green Mark, a certification for Green Building (GB), has become a compulsory requirement for all new buildings in Singapore. The aim of this study is to explore the controllable critical project management factors of Architectural, Engineering, and Construction (AEC) firms for delivering Green Mark certified projects and examine how these factors can be useful. Based on three case projects in Singapore, the factors influencing the success of GB were identified. It was also observed that the higher ratings of the building projects, the more management factors should be given proper attention. The research findings could assist project managers in managing the overall project performance and successfully implementing Green Mark certified projects more effectively.
Study on Information System Based on Gridding Management for Hydropower Project during Construction
Authors: Cai Hua Long , Ye Shi Sui , Xiao Xi , Wu Zhi Yu , Zeng Jing Fu
Published: August 2013

Since Lubuge hydropower station began to introduce the project management system, it has been greatly contributed to the efficiency of domestic hydropower project management. But the traditional and extensive management method is usually used at present. With the rapid development of computer technology, information technology, network and communications technology and their widely application in the information management for hydropower construcion, the information management process of hydropower project is significantly accelerated. From the gridding management theory in urban management system, based on the traditional management means, the concept and principle of gridding management theory is introduced and applied in the management for hydropower construcion, in which all items of hydropower project are worked as research subjects with the contract as a link so that the management level is more meticulous and the management objects are more precise. The whole spatial grid of hydropower construction is subdivided into a grid-based unit as the smallest unit and the method of full information is used to complete the refined management of grid units with their various attributes such as contract attribute, progress properties, investment properties, cost attributes, security attributes. The purpose is to achieve a refinement of construction management for hydropower project by means of grid-based meticulous management.
Project Cost Control Based on Dynamic
Authors: Hu Yu Ming , Liang Chuan
Published: August 2013

In this article, the deficiencies of the traditional methods of project cost control have been objectively analyzed. Through applying the process cost control of project, establishing method of management information systems and combining project cost management practices, the management system model of dynamic cost control has been explained.
Construction Project Cost Control under the Mode of List Valuation
Authors: Liu Ji Hong
Published: August 2013

This paper described the characteristics of construction enterprises when they were at various stages of bidding ,signing contracts, constructing, complements and settlements as well as the methods and measures in various stages under the mode of list valuation.
Rearch on the General Construction Layout of Tsingtao Bay Bridge
Authors: Yuan Quan , Wang You Zhi , Wang Ye Gang
Published: August 2013

Tsingtao Bay Bridge is the longest bridge spanning the sea in the world and the forerunner of large-scale sea-spanning bridges in China's northern frozen seas. Taking Tsingtao Bay Bridge as an example and combined with the practical project, this paper puts forward the basic principles of the general layout of large-scale sea-spanning bridges in China's northern frozen seas; develops the general layout of the marine bridge construction and corresponding research ideas, gives the optimal solution of the construction general layout and summarizes the advanced characteristics of the scheme; systematically summarizes the following problems of Tsingtao Bay Bridge in the general construction layout and gives the solutions. This paper could provide the reference for the general layout schemes of the following sea-crossing bridges.
Ordered Weighted Geometric Averaging Operator Multi-Attribute Decision-Making Model under the Preference Circumstances
Authors: Huang Jian Wen , Lu Da Lin , Zhang Ting
Published: August 2013

The pouring concrete dam construction program decision-making, decision-makers preference program attributes should be considered in addition to consider the objective attributes of the options. In this paper, on the basis of traditional ordered weighted geometric average operator (OWGA), considering the preference attributes analysis, establish OWGA operator multiple attribute decision making model. The model is applied to the dam concrete construction program decisions of hydropower project to verify the feasibility and reasonableness of the model.
Research on the Relationship between Agricultural Information and Urban Agriculture Economic Growth
Authors: Shi Heng Hua , Shi Ya Jun , Xu Guang Cai
Published: August 2013

Through the universal application of information technology and intelligence tools, agricultural information not only promotes the development of traditional agriculture to modern agriculture, but also promotes the economic growth of urban agriculture based on rural service. With Beijing agricultural information development, we propose a non-weight agricultural information index model based on the analytic hierarchy process. The relationship of agricultural information and urban agricultural economic growth can make some positive measures to further accelerate the economic development of peri-urban agriculture.
Culture and Arts Experience in HOPSCA
Authors: Yu Fei Fei , Ju Xian
Published: August 2013

Introducing culture and arts into the HOPSCA, it is helpful to improve the quality and image of the HOPSCA, and will benefit the popularization of culture and art. The article shows the manifestations of the culture and art in the HOPSCA, and then takes the Chengdu MixC to discuss the cultural and artistic experience in the HOPSCA.
Discussing the Influence of BIM for the Construction Project Cost
Authors: Zheng Hao Kai , Cao Jian Wen
Published: August 2013

The phenomenon of budgetoverruns is common in the construction projects. The lack of overall projectinformation is the important reasons of causing budget overruns. BIM, as a kindof highly integrated information model, will play a positive role in thebuilding life-cycle cost control. This paper points out the disadvantages oftraditional cost control method, introduces the influence of BIM on costcontrol in different stages of building life-cycle, and briefly describes the present situation and futuredevelopment of BIM.
Based on the DEA Model of Security Housing Construction Efficiency Research
Authors: Li Da , Du Qin Jun
Published: August 2013

Social indemnificatory housing is in the construction of house of our country town with relatively particularity a type of housing, it is usually refers to according to the national policy and legal regulations, unified planning, by the government as a whole, to provide specific people use, and on this kind of housing construction standards and sales price or rent standard to limit, the social security function of housing. The paper USES data envelope analysis method, in order to hebei province various administrative city in January 2012 to August safeguard room construction progress data as the research object, analyses the related statistics and analysis, compare the city in hebei province administrative safeguard room construction progress, obtain the progress development not balanced result, among them, the individual administrative city obviously lag behind other locally administratered level. We hope that this paper to ensure room construction efficiency is evaluation provide guidance.
The Research of Risk Management in Project Contracts
Authors: Zhu Rong Jie , Peng Ying , Sun Yang
Published: August 2013

The risk of project contracts is the uncertainty that exists alongside a contract. It is the pressing issue for contractors to prevent and control risks as the peculiarity of building projects brings about series of uncertain risks. By going through the management process of contracts for construction projects, this thesis analyzes the sources of risks and gives ideas and suggestions for designing effective measures to avoid project contracts risks.
Explore and Analyse Construction Project Risk Management
Authors: Zhang Hai Yan , Zhao Jin Wei
Published: August 2013

The engineering construction item has a period to grow, the complicated degree is big, invest a great etc. characteristics.Many risk factors exist in the process of the engineering Construction. It will influence engineering item smoothly progress If can not effectively work well to guard against in time. Therefore, it have important meaning to strengthen a construction engineering risk management work. This text will carry on certain analysis to each risk factor of construction engineering item, and inquire into further how science, effectively strengthen a construction engineering risk management to work, then promise engineering item construction smoothly progress.
The Impact of Development Speed on New Product Success: A Meta-Analysis
Authors: Gao Peng Bin , Yu Bo , Wu Wei Wei
Published: August 2013

Despite years of research on new product development suggesting that development speed is an important prerequisite for product success, the empirical results show conflicting conclusion. To offer much needed clarity, this study use a meta-analysis approach allowing the systematic integration of 45 empirical findings from existing research. The findings reveal that development speed has a positive impact on product success. Using subgroup analysis and meta-regression analysis, results show that the culture and industry characteristics, research level, informants and variables measurement are found to moderate the relationship between speed and new product success. These findings have important implications for further research.
Analysis of Different Building Materials Used in Heritage Protected Areas in North China
Authors: Zhang Xiao Yu , Sun Yong Qing , Lan Xu , Bai Jian Ming
Published: August 2013

This paper first reviews the definition of protected areas under Chinese law, and it pays attention to problems of using four types of building materials in protected areas: traditional building materials produced by old craftsmanship, traditional components collected from the torn down old buildings, antique-style building materials made from industrial production and well-designed modern building materials with Chinese characteristics. By elaborating on the four different selections of building materials, it analyses the advantages and disadvantages of each selection.
Based on Factor Analysis of Building Influencing Factors System of the Highway Construction Project's Cost
Authors: Xia Li Ming , Song Kun Lin , Deng Zhi Qiang
Published: August 2013

Building of highway construction projects cost influencing factors system is the key to cost controlling. This paper analyses actual division of the projects cost about section two of coastal avenue north and coastal avenue south extension and Nan gang highway, and draws out the cost of primary and secondary influencing factors. Besides, based on factor analysis this paper establishes influencing factors system of highway construction projects cost, and provides reference for cost control.
Study on the Engineering Cost Management Systems
Authors: Zhang Hua Zhi , Pan Fang , Zhang Zhen Hua , Cheng Cai Yun
Published: August 2013

A basic engineering cost management system is basis about the engineering cost management for national or regional. As the main basis of engineering cost is determined by two factors are engineering quantity and unit price, so the basic engineering cost management system should reflect the management and control model in the project of "quantity" and "price" of these two aspects in any country or region.
Research on Organization Design of Large-Scale Construction Programme in China from the Perspective of Service-Dominant Logic
Authors: Xu You Quan , Zeng Da Lin , Wang De Dong , Qi Xia
Published: August 2013

The traditional administration-driven organization, construction production-oriented, has become the bottleneck which restricts Large-Scale Construction Programme (LSCP) management. Service-Dominant Logic provides a new perspective for the innovation and research of LSCP. The concept of Service-driven organization (SDO) of LSCP was proposed through analyzing the current situation and problems LSCP organization. Besides, six components of SDO organization design, including strategy, culture, structure, driving force, information and knowledge, were discussed. The conceptual model of SDO of LSCP was established.
The use of Past Projects as Means to Enhance the Education Experience of Civil Engineering Students
Authors: Leong Lau Teck , Elleithy Wael
Published: August 2013

In view of the importance of undergraduate students cognitive learning experience in higher education, this study was conducted in order to investigate the effectiveness of the use of past civil engineering projects as case studies. The outcomes indicate that the use of case studies enhances the students educational experiences that conduce to cognitive learning and motivate for future ethical practice. In general, the use of case studies reassures the students aspiration in becoming practicing civil engineers upon graduation.
Engineering Project Risk Interpretation Structure Model Building and Analysis
Authors: Zhang Rui
Published: August 2013

The rapid development of construction engineering brings profit, but it also brings risks we only for engineering project risk correctly understanding, objective evaluation, can reasonably and control the negative effect of the risk based on the ISM principle, choose the project risk, use the method of reachability matrix and the various factors construction engineering project risk factors explain structure model, through the various risks of progressive relationship between, and puts forward the managers should be based on different factors influence degree to differentiate between, and find out the root cause, this paper focuses on the analysis and control of the main project risk.
Integrated Risk Management Based on Life Cycle of Engineering Project
Authors: Luo Fu Zhou , Han Yan Hu
Published: August 2013

Risk management is the key factor to projects success, while the integrated risk management based on the life cycle of engineering project is an inevitable trend. With project lifecycle management and integrated thought as theoretical basis, this paper has introduced some related concepts about the integrated risk management based on the life cycle of engineering project, constructed the risk management model based on the PRAM (project risk analysis and management) method, and has discussed integrated management of project risk, combined with the characteristics of modern engineering projects.
Technique Transmission of Flemish Church Buildings in China: Works of Scheut Fathers
Authors: Luo Wei
Published: August 2013

Church missions have performed substantial missionary work and experienced many twists and turns in Modern China. Contacts and interchange between Chinese and Western culture became intense. A great number of churches were built to accommodate the Scheutist missionaries in the remote counties beyond the Great Wall. Many of these churches are still used, while others have been abandoned or fallen into disrepair. These churches bear witness to the architectural transmission and culture exchange between the West and East during the modernization process. I will trace the history of Scheut Missions in northern China, and focus on their church buildings. Through the comparison of the Belgian churches with the Chinese variants, the relevant similarities and differences in architectural design and construction will become evident within a global environment.
The Influence of Group Efficacy, Group Identification on Group Performance of University Students Organizations
Authors: Li Xiao Jun , Jia Liu Zhan , Zhang Yu Mei
Published: August 2013

The current research test the impact of group efficacy and group identification on group performance within the university student organizations. Through questionnaires survey about group efficacy, group identification and group performance on the university students organizations members contained 127 male members and 166 female members. The hierarchical regression analysis shown that standard coefficient of group efficacy and group identification on group performance are .509(p<.001) and .304(p<.001) respect. The results proved that group efficacy and group identification has positively significance effect on group performance. The implications of these results for promote group performance was discussed.
The Study of the Factors Affecting Urban Residential Land Price
Authors: Jiang Hui , Jia Sheng Hua , Huang Yan Feng
Published: August 2013

In this paper, we use the 2005-2010 data of 35 large and medium cities in China to establish a panel model, and fixed effects model is used to estimate the factors that affect the price of urban residential land. The empirical results show that urban infrastructure, the level of economic development, the living standards of residents and the size of the population have a significant positive impact on urban residential land price.
Study of the Integrated Evaluation Index System of the Design of Energy-Saving Building and the Optimization of these Designs Based on FAHP-Entropy Weight
Authors: Ye Jun Bo , Shen Long Jiang , Gu Peng
Published: August 2013

The design stage of an energy-saving building has a great impact on energy-saving effect. By data analysis and expert interviews, an integrated evaluation index system is established to instruct designers to adjust the designs to get a more energy-saving building. And based on the evaluation index system, the author selects some indexes to optimize the energy-saving designs by FAHP-entropy weight decision-making method.
The Application of Box-Cox Transformation in Selecting Functional Form for Hedonic Price Models
Authors: Wen Hai Zhen , Bu Xiao Qing , Zhang Ling
Published: August 2013

Box-Cox transformation allows functional forms more flexible. On the basis of the principle of model optimization, an empirical study is made for housing market of Hangzhou City. By collecting 2417 housing data in Hangzhou City, a housing hedonic price model with Box-Cox transformations is set up with 18 factors as housing characteristics. The model is estimated after the grid-search procedure by using MATLAB and SPSS software, and the statistical test shows that the logarithmic function is the optimal form. The model comparisons in the fitness and forecasting performance indicate that the logarithmic model is superior to other three models of the linear, semi-logarithmic and inverse semi-logarithmic. Empirical analysis suggests that the Box-Cox transformation is valid and feasible in choosing functional forms, can be used to optimize hedonic price models.
General Situation of Constuction Machinery Development in Mechatronics Technology
Authors: Tian Mi , Zhang Xi Wei , Zu Hai Ying , Qiao Yi Na
Published: August 2013

This is an introduction to brief development of construction equipments intellectualization and information with typical technology. Providing that the application of mechatronics which includes electronic monitoring, automatic alarm and fault self-diagnosis, a new type of transmission device, leveling system and vertical system, automated or semi-automated control, automated or semi-automated control and the construction machinery remote monitoring and service system in the field of mechanical engineering. This article describes the mechatronics trends in construction machinery.
The Full Culture Gates of Chinese Folk Houses - Especially the Gates of Bai Ethnic People in Dali
Authors: Li Meng Bi , Li Zhe Kun
Published: August 2013

Gates of traditional Chinese folk houses are full of culture and record much important information. To study them is very worth and very help for understanding a nationality, history and society development. The Bai folk house gate is a typical one and now remains better in China. This paper pointed out some key information of the gate and is very useful reference for protecting and developing valuable architecture culture.
Analysis of Regional Characteristics for Chinese Traditional Dwelling
Authors: Wang Xue Yong , Dong Wen , Zhou Bo , Li Shuai
Published: August 2013

This article describes the regional characteristics of typical Chinese traditional dwelling, dissect its generated origin is the result of both the natural and social environment where located. With the acceleration of urbanization process in China, the conflict of traditional dwelling with modern urban construction is more and more obvious, traditional dwellings are facing an unprecedented dilemma, inherited or abandoned worth pondering. This article illustrates the natural view implicated by the traditional dwellings culture, to guide people to innovate architectural style with Chinese characteristics, and to make the urban construction with Chinese characteristics.
Traditional dwelling in China has a long history and rich type, is a gem of architectural culture. Traditional residential architecture has its own unique artistic style and characteristics.There are so many different types, mainly because China has vast territory,different geographical climate and different form of local materials and construction techniques. Therefore, regional is the main line to research and analysis the Chinese traditional dwellings, and the view of nature that " Harmony in human and nature "is a common beliefs contained in it.
Exquisite Characteristic in Peter Zumthor's Architecture Works
Authors: Jia Jiao Jiao , Liu Song Fu , Yang Fan
Published: August 2013

Peter Zumthor's works show exquisite quality, the paper studies mainly from the elements of architectural entities, the means of sequence and atmosphere of space, and the details of construction and architectural members, tries to interpret characteristics of Zumthor's works, perfect his theories and ideology.
Study on Description Method of Architectural Plan
Authors: Yun Wu , Funito Miyamoto
Published: August 2013

The research is based on the study of CJ·Bloch, who presents a digital way to descript the rectangular plan. This thesis derives the mathematical model from the Bloch work, and discusses its applicable scope on different patterns, as well as its application on architectural plan.
Comparative Study on Traditional Settlement Patterns of Guangfu and Chaoshan
Authors: Pan Ying , Zhuo Xiao Lan
Published: August 2013

Guangfu and Chaoshan are the main settlement areas of Guangfu clan and one branch of Fulao clan, which are river delta and coastal plain respectively, both in good farming conditions. The diversities in micro geographical conditions, development history, social and financial mechanism cause distinctive differences in the patterns of their settlements. This paper aims at laying out the differences along with discussions about factors - especially in the aspect of socio-culture rather than nature - that cause the differences.
The Investigation of Environment and Behavior Transition under the Influence of “Zou Xikou” Immigration in Inner Mongolia
Authors: Yin Jun Feng , Bai Rui
Published: August 2013

From the beginning in the Ming and Qing dynasties until the end of the republic of China, “Zou Xikou” immigration movement lasted more than three hundred years, and has changed the environment of Inner Mongolia. The migrants to the han nationality and the local Mongolian’ behavior all changed accordingly, their way of life and production, way of living has also changed accordingly. This change promoted the formation of the village and the city in Inner Mongolia, which is the miniature of current Inner Mongolia. This article discusses the environment and behavior transition under the influence of “Zou Xikou” immigration in Inner Mongolia. We study this transition from the historical background, production mode, population structure, and city building four angles. We also do the restitutive description, which is mainly aimed at grassland agriculture, population of localization, living centralization and regional architecture, in order to better explore the regionalism of Inner Mongolia.
Discussion of Strategies on Vernacular Dwellings Transformation, Utilization and Renovation
Authors: Pan Ying , Ye Xin
Published: August 2013

With the deepening of the process of urbanization, the survival of the traditional vernacular dwellings is becoming increasingly difficult.To be rebuild,to be retain for commemoration,to be renovate for a new life,the fortune of vernacular dwellings is unsure.Chinese architects are confused by this question.The issue tries to figure out the current situation and the prospect of vernacular dwellings protection and development,with the study of different patterns of vernacular dwellings transformation,utilization and renovation.
Analysis of the Present Situation of Research on Soundscape and Han-Chinese Buddhist Temples
Authors: Zhang Dong Xu , Liu Da Ping , Cui Ze Lun , Xiao Meng
Published: August 2013

In recent years the community has continued to raise awareness about the protection of historic buildings including Buddhist temples, but unfortunately the protection of the sound environment, which is an important part of the overall environment of historic buildings, is often ignored, and there is still a lack of research on the relationship between the sound environment and the traditional temples space in scholarly circles. Soundscape theory studies the sound environment from the perspective of sound, the environment and the listener, differing from traditional acoustics in considering peoples awareness and evaluation of sound in a special condition. Therefore, using soundscape theory as its major tool, it is considered to be future research direction that the impact of spatial elements in Han-Chinese Buddhist temples on the acoustic environment. By means of acoustic data to make a quantitative analysis of architectural history, it will in theory broaden the research domain of architectural history and lay a solid foundation for Chinese religious soundscape science, and in practice, will support the protection of the acoustic environment of historic buildings as intangible cultural heritage, and provide sound field parameters for the construction of a new temple.
Inner Mongolia Grassland Herdsman Residential Patterns of Behavior - Wu La Gai Grassland as an Example
Authors: Ma Ming , Li Yong , Kong Jing , Wang Juan , Zhang Min , Wang Wen Ming , Su Hao , Qiu Li , Kang Jing , Chen Wen
Published: August 2013

With the deepening of living space, the living behavior gradually become the basis of living space, Based on the steppe nomads living behavioral interviews, Analysis of the steppe nomads living behavior, Provide design basis for the study of the grassland dwelling pattern.
Study on Technology Status and Development Strategy of Green Building in Xi'an Area
Authors: Li Xue Ping , Yan Zeng Feng
Published: August 2013

Through analysis of the technology status of the green building in Xi'an area, targeted Raised the technology development strategy of green building to adapt to the characteristics of the region, such as improve local standards of green building technology system, strengthen the propaganda and training on green building knowledge, improve energy efficiency, use of renewable energy, good publicity and promotion of exemplary green building, full application of green building materials, use of non-traditional water sources and recycling water, etc., in order to provide a reference for the development of green buildings in Xi'an area.
The Present Situation and Trend of Green Building Development in China Dongying City
Authors: Song Yu Xi
Published: August 2013

In recent years, with the accelerating global resources depletion and increasing environment deterioration,sustainable development has become common understanding of best strategy in long-term development of human being. Green building has been the hottest keyword in building industry. This paper expounds the updated research of green building situation and trend,and investigate the green building development of DongYing City. The results indicated that green building development in China was still in the primary stage,the evaluation of green building would become national popular,the number of certified green building would increase year by year,and the development of green building in China was in the stage from light green to dark green.
Photosynthesis of Plant and Photovoltaic Integrated Application of Buildings
Authors: Yin Bao Quan , Wang Yi Ping , Zhu Li , Cui Yong
Published: August 2013

As the most important means of solar energy application, photovoltaic performance has significant impact on human energy systems, much like the role of photosynthesis in the plant of ecosystem. In this aspect, photovoltaic and its integration with building and urban ecosystem are related to the theory of ecology, and the balance between society and nature. This paper puts forward the bionic conception of plant and on the basis of the recent researches on photosynthesis to interpret current solar utilization methodologies, especially the building integrated photovoltaic (BIPV), and the BIPV impact on urban environment. Based on the performance evaluation of the new photovoltaic module with green electricity, heating and cooling poly-generation, a hint was given that eco-solar buildings need learn from the process of photosynthesis of plants and the closed cycle of nature.
Thinking on the Water System Design Method of Intelligent Civil Ecological Agriculture Residential Buildings
Authors: Li Xiao Di , Hu Wei Ping , Yang Xiao Ping
Published: August 2013

The intelligent civil ecological agriculture residential building is the authors creative idea. The design of its water system, as one of the important contents, means providing water according to the demand of the vegetables and flowers growth intelligently, instead of watering by labors. In this way, humans planting experience and intelligence will be endowed with building facilities, thus constructing a small automatic family farming system with the symbiosis of man, machine and plant. Based on new achievements of modern science and technology, a reasonable energy-conservative and artistic water supply system is studied with logical method and application. In future, intelligent water supply in agriculture residential building is the trend, which could be achieved by intelligent application of modern electronic information technology.
On-Site Inspection and Analysis on Earth Architecture’s Enclosure Construction
Authors: Yu Hong , Sun Hai Jun
Published: August 2013

In order to assess the human settlements situation of earth construction and analyse Environmental protection and energy saving effect of the earth construction's enclosure-construction, we choose Jinan's earth construction--adobe houses--to conduct the detection and analysis of energy saving and were based on the factual date to calculate enclosure-construction's heat transfer coefficient K and the actual energy consumption to analyses the influential factors of the energy consumption and determine the main part of the energy saving effect of energy consumption based on the Extensive research of the ecological environment and earth construction in Shandong province. The results show that the typical enclosure-structure with good heat saving capacity can maintain the indoor thermal stability. Through the calculation of heat retaining structure, we can know that the tested adobe house's energy consumption is larger than normal house. it suggested that the earth construction has the characteristics of better energy saving and environmental protection. seeing that the factual tested adobe house's lower intensity , bad decoration and imperfection ,we put forward the suitable earth buildings scheme of the construction of new countryside.
The Application of Community Co-Management in Ecological Function Area Planning - Taking the Example of Planning for Sustainable Development of Xing’an Ecological Function Area
Authors: Pang Bo , Zou Hong Fei , Lin Feng
Published: August 2013

As the latest concept of ecological protection, community co-management principle was considered to be the best way to reconcile the contradictions between conservation of natural resources in ecoregion and the development of surrounding community. The Xing'an ecological function area is an important water conservation forest ecosystems base of China, priority must be given to its planning sustainability of ecological benefits. Therefore, we introduce community co-management principle to Xing'an ecological function of planning for sustainable development. By enhancing propaganda and education, the assistance to community information, technology and services to enhance the enthusiasm of the community residents, develop the eco-economy, and raise awareness of ecological protection, ultimately achieve a win-win situation of ecological conservation and the community social and economic interests.
A Experimental Study on the Influence of Fly Ash, Slag Powder on the Property of Concrete
Authors: Li Yuan , Jia Lei , Liang Xu Li
Published: August 2013

In this paper, the role of fly ash and slag powder on the concrete are introduced. Through the experiments that mixing up fly ash , slag powder or two kinds of mineral admixtures in the concrete, the characteristics of property of concrete at different times are learned. The results show that the property of concrete are better when two kinds of mixtures are used than mixing one of them, and the most appropriate proportion of mixing is 30%~40%.
Preparation of Ultra-High Performance Concrete Using Phosphorous Slag Powder
Authors: Peng Yan Zhou , Huang Jin , Ke Jin
Published: August 2013

Reactive powder concrete (RPC) is an ultra-high performance concrete (UHPC). Cement and silica fume content of RPC are generally rather high compared to the conventional concrete. The aim of this paper is to decrease the cement content of RPC by using phosphorous slag powder. Firstly the effect of grinding time on the activity index of phosphorous slag was investigated. And then, the mix proportion design of this UHPC containing phosphorous slag powder and silica fume was done through orthogonal design. The results indicate that the utilization of phosphorous slag powder in RPC is feasible when the dosage of phosphorous slag powder is about 35% (by weight of the binder) and the water-binder ratio is less than 0.18. By substituting phosphorous slag powder for a part of cement and keeping the water-binder ratio at about 0.14, UHPC specimens whose content of mineral admixtures, including phosphorous slag powder and silica fume, was about 40%~50% (by weight of the binder) were obtained after they had been cured in 80 °C water for 72 hours. The compressive and flexural strength of those specimens was more than 150 MPa and 20 MPa respectively.
A Study of the Preparation and Properties of the Concrete for the Bearing Platform of the Xiamen-Zhangzhou Sea-Spanning Bridge
Authors: Hu Hong Mei , Wang Hao , Du Rong Gui , Zheng Bo Shen , Yi Yun Kun , Shen Ya Wen
Published: August 2013

In light of the requirement of mass concrete for the bearing platform of the main tower of the Beicha Main Bridge of the Xiamen-Zhangzhou Sea-spanning Bridge, and in view of the hostile environmental conditions for the project, a study was conducted on the technology of preparing high-performance marine concrete for the bearing platform of the sea-spanning bridge in order to control concrete temperatures and achieve the desired durability for the bridge. With an optimal design which features the binary admixture of fly ash and slag and an optimal concrete mix ratio, high-performance concrete with lower hydration heat and strong resistance to chloride diffusion and cracking was successfully developed for the bearing platform of the sea-spanning bridge.
On Comparison between Reinforcement Electricity Accelerated Corrosion and Natural Corrosion of Concrete
Authors: Li Sen , Yan Jun Yin , Wang Xiao Gang
Published: August 2013

Electricity accelerated corrosion is a common method to obtain corroded reinforced concrete specimens in current experimental research, and it has some relevance and differences with natural corrosion. The paper undertakes a detailed comparative research on the relevance and differences of the two corrosion conditions from the corrosion mechanism, the corrosion process, the corrosion rate, the electric flux and corrosion features, and this provide a better understanding of the research achievements based on accelerated corrosion.
Experimental Study on Strength and Failure Characteristics of Reinforced Concrete Plate under Complex Stresses Conditions
Authors: Yang Guang , Zhao Zuo Zhou , He Xiao Gang
Published: August 2013

To study the biaxial strength and failure characteristics of reinforced concrete in the state of biaxial tension-compression stresses and provide some suggestions for the practical engineering design, 3 one-third scale reinforced concrete (RC) plate specimens are tested. The results indicate that, in biaxial tension-compression stresses, reinforced concrete cracks in the direction normal to the principal tensile stress direction and presents the characteristics of shear failure modes. The test device could simulate the required stress condition. The compression strength of reinforced concrete is obviously lower than the uniaxial strength fc. The reduction factor k is about 0.55~0.75 which varies with different tension-compression force ratio. Concrete material takes part in the tension process of reinforced concrete and shares part of the tension, while the share ratio decreases as concrete cracks gradually.
Study on Fracture Criterion for Concrete and other Brittle Materials
Authors: Zheng Heng Xiang , Zhao Qian
Published: August 2013

The main defect in concrete and other brittle materials was the crack in the materials which would cause the structures brittle fracture. So it is very important to study the development of cracks in the concrete structure. This article researched the criterion of the shortest distance from the crack tip to the plastic zone edge for concrete and other brittle materials based on the least distance in plastic zone theories. The numerical example verified that the proposed criterion could solve the low stress brittle fracture phenomena in engineering better.
Study on the Compressive Strength and Mixing of Ultra-High Performance Concrete
Authors: Feng Su Li , Zhao Peng
Published: August 2013

The test in order to obtain liquidity, higher intensity ultra-high performance concrete(UHPC), in the course of preparation, high intensity quartz sand to replace the ordinary sand,reasonable mixture ratio control low water-cement ratio,the incorporation of part of the test piece ofsteel fibers, produced eight specimens . In the ordinary molding and the standard conservation 28d thecase, the ultra-high-performance concrete compressive strength of more than 170MPa.Thepreparation of the test method and test results will provide the basis for further study of the law of themechanical properties of ultra high strength properties of concrete.
Experimental Investigation of the Mechanical Properties of Jointed Rubber Wood Using Two Types of Adhesives
Authors: Nadir Yashida , Nagarajan Praveen
Published: August 2013

Wood, a potentially good construction material in terms of sustainability, has less structural use now in India. Due to easy availability, low cost and good working quality there is a scope for the value addition of rubber wood in the Country. Finger jointing technology benefits high economic advantage by upgrading rubber wood. There is a dearth of information for the influence of adhesive on the mechanical properties of jointed rubber wood in India. This study was conducted to evaluate the effects of adhesive type on the end jointing and face gluing of rubber wood. The end jointing adopted for the study was the most common finger joint configuration of the wood industry in Kerala, the largest producer of rubber wood in the Country. The adhesives were polyvinyl acetate (PVAc) and phenol resorcinol formaldehyde (PRF). The face gluing evaluation was done based on the adhesive bond strength and percentage wood failure. The integrity of glue types to delamination was also tested .The results of the study have indicated glue type has no statistically significant effect on modulus of rupture, modulus of elasticity of finger joints and the shear strength of adhesive bond in the dry stage with the same wood failure percentage. The joint efficiency of PRF adhesive was superior to PVAc in tension and compression of finger joints. The PRF adhesive exhibited excellent performance in the exterior exposure condition durability test.
Bearing Capacity Predicting Method on Mortar-Rock Interface of Compression Type Rock Anchor
Authors: Lu Li , Wu Shu Guang
Published: August 2013

To predict bearing capacity on mortar-rock interface of compression type rock anchor, the failure model of fixed anchor length is established. The maximal shear stresses on the interface in front of the bearing plate are determined based on tests. The relation of maximal shear stress and fixed anchor length is assumed. Double exponential function curves are adopted to simulate the ultimate state of the fixed anchor length. Two parameters are introduced to adjust the curve shape. According to the results of the field test, the values range of the parameters in soft rock is determined. After comparing ultimate bearing capacity measured in test with predicting value, it is shown that the empirical formula can calculate the bearing capacity of fixed anchor length reasonably. Compression type rock anchors have more capacity than ordinary tension type anchors and the capacity is convergent gradually with fixed anchor length increase.
Experimental Study on Pavement Performance of Emulsified Asphalt Cement Concrete
Authors: Chu Hao , Zhang Jun , Lu Yan Hua
Published: August 2013

Based on the research and indoor experiments, this paper investigates the mixing and curing techniques, pavement performance, and influencing factors of emulsified asphalt cement concrete. The results indicate that mixing sequence of raw material and curing condition have great impact on the strength of the mixture. Adding cement to mixture can improve the pavement performance of mixture greatly. However, increasing the content of emulsified asphalt has opposite effect. Proper content of emulsified asphalt will ensure the bonding strength and waterproof property of the mixture. The critical factors that influence the pavement performance of emulsified asphalt cement concrete are asphalt cement ratio, water cement ratio, content of emulsified asphalt and cement, sand percentage, and aggregate gradation.
A Markov Chain Monte Carlo Technique Based Optimal Mix Design of Porous Concrete
Authors: Jin Lu , Yan Zhu Ge
Published: August 2013

Porous concrete is one of the innovative and promising concrete products, which is featured with a relatively high water permeability rate. Compared with conventional concrete products, due to the lack of fine aggregates in the mix design of porous concrete, the void spaces between the coarse aggregates remains unfilled and causes a large amount of porosity in the hardened concrete mass. On the other hand, the strength of porous concrete is usually lower than that of the conventional concrete products due to the lack of fine aggregates.
For the purpose of achieving a relatively high strength of porous concrete while maintaining a good permeability of pavements, the mix design of porous concrete is modeled as a Markov Chain Monte Carlo (MCMC) system and a Gibbs Sampling method based approach is developed to approximate the optimal mix design. The simulation results show that, by using the proposed approach, the system converges to the optimal solution quickly and the derived optimal mix design achieves the tradeoff between the compressive strength and the permeability rate.
Experimental Study on Flexural Performance of PVA Fiber Reinforced Cement-Based Composites
Authors: Han Jian Ping , Tao Jin Yu
Published: August 2013

As one kind of Engineering Cementitious Composites (ECC), polyvinyl alcohol (PVA) fiber reinforced cement-based composites has specific strain hardening characteristics and multiple cracking properties. Thus it can exhibit excellent ductile properties and damage tolerance, which makes it being a potential material for critical components of seismic resistant structures. In order to investigate the flexural performance of PVA fiber reinforced cement-based composites, beam-type and sheet-type specimens made from PVA fiber reinforced cement-based composites were designed and four-point bending tests were conducted. The flexural toughness and flexural strength of PVA fiber reinforced cement-based composites were assessed via load-deflection curves. Experimental results indicate that PVA fiber reinforced cement-based composites can be used in critical structural components to mitigate the seismic response and to improve the seismic performance of structures.
Influence of Silica Fume and Thermal Damage on Uniaxial Tension Performance of PVC-SHCC
Authors: Wu Rui Xue , Zhao Tie Jun , Tian Li , Ma Wan
Published: August 2013

As a new type of building materials, performance of SHCC admixed with silica fume and that exposed to different temperatures are of concern. Uniaxial tension test is conducted on specimens that with and without silica fume admixture, after being exposed to 6 different temperatures (20°C, 50°C, 100°C, 150°C, 200°C and 300°C) for 2 hours. The results show that the ultimate tensile strain of SHCC decreases along with the increase of temperature. However, the ultimate tensile strain remains above 1.2% when the temperature is less than 200°C. Incorporating silica fume into SHCC design indicates that the use of silica fume does not have much effect on the ultimate tensile strain of SHCC, but significantly improves the first cracking strength and ultimate strength of the material.
Study on Modification Mechanism of the Polymer Modified Cement Concrete
Authors: Xiong Jian Ping , Deng Jia Xi , Hao Wang , Qin Run Pu
Published: August 2013

The Modification mechanism of the Polymer Modified Cement Concrete was studied by the DTA,SEM and MIP with the confirmation of lab test results. The research indicated: the more dosage of the polymer, the less content of the Ca(OH)2 in the Cement hydrated product. The pore structure was improved evidently simultaneously. The polymer film tend to more complete and interweaved with Hydration products. Therefore the netted structure was formed and the flexiblity of concrete was increase greatly. Lab test results also proved it：when continued adding the polymer, the performance of concrete improved remarkably.
Study on Activated Sludge Microorganisms of Northern Winter Sewage Treatment Plant
Authors: Tian Xi , Ai Sheng Shu , Zuo Yan , Ren Qing Kai , Xie Zhong Yan
Published: August 2013

At the sewage temperatures of 7-15°C, it used biological video microscopy and scanning electron microscopy to detect activated sludge morphology, miniature animals and flora species in northern winter sewage treatment plant. The results showed that activated sludge had dense floc with sharp edge, and was bigger at the temperatures of 13 and 15°C than at the temperatures of 7, 9 and 11°C. When the autumn and winter seasons were alternate and the sewage temperature was instability, the edge of the floc was slightly fuzzy and there was a small amount of free bacteria in activated sludge floc. The study had also shown that the temperature was higher, the type of sludge miniature animal and flora species were richer.