Frontiers of Green Building, Materials and Civil Engineering

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Authors: Shi Jie Jiang, Li Yin Shen, Yi Peng, Li Zhou
Abstract: This paper identifies a set of critical assessment indicators (CAIs) that can evaluate the multifaceted benefits of rural infrastructure investment in China. Research data were collected from a questionnaire survey to three groups of experts including government officers, professionals and business practitioners who are working in China’s housing and urban-rural development sector. The Fuzzy Set theory is used for establishing the CAIs, which appreciates the fuzziness of data from the questionnaire survey and thus increases the adequacy in the selection of the CAIs. The CAIs can help the local governments to make better decisions in investing in rural infrastructure in China. These critical indicators can also be generalized to provide valuable references for the investigation of rural infrastructure investment in other developing countries.
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Authors: Yan Li, Jian Cheng Kang, Chao Liu
Abstract: Kuroshio influences hydrological-climate environment of East China Sea by exchanging heat and salinity. It has great influence on climate-environment in East China. Understanding of seasonal variability of salinity at Kuroshio in the East China Sea (ECS Kuroshio) can provide a scientific basis to reveal the climate-environment change in East China. In this paper, Using salinity database of World Ocean Atlas 2009(WOA09) issued by NOAA in 2010, the change of salinity distribution and the high-salt areas at ECS Kuroshio with seasons have been analyzed, the results show that: upper low-salinity water between 0~125m is obviously changing with seasons. From spring to winter, the horizontal stratification at upper low-salinity water first increases and then decreases, but the phenomenon of vertical mixing is opposite with the horizontal stratification. The horizontal stratification is the most obvious in summer, it forms 0.33/m of halocline strength above 10m; the vertical mixing is the strongest in winter, upper low-salinity water mixes with higher-salinity water in Okinawa trough, and salinity is homogenous in vertical above 250m. There are seasonal variations of depth and range of the high-salt areas in different segments along ECS Kuroshio, and there are three high salinity cores in the high-salt areas: two of the high salinity cores appear in the sea area east of Taiwan in autumn and winter, the third core appears in the sea area northwest of Miyako-jima in spring.
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Authors: Xue Ying Wang, Ya Jun Wu, Dong Xu
Abstract: Proceed with basic passive solar construction parts,analysis and state thermal storage,heating accumulation and consumption process of passive solar energy.Put forward several effective measures to strengthen thermal storage and heating accumulation and reduce thermal loss in the northeast area.Lay the foundation for the green house design in the north-east of China.
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Authors: De Wei Fang
Abstract: Solving the housing problem for urban low-income people is one of important issues of the housing policy and urban planning in China. Shanty towns which were left from old days are now the main housing source for low-income populations; therefore, shanty town reconstruction has been taken as a resolution for solving housing problems for low-income people. However, the current land policy, real estate development policy, urban planning laws and regulations are insufficient in solving the shanty town reconstruction difficulties and more likely become barriers of it. A number of indicators such as building density, per capita living space, land prices and floor area ratio are used to determine how successful the shanty town reconstruction being implemented. In this article, a flexible solution on political and regulatory basis for solving shanty town reconstruction difficulties will be proposed by systematically analyzing various economical and technical indicators.
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Authors: De Wei Fang
Abstract: Deep water coastline and ecological environment are natural resources that the development of port city will depend on. Driven by economy globalization, port city development is the inevitable choice to guarantee economic flow and promote sustainable development of trading. Especially in newly rising developing countries, the construction of port city and green city should be organically combined, and the ecological environment protection becomes the important work for construction of green port city. Meishan Island in Ningbo is just at the critical period for determing the long-term development orientation. Meishan Island is the only undeveloped area in Ningbo City, which has deep water coastline, land resources, ecological environment and cultural tourism resources. In early 2007, China Academy of Urban Planning and Design is appointed by Beilun District Government of Ningbo City to perform a demonstration of long-term development orientation for Meishan Island. The topic is “Investigation of Ningbo Meishan Island Development”. The development plan and ecological environment protection plan for deep water port city was investigated on the base of this project, and some references for investigation were provided on ecological environment protection plan for deep water port city. The natural geographical condition of Ningbo Meishan Island was introduced as well as its role in development of regional economy and society; performed factor analysis for ecological environment of Meishan Island. Considering the level of ecological protection plan, Meishan Island is divided into three areas by functions which are port city development zone, ecological buffer zone and ecological protection zone.
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Authors: Yun Xue, Guo Ming Dong, Hui Xia Wen
Abstract: China building energy-saving technology is in the early stages of the development with energy high consumption and low energy efficiency. It is especially important to control each link of the building energy-saving for energy conservation. In construction of the envelope structure exists Some prominent effects ,such as the compilation and implementation of the construction technology, the review of design alteration, the performance measurement of materials and components, and control of construction technical measures, we should be implemented related inspection and control in all stages of the implementation process.
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Authors: Li Ying Wang, Qiu Shi Hao
Abstract: In this thesis, it starts from the status of China's energy consumption and energy efficiency application, analysis our country’s existing architecture common problems and causes, combined with engineering practice, put forward the technological measures to the existing architecture energy-saving’s transformation.
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Authors: Kang Cai Nie, Bin Shi, Le Pan
Abstract: The concept of low-carbon city, low-carbon communities is increasingly well known, the relevant theory of low-carbon, low carbon planning studies have also appeared. The text starting from the concept and characteristic of low-carbon communities, based on the case of low-carbon community in Mianyang City, China science-technology, in terms of community, from planning perspective, has a practice attempt on content and strategy of low-carbon planning and design.
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Authors: Dan Zhang, Fa Hui Wang, Bo Lei, Yan Ping Yuan, Xiao Ling Cao
Abstract: By studying the features of vertical u-tube ground heat exchangers, with the consideration of the mutual interference between heat exchanger wells on heat transfer, this thesis puts forward the numerical model and calculation method for the heat exchange study of the well group, on the basis of analyzing heat exchange for single well. The paper adopts a nine-well model which is convenient and represents the general patterns of the heat exchange between well groups. The amount of the heat exchange between well groups can be calculated through testing the heat exchange of the single well by means of the heat exchange correction coefficient.
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Authors: Xiu Zhu Sun, Liao Wu
Abstract: The conventional design method of tall building is made the superstructure, foundation and subsoil to three separate forms and calculate independently. This method ignores the interaction of the three parts, which does not conform to the actual stress and deformation of projects. This article describes the mechanism of the interaction of the superstructure, foundation and subsoil, and analyses the effect of the superstructure stiffness changing to the interaction, which provides a theoretical basis for controlling the differential settlement of foundation reasonability and optimizing the structural design.
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