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With rapidly-developed economy in 21st century, people have paid more and more attention to the energy problem. Saving energy and protecting environment have been the basic policies of our nation. Building-Energy-Saving is an important area of energy-saving. And urban residential buildings’energy-consumption is the main component of buildings’total energy-consumption. Massive power has been consumed for heating in winter and cooling in summer. Under the energy-saving system of 65%, comparing to other parts, doors and windows are the weaker ones of energy-saving. As an effective measure of energy-saving, Building-sunshade plays an enormous role in urban residential buildings’energy-consumption in Yangtze River Basin area. Therefore, improving the investigation of the building sunshade design has become the top priority of architects.This paper is based on Yangtze River Basin which is relative familiar, with the purpose of providing building sunshade theories and references more accurately and intuitively to those arthitects, trying to sum up the improvement measures and suitable forms of building sunshade in Yangtze River Basin, as well as promoting the popular usage of sunshade technology. After referring to large amount of literatures concerning building-sunshade technology, based on understanding of history and current situation of sunshade theory, using the methods of investigating, simulating, quantitative analysis and qualitative analysis, and according to the technical route of“raise question– recognize question– analyze question– solve problem”to conduct the research.This paper is firstly based on the understanding of the general situation of sunshade of residential of Yangtze River Basin and the study on the sunshade at home and abroad, indicating that sunshade measures of residential of Yangtze River Basin are not effective and applicable, as well as inconsistent with the development of energy-saving. People need to make a detailed investigation to find out the causes of restricting the development of energy saving. After the thorough analysis of the characteristics of climate and sunshine of Yangtze River Basin, the investigation factors of residential sunshade, as well as selection criteria of measure-selected of sunshade of Yangtze River Basin, making a sufficient preparation of in situ investigation, which will greatly improve the relevance and effectiveness of the research. To targeted resolve the factors of blocking adumbral application, through taking photos and interviewing residents, design institute and government for four typical cities: Chongqing , Wuhan , Nanjing , Shanghai, we obtain lots of truly and reliable first-hand research data, according to the statistical data, at last found the reason why it is difficult to popularize the adumbral application for residential building in Yangtze river basin, which is that the action is not worth to be supported , the form does not satisfy requirement. Combined with the shading experience of architecture from developed countries, this paper proposes five measures for modification, including the improvement of policies, the systematism of design, the enrichment of materials, the diversification of routes and the innovation of structures. Based on the adaptable rules including adapting climate--both covering and penetrating, adapting aesthetics--stressing modeling, adapting difference--selecting materials neatly, adapting functions--making lighting, venting and sight compatible, this paper summarizes the specific forms of shading for architectures in Yangtze River basin including sheeting sunshade,lattice sunshade, plant sunshade, awning, |roll sunshade, shutters sunshade. In the end, by analyzing instances of building-sunshade designs, it provides proofs for the improvements and adaptation principles that paper proposed.
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