| Construction industry is one of the world’s largest energy consumption industries, and a main emission source of carbon dioxide and many other greenhouse gases. Along,with environmental pollution,energy crisis and other global problems increasingly prominent.Developing the green building and realizing the sustainable development of construction field is imperative.Green building means that in the whole life cycle of construction, try to save resources, protect the environment,reduce pollution and reduce carbon emissions at the most extent, and harmonious coexistence with nature at the same time.In this paper, We choose high-rise shear wall structure as our research object, therefore, we are committed to the study on how to reduce carbon emissions and make building being more green and environmental protection, the main research content is as follows:1.The analysis and evaluation of green building science are based on the building carbon emissions,besides, created the basis data for calculating carbon emissions of construction,which are based on the theory of whole life cycle of building evaluation. And we concluded carbon emission factor of the main building materials in the concrete structure system,summarized the formula of structure of the carbon emissions, lay a foundation for quantitative evaluation about the green degree of structure system.2.This paper introduced the seismic calculation and the calculation method of internal force and displacement of the shear wall structure, moreover, the general principles of the shear wall seismic layout is given. At the same time,it introduced the concept of the high-rise shear wall structure optimization design. and we determined the basic opinion about the optimization design of high-rise shear wall structure of the green building on this foundation.3. We choosed one of xi ’an’s high-rise shear wall structure residential building as an example, and made the arrange, the quantity,and the thickness of the shear wall as the optimal design variables, and the calculation and analysis were operated by SATWE software modeling. We obtained that by optimizing the layout of shear wall,making a reduction in the number and the thickness of the shear wall can optimize structure seismic performance, at the same time reduced the carbon emissions of this structure system.4. Two optimization were carried out on the engineering examples, the preliminary optimization choosed the quantity and arrangements of shear wall as optimal design variables.While the second optimization choosed the thickness of shear wall and material strength of structure as the optimal design variables. The mechanical performance,seismic performance and stiffness of the optimized structure become more reasonable, the carbon emissions of thestructure system reduced significantly. By summarizing the mentality of this two optimization design, the optimization design of high-rise shear wall structure based on green building is obtained. It provide a reference for design personnel about the green structure’s design and structure optimization. |
