The Evaluation Research of Green Building in the Whole Life Cycle

With the rapid development of the global economy, environmental pollution is more serious than before, it’s necessary to develop energy conservation on the way of sustainable development. In our country, the construction industry’s energy consumption accounted for1/3of the society’s total energy consumption, and produce many construction waste each year. In order to build a low-carbon, green, healthy and civilized society, it’s necessary to develop green building. Recently, domestic and foreign research about green building mostly stays in the environmental technology level, and problems about economic benefits are few concerned, result in the gap between them. This article from the view of the green building in the whole life cycle, combine the economic analysis based on the cost-effectiveness with the evaluation of the green energy-saving technologies, and establish the comprehensive green building rating system.Firstly, we deepen the theory of green building, and compared to the traditional architecture on the part of the economics. Based on this, the theory of life cycle cost effective is introduced in it, so the cost-benefi is divided into incremental costs and incremental benefits.Secondly, build the whole life-cycle cost-benefit model of green building. The incremental cost is divided into six parts, energy, water,land, materials, indoor environmental quality, operations management. The incremental benefit is divided into economic, environmental and social benefits three parts, and take the monetization quantitative criteria to environmental benefits and social benefits. We build the economic evaluation of the whole life cycle of the green building system based on these, and choose the appropriate engineering economic evaluation parameters and indicators for analysis.Thirdly, establish the green building evaluation system in whole life cycle and introduce the cost-effectiveness which regarded as an economic evaluation into the comprehensive evaluation system of green building. We stratify the evaluation indexes, making the judgment matrix, empowering calculation by Analytic Hierarchy Process. With the gray systems theory, we divide green building into different rank judgment by gray clustering evaluation method. Finally, we put the cost-benefit model with whole life cycle assessment of green building projects into use. By calculating the incremental costs and incremental benefits.we make the judgment of the economic viability of the project, and evaluate the performance verification of the whole green building. At last,we draw the conclusion that this project meet the green building’s labeling results