Research On Economic Evaluation Of Green Building Technology Based On AHP-entropy

With the rapid development of contemporary social economy,the energy shortage brought about by the shortage of resources and environmental pollution problems have become increasingly prominent,and seriously affect the survival and development of mankind.How effective energysaving emission reduction,environmental protection,causing widespread concern.According to statistics,the global construction industry's energy consumption accounts for about 30-40% of the total global energy consumption,is the global energy consumption and greenhouse gas emissions an important part of the field.In the context of the shortage of per capita resources in China,in the process of urbanization,the construction industry ushered in the development of the same time,building energy consumption and carbon emissions will continue to grow substantially,the construction area to take an energy-saving emission reduction.The road to sustainable development that protects the ecological environment is imminent.Over the past decade,the green building with low consumption,low pollution "green label" into the people's vision,the construction industry as the energy consumption of the "giant" industry should be duty-bound to respond positively to China's sustainable development strategy-the development of green building The Although the government's active advocacy,green building ushered in a good development prospects,but the green building relative to the traditional general building in terms of the initial investment more,the benefits of green building in the short term can not be seen,investors only See the immediate increase in investment costs,and can not see the benefits of the future green building,promote the enthusiasm of green buildings have been seriously affected,hindering the rapid development of green building in China.The reason is mainly due to the late development of green building in China,at this stage many green building technology is not mature enough,the choice of green building technology to increase the cost of additional costs,therefore,need to develop a set of green technology The combination of the program to choose a more economical green technology program evaluation methods.In this paper,according to the current level of green building development in China,combined with relevant information,summed up the classification of green technology,and through the collection of 18 have been green building related information,detailed analysis of the construction side of the green building technology selection Tendencies and the application of green technology,in order to know about that at this stage of the green technology maturity and popularity in China.And then from the perspective of the whole life cycle,the analysis of the use of green building technology to generate incremental costs and incremental economic benefits,the analysis of the green technology incremental costs and incremental benefits of the formula,combined with the relevant informatio,Analysis of incremental cost data of 1,2,3 star green building project.On the basis of the previous text,select the evaluation index,use the Ahp and Entropy method to determine the weight,the establishment of green building technology cost and benefit evaluation model.Finally,taking a star green building project in Nanchang City of Jiangxi Province as an example,this paper analyzes the green building technology used in the project,calculates the incremental cost and incremental economic benefit of the key of green technology,and uses the established evaluation model to give the evaluation score out of the final evaluation results,This paper provides a scientific and rational reference for the economic evaluation of green building technology,which provides some theoretical value for the government to further improve the green building star evaluation standard.To help the market and decision makers to choose the green building technology The theoretical basis for the elimination of China's green building constraints,to stimulate the enthusiasm of the participants on the green building,and promote the rapid development of China's green building has important practical significance.