The Study On Quantitative Evaluation Of Green Construction

Nowadays, sustainable development has been placed on the main agenda in the world due to the threat of global warming. However, the construction industry still consumes a lot of resources and energy. The proportion of energy consumption during the construction stage has reached more than 20%, and it has a direct impact on the quality of urban environment. Therefore, the green construction has become an inevitable trend in construction engineering. It is particularly concerning that the current evaluation standard and system of green construction are mostly formulated on qualitative analyses, which are subjective and thus devoid of clarity, maneuverability and integrity. As a result, the development of green construction in China has lagged behind compared with the developed countries. How to establish quantitative evaluation toward green construction is an urgent issue at present.In this paper, the research focused on the quantification of indexes, such as water consumption, electricity consumption, noise and dust. Firstly, theoretical calculation methods of water and electricity consumption were summarized to get the theoretical values; meanwhile, the measurements with regard to conservation of water and electricity and protection of noise and dust pollution, which are used in practical construction project, were reviewed systematically. Secondly, a reasonable test plan was proposed to measure the total water and electricity consumption and crane’s electricity consumption of an engineering project under construction in Chongqing, then the practical values obtained from the test and the theoretical values were conducted comparative analysis. Finally, the current index system was revised and quantitative evaluations were established in accordance with practical values and quantitative indexes, in addition, the revised evaluation system was verified through an engineering project to confirm its rationality and feasibility. In this paper, the savings of material and fuel consumption of construction machinery were not surveyed which led to the incompletion of the quantitative evaluation system, so the two aspects should be further studied in the future.