Based On The Whole Life Cycle Of The Residential Building Green Degree Incremental Cost Analysis

In the global energy crisis, environmental pollution and ecological imbalance,the road of sustainable development has become the only way for us to save our living environment. The construction industry as a high energy consumption, high pollution emissions of the industry to sustainable development through the green degree improve the building of road is imperative. Although our country pay more attention to the research of green building, but mainly focused on the study of green building rating systems and green building technology, analysis of the study on the cost of green building is not a lot. However, the influence of the biggest obstacle to the development of green building is due to the increased degree of green buildings caused increased the cost of it, that the incremental cost.Residential building as an important part of China’s construction industry, its greenness directly affect the degree of green building level, the impact on our resources and the environment is very large. Therefore, this paper will focus on the analysis of the incremental cost of residential construction greenness,and from the perspective of the whole life cycle,to study the incremental cost of the residential building green degree.This topic through reviewing research literature at home and abroad about green building and green building cost. With the help of the theory of green degree of whole life cycle cost theory and the theory of green residential buildings,the residential building life cycle is divided into the decision design stage, construction stage and operation dimension support stage and scrap removal of four stages. The incremental cost of each stage is analyzed, and the incremental cost structure in the whole life cycle of the residential building is determined.In the clear basis of green residential building constructed on the incremental cost of using AHP importance of green residential building incremental cost components were sorted. Through the calculation of that in the whole life cycle of the constituent elements of residential green building incremental cost, energy saving and utilization, water saving and water resources utilization, the indoor environment and land and land resources using the four incremental cost elements in importance ranking of the top four, the remaining seven incremental cost factors important degree is lower than 0.1. Therefore, this project will be the focus on the analysis of the green degree incremental cost of residential building in order to sort the first four.Before the calculation of residential green building incremental cost, this topic first determine the incremental cost calculation principle, then the importance sequence was used in the incremental cost elements for the top four second level indicators of green energy technology are analyzed, and with reference to the relevant literature on green energy technologies to produce the incremental cost example calculation, to summarize these examples due to the use of green energy technology and incremental cost, finally will be converted to the same point in time to comprehensive analysis of these green energy technology generated incrementally into the. Through the analysis, it is found that the increase of the green degree of the residential building in the construction process will produce a certain incremental cost, but in the latter part of the cost of the operating process is less. So from the perspective of life cycle, the incremental cost of green residential building is not very high. Finally, the project through the concrete example analysis of the green degree of the increase in the cost of residential construction.