Research On Method Of Green Building Assessment Based On Fuzzy Sets

High energy consumption of construction, high pollution and high demands to live environment has become important contradiction. So it is one important way to develop green building to solve this contradiction. The evaluation system of green building is an important yardstick to measure a level of green development in a country. A set of green building evaluation system that fits our national condition is of great significance to the rapid development of green building.The author analyze the "green building evaluation standard","assessment of the green Olympics" and so on, The results show that the current domestic evaluation methods is the disadvantages of science and objectivity. In order to overcome this shortage, this paper introduces the theory of fuzzy comprehensive evaluation, and established a new green building evaluation method based on fuzzy sets.First of all, the author through the in-depth study of the green building evaluation system at home and abroad, combining with the relevant standards of shandong local,establishing the evaluation index system of green building level, the index system includes:8level indicators,25secondary index,65tertiary indicators. The system breaks through general items and preferences items of the traditional evaluation, effective project certification can avoid an unqualified, Make evaluation more scientific and more objective.Then, in view of the green building design stage, the author used questionnaire method to investigate relative importance of the index system, Survey content includes five indicators,17secondary indexes,41three-level index; Investigation involves more than a dozen big small and medium-sized design institute.a total of eight professional include:Covers hvac, architecture, water supply and drainage, electrical automation, construction engineering management, city garden, gauge. Combined with the analytic hierarchy process (AHP), to determine the weight coefficient of each index.After that, The authors apply fuzzy mathematics theory, Combining with the evaluation index system of green building; The evaluation factor set is determined; By the expert scoring method to establish fuzzy evaluation matrix; To create a green building assessment model for primary, secondary and tertiary fuzzy sets. Based on the theory of fuzzy evaluation model, the author used Visual Basic software development technology, the research and development of the green building evaluation calculation software, The software features include:rationality fuzzy matrix computing functions, data checking and star certification level judgment function.Finally, the author has carried on the empirical analysis by green buildings three-stage fuzzy evaluation model of shandong bookstore. Review project data, determining the project have star certification prize; According to the projec of expert grade provide data and establish the fuzzy evaluation matrix, Application of green building fuzzy evaluation model, to complete the project level3index fuzzy vector calculation, according to the membership degree of the vector, determine project the trend of the green level. Score vector is established and the project to carry on the quantification, total score by the set of grades to determine project certification level. Application of the mathematical model, can directly determine an index of the extent of the green building design, design for designers to provide clear goals.