基于模糊层次分析法的建筑抗震设计方案比选研究

Seismic Design Scheme Comparison Based on Fuzzy Analytic Hierarchy Process

论文以西南地区某医疗综合楼为研究案例,针对拟建场地勘察报告实际情况拟采取的两种结构抗震设计方案提出结构比选原则,建立了4个一级指标、12个二级指标的综合评价分析模型,基于层次分析法建立判断矩阵,得到各指标综合权重,并通过专家调查打分法确定各指标得分,采用逻辑运算确定因素隶属度,最终建立模糊综合评判模型,比选两种结构抗震设计方案。研究结果表明:基于模糊层次分析法进行抗震设计方案比选时,可将决策者对复杂对象的决策思维过程层次化和模型化,得到直观的评价结果,该模型计算得到两种抗震设计方案相对隶属度为 0.404 0,0.596 0,从而确定第二种方案最优,为实际工程建设提供了决策依据。

To select a medical complex building in southwest China as a research case,according to the actual situation of the proposed site investigation report,the principle of structural comparison was put forward,and a comprehensive evaluation and analysis model of 4 first grade indexes and 12 second grade indexes were established,a judgment matrix was established based on the analytic hierarchy method,the comprehensive weight of each index was obtained,and the score of each index was determined by the expert survey scoring method,and the degree of factor membership was determined by logical operation,and finally a fuzzy comprehensive evaluation model was established to compare the seismic design scheme of two structures.The results show that when comparing seismic design schemes based on fuzzy analytic hierarchy method,the decision-making thinking process of decision-makers on complex objects can be hierarchized and modeled,and intuitive evaluation results can be obtained,and the relative membership degree of the two seismic design schemes was calculated by the model to be 0.4040 and 0.5960,so as to determine the optimal second scheme and provide a decision-making basis for actual engineering construction.