摘要
根据砂土液化问题具有的模糊性和不确定性,建立了一种判别砂土液化发生可能性的模糊综合评判模型。在提出的砂土液化模糊综合评判模型中,通过综合地震烈度、标贯击数、地下水位和平均粒径等影响砂土地震液化的因素,采用梯形隶属函数并分别给出各因素隶属函数的表达式。通过工程实例计算验证了该模型的可行性,计算过程简单明了,有一定的实用价值。
According to the fuzzy and uncertainty characteristics of soil liquefaction, a comprehensive fuzzy evaluation model of soil liquefaction is presented. In the comprehensive fuzzy evaluation model of soil liquefaction, the following factors, such as earthquake intensity, SPT counts, groundwater level and mean diameter of sand soil particle which affect the liquefaction of sand soil were considered, and the sketch map of trapezoid subordinate function was adopted and the subordinate function expression of each factor was given. The results show that the comprehensive fuzzy evaluation model of soil liquefaction is feasible and valuable.
出处
《重庆建筑大学学报》
EI
CSCD
北大核心
2006年第1期55-58,79,共5页
Journal of Chongqing Jianzhu University
基金
国家自然科学基金项目(50379046)
教育部博士点特别研究基金项目(A5022)
关键词
砂土地震液化
液化判别
综合评判
隶属函数
权值
seismic liquefaction of sands
liquefaction prediction
integrative evaluation
subordinate function
weighted values
