基于逼近算法的结构共振震害定量风险分析  

Quantitative risk analysis of structure resonance disaster during earthquake based on approximation algorithm

作　　者：谭振东 王广东 张宇[2] 李建平[3] 

机构地区：[1]总后军事交通运输研究所,天津300161 [2]军事交通学院基础部,天津300161 [3]天津大学建工学院,天津300072

出　　处：《辽宁工程技术大学学报（自然科学版）》2007年第5期697-699,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：天津市自然科学基金资助项目(07JCYBJC13100)

摘　　要：从风险发生概率和损失程度两个方面对结构共振震害风险进行了定量分析。利用岩土的剪切波速求得场地的地震动卓越周期,考虑随机因素的影响和结构共振区间的模糊性,并基于逼近算法提出了共振震害风险模糊概率计算方法。初步建立了共振震害风险损失程度综合评估模型,对事故损失做出全面地、系统地、客观地评价。以某一桥梁结构为例进行分析,结果表明该定量分析方法是可行且有效的。Quantitative analysis is carried out on resonance disaster risk for risk probability and comprehensive loss. The predominant period of ground is measured by shear wave speed. The calculating method is proposed for risk fuzzy probability of structure resonance disaster based on the approximation algorithm, considering the effect of stochastic factors and the fuzzification of resonance interval. And the model is established preliminarily for comprehensive loss assessment on resonance risk to evaluate risk loss more impersonally and accurately. The application of this quantitative method to a bridge structure shows that it is feasible and effective.

关 键 词：结构共振震害 定量风险分析 逼近算法 损失程度综合评估 

分 类 号：P315.9[天文地球—地震学]