首页|基于FTA与AHP组合权重的基坑灾害链评价

基于FTA与AHP组合权重的基坑灾害链评价

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基坑一旦发生破坏,会引发一系列的连锁破坏,后果严重.运用事故树分析中基本事件的结构重要度来构造层次分析法中的判断矩阵,确定组合权重,进一步将权重与灾害链中节点度联合,获得基坑发生连续破坏每一条灾害链的风险值.结果表明基坑连续破坏主要风险链为外来水渗入深度—围护结构破坏、围护结构变形量—围护结构破坏、外来水渗入深度—涌水涌砂3条链,在施工过程中要注意这方面.
EVALUATION OF EXCAVATION DISASTER CHAINS BASED ON FTA AND AHP COMBINED WEIGHTS
Once a foundation pit fails,it can trigger a series of cascading failures with severe consequences.This study applies fault tree analysis to determine the structural importance of basic events and constructs a judgment ma-trix within the Analytic Hierarchy Process(AHP)to determine the combined weights.These weights are then inte-grated with node degrees in the disaster chain to obtain the risk values for each disaster chain associated with contin-uous failure of the foundation pit.The results indicate that the main risk chains for continuous failure of the founda-tion pit are the support structure damage from infiltrating water,the support structure damage from the support struc-ture deformation,and water and sand gushing from infiltrating water.Attention should be given to these aspects dur-ing the construction process.

continuous destruction of foundation pitfault treeanalytic hierarchy processdisaster chainrisk as-sessment

张凯文、袁长丰、李建伟、吕如强、李振

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青岛理工大学土木工程学院,山东青岛 266525

青岛第一市政工程有限公司,山东青岛 266000

基坑连续破坏 事故树 层次分析法 灾害链 风险评价

2024

低温建筑技术
黑龙江省寒地建筑科学研究院

低温建筑技术

影响因子:0.237
ISSN:1001-6864
年,卷(期):2024.46(9)