悬臂式基坑支护结构嵌固深度的模糊概率分析  

FUZZY PROBABILITY ANALYSIS OF THE EMBEDDED DEPTH OF CANTILEVER BRACING STRUCTURE FOR EXCAVATION

作　　者：廖瑛[1] 伍凯[1] 

机构地区：[1]苏州科技学院土木工程学院,江苏苏州215011

出　　处：《工业建筑》2012年第2期82-86,共5页Industrial Construction

摘　　要：鉴于足够的嵌固深度对于保证悬臂式基坑支护结构的稳定至关重要,而基坑稳定性问题又是一个模糊随机事件,其中兼有随机性特点和模糊性特点,故而基于模糊概率理论研究了嵌固深度的优化分析方法,实例的计算结果表明:随着嵌固深度的加大,基坑发生失稳破坏的模糊概率减小,从而为达到基坑安全性及经济性的双重目标,确定合理的支护结构嵌固深度提供了理论依据。In view of the adequate embedded depth is very important to cantilever bracing structure for excavation, and the stability problem of excavation is a fuzzy-random event which includes random and fuzzy failure characteristics, the optimization analysis for embedded depth was studied based on the fuzzy probability theory. The example＇s results indicated that the fuzzy failure probability would decrease with the increasing of the embedded depth, and therefore, the embedded depth of cantilever bracing structure for excavation could be determined rationally, which satisfied the safety and economical requests.

关 键 词：悬臂式支护结构 嵌固深度 模糊概率 优化 

分 类 号：TU753[建筑科学—建筑技术科学]