基坑工程的整体稳定可靠度及模糊可靠度分析

Analysis of Overall Stable Reliability and Fuzzy Reliability of Foundation Pit Engineering

基坑支护结构是土木工程施工重要的环节,现在大多数采用安全系数法来评估其稳定性,但由于在施工过程中有许多不确定性因素的存在,单独考虑安全系数法已不能满足实际工程的需要。为此,在安全系数法的基础上,结合可靠度和模糊数学的知识,利用MATLAB编程对土钉墙的整体稳定性进行综合评估。对比计算结果可知,模糊可靠度理论能更加准确地反映岩土体结构的稳定性。

The supporting structure of foundation pit is an important part of civil engineering construction.Presently,most of them use the safety factor method to evaluate its stability.However,due to the existence of many uncertain factors in the construction process,the safety factor method alone cannot meet the requirements.Therefore,based on the safety factor method,combined with the knowledge of reliability and fuzzy mathematics,MATLAB programming is used to comprehensively evaluate the overall stability of the soil nail wall.Comparing the calculation results,the fuzzy reliability theory can more accurately reflect the stability of rock and soil structure.