市政技术2025，Vol.43Issue(8)：77-86,10.DOI:10.19922/j.1009-7767.2025.08.077
基于随机过程和IE-UM的基坑风险评估
Risk Assessment of Foundation Pit Based on Stochastic Process and IE-UM
彭澍1
作者信息
- 1. 中铁十八局集团有限公司,天津 300222
- 折叠
摘要
Abstract
In order to enhance the scientific and accuracy of risk assessment in foundation pit,a risk assessment method integrating stochastic processes with the Information Entropy and Unascertained Measure(IE-UM)theory is proposed in this study.The approach employs a Gaussian stochastic process to simulate the variation characteristics of risk indicators and utilizes the entropy weight method to determine weights of each evaluation indicator to reduce the impact of subjectivity on the assessment.Taking the foundation pit project of Shisanchong Station along the Nan-sha-Zhuhai Intercity Railway,Guangzhou as an example,a comprehensive risk assessment index system encom-passing natural,design,and construction factors was established.The study employed Monte Carlo probabilistic modeling combined with cross-covariance signal analysis to systematically assess the effects of various risk factors.The results indicate that construction factors exert the greatest impact on overall risk and the overall is within the moderate to high-risk range.This study provides a feasible theoretical foundation and practical tools for risk identi-fication and safety management in similar deep and large excavation projects.关键词
基坑工程/随机过程/未确知测度/熵权法/风险评估Key words
foundation pit/stochastic process/unascertained measure/entropy weight method/risk assessment分类
建筑与水利引用本文复制引用
彭澍..基于随机过程和IE-UM的基坑风险评估[J].市政技术,2025,43(8):77-86,10.
