摘要
文章利用模糊综合评判法,基于现场监测数据,对某地铁基坑工程发生地下连续墙渗漏事故时和采取有效抢险措施后的情况进行风险等级评估;将基坑工程风险评估因素分为4层,基坑风险等级分为5级,利用隶属函数及层次分析法得出的权重集,综合评估基坑风险状态。结果表明:该基坑发生渗漏时基坑风险等级为Ⅴ级紧急状态;对基坑采取有效应急抢险措施后,基坑风险等级降至Ⅰ级安全状态。该实例应用结果表明,该方法评估基坑风险具有直观、动态、可靠的特点。
Based on the field monitoring data,the fuzzy comprehensive evaluation method is used to evaluate the risk levels of diaphragm wall leakage problems during the excavation of a subway station before and after taking effective emergency measures,respectively.The risk assessment factors of the excavation are divided into four levels,and the risk level of the excavation is divided into five levels.The risk level of the excavation is comprehensively assessed based on the weight set,which is obtained by using the membership function and analytic hierarchy process(AHP).The results show that when the wall leakage took place during excavation,the risk level of the project was at V-level emergency state.Once effective emergency measures were taken,the risk level could be reduced toⅠ-level safety state.This case demonstrates that the proposed method is intuitive,dynamic and reliable.
作者
李卫华
张生杰
洪小星
栾金龙
谭勇
LI Weihua;ZHANG Shengjie;HONG Xiaoxing;LUAN Jinlong;TAN Yong(Nantong Urban Rail Transit Co., Ltd., Nantong 226000, China;School of Civil Engineering, Tongji University, Shanghai 200092, China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2022年第1期60-66,共7页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(41877286)。
关键词
基坑风险评估
监测数据
模糊综合评判
基坑渗漏
excavation risk assessment
monitoring data
fuzzy comprehensive evaluation
leakage during excavation
