基于改进证据理论的深基坑施工风险评价  

Risk Assessment of Deep Foundation Pit Construction Based on Improved Evidence Theory

作　　者：李杨 徐建泽 LI Yang;XU Jian-ze(College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210

出　　处：《华北理工大学学报（自然科学版）》2022年第2期68-73,共6页Journal of North China University of Science and Technology：Natural Science Edition

基　　金：河北省教育厅科技项目"铁尾矿砂混凝土梁抗火性能研究"(项目编号ZD2021085)。

摘　　要：鉴于深基坑施工风险具有不确定性,针对不确定性风险指标进行有效融合是风险评价的难点。通过K-L信息距离对评价指标中的高度冲突进行识别并隔离,采用证据理论对深基坑施工风险不确定性指标进行融合。研究结果表明,改进证据理论的评价方法可提高融合结果的收敛度,并可为深基坑施工风险评价提供依据。In view of the uncertainty of deep foundation pit construction risk,it is difficult to integrate the uncertainty risk indicators effectively.The K-L information distance was used to identify and isolate the high conflicts in the evaluation indexes,and the evidence theory was used to fuse the risk and uncertainty indexes of deep foundation pit construction.The results show that the improved evaluation method of theory can improve the convergence degree of fusion results,and provide a basis for the risk evaluation of deep foundation pit construction.

关 键 词：深基坑 证据理论 K-L距离 施工风险 

分 类 号：TU753[建筑科学—建筑技术科学]