岩溶地区桥梁地基稳定性评价方法  

Evaluation Method of Bridge Foundation Stability in Karst Areas

作　　者：郝大为 吴亚超 刘华江 崔瀛 唐建明 Hao Dawei;Wu Yachao;Liu Huajiang;Cui Ying;Tang Jianming(Engineering Design and Research Institute of CCCC Third Highway Engineering Co.,Ltd.,Beijing 101304,China)

机构地区：[1]中交第三公路工程局工程设计研究院,北京101304

出　　处：《市政技术》2023年第5期96-101,共6页Journal of Municipal Technology

摘　　要：岩溶塌陷是岩溶地基失稳的主要表现形式,其发生的时间和空间很难预测。如果由于岩溶塌陷发生导致桥梁地基失稳,将影响桥梁安全并造成严重危害。因此,通过对岩溶地区桥梁地基失稳因素进行分析,筛选出12个评价因子进行分级、赋值,运用层级分析法建立了岩溶地区桥梁地基稳定性的评价数学表达式,并经过工程实例检验得到了评价结果。该研究方法可为岩溶地区桥梁的规划、建设提供参考。Karst collapse is the main form of karst foundation instability and is difficult to predict its occurrence time and space.The karst collapse will cause the bridge foundation instable which will affect the safety of the bridge and cause serious harm.In this paper,through the analysis of the factors of bridge foundation instability,12 evaluation factors were selected to classify and assign.The evaluation mathematical expression was established by analytical hierarchy process(AHP).The evaluation results were obtained by engineering examples.The research method can provide reference for the planning and construction of bridges in karst areas.

关 键 词：岩溶塌陷 桥梁地基 稳定性 层次分析法 

分 类 号：U445.4[建筑科学—桥梁与隧道工程] P642.25[交通运输工程—道路与铁道工程]