基于状态函数的抗滑桩嵌固深度可靠度分析  

Reliability analysis of embedded depth for anti-slide pile based on state functions

作　　者：刘树林[1,2] 强菲[3] 刘朋飞 LIU Shulin QIANG Fei LIU Pengfei(CCCC First Highway Consultants Co. ,Ltd. , Xi＇ an, Shaanxi 710075, China Xi＇ an China High- Way Geotechnical Engineering Co. , LTD, Xi＇ an, Shaanxi 710075, China College of Geology Engineering and Geomatic,Chang＇an University, Xi＇an, Shaanxi 710054,China Chongqing Survey,Design and Research Institute Co. , Ltd. of CREEG, Chongqing 400023, China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710075 [2]西安中交公路岩土工程有限责任公司,陕西西安710075 [3]长安大学地质工程与测绘学院,陕西西安710054 [4]中铁二院重庆勘察设计研究院有限责任公司,重庆400023

出　　处：《中国地质灾害与防治学报》2016年第3期60-65,共6页The Chinese Journal of Geological Hazard and Control

摘　　要：本文采用可靠度指标法确定抗滑桩嵌固深度,分别建立基于规范和摩尔-库仑强度准则的状态函数,用蒙特卡洛法计算可靠指标。结果表明:两种状态函数的可靠指标对嵌固段岩土体内摩擦角的敏感性均最高,粘聚力次之;基于摩尔-库仑强度准则的状态函数的可靠指标普遍大于基于规范推荐的状态函数的可靠指标;可靠指标随嵌固深度的增加逐渐增大并趋于定值。This paper uses reliable indicator method to determine the embedded depth of anti-slide pile. Two state functions are established based on specification and Mohr-Coulomb strength criterion respectively. MonteCarlo method is used to compute reliable indicators. The results show that： the reliable indicators of the both two state functions have the highest sensitivities to the friction angle of rock mass in embedding body,following by cohesion. The reliable indicators of the state function based on Mohr-Coulomb strength criterion are generally greater than the ones based on specification. The reliable indicators increase with the embedded depth and achieve stability gradually.

关 键 词：抗滑桩 可靠度 蒙特卡洛法 嵌固深度 状态函数 

分 类 号：P642.22[天文地球—工程地质学] X45[天文地球—地质矿产勘探]