岩溶地层地铁车站基坑长锚索锚固力计算方法研究  

Research on the Calculation Method of Anchoring Force of Long Anchor Cable in the Foundation Pit of Subway Stations in Karst Strata

作　　者：叶承敏 YE Chengmin(Hunan Vocational College of Railway Technology,Zhuzhou 412006,Hunan,China)

机构地区：[1]湖南铁路科技职业技术学院,湖南株洲412006

出　　处：《工程技术研究》2023年第16期18-20,共3页Engineering and Technological Research

基　　金：湖南铁路科技职业技术学院2022年度课题(HNTKYKT-2022-4)。

摘　　要：岩溶地层溶洞必然影响基坑长锚索的锚固力,进而影响基坑的稳定性。文章基于弹性阶段线性函数建立锚固体与孔壁界面的剪切滑移本构模型,采用荷载传递函数法考虑了溶洞与非溶洞分界处的变形协调关系,提出了岩溶地层车站基坑长锚索锚固力的计算方法,进而分析了岩溶地层长锚索锚固力的影响因素及规律,以供参考。Karst caves in karst strata will inevitably affect the anchoring force of long anchor cable in the foundation pit,and then affect the stability of the foundation pit.Based on the linear function of elastic stage,the shear slip constitutive model of the interface between anchorage body and hole wall is established.The load transfer function method is used to consider the deformation coordination relationship at the boundary between karst and non-karst caves.The calculation method of anchoring force of long anchor cable in the foundation pit of stations in karst strata is put forward,and then the influencing factors and laws of anchoring force of long anchor cable in karst strata are analyzed for reference.

关 键 词：地铁 锚索 锚固力 岩溶地层 剪应力分布 

分 类 号：U655.54[交通运输工程—港口、海岸及近海工程] TU458.3[交通运输工程—船舶与海洋工程]