力法计算锚索抗滑桩内力分担比及其应用  

Application of the structural mechanics method to calculate the internal force sharing ratio of anchor cable and anti-slide pile for retaining structure

作　　者：石洋海 王贤能 Yanghai SHI;Xianneng WANG(Shenzhen Geokey Group Co.Ltd.,Shenzhen,Guangdong 518026,China)

机构地区：[1]深圳市工勘岩土集团有限公司,广东深圳518026

出　　处：《中国地质灾害与防治学报》2022年第4期92-97,共6页The Chinese Journal of Geological Hazard and Control

摘　　要：锚索抗滑桩为常用的滑坡治理支护结构,抗滑桩锚固于滑动面以下岩土体中,锚索可视为多余约束,因此锚索抗滑桩为多次超静定结构。结构力学力法作为求解超静定结构的基本方法之一,以锚索拉力为基本未知量,综合考虑平衡条件、变形条件、物理条件求解锚索轴力,从而进一步确定锚索与抗滑桩各自分担的滑坡推力比例。文中以具体滑坡工程实例,采用力法求解锚索、抗滑桩结构内力,并建议锚索与抗滑桩的荷载分担比初步可按照30%~40%估算。The anchor cable anti-slip pile is a generally-used retaining structure for landslide control.The anchor cable is anchored in the rock mass below the sliding surface,so the anchor cable can be regarded as redundant constraint.Therefore,the anchor cable anti-slide pile are multiple statically indeterminate structures.As one of the basic methods for solving statically indeterminate structures,the structural mechanics force method takes anchor cable tension as the basic unknown quantity,through considering the balance condition,deformation condition and physical condition,the axial force of anchor cable was solved,and then the proportion of landslide thrust shared by anchor cable and anti-slide pile was further determined.In this paper,the structural mechanics method is used to solve the internal force of anchor cable and anti-slide pile,and it is suggested that the load sharing ratio between anchor cable and anti-slide pile can be estimated according to 30%~40%.

关 键 词：锚索 抗滑桩 荷载分担比 力法 不平衡推力法 剩余下滑力 

分 类 号：P642.22[天文地球—工程地质学]