预应力锚杆承载力特性的数值模拟分析  

Numerical Simulation Analysis on Bearing Capacity Characteristics of Prestressed Anchor

作　　者：曹驰 于沭[2] 邓刚[2] 刘垒雷 陈锐[3] CAO Chi1, YU Shu2 , DENG Gang2 , LIU Leilei3 , CHEN Rui3(1. China Resources （Shenzhen） Co. , Ltd. , Shenzhen 518055, Guangdong, China; 2. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, China; 3. Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, Guangdong, China)

机构地区：[1]华润(深圳)有限公司,广东深圳518055 [2]中国水利水电科学研究院流域水循环与模拟国家重点实验室,北京100048 [3]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《路基工程》2018年第3期31-35,共5页Subgrade Engineering

基　　金：国家重点基础研究发展计划暨973计划课题(2013CB036402);深圳市科技计划项目(JCYJ20150513155231754)

摘　　要：基于某深基坑工程现场锚杆抗拔试验,运用有限元分析软件ABAQUS,建立了嵌固模型和摩擦模型的预应力锚杆抗拔试验模型,对这两种模型锚杆的承载特性以及荷载传递机理,以现场实测数据进行对比分析,进一步论证了锚杆数值模拟分析采用摩擦模型的可靠性。同时,还分析了摩擦系数与预应力对锚杆的承载特性的影响。Based on the site anchor pull-out test of a deep foundation pit project,numerical simulation on pull-out test of anchor was carried out by using the finite element analysis software ABAQUS. Embedded model and friction model were used to analyze the bearing capacities of anchor and load transmission mechanism and compare with the site actual measured data. The results show that the friction model is more reasonable for numerical simulation analysis of anchor. In addition,the influence of friction coefficient and prestress on the bearing capacities and of anchor was analyzed.

关 键 词：深基坑 锚杆支护 嵌固模型 摩擦模型 对比 预应力 摩擦系数 

分 类 号：TU463[建筑科学—结构工程]