基于双线性本构模型的锚杆界面剥离机理分析  

Analysis of the mechanism of bolt interface delamination based on the bi-linear constitutive model

作　　者：谈一评[1] 秦超超[1] 王宇谋 TAN Yiping QIN Chaochao WANG Yumou(Faculty of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China)

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《四川建筑科学研究》2017年第1期28-33,共6页Sichuan Building Science

基　　金：亚热带国家重点实验室资助项目(2013KB11)

摘　　要：基于内聚力理论的双线性本构模型,对锚杆与灌浆体界面的粘结滑移行为进行了理论分析,将锚杆拔出破坏过程分为4个阶段来描述,并在此基础上提出相应粘结剪应力、滑移量以及锚杆正应力的解析解,推导出抗拔承载力计算公式。通过拉拔试验的数据曲线规律验证了本文推导的正确性。Based on Cohesion theory of the bi-linear constitutive model,this paper analyzed theoretically the interface bond-slip behavior of bolt and grouting body, the failure process of the anchor pull out was divided into four stages. The corresponding interfaeial shear stress, slippage and the axial stress analytical solution, and the formula for the ultimate bearing capacity were presented. Finally, the theoretical derivation in this paper was verifiedby test data. Finally, the verification of test data illustrated the practicability of theoretical derivation.

关 键 词：双线性本构模型 锚杆 界面剥离 解析解 极限抗拔力 试验验证 

分 类 号：TU317[建筑科学—结构工程]