基于局部变形假定的锚固类结构锚固段剪应力分布研究  

Study on the Shear Stress Distribution of Internal Anchorage Section of Anchorage Type Structures Based on Local Deformation Assumption

作　　者：范俊奇 孔福利 石晓燕 贺永胜 FAN Junqi;KONG Fuli;SHI Xiaoyan;HE Yongsheng(Institute of Defense Engineering,AMS,PLA,Luoyang 471023,China)

机构地区：[1]军事科学院国防工程研究院,洛阳471023

出　　处：《结构工程师》2021年第4期33-39,共7页Structural Engineers

摘　　要：根据模型试验所得锚杆体轴应变试验结果,在局部变形假定的基础上,通过简化假设,推导了全长粘结锚杆锚固段受力的理论解和锚杆体轴力和第一、第二界面剪应力分布解析公式。研究分析了不同强度类型介质中锚固类结构内锚固段应力、轴力及交界面的剪应力传递、衰减规律,探讨了介质强度对锚固段剪应力的影响,并将其与模型试验结果进行了对比分析。结果表明:解析解与试验结果基本吻合。本文分析了以锚杆为代表的锚固类结构第一、第二界面剪应力分布,对工程实践具有指导参考价值。Based on the assumption of local deformation,the analytic solution and the axial force formula of the anchoring section and the stress distribution formula at the first and second interfaces of the full-length injected bolt(FIB)are deduced.In this paper,stress,axial force and shear stress of anchor structure in different strength medium are analyzed,the influence factors such as medium strength on the shear stress of the internal anchorage section are discussed,and then compared with the model test results.It indicates that the analytical solutions are basically consistent with the experimental results.The results of this paper provided the shear stress distribution of the first and second interfaces of anchoring structure,which has guiding reference value for engineering practice.

关 键 词：局部变形假定 锚固类结构 全长粘结锚杆 内锚固段 剪应力分布 

分 类 号：TU476[建筑科学—结构工程]