预应力锚杆锚固段剪应力分布规律研究  

Study on Shearing Stress Distribution of Anchored Section for Prestressed Anchor Bolts

作　　者：张爱英[1] 陈弦[2] 刘皓东[2] 

机构地区：[1]安康学院,陕西安康725000 [2]西安科技大学,西安710054

出　　处：《建筑科学》2009年第9期74-76,共3页Building Science

摘　　要：预应力锚杆广泛的应用于地下工程中,但是对于其作用机制的研究还存在许多问题。本文基于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,对预应力锚杆锚固段剪应力沿长度方向的分布规律进行理论研究,得到了剪应力沿锚杆锚固段轴向的分布曲线,为预应力锚杆设计提供理论依据。Prestressed rock bolts have been widely used in underground engineering, but there are many problems in the mechanism of the bolt. Based on the shearing slide model of the interface between anchorage and hole, with the load transfer method, a elasto-plastic space model was set up for the theoretical study on the shearing stress distribution law along the length direction. The features of the shearing stress distribution curves were calculated. Through a ease study, the validity of proposed method is verified by comparing the prediced resuks with existing data.

关 键 词：预应力锚杆 锚固段 剪应力 残余强度 

分 类 号：TU473[建筑科学—结构工程]