摘要
基于弹塑性力学理论,将锚索受力视为半空间体在边界受到法向集中力的作用,分析了预应力锚索锚固段的内力结构,结合布西涅斯克(Boussinesq)问题的位移解,推导出了锚固段剪应力与轴力分布函数,并提出了一种锚固长度的计算公式。在此基础上,分析了各种岩土参数变化对锚固段应力分布的影响,对之后锚固工程的设计具有一定的意义。
Based on the theory of elastoplastic mechanics,the force of the anchor cable is regarded as the half-space body being subjected to the normal concentration force at the boundary.The internal force structure of the anchorage section of the prestressed anchor cable is analyzed,and the displacement solution of the Boussinesq problem is combined.The shear stress and axial force distribution function of the anchorage segment are derived,and a calculation formula for the anchorage length is proposed.On this basis,the influence of various geotechnical parameters on the stress distribution of the anchorage section is analyzed,which has certain significance for the design of the anchoring engineering.
作者
高毅博
Gao Yibo(Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan 430074,China)
出处
《山西建筑》
2019年第9期58-60,共3页
Shanxi Architecture
关键词
锚固段
弹性理论
应力分布
位移解
anchoring section
elastic theory
distribution of stress
displacement solution
