裂纹扩展阻裂在边坡加固中的应用

摘要

Article by introducing the fracture damage mechanics crack propagation crack resistance theory, the slope before and after the prestressed anchor cable safety factor changes and changes in the sliding surface . ABAQUS software to create a two-dimensional slope model , by comparison, prestressing , an increase of the deformation energy of the surface to form a new crack surface and crack promote the process so that the crack is not easy to continue to develop , indicate that the prestressed anchor cable to prevent cracks carried out in the initial sliding surface effect is very signifcant .%　　文章通过介绍断裂损伤力学中裂纹扩展阻裂理论，分析边坡在施加预应力锚索前后，边坡的安全系数变化情况及滑动面变动。通过abaqus软件建立二维边坡模型，通过对比发现，预应力施加以后，增加了形成新裂纹表面的表面能和裂纹推进过程中的形变能，使得裂纹不易继续发展，表明预应力锚索阻止裂纹在初始滑动面的开展效果是十分显著的。