基于FLAC^(3D)的深路堑开挖及防护分析

Excavation and Protection of Deep Cutting Based on FLAC^(3D)

深路堑边坡支挡是路基工程的一个重点内容。依托某新建铁路深路堑工程,借助数值计算软件FLAC^(3D)对边坡分级开挖和锚杆框架的加固方案进行了数值仿真计算,重点分析了边坡开挖前后应力应变及框架梁和锚杆的内力,可为深路堑边坡指导施工和优化设计提供参考依据。

Supporting structure of deep cutting slope is a key part of subgrade engineering. The research relied on deep cutting engineering of a newly-buih railway, the step braced excavation of slope and the reinforcement scheme of anchor bolt frame were simulated by means of the numerical calculation software, FLAC3D. This paper emphatically analyzed the stress and strain status before and after slope excavation and the internal force of frame beams and anchors, it could provide a ref- erence for guiding construction and improving design of deep cutting slope.