基于数值模拟的高边坡加固效果分析  

作　　者：白锦烽 

机构地区：[1]广东顺协工程勘察有限公司福建分公司,福建泉州362000

出　　处：《科技创新与应用》2024年第23期82-85,共4页Technology Innovation and Application

摘　　要：福州市某高边坡削坡后存在安全隐患问题,需要对其进行加固处理并验证加固方案的效果。在对该高边坡进行稳定性分析的基础上,选取一个代表性剖面构建边坡三维网格模型,采用有限差分法分析边坡加固前后在天然工况和暴雨工况下的塑性区和位移量。在天然工况和暴雨工况下,边坡加固后的塑性区面积相比加固前有明显的减少;天然工况下边坡加固前和加固后的最大位移量分别为29.6 mm和10.8 mm,暴雨工况下边坡加固前和加固后的最大位移量分别为54.9 mm和27.9 mm;坡面6个监测点加固后的位移量相比加固前的位移量均大幅下降。数值模拟结果表明,格构梁加锚杆的加固方案可有效抑制边坡变形,提升边坡整体稳定性。该研究对类似高边坡加固方案设计和验证具有一定参考价值。A high slope in Fuzhou City has a safety hazard problem after slope cutting,and it needs to be reinforced and the effect of the reinforcement program is verified.Based on the stability analysis of the high slope,a representative profile was selected to construct a 3D grid model of the slope,and the plastic zone and displacement of the slope before and after reinforcement were analyzed by the finite difference method under the natural working condition and rainstorm working condition.The maximum displacements were 29.6 mm and 10.8 mm before and after slope stabilization under natural conditions,and 54.9 mm and 27.9 mm before and after slope stabilization under heavy rainfall conditions;the displacements at the six monitoring points on the slope surface were all higher than the displacements before and after stabilization.The displacements of the six monitoring points on the slope surface after reinforcement were greatly reduced compared with the displacements before reinforcement.The numerical simulation results show that the reinforcement scheme of lattice beams plus anchors can effectively inhibit the deformation of the slope and improve the overall stability of the slope.This study has certain reference value for the design and verification of similar high slope reinforcement programs.

关 键 词：边坡稳定性 格构梁锚杆 有限差分法 坡体位移 塑性区 

分 类 号：U416.14[交通运输工程—道路与铁道工程]