桩板墙结构加固边坡作用效果数值分析

Numerical analysis of slope reinforcement effect of pile sheet wall structure

以某边坡加固治理项目为研究对象,采用数值模拟的方法分析了桩板墙+刚性反压支护加固方案的可行性,得到结论:采用桩板墙结合刚性反压支护方案时,边坡加固前最大位移为49.3 mm,加固后最大位移为21.9 mm,相比于加固前,加固后边坡最大位移减小了55.6%;边坡加固前后安全系数分别为1.06和1.51,相比于加固前,加固后边坡安全系数增大了42%;桩板墙+刚性反压支护加固可以有效提高边坡的整体稳定性,且采用强度折减法可以对边坡加固前后的安全稳定性进行计算。

Taking a slope reinforcement project as the research object,the feasibility of the pile sheet wall+rigid back pressure support reinforcement scheme is analyzed by numerical simulation.The following conclusions are obtained that when the pile sheet wall combined with rigid back pressure support scheme is adopted,the maximum displacement before slope reinforcement is 49.3 mm,and the maximum displacement after reinforcement is 21.9 mm.Compared with that before reinforcement,the maximum displacement after reinforcement is reduced by 55.6%.The safety factors of the slope before and after reinforcement are 1.06 and 1.51 respectively.Compared with that before reinforcement,the safety factor of the slope after reinforcement is increased by 42%.Pile sheet wall+rigid back pressure support reinforcement can effectively improve the overall stability of the slope,and the strength reduction method can be used to calculate the safety and stability of the slope before and after reinforcement.