基于GEO5有限元模块的抗滑桩优化设计

Optimum design of anti-slide pile based on GEO5 finite element module

以库伦GEO5软件有限元模块为分析平台,在满足规范边坡安全稳定系数Fs=1.2时计算得出的剩余下滑力为一定值的条件下,建立同等条件下单排抗滑桩、双排有、无桩顶系梁抗滑桩三种有限元模型,对桩的侧向弯矩、剪力、位移进行对比分析。通过对比得出:双排带系梁抗滑桩前后排桩弯矩、剪力分布较均匀,桩头位移一致,能更好地发挥抗滑性能,且各项指标均比单排抗滑桩要低,节省造价,便于设计、施工。

Taking the finite element module of Kulun GEO5 software as the analysis platform,under the condition that the residual sliding force calculated when the safety and stability coefficient of the standard slope Fs=1.2 is a certain value,three finite element models of single row anti-slide pile,double row anti-slide pile and non-pile top beam are established under the same conditions,and the lateral bending moment,shear force and displacement of the pile are compared and analyzed.Through comparison,it is concluded that the distribution of bending moment and shear force of double row tie beam anti-slide pile is uniform,the displacement of pile head is the same,the anti-slide performance can be better brought into play,and all indexes are lower than that of single row anti-slide pile,which saves cost and is convenient for design and construction.