地震作用下抗滑桩—预应力锚索框架组合结构受力机制
摘要
A numerical model of a landslide stabilized with anti-slide piles and anchor cable frame beams was developed using a three-dimensional finite element program MIDAS/GTS.The factor of safety of the reinforced slope was calculated using the displacement time curve method.The acceleration responses, structural internal forces, and load-sharing rules were analyzed by inputting Wolong seismic waves with different peak ground accelerations(PGA).The results show that the factor of safety of the reinforced slope satisfies the code requirements.A potential shallow slip surface exists in the upper part of the slope, and a potential deep slip surface exists in the middle and lower parts of the slope under the earthquake action.The acceleration of the reinforced slope under seismic loading shows an elevation amplification effect.As the PGA of the input seismic wave increases, the amplification effect is enhanced.The bending moments and shear forces of the anti-slip pile increase when the PGA of the input 基金项目： 国家重点研发项目(No.2019YFC1509700).