不同滑带滑坡位移场分布及桩位优化研究

Study on Landslide Pile Position with Different Slide Zone Based on Displacement Field Distribution

以实际滑坡为背景,对粉质粘土、含碎石土与软弱夹层3种滑带分析其位移场分布状况,进而应用变模量强度折减法分析3种滑带滑坡的最优设桩位置。结果表明:当滑带为粉质粘土和含碎石土时,滑坡位移场呈波浪状形式分布;当滑带为软弱夹层时,滑坡位移场呈层状形式分布;在滑坡体下部位移较大区域为最优设置桩位。

Taking the actual landslide as the background,this paper analyzes the displacement field distribution of three kinds of sliding zone(soft clay,gravel soil and weak intercalated layer),and then analyzes the optimal pile position of landslides with three different sliding zone by using the variable modulus strength reduction method.The results show that the displacement field of landslide is in a wavy form when the sliding zone is silty clay and gravel soil.When the sliding zone is weak intercalated layer,the displacement field of the landslide is distributed in the form of stratiform,and the larger displacement area in the lower part of the landslide body is the optimal setting position.