在地震作用下碎石土滑坡抗滑桩的抗震加固作用机理研究

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英文篇名：Study on Earthquake Resistance Reinforcement of Debris Landslide Anti-slide Piles under Earthquake Load 中文刊名：工业安全与环保 英文刊名：Industrial Safety and Environmental Protection 作者：孙峰 ; 孔纪名 ; 蔡强 ; 阿发友 ; 崔云 英文作者：SUN Feng1 ; 2 KONG Jiming1 CAI Qiang1 ; 2 A Fayou1 ; 2 CUI Yun1 ; 2(1.Institute of Mountain Hazards and Environment ; Chinese Academy of Science/ Key Laboratory of Mountain Hazardsand Surface Process ; Chinese Academy of Science Chengdu 610041) 中文关键词：地震荷载 ; 碎石土滑坡 ; 抗滑桩 ; 抗震加固 英文关键词：earthquake load debris landslide anti-slide pile earthquake resistance reinforcement 出版日期：2012-08-10 机构：中国科学院水利部成都山地灾害与环境研究所/中国科学院山地灾害与地表过程重点实验室;中国科学院研究生院; 年：2012 期：08 出版单位：工业安全与环保

摘要

本文利用弹塑性动力固结大变形有限元模型,采用非线性分析的方法对比研究在地震荷载作用下的碎石土滑坡的抗滑桩在坡脚和边坡中部的抗震加固效果。研究结果表明:设置在边坡中部的抗滑桩相对于设置在边坡下部的抗滑桩对整体边坡土体位移支挡最有效。不同高程点动弯距的变化趋势基本相同。在同样条件下中桩位抗滑桩的静力、动力弯矩大于桩位在坡脚的抗滑桩相应位置的弯矩,表明中桩位加固位置可以更有效发挥抗滑桩的抗弯承载能力。从提高边坡稳定性和抗滑桩的抗滑效果来看,边坡中部的抗滑桩抗震加固效果较好。
Based on the elastoplastic power solidifying distortion finite element model and by using non-linear numerical approach,the earthquake resistance reinforcement effects of anti-slide piles of debris landslide in the middle and toe positions under earthquake load are studied and compared in this paper.The results show that The middle piles compare to the toe position in the mask of the overall side slope is most effective,the different elevational point of the dynamic moment in the change tendency is the same.The different behavior of the bending moment distribution of piles were discussed in different piles' position in slope.It indicated that the excess dynamic moments of the middle piles are more than the pile in the toe of slope.From the effect on the side slope stability and anti-slide pile,the middle of the anti-slide pile earthquake resistance effect is better.

引文

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