【作者】 张丹丹； 刘小丽； 黄敏； 李白；

【Author】 ZHANG Dandan LIU Xiaoli HUANG Min LI Bai (Key Laboratory of Marine Environmental Science and Ecology,Ministry of Education,College of Environmental Science and Engineering, Ocean University of China,Qingdao 266100)

【机构】 中国海洋大学海洋环境与生态教育部重点实验室； 中国海洋大学环境科学与工程学院；

【摘要】 微型桩加固岩石滑坡较传统抗滑桩而言具有小型化、施工简便的优势,对相应微型桩的内力变形特征进行分析具有重要意义。结合一个具体的岩石滑坡治理工程,利用有限元方法,分析了采用微型桩加固岩石滑坡的可行性,并对微型群桩加固岩石滑坡的内力变形特征进行了分析。结果表明,采用两组微型群桩加固后的该岩石滑坡,其安全系数达到1.35,能够满足滑坡治理的要求;各微型桩均产生了一定量值的弯矩、剪力和轴力,靠近坡顶的微型群桩,在滑面以上,沿滑动方向的第1排微型桩的弯矩和剪力最大;滑面以下,沿滑动方向的第3排微型桩的弯矩和剪力最大;沿微型桩桩身的轴力亦为沿滑动方向的第1排微型桩最大。对于该滑坡治理工程而言,位于坡脚处的微型群桩,其内力基本集中于滑面位置。更多还原

【Abstract】 For the advantage of micropile in rock slide reinforcement comparing to the traditional anti-sliding pile, it is necessary to analyze its mechanical characteristics.For a certain rock landslide,using the finite element method, the mechaniccal characteristics of micropile group for repairing the rock landslide were analyzed.The results show that the factor of safety is up to 1.35 when there are two micropile groups to reinforce rock landslide.For the micropile group close to the top of the landslide,the bending moment and shearing force of the first row pile in sliding direction are largest above the slip surface,and the axial force of this row pile is also largest.Below the slip surface,the maximum bending moment and the maximum shear force occur in the third row pile.For the micropile group close to the toe of the landslide,the inner force is mainly generated at the slip surface.更多还原