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埋入式抗滑桩支护地震边坡研究

Research of Embedded Anti-Slide Pile Supporting Slope during Earthquake

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【作者】 许江波郑颖人叶海林冯夏庭

【Author】 Xu Jiangbo1,3,Zheng Yingren2,3,Ye Hailin2,3,Feng Xiating1(1.Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;2.Department of Civil Engineering, Logistical Engineering University,Chongqing 400041,China;3.Chongqing Engineering and Technology Research Center of Geological Hazards Control,Chongqing 400041,China)

【机构】 中科院武汉岩土力学研究所重庆市地质灾害防治工程技术研究中心后勤工程学院建筑工程系

【摘要】 近几年,埋入式抗滑桩由于其自身的特点而在边坡支护中得到广泛应用,成为边坡支护的一种主要支护方式。静力情况下,埋入式抗滑桩的研究已经较为成熟,动力作用下的研究目前还较少。采用动力强度折减法,利用FLAC软件,提出了抗震设计新方法。通过比较地震作用前后桩的内力值,二者之间的较大值作为桩的抗震设计内力值,同时得到了桩体的内力分布形式。文章对一个具体边坡进行计算分析,结果表明:埋入式抗滑桩不仅在静力情况下能够较好的支护边坡,而且在地震作用下能够满足抗震设计的要求,为边坡的抗震设计提供了一种新的支护方法。

【Abstract】 In recent years,the embedded anti-slide pile is widely used in the slope support due to its specific characteristics and becomes a main slope support form.In static circumstances,the research of embedded anti-slide pile has been relatively mature,but in dynamic circumstances such pile is rarely studied.This paper adopted dynamic strength reduction,using the FLAC software,and proposes a new method of seismic design.Through the comparison of the earthquake effect on pile,it takes a larger value of internal force for the seismic design of pile,and gets the internal force distribution form of pile.Based on a specific slope,the result shows that not only in static circumstances but also in dynamic calculation,the embedded anti-slide pile can meet the requirements for seismic design of the slope,and it provides a new method for the seismic design of slope support.

  • 【文献出处】 地下空间与工程学报 ,Chinese Journal of Underground Space and Engineering , 编辑部邮箱 ,2011年04期
  • 【分类号】TU472
  • 【被引频次】19
  • 【下载频次】476
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