埋入式抗滑桩支护地震边坡研究  

Research of Embedded Anti-Slide Pile Supporting Slope during Earthquake

作　　者：许江波[1,2] 郑颖人[3,2] 叶海林[3,2] 冯夏庭[1] 

机构地区：[1]中科院武汉岩土力学研究所,武汉430071 [2]重庆市地质灾害防治工程技术研究中心,重庆400041 [3]后勤工程学院建筑工程系,重庆400041

出　　处：《地下空间与工程学报》2011年第4期781-788,共8页Chinese Journal of Underground Space and Engineering

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。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.

关 键 词：动力强度折减法 埋入式抗滑桩 边坡抗震设计 

分 类 号：TU443[建筑科学—岩土工程]