李绵绵,赵法锁,宋飞,刘锋.双排抗滑桩的受力特性研究——以柳家坡2号滑坡治理工程为例[J].西北地质,2019,52(2):181-189
双排抗滑桩的受力特性研究——以柳家坡2号滑坡治理工程为例
Force Characteristics of Double-row Anti-slide Pile in Liujiapo Landslide
投稿时间:2018-10-23  修订日期:2019-03-26
DOI:10.19751/j.cnki.61-1149/p.2019.02.019
中文关键词:  滑坡推力;双排抗滑桩;受力特性;滑坡治理;柳家坡2号滑坡
英文关键词:landslide thrust;double-row anti-slide piles;force characteristics;landslide management;Liujiapo No. 2 landslide
基金项目:陕西省水利科技项目(2018slkj-14)资助
作者单位
李绵绵 长安大学 地质工程与测绘学院, 陕西 西安 710054 
赵法锁 长安大学 地质工程与测绘学院, 陕西 西安 710054 
宋飞 长安大学 地质工程与测绘学院, 陕西 西安 710054 
刘锋 陕西核工业工程勘察院有限公司, 陕西 西安 710054 
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中文摘要:
      岚皋县柳家坡2号滑坡的推力和规模较大,单排桩或者一般的支挡结构已经无法满足抗滑力的要求。而双排抗滑桩在满足抗滑力的同时,更具有刚度大、稳定性高等特点。为了研究岚皋县柳家坡2号滑坡在治理过程中双排抗滑桩各排桩分担的滑坡推力的大小,通过对前后两排桩进行单独受力分析,推导出桩身变形推力的计算公式;通过对双排桩治理后的滑坡进行二维模拟,对滑坡的稳定性、应力与应变以及双排桩的弯矩与剪力进行深入的探究分析。研究表明,抗滑桩在滑面处及锚固段中部受到的剪力最大,且后排桩相较前排桩所承受的滑坡推力更大,这为抗滑桩的设计计算提供了参考意义。
英文摘要:
      The Liujiapo No. 2 landslide in Langao County has large thrust and scale, so the single-row pile or general retaining structure cannot meet the demand of anti-sliding force when the thrust of the landslide achieves 2000KN/m. It is also difficult to accomplish the construction under the tough topographic conditions and limited land acquisition in the Liujiapo No. 2 landslide. But the double-row anti-slide pile has many benfits of large stiffness, wonderful stability and favorable stress, which is commendably fulfilled the demand of anti-sliding force. In order to study the magnitude of landslide thrust shared by two rows of anti-slide piles in Liujiapo 2 landslide in Langao county, the each force of double-row anti-slide piles has been analyzed separately, and the calculation formula of pile body deformation thrust has been deduced for the elastic foundation beam. The Midas/GTS has been used to analyze the two-dimensional pile under the control of double-row piles, and then the line charts of shear force and the bending moment of landslide anti-slide pile have been obtained. The study not only shows that the shearing force of anti-slide pile is greatest at sliding surface and middle of anchorage section, but also that the back piles bears more landslide thrust than the front ones, which provides reference for the calculation of the reinforcement of anti-slide piles on landslides.
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