堆积层滑坡推力沿抗滑桩桩身分布规律研究  

Study on thrust distribution law along anti-slide pile body in accumulation landslide

作　　者：李恒[1] 任青阳[1] 宁龙飞[1] 

机构地区：[1]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《人民长江》2013年第13期35-38,共4页Yangtze River

摘　　要：以长江三峡库区典型堆积层滑坡为研究对象,从堆积层滑坡推力传递机制出发,建立桩土相互作用模型。以某典型堆积层滑坡为例,运用数值模拟软件,建立三维模型,得出考虑桩侧摩阻力情况下滑坡推力沿抗滑桩桩身的分布曲线。与前人部分研究成果比较发现:考虑桩侧摩阻力能更好地解释桩顶后缘拉裂缝现象;滑坡推力合力作用点有所上升,将使设计偏于安全。Taking a typical accumulation landslide in Three Gorges Reservoir area as a research object and based on the transmission mechanism of the landslide thrust,a pile-soil interaction model is established.A three-dimensional model for a typical accumulation landslide is set up by numerical simulation software.By the model,the distribution curve of thrust along the pile in consideration of pile side friction is figured out.Compared with the previous researches,the analysis considering pile side friction can well explain the tension crack phenomenon behind the pile top,the point of total force is higher,which makes the design safer.

关 键 词：推力分布 桩侧摩阻力 桩土相互作用 堆积层滑坡 

分 类 号：P642.22[天文地球—工程地质学]