顺倾岩石边坡中联合支挡结构的简化计算

The Simplified Calculation of United Retaining Structure Used in the Layered Dip Rocky Slope

锚索框架-抗滑桩联合支挡结构在高边坡和大型滑坡治理中应用广泛,但其完备的设计计算理论尚未建立,原因之一是联合支挡结构的变形协调条件非常复杂。为了解决这一问题,选择滑动变形相对简单的顺倾岩石边坡,对其使用的联合支挡结构的计算问题进行了研究。根据顺倾岩石边坡滑体刚度大、滑移方向单一的特点,建立了与其变形特点相适应的变形协调方程,结合传递系数法和现有的锚索桩计算理论,推导出联合支挡结构使用阶段滑坡推力增量的分配方程,解决了顺倾岩石边坡中联合支挡结构的简化计算问题。研究表明:建立与其变形特点相适应的变形协调方程是求解联合支挡结构计算问题的关键;通过合理的假定,特殊条件下联合支挡结构的计算问题可以得到简化。

Although the united retaining structure of anchored framework and anti-slide pile has been widely used in the treat-ment engineering of high slopes and huge-scaled landslides, the complete design theory of this kind of structure has not been builtyet. One of the reasons is that the compatible deformation equation of the united retaining structure is too complex. In this paper, thecalculation theory of the united retaining structure used in the layered dip rocky slope was researched to find the approach of buil-ding the complete design theory of this type of structure used in any slope, since the deformation characters of layered dip rocky slopeare relatively simple. According to the deformation characters of layered dip rocky slope such as huge rigidity and single direction ofthe movement of the slide mass, the compatible deformation equation suited to the deformation characters of layered dip rocky slopewas built, and the distribution equations of the increment of landslide thrust during application period were deduced by combiningthe built compatible deformation equation and transmitting coefficient method and the existing calculation theory of anchored anti-slide pile, that means the simplified calculation theory of the united retaining structure used in the layered dip rocky slope was built.The studies indicate that building the compatible deformation equation suited to the deformation characters of slope is the key prob?lem of building the complete design theory of the united retaining structure, and through reasonable hypothesis, the calculation theo-ry of the united retaining structure used in special condition can be simplified.