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A method for active seismic earth thrusts of granular backfill acting on cantilever retaining walls

机译:一种作用在悬臂式挡土墙上的粒状回填主动地震土推力的方法

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The failure mechanism plays an important role in the active seismic earth thrusts acting on cantilever retaining walls. Cantilever retaining walls can be classified as having a long heel or a short heel based on the intersection between the stem of the retaining wall and the failure surface. In the literature, different seismic earth thrust calculation methods have been suggested considering the long heel or the short heel cases. However, no unique study has been done that is applicable to walls with either a long heel or a short heel. The aim of this study is to suggest a new active seismic earth thrust calculation method for granular soils which is applicable to retaining walls with either a short heel or a long heel using a pseudo-static approach. Three different earth thrusts are considered to be acting on three different parts of a wall backface. Each thrust is derived in terms of the parameters defining the wall geometry, the soil properties and the seismic activity. The thrust coefficients are determined by maximizing the sum of the horizontal components of the earth thrusts. An algorithm is developed and coded for this aim. The results of the suggested method are compared with those of other conventional methods and an experimental study. (C) 2019 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.
机译:破坏机制在作用于悬臂挡土墙的主动地震土推力中起着重要作用。悬臂式挡土墙可以根据挡土墙的主干和破坏面之间的交点分为长后跟短。在文献中,考虑到长跟或短跟情况,已经提出了不同的地震推力计算方法。但是,还没有进行适用于长跟或短跟的墙的独特研究。这项研究的目的是提出一种适用于粒状土壤的新型主动地震土推力计算方法,该方法适用于采用伪静态方法的短后跟或长后跟的挡土墙。三种不同的推力被认为作用在墙体背面的三个不同部分。每个推力都是根据定义墙的几何形状,土壤特性和地震活动的参数得出的。通过最大化推力的水平分量之和来确定推力系数。为此目的,开发了一种算法并进行了编码。将该方法的结果与其他常规方法和实验研究进行了比较。 (C)2019年由Elsevier B.V.代表日本岩土工程学会制作和主持。

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