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首页> 外文期刊>Journal of Civil Engineering and Science >An Investigation on the Dynamic Behaviour of Soil Nail Walls
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An Investigation on the Dynamic Behaviour of Soil Nail Walls

机译：土钉墙动力特性研究

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Soil nailing is one of the extensively used techniques for stabilizing cut slopes in railway and highway construction. In this method, the native soil is strengthened by placing steel rods into drilled holes in the walls and grouted. The dynamic behaviour of soil nail walls is affected by the relative density of backfill, the length and diameter of nails, axial force, shear force and bending moment developed along the nails. Laboratory plate load tests were performed on a soil nail wall model of 1 m height having vertical facing with relative densities of 25% and 50% and two nail lengths of 0.5 m and 0.6 m to study the effect of relative density of soil and length of nails on stability of soil nail wall. A detailed finite element analysis was carried out on soil nail wall model having 1 m height and vertical facing in order to determine the axial force, shear force and bending moment developed along nails. The settlement of the soil nail wall was decreased with the increase in relative density of sand. The increase in length of nail from 0.5 m to 0.6 m resulted in decrease of settlement for the soil nail wall having 1 m heght. The axial force along nails increased with the embedment depth. Both the bending moment and shear force were found to be concentrated near the face of the wall. A parametric study was also carried out and design tables were prepared for various earthquake coefficients.
机译：土钉是在铁路和公路建设中稳定挖坡的一种广泛使用的技术。在这种方法中，通过将钢棒放入墙体的钻孔中并进行灌浆来加强原生土壤。土钉墙的动态特性受回填的相对密度，钉子的长度和直径，沿钉子产生的轴向力，剪切力和弯矩的影响。在1 m高的土钉墙模型上进行实验室平板荷载试验，该模型具有垂直面，相对密度为25％和50％，两个钉子长度分别为0.5 m和0.6 m，以研究土的相对密度和长度的影响。钉子对土壤钉壁的稳定性。为了确定沿钉子产生的轴向力，剪切力和弯矩，对高度为1 m且垂直面的土钉墙模型进行了详细的有限元分析。随着砂土相对密度的增加，土钉墙的沉降量减少。钉子的长度从0.5 m增加到0.6 m，导致具有1 m的土钉壁沉降减少。沿钉子的轴向力随着埋深的增加而增加。发现弯矩和剪切力都集中在墙面附近。还进行了参数研究，并为各种地震系数准备了设计表。

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