A Calculation Method for the Distribution of Lateral Force Acting on Stabilizing Piles Considering Soil Arching Effect
A Calculation Method for the Distribution of Lateral Force Acting on Stabilizing Piles Considering Soil Arching Effect
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DOI：
10.1007/s40098-018-0307-5
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发表时间：
2018-06
影响因子：
1.4
通讯作者：
Xi’an Li;Shaowei Wei
中科院分区：
文献类型：
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作者：
Xi’an Li;Shaowei Wei
设置抗滑桩是防止滑坡或边坡破坏的重要措施之一，而抗滑桩的截面尺寸、加固等设计的依据是滑坡推力在桩上的分布。应用最广泛的力估计方法之一是由Ito提出的，它是基于塑性变形理论的。土拱效应是由于桩中土和桩后土的相对运动而产生的剪切阻力引起的，它对桩的侧向力有很大的影响。考虑土体拱化效应和伊藤塑性变形法，推导出一种新的计算方法。新公式确定了抗滑桩推力的取值范围。通过对Ito引用的实例进行分析，与Ito的方法进行了对比，新方法的结果更接近于观测值。通过对沙北一号坡5#桩的实例进行对比，也可以得到类似的结论。因此，估算土质边坡滑坡推力的新方法在抗滑桩设计中具有一定的适用性。
Setting stabilizing piles is one of the significant measures to avoid landslides or slope failures, and the basis of the design of the piles, such as section’s size and reinforcement, is the distribution of landslide thrust force acting on the piles. One of the most widely used methods to estimate the force is proposed by Ito, which is based on the theory of plastic deformation. Soil arching effect is caused by the shear resistance because of the relative movement of the soil in the middle and behind the piles, and the effect has great impact on the lateral force. Considering the soil arching effect and Ito’s plastic deformation method, we deduced a new calculation method. The new formula defines the range of the value of thrust force on stabilizing piles. Contrasted with Ito’ method through the analysis of the examples quoted by Ito, the results by the new method was closer to the observed values. The similar conclusion also can be obtained through the contrast in the example of 5# pile in Shabei I Slope. So the new method to estimate the landslide thrust force in soil slope has applicability in the design of stabilizing piles.