Numerical Simulation Analysis of Geogrid-Reinforced Embankment on Soft Clay
Numerical Simulation Analysis of Geogrid-Reinforced Embankment on Soft Clay
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DOI：
10.1007/978-981-13-0122-3_42
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发表时间：
2018-05
期刊：
影响因子：
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通讯作者：
Yuanyuan Zhou;Zhenming Shi;Qingzhao Zhang;Songbo Yu
中科院分区：
文献类型：
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作者：
Yuanyuan Zhou;Zhenming Shi;Qingzhao Zhang;Songbo Yu
在前期离心试验的基础上，采用有限差分程序FLAC3D对离心试验及相应的原型路堤进行了数值模拟。分析了路堤沉降、加筋拉力和水平位移的变化规律。结果表明，计算得到的位移和钢筋拉力与实测值吻合较好，表明采用的数值模型是合理的。加固可以减小基础的水平位移。原型路堤离中心的沉降量和沉降差均小于离心模型。结果表明，原型数值模型能充分考虑加筋效应，有利于分散路堤荷载，均匀地基浅层应力。
Based on a previous centrifugal test, the finite-difference program FLAC3D was employed to simulate the centrifugal test and the prototype embankment corresponding to this centrifugal test. The variations of embankment settlements, reinforcement tensile forces and horizontal displacements were analysed. The results show that the computed displacements and reinforcement tensile forces are in good agreement with the measured ones, indicating the appropriate numerical model. Reinforcement can reduce the horizontal displacement of foundation. The settlement and the difference of the prototype embankment, away from the center, are less than those of centrifugal model. It is shown that the numerical model for the prototype can fully consider the reinforcement effect, which will help to diffuse the embankment load and homogenize the shallow stress of foundation.