废旧轮胎加筋路堤边坡数值模拟计算分析

发布时间：2018-11-23 18:11

【摘要】：在前期振动台模型试验的基础上,通过FLAC~(3D)数值模拟计算对比分析,对地震作用下路堤边坡模型的加速度响应性能,废旧轮胎的加筋效果进行了探讨。结果表明,与素土边坡相比,废旧轮胎加筋可有效地阻隔地震力的传递,降低路堤边坡对地震加速度的放大效应和路堤边坡的位移响应,显著地减弱土体在地震作用下的破坏程度。在1/3坡高以后,加筋边坡加速度放大倍数都逐渐增大,且素土与加筋土加速度放大倍数差别开始变得显著,并在靠近路堤边坡顶部位置达到最大值。FLAC~(3D)数值模拟计算出来的轮胎加筋加速度放大倍数略小于振动台试验的结果。
[Abstract]:Based on the previous shaking table model test, the acceleration response performance of embankment slope model under earthquake and the reinforcement effect of waste tire are discussed by FLAC~ (3D) numerical simulation. The results show that compared with the plain soil slope, the reinforcement of waste tire can effectively block the transmission of seismic force, and reduce the amplification effect of the embankment slope to the earthquake acceleration and the displacement response of the embankment slope. The failure degree of soil under earthquake is significantly reduced. After 1 / 3 slope height, the acceleration magnification of reinforced slope increased gradually, and the difference of acceleration magnification between plain soil and reinforced soil became significant. The maximum value is reached near the top of the embankment slope, and the magnification of the tire reinforced acceleration calculated by FLAC~ (3D) numerical simulation is slightly smaller than the result of shaking table test.
【作者单位】：湖北工业大学土木工程与建筑学院;
【基金】：岩土力学与工程国家重点实验室开放基金(Z014011) 国家自然科学基金项目(51308197,51178166) 湖北省桥梁安全监控技术及装备工程技术研究中心基金(QLZX2014016) 长江科学院开放研究基金资助项目(CKWV2013222/KY)
【分类号】：U416.14

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