加筋格宾挡墙地震反应与动土压力分析

本文通过大型的模型试验，研究了以红砂岩为填料在水平地震作用下加筋格宾挡土墙的地震反应。输入不同类型和幅值的地震波激励，探讨地震作用下模型挡墙的动力特性与动力响应规律。试验结果表明，加筋格宾结构为优良的抗震结构，其墙内对输入加速度有明显的放大效应。沿墙高方向水平加速度放大倍数的增量坡度比较平缓，随着墙高的增大，水平加速度有增大的趋势。墙内各质点对ELCE＿NS地震波的水平加速度放大倍数为1～1.88倍，对HACHI＿EW地震波的放大倍数为1～2.78倍。墙面板的水平加速度放大倍数随振幅增大呈现明显的递减趋势，变化基本上为线性的。竖向加速度峰值响应在墙面及墙顶显著增大，可达到台面水平加速度峰值的44%~56%。推导了加筋格宾挡墙在水平地震荷载作用下的竖向动土压力的振动方程。

Analysis on seismic response and dynamic earth pressure of reinforced gabion wall

Large model tests were conducted on reinforced gabion walls filled with red sandstone under horizontal seismic loading to investigate the seismic response of walls.A series of tests were performed with different input seismic wave types and amplitudes.The dynamic characteristics and dynamic responses of model wall under horizontal seismic loading were discussed.Results show that reinforced gabion structure is an excellent anti-seismic structure.There is significant amplification effect of input acceleration...