【摘要】 二级垛式悬臂式挡土墙由两个单级悬臂式L型挡墙按上下砌垛方式组成.通过采用Midas/GTS软件进行有限元分析,输入不同水平地震加速度峰值,分析二级垛式悬臂式挡墙实际墙背动土压力的分布特点,并与振动台模型试验结果进行对比分析,结果表明:数值计算与试验方法这两者的分析结论较为接近.提出了二级垛式悬臂式挡土墙在地震条件下土压力修正系数;依据二级垛式悬臂式挡土墙的特点,探讨了二级垛式悬臂式挡土墙的应用条件及其优越性,以期为工程应用提供理论依据及技术参考.更多还原

【Abstract】 Two-step cantilevered retaining wall is consisted of two single-step L-shaped cantilever retaining walls with one going to the other in a stack mode. In the study, finite element analysis is carried on by using Midas/GTS software; different peak values of seismic acceleration are input to analyze the retaining wall distribution characteristics of actual dynamic earth pressure of two-step cantilever retaining walls; the results are compared with those of the shaking table model test. The results show that, conclusions of numerical calculation and model test are close; correction coefficient of earth pressure of two-step cantilever retaining wall under different seismic conditions is presented. According to its characteristics, the application and advantages of two-step cantilevered retaining wall are studied to provide application theoretical basis and technical reference.更多还原