研究结论：包裹端的作用能使地震波沿墙体向上传播放大过程中得到减弱，因此包裹式加筋土挡土墙抗震性优于普通加筋土挡土墙; 在0.4 g 和0.616 g 时，模型产生明显的震陷且在墙面板与加筋土体交界处及加筋土体与未加筋土体交界处先后产生裂缝; 在各峰值加速度作用下，两种试验模型的潜在破裂面位置分布大致相同，近似为0.45 H 的竖折线，而《铁路路基支挡结构设计规范》( TB 10025—2006) 中，潜在破裂面采用0.3 H分界线，现行规范推荐方法偏于不安全，设计时拉筋长度应适当增加; 根据理论计算和试验数据计算的加筋土挡土墙内、外部稳定性分析结果，抗滑系数 Kc、抗倾覆系数 K0、全墙抗拔稳定系数 Ks与各层土工格栅抗拔稳定系数 Ksi理论计算均大于试验数据计算，按规范计算偏于不安全，应作适当修改。

Research conclusions:The warped reinforced earth － retaining wall is better than the ordinary earth － retaining wall in seismic property because the wrapped effect can make seismic wave weak during the propagation and amplification of the seismic wave along the wall up．When in 0.4 g and 0.616 g ，the model produced the evident seismic fall，and cracks happened in the junctions between the wall panel and the reinforced soil and between the reinforced soil and the unreinforced soil．In the peak acceleration，the potential fracture surface of these two kinds of experimental models were distributed in the same position，approximate to 0.45 H vertical line． But in the " Code for Design of Retaining Structure of Railway Subgrade" (TB 10025—2006) ，the potential fracture surface is approximate to 0.3 H vertical line and it slants to unsafety．So the reinforcing length should be increased in design． From the theoretical calculation and the analysis results of the internal and external stability of the reinforced earth － retaining wall obtained by the test data calculation，it was seen the coefficient of sliding resistance，the coefficient of capsizing resistance，the coefficient of uplifting resistance of the whole wall and the coefficient of uplifting resistance of the geogrid in various layers obtained by theoretical calculation were larger than the test data calculation． This showed the current code was unsafe and could be properly modified．