吉林建筑大学学报

为了系统、深入地研究对拉式加筋土挡墙的加筋机理和设计方法，以阿联酋高速重载双线铁路项目为工程背景，基于有限元数值模拟，对比分析了两种加筋材料的对拉式加筋土挡墙结构行为，并基于土工带对拉式加筋土挡墙的筋材竖向间距、水平间距及筋材预应力等技术参数，对受力与变形的影响进行了设计优化。研究结果表明：对拉式加筋可以显著降低墙体竖向应力及墙面水平土压力，但在挡土墙底部加筋效果较弱；返包土工格栅对拉式加筋土挡墙在控制墙面水平变形方面优于土工带对拉式加筋土挡墙。因此，综合考虑安全、变形、经济及施工难度，在土工带与土工格栅加筋均能满足施工安全及变形要求的前提下，选择土工带作为对拉式加筋土挡墙的筋材更为经济，且施工更简便。

To conduct a systematic and in-depth investigation into the reinforcement mechanism and design methodology of the tensioned reinforced soil retaining walls(TRSRWs), taking the Emirates High-Speed HeavyHaul Double-Track Railway Project as the engineering context. Utilizing finite element numerical simulations, it comparatively analyzes the structural behavior of TRSRWs reinforced with two distinct materials. Furthermore,we optimize the design by examining the effects of technical parameters such as the vertical and horizontal spacing of reinforcement strips, as well as the prestress applied to the reinforcement, specifically for TRSRWs utilizing geobelts. The findings reveal that tensioned reinforcement significantly reduces the vertical stress in the wall and the horizontal earth pressure on the wall face, albeit with weaker reinforcement effectiveness at the base of the retaining wall. Notably, the TRSRW reinforced with overwrapped geogrids outperforms that with geobelts in controlling horizontal deformations of the wall face. Consequently, taking into account safety, deformation,economy, and construction complexity, it is concluded that when both geobelts and geogrids can satisfy the construction safety and deformation requirements, the selection of geobelts as reinforcement material for TRSRWs is more economical and facilitates easier construction.