对拉式加筋土挡墙结构行为数值模拟研究  

Study on numerical simulation of structural behavior of tension resistant reinforced soil retaining wall

作　　者：孙尚兴 杨广庆 马天明 李许佳 高平利 SUN Shangxing;YANG Guangqing;MA Tianming;LI Xujia;GAO Pingli(China Civil Engineering Construction Corporation-ABU DHABI,Abu Dhabi 43076,UAE;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Engineering Research Center on Application of Geosynthetics,Shijiazhuang 050043,China;School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]中国土木工程集团有限公司阿联酋分公司,阿联酋阿布扎比43076 [2]石家庄铁道大学土木工程学院,石家庄050043 [3]土工合成材料应用河北省工程研究中心,石家庄050043 [4]石家庄铁道大学交通运输学院,石家庄050043

出　　处：《吉林建筑大学学报》2025年第1期51-59,共9页Journal of Jilin Jianzhu University

基　　金：河北省省级科技计划资助(225676162GH)。

摘　　要：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.

关 键 词：有限元分析 对拉式加筋土挡墙 土工带 土工格栅 

分 类 号：TU476.4[建筑科学—结构工程]