新型土工织物结构加筋土挡墙数值模拟研究  

Numerical simulation study on new geotextile structure reinforced soil retaining wall

作　　者：谢小慧 李风祥 刘伟超 杨艳 XIE Xiaohui;LI Fengxiang;LIU Weichao;YANG Yan(Key Laboratory of Roads and Railway Engineering Safety Control,Ministry of Education(Shijiazhuang Tiedao University),Shijiazhuang 050043,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;The Second Construction Co.,Ltd.of China Construction Eighth Engineering Bureau,Jinan 250014,China;School of Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]道路与铁道工程安全保障省部共建教育部重点实验室(石家庄铁道大学),河北石家庄050043 [2]石家庄铁道大学土木工程学院,河北石家庄050043 [3]中建八局第二建设有限公司,山东济南250014 [4]石家庄铁道大学交通运输学院,河北石家庄050043

出　　处：《甘肃科学学报》2024年第5期117-124,共8页Journal of Gansu Sciences

基　　金：国家重点研发计划项目(2022YFE0104600)。

摘　　要：返包横肋土工织物具有较好的筋土界面作用特性,为验证其在加筋结构中的加筋效果并对相关影响因素进行分析,利用有限元软件建立加筋土挡墙数值模型,在验证数值模拟可信度的基础上,分析了返包横肋的数量、长度和位置、方向等因素对墙顶沉降、竖向附加应力的影响。研究结果表明:土工织物缝合返包横肋可更好地增加挡墙的整体稳定性、有效限制墙体沉降;适当减少墙体下部返包肋条数量时对墙体受力和变形影响不大;返包横肋设置在荷载作用点正下方且其长度与荷载作用宽度相同时,墙顶沉降、竖向附加应力明显减小;返包横肋返包方向对墙体的受力与变形影响不大。研究结果可为返包横肋土工织物加筋应用提供参考。Geotextiles with wrapped transverse ribs have good reinforcement-soil interface characteristics.In order to verify its reinforcement effect in the reinforced structure and analyze the related influencing factors,the numerical model of reinforced soil retaining wall is established by using finite element software.On the basis of verifying the credibility of the numerical simulation,the influence of the number,length and position of the back-wrapped transverse ribs,the direction of the back-wrapped transverse ribs on the settlement on wall top and the vertical superimposed stress are analyzed.The results show that the geotextile stitched back-wrapped transverse ribs can effectively increase the overall stability of the retaining wall and effectively limit the settlement of the wall.Reducing the number of wrapped transverse ribs properly in the lower part of the wall has little effect on the superimposed stress and deformation of the wall.When the wrapped transverse ribs are set directly below the load point and its length is the same as the width of the load,the settlement of the wall top and the vertical superimposed stress are obviously reduced.The direction of the transverse ribs has little effect on the superimposed stress and deformation of the wall.The research results can provide a reference for the application of back-wrapped transverse ribs geotextile reinforcement.

关 键 词：土工织物 加筋土挡墙 数值模拟 返包横肋 

分 类 号：TU431[建筑科学—岩土工程]