锚定板对返包式加筋土挡墙性能影响数值模拟研究  

Numerical Simulation of the Influence of Anchored Plate on the Performance of Repacked Reinforced Earth Retaining Wall

作　　者：林展展 陈宝林 黄陈 LIN Zhanzhan;CHEN Baolin;HUANG Chen(Guizhou Transportation Planning Survey and Design Academe Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550081

出　　处：《交通科技》2023年第5期148-152,共5页Transportation Science & Technology

摘　　要：由于加筋土挡墙结构具有轻便、造价低廉、抗震性能优越等优点,被广泛应用于国内外工程实践中。文中以某高速铁路路基返包式加筋土挡墙为原型,运用有限差分软件FLAC^(3D)对其建模分析,并通过控制土体的抗剪强度指标的方法研究锚定板的增设对加筋土挡墙面板水平位移和格栅拉应力的影响,同时对土工格栅参数如加筋长度、格栅竖向间距指标对锚定板锚固效果的影响进行了相关研究。Due to the advantages of lightweight,low cost and superior seismic performance,reinforced earth retaining wall structure is widely used in engineering practice at home and abroad.The reinforced soil retaining wall of a high-speed railroad roadbed is modeled and analyzed by using the finite difference software FLAC 3D.By controlling the shear strength index of the soil,the effect of the additional anchor plate on the horizontal displacement of the reinforced earth retaining wall panel and the tensile stress of the grid is studied.The influence of geogrid parameters such as reinforcement length and vertical spacing index of grids on the anchorage effect of anchor plates is also studied.The results show that the addition of anchor plates is beneficial for reducing the horizontal displacement of the panel and increasing the stability of the reinforced soil retaining wall,but this beneficial effect continuously decreases with the increase of the internal friction angle of the filler.A grid length of 4 meters and a grid spacing of 0.6 meters can provide better anchoring performance for the anchor plate.

关 键 词：返包式加筋土挡墙 锚定板加固性能 加固系数 土工格栅 

分 类 号：U417.11[交通运输工程—道路与铁道工程]