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加筋土挡墙因其施工简便、造价低、节约占地、造型美观等显著特点,在一些占地受限的工点得到了较为广泛的应用。但是加筋挡墙作为柔性结构,也容易产生较其他挡土结构而言较大的变形破坏。文中系统地对加筋土挡墙损坏的受力变形规律、变形机制、变形特点进行分析,对指导实际工程中加筋土挡墙的设计、吸取以前失败的经验教训、扬长避短充分发挥加筋土挡墙的优势,具有重要的意义。以一个天桥引线加筋挡墙挡板损坏作为工程实例,通过ABAQUS有限元数值模拟,详细分析了几种工况下加筋土挡墙中挡板、基础、土工格栅的应力、应变规律,结果与实际加筋土挡墙易发病害规律相符合。在此基础上提出了加筋土挡墙设计中的一些建议,可为类似挡墙设计和病害治理提供有益参考和借鉴。
Reinforced earth retaining wall because of its simple construction, low cost, saving land, handsome in appearance and other salient features, in some limited site has been more widely used. However, the reinforced retaining wall as a flexible structure is also prone to greater deformation and failure than other retaining structures. This paper systematically analyzes the stress and deformation, the deformation mechanism and the deformation characteristics of the reinforced earth retaining wall. It guides the design of the reinforced earth retaining wall in the actual project, absorbs the experience and lessons of previous failures, The advantages of the retaining wall are of great significance. Taking the damage of a flyover reinforced stiffener wall as an example, the stress and strain laws of the baffle, foundation and geogrid in reinforced earth retaining wall were analyzed in detail by ABAQUS numerical simulation. The result is in accordance with the rule of easy occurrence of soil reinforcement wall. On this basis, some suggestions in the design of reinforced earth retaining wall are proposed, which can provide useful reference and reference for similar retaining wall design and disease control.