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加筋土挡墙作为一种新型的轻型支挡结构,广泛应用于公路、铁路、港口等工程中。随着加筋土挡墙技术的发展,面板的类型也越来越丰富。利用Plaxis有限元软件,对路堤式加筋土挡墙进行了二维有限元计算分析。针对墙背水平土压力、垂直土压力、挡墙侧向位移、筋材应变和挡墙稳定系数等计算结果的分析,探讨了3种类型面板(返包式面板、整体式面板和拼装式面板)对路堤式加筋土挡墙力学性能的影响。研究结果表明,垂直和水平土压力的数值计算结果均小于理论值;相比较与其他两种面板的加筋土挡墙,返包式面板加筋土挡墙筋材的应变最大;面板类型对于加筋土挡墙的整体稳定性几乎没有影响。研究成果为实际工程的应用提供了理论指导。
Reinforced earth retaining wall as a new type of light support structure, widely used in roads, railways, ports and other projects. With the development of reinforced earth retaining wall technology, the type of panel is also more and more rich. Plaxis finite element software is used to analyze the two-dimensional finite element of embankment reinforced earth retaining wall. Based on the analysis of calculation results of horizontal earth pressure, vertical earth pressure, lateral displacement of retaining wall, strain of tendon and stability coefficient of retaining wall, three kinds of panels (backpacking panel, monolithic panel and assembled panel ) On the mechanical properties of embankment reinforced earth retaining walls. The results show that the numerical results of both vertical and horizontal earth pressure are less than the theoretical value. Compared with the other two kinds of reinforced earth retaining walls, the strain of rebar-reinforced earth retaining wall tendons is the largest. The overall stability of the reinforced earth retaining wall has almost no effect. The research results provide theoretical guidance for the practical engineering application.