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本文研究了表面线荷载对混凝土悬臂挡墙顶部产生的侧向压力。因为混凝土悬臂挡墙结构的设计受到作用于挡墙顶部产生的侧向土压力的极大影响,这种侧向压力是很重要的。用有限元法进行了深入的研究,分阶段模拟了挡墙的施工和填筑。土质用一种完全弹塑性结构关系来模拟,而混凝土—土体接触面上的界面构件用一种双曲线结构关系来模拟。用有限元法预测的侧向压力与基于弹性理论的传统方法预测的侧向压力不同,这种差异被认为是由于弹性理论中的错误推论造成,而弹性理论中任何一种有效的主应力关系的结合对回填土是合理的。
This paper studies the lateral pressure generated by the surface line load on the top of the concrete cantilevered retaining wall. Because the design of the concrete cantilevered wall structure is greatly affected by the lateral earth pressure acting on the top of the retaining wall, this lateral pressure is very important. An in-depth study was conducted using the finite element method and the construction and filling of the retaining wall was simulated in stages. Soil properties are modeled using a fully elasto-plastic structural relationship, while interface components at the concrete-soil interface are simulated using a hyperbolic structure relationship. The lateral pressure predicted by the finite element method is different from the lateral pressure predicted by the traditional method based on the elasticity theory. This difference is considered to be due to the wrong inference in the elasticity theory, and any effective principal stress relationship in the elasticity theory. The combination is reasonable for backfill.