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互锚式挡土墙具有整体性好、抗震能力强等特点,但由于锚杆的互锚作用,其土压力的分布规律较传统挡墙差异很大。为研究互锚式挡土墙的土压力分布规律,进行了室内模型试验和FLAC3D数值计算。模型试验在墙后不同填土深度埋设土压力盒,监测了墙不同填土高度的竖向土压力、侧向土压力以及土压力的横向分布。对照模型试验结果,利用FLAC3D数值计算对模型试验结果进行了验证。结果表明:互锚式挡土墙土压力分布存在明显的三维土拱效应;竖向土压力、侧向土压力和横向土压力均呈非线性分布;竖向和侧向土压力的峰值出现在锚杆附近。
Mutual anchoring retaining wall has the characteristics of good integrity and strong anti-seismic capability. However, due to the mutual anchoring effect of anchors, the distribution of earth pressure is quite different from the traditional retaining wall. In order to study the earth pressure distribution of the mutual anchored retaining wall, indoor model test and FLAC3D numerical calculation were carried out. In the model test, the earth pressure box is buried at different depths of the wall, and the vertical earth pressure, lateral earth pressure and lateral pressure of the soil under different earth filling levels are monitored. According to the model test results, the model test results were verified by FLAC3D numerical calculation. The results show that there is a clear three-dimensional soil arching effect for the earth pressure distribution in the mutual anchored retaining wall. The vertical earth pressure, the lateral earth pressure and the lateral earth pressure show a nonlinear distribution. The vertical and lateral earth pressure peaks appear in the Near the anchor