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沉降破坏是挡土墙结构物的一种重要的破坏形式,研究沉降情况下锚拉式挡土墙的受力和变形特性,对于分析该类型挡土墙的稳定性和耐久性具有重要意义。基于室内模型试验,研究了不同类型锚拉式挡土墙在沉降作用下的侧向土压力、位移和锚杆轴力的变化情况。主要结论如下:单锚杆锚拉式挡土墙对于沉降破坏有较好的抵抗能力,侧向土压力随着沉降量的递增而显著增加且最大值出现在锚杆位置处,设计和施工需对锚杆位置处进行加固处理;提高锚杆位置可以显著减小单锚杆锚拉式挡土墙锚杆轴力和墙体位移,但会造成侧向土压力的增大;双锚杆锚拉式挡土墙可以显著改善沉降中挡土墙受力情况,提高墙体的稳定性,但会导致锚杆轴力的相对增大。
Subsidence damage is an important form of failure of retaining wall structure. Studying the stress and deformation characteristics of anchored retaining wall under the condition of settlement is of great significance for analyzing the stability and durability of this type of retaining wall. Based on the indoor model test, the lateral pressure, displacement and axial force of anchor under different types of anchored retaining walls are studied. The main conclusions are as follows: The single-bolt anchored retaining wall has better resistance to settlement failure. The lateral earth pressure increases significantly with the increase of settlement and the maximum value appears at the position of the anchor. Design and construction Strengthening the position of the anchor; improving the position of the anchor can significantly reduce the anchor axial force and wall displacement of the single-anchor anchor retaining wall, but will cause the lateral earth pressure to increase; the dual anchor Pull retaining wall can significantly improve the settlement of retaining wall stress, improve the stability of the wall, but will lead to the relative increase in the axial force of the anchor.