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文章结合工程实例,墙顶产生水平移约170mm(最大值),导致挡墙结构破坏而引起反思,究其原因:一是原设计桩顶托梁厚度为1.2m,宽度为3m,其高宽比为1.2:3.0=0.4,实际是板,不是梁,按规定梁的高宽比必须大于1.0,因此产生裂缝。二是原设计没有检算挡墙受水平推力后,孔桩侧面地基弹性抗力产生的位移对挡墙结构的影响。
The article combined with the engineering example, the wall top produces a horizontal displacement of about 170mm (maximum), resulting in the destruction of the retaining wall caused by reflection, the reason: First, the original design of the top joist thickness of 1.2m, width of 3m, its width Ratio of 1.2: 3.0 = 0.4, the actual board, not the beam, according to the provisions of the beam aspect ratio must be greater than 1.0, resulting in cracks. Second, the original design did not check the retaining wall by the level of thrust, the lateral displacement of the pile foundation of the elastic resistance of the retaining wall structure.