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土压力作用对墩柱有一定影响,尤其是回填土对桩柱一侧产生的不平衡土压力,使得桩柱可以产生偏位,有的出现裂缝,甚至可以将桩柱直接推倒。本文结合重庆奉节至云阳高速公路前坪大桥出现的桩柱偏位和出现裂缝实例,分析回填土体产生的土压力对左线2号墩底系梁至原地面之间产生的影响,得出产生裂缝的原因。并且提出针对不同偏位及裂缝产生情况的处理方案。本实例采用了扁担桩加承台方案对下部进行加固处理,对于在工程实践上出现的类似问题的处理具有一定借鉴作用。
The effect of earth pressure on the pier has an impact, especially the unbalanced earth pressure on the side of the pile due to the backfill so that the pile can be offset, some cracks occur, and even the pile can be directly pushed down. In this paper, the pile deviation and cracks occurred in Qianping Bridge from Fengjie to Yunyang Expressway in Chongqing were analyzed to analyze the influence of earth pressure produced by backfill soil on the ground between No.2 pier on the left line and the original ground. The reason for the crack. And proposed for different positions and cracks generated by the treatment program. In this case, the plan of piled pile plus cap was adopted to reinforce the lower part, which would be of reference for the handling of similar problems in engineering practice.