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对于桥梁桩基础,桩顶的受力情况会影响桩身的受力,关系到桩基础的安全性和稳定性。本文以苏通大桥桩基础为例,基于施工期的实测数据,对桥梁桩基础桩顶轴力进行分析。分析结果表明,施工过程对桩顶轴力影响非常大,由于受到群桩效应的影响,桥梁桩基础在施工期受力并不均匀。分析结果可为今后桥梁施工期的桩基础设计提供参考。
For the bridge pile foundation, the stress of pile top will affect the stress of the pile body, which is related to the safety and stability of pile foundation. This paper takes Sutong Bridge Pile Foundation as an example, based on the measured data during the construction period, analyzes the top axial force of pile foundation. The analysis results show that the construction process has a great influence on the axial force of the top of the pile. Due to the effect of pile groups, the pile foundation of the bridge is not uniformly loaded during construction. The results of the analysis can provide references for the design of pile foundation in the future bridge construction period.