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水流冲刷常导致桥梁桩基耐久性、承载力降低,使结构安全性不足。文章依托某公路大桥主桥桩基加固工程,通过总结分析顶推钢套筒主动加固桩基法的技术方案、加固构造、施工工艺、施工监控以及应用效果,发现该项技术能有效降低黄河水流冲刷的危害,且对土层桩侧摩阻力较小的桥梁群桩基础加固具有良好的适用性,可为类似桩基加固工程提供参考和借鉴。
Flow erosion often lead to the durability of the bridge pile foundation, bearing capacity decreased, the structural safety is not enough. The article relies on the reinforcement project of pile foundation of the main bridge of a highway bridge. Through summarizing and analyzing the technical scheme, the reinforcement structure, the construction technology, the construction monitoring and the application effect of the pile foundation method of pushing and pushing the steel sleeve actively, it is found that the technology can effectively reduce the Yellow River water flow Scouring hazards, and has good applicability to the reinforcement of bridge group pile foundation with less friction on soil pile side, which can provide reference and reference for the similar pile foundation reinforcement project.