某沉降连续梁桥多点顶升加固关键技术分析

On analysis of intensification key technique for multipoint lifting on some subsidence continuous girder bridge

针对某高速公路连续梁桥浇筑完成后下部桩基产生不均匀沉降,详细介绍了采用顶升恢复的处理方案,对顶升方案的顶升量确定及多点顶升不平衡效应进行了详细论述,并通过顶升过程的监控验证了各项分析结论,为国内同类型的桥梁加固施工提供了很好的指导。

Aiming at the uneven settlement of pile foundation after the complete of the bridge grouting of some continuous girder bridge on some express highways, the paper introduces the treatment scheme for adopting the lifting recovery, indicates the identification of the lifting volume of the lifting scheme and the unbalanced effect of the multi-point lifting, and proves the analysis and conclusion by the supervision in the lifting process, so as to provide better direction for the bridge intensification construction of the same types in China.