某钢箱梁桥整体顶升施工风险分析与控制

Risk Analysis and Control for Jacking Construction of a Steel Box Girder Bridge

桥梁整体顶升是对既有桥梁的改造措施。每个案例可能采取不同的安全、技术措施,需要对桥梁顶升过程的风险进行针对性分析,并提出相应的风险解决与控制预案。结合一个大型钢箱梁桥整体顶升案例,分析了顶升过程中的关键风险,提出控制措施及实施方案。结合施工过程中的监测结果,证明了相关施工控制效果。研究成果对类似顶升工程有一定的指导意义。

Integral bridge jacking is areconstruction method to existing bridges.Ineach case,there are different safety and technical problems to be solved,hence it is necessary to analyze the risk of bridge jacking process andput forwardcorresponding risk solutions and control plans.Based on the case of the integral jacking of a large steel box girder bridge,the significant risks in the integral jacking process were analyzed,and the control measures and implementation planswere introduced.Combined with the monitoring results in the construction process,the construction control effectswere proved. Some guidance for similar jacking projects could be referred totheseresearch results.