改变合龙方式对连续刚构桥施工监控的影响

Impacts on Construction Monitoring and Control of Continuous Rigid Structural Bridge by Closure Style Change

连续刚构桥的合龙是其施工控制的关键,在实际施工中,由于现场的种种因素而改变合龙方式,将对施工监控工作带来较大的影响。文章以2座大跨径连续刚构桥为例,分析了改变合龙方式对挠度和应力的影响,提出相关建议,为该类桥梁的施工及监控量测工作提供参考。

Closure of the continuous rigid structural bridge is critical in construction control. In construction,the closure mode has to be changed because of restriction of site factors. This change largely impacts the construction control and monitoring . Two continuous rigid structural bridges with large spans are exemplified in the paper to analyze impacts on deflection and stress by the closure mode change. Accordingly,comments are provided so as to be referred to construction control and monitoring of similar bridges.