多跨刚构—连续体系桥梁合拢顺序及解除临时约束时间相关问题讨论

The Discussion on Closure Order of Multi-span Rigid Frame Continuous Bridge and Related Issues of Releasing Temporary Confinement Time

多跨刚构—连续体系桥梁合拢施工是桥梁施工最关键的一个阶段,其合拢顺序与体系转换、解除临时约束时间极大地影响着成桥后的内力和线形变化,在设计阶段及施工前,如何合理地安排多跨桥梁的合拢顺序及解除临时约束的时间有待讨论。结合工程实际,对多跨桥梁解除临时约束时间对结构的影响进行讨论,分析各个顺序的优劣,以供工程参考。

Combined with the engineering practice, the paper discussed the influence of muhi-span bridge releasing the temporary confinement time on structure, analyzed the advantage and disadvantage of each sequence for reference.