复杂工况下大跨径变截面现浇箱梁支架设计

Design of Falsework for Cast-in-place Box Girder with Large Span Variable Cross Section under Complicated Conditions

现浇箱梁是桥梁施工中危险性较大的分项工程[1],现浇支架的合理设计是保证施工安全的关键。结合洪湾枢纽互通跨洪湾涌现浇箱梁跨径大、截面复杂的实际情况,采用了一种钢管贝雷与碗扣支架组合的满堂式支架进行施工,并对支架进行了分析验算,根据分析验算结果提出了几点施工建议。

Cast-in-place box girder is a dangerous project in bridge construction, reasonable design of the support for that is the key to ensure construction safety.Being combined with the actual situation of the cast-in-place box girder with large span and variable cross section of Hongwan Highway Interchange across the Hongwan River, a full-frame support with steel pipe bailey and cup lock steel tubular scaffolding has beenused for construction, which is also analyzed and checked.According to the analysis results, several construction suggestions have been put forward.