刚构-连续组合体系梁桥边跨合龙方案

Side span closure scheme of girder bridge with rigid frame-continuous combination system

以东路高架桥边跨合龙段施工工程为背景,采用平面杆系程序对边跨合龙方案由落地支架施工更改为吊架施工的桥梁结构进行了对比分析.研究结果表明,采用不同的边跨合龙方案对主梁在施工阶段、成桥阶段的受力状态影响较小.并对当过渡墩较高或支架需搭设在水中时,采用吊架施工的可行性进行了探讨.

Based on side span closure construction of Donglu Viaduct Bridge as project background,this paper comparatively analyzed the bridge structure whose side span closure scheme has been changed from consol supports to hanger.Results showed that mechanical behaviors of main girder rarely changes in the construction stage and the orperation stage.The construction feasibility has been discussed in the circumstances that transition pier is high or consol supports must be erected in water.