现浇连续箱梁合拢段施工技术

Construction Technique of Cast-in-Place Continuous Box Girder in Closure Segment

随着大跨径现浇连续箱梁桥成为跨越大江、大河、山谷的主选桥梁形式之一,现浇连续箱梁主要重难点部分合拢段的混凝土温度控制是非常重要的。着重介绍了安家山河大桥施工悬臂合拢段的施工前准备及施工中合拢段的施工技术。

Long-span cast-in-place continuous box girder has become one of the main forms of the bridges across the river and valley. So, the concrete temperature control is very important to the closure segment, which is the important and difficult part of the cast-in-place continuous box girder. This paper specially introduces the preparation and construction technique of the cantilever cantalever closure segment in the Anjia Shanhe bridge.