钢横梁上跨线架设混凝土T梁施工

T-shaped Concrete Beam Erection on Steel Beam

石太客运专线太平河特大桥与既有线立体交叉,两线夹角16°48',桥位空间上构成既有线、接触网、钢横梁、混凝土T梁、架桥机模式,成为安全控制重点。封锁点内既要完成架梁施工,又要确保各部分安全,施工难度较大。结合施工实际,讨论了施工方案,针对施工难点制定了应急预案和应急措施。

Taiping River Bridge of Shijiazhuang-Tai yuan passenger special railway and existing railway are grade separation with 16°48'.Then,as an safety control emphases,bridge space is composed with existing railway,catenary,steel beam,T-shaped concrete beam and bridge machine.The construction is difficult as engineers must keep safety when erecting the beam.Construction scheme is discussed combining with construction conditions.Emergency plan and countermeasures are made according to construction difficulties.