Large Span Steel Truss Beam Transverse Construction Technology Research

Form of steel truss girder bridge structure as this stage, beyond capacity, suitable for industrialized manufacture, transport, installation speed, steel components are easy to repair and replace features, are widely used in the construction of road and railway bridges. Steel trussed beam due to its high strength and high elastic modulus of materials and components relatively light, lightness of construction of prestressed concrete bridge and convenience, its method of construction can be divided into: construction method of traveling crane, lifting construction method, floating crane construction method, cantilever construction method, erection by longitudinal pulling method, method of fishing, construction method of cable crane, floating method, traverse construction method. Erection of steel truss girder of the actual process, simply use a construction method that is described in the above is rare, most of the steel truss girder erection at the same time using2or at least2per cent of the construction method. And in more realistic on the construction process of innovation and improvement, and social and economic benefits significantly.This research is based on the Lanyu railway Xinjingkou Jialing River truck line special bridge engineering across both line128m steel truss beam erection, using software on steel truss beam and the temporary support pier for entity built die, according to calculation results, in bridge left on hole erection assembled bracket and the horizontal ramp beam, side bit assembled steel truss beam, cross moved to bridge bit of method solution across both railway construction venues by limited of challenges.The smooth implementation of the project, spanning existing railway steel truss girder construction provide guidance and information.