Research on Key Technologies for Installation and Construction of Steel Grid Beams of Concrete Filled Steel Tube Arch Bridges
Taking the installation and construction of steel structure grid beams on the bridge deck system of Jianwei Minjiang grand bridge as an example,the key technologies for the installation and construction of steel structure grid beams on the concrete filled steel tube arch bridges are introduced.The grid beam of the concrete filled steel tube arch bridge is assembled and formed by the bolted and welded connection of the longitudinal and transverse beams of the steel structure,and combined with the precast reinforced concrete bridge deck through the cast-in-place reinforced concrete to form a complete load-bearing structure.As the key structure for the bridge deck system to bear and transmit forces,steel structure grid beams are installed by using the cable hoisting construction method,as well as symmetrical loading,bolted and welded connection,and dual control of cable force of suspension rod and bridge deck alignment and so on.The monitoring result shows that,the quality control effect of steel grid beam installation and construction is good.
万方数据
维普
