50米钢箱梁加工制造施工技术研究

成都天府机场高速公路50m钢箱梁施工,为克服长大件钢箱梁的制架梁难点,由中铁山桥在成都基地工厂先制造板单元,其次拼装梁段,经大件运输28km至施工现场,然后现场吊装架设,本项目钢梁为工字型结构,每个梁段由底板、腹板、顶板、横联及挑臂组成.梁段制造,每桥钢板梁实际拼装为各个节段全部在同一胎模架上进行预拼装,按照由中间向两...

Research on Manufacturing and Construction Technology of 50m Steel Box Girder

In the construction of 50m steel box girder of Chengdu Tianfu Airport Expressway,in order to overcome the difficulty of making long steel box girder,China Tieshan Bridge first manufactured the plate unit in the Chengdu base factory,and then assembled the beam section,and transported the large piece for 28km.The steel beam in this project is an I-shaped structure,and each beam section is composed of a bottom plate,a web plate,a top plate,a horizontal connection and a cantilever arm.In the manufacture of beam sections,the actual assembly of each bridge steel plate girder is that each section is pre-assembled on the same tire mold frame,and the assembly is carried out in sequence from the middle to the two sides,and the size error is controlled by the form of temporary matching between the blocks.And the overall linearity,to ensure the quality.