In the construction of the first section of Qingdao new airport high-speed connection line project, the welding seam of simply supported reinforced-concrete composite girder steel box girder is thicker and the number ...In the construction of the first section of Qingdao new airport high-speed connection line project, the welding seam of simply supported reinforced-concrete composite girder steel box girder is thicker and the number of weld penetration weld is relatively large;the weld deformation and residual stress are larger and the welding has higher environmental requirements. How to control the weld quality is the key and difficult point of this project. Based on the exploration of the welding process in the early stage, this paper summarizes some key points of quality control of high quality welding, so as to guide the welding construction of the remaining steel box girder in this project.展开更多
文摘In the construction of the first section of Qingdao new airport high-speed connection line project, the welding seam of simply supported reinforced-concrete composite girder steel box girder is thicker and the number of weld penetration weld is relatively large;the weld deformation and residual stress are larger and the welding has higher environmental requirements. How to control the weld quality is the key and difficult point of this project. Based on the exploration of the welding process in the early stage, this paper summarizes some key points of quality control of high quality welding, so as to guide the welding construction of the remaining steel box girder in this project.
