Steel structure workshop as a new type of assembly building, because of its outstanding advantages, has been more and more people any. And steel structure plant, cause the use is not the same, some need to install crane, some do not need. The steel structure beam of the vehicle shall meet the following requirements:
(1) Butt welds of upper and lower flange plates are generally required to be butt welded with straight seam of automatic welding, and are required to be welded thoroughly. When the butt weld of the lower flange is within 1/3 of the span, the inclined joint of 45O ~ 55O should be used for butt joint.
(2) the flange or web splicing joint should not be located in the same section, should try to stagger more than 200mm, joint location should be located in the span of about 1/3 to 1/4 beam from the support; For the butt weld of the horizontal and horizontal beam direction of the web, T cross can also be used for cross, T cross, the distance of the crossing point shall not be less than 200mm; When the splicing weld intersects with the stiffener, the stiffener and web joint fillet weld should be interrupted, and the distance between its end and the splicing weld is about 50mm.
(3) the arc starting plate chosen for butt weld must be the same as the material and thickness of the base metal, and the form of the section should be the same as the base metal. For the connection between crane beam and brake structure, heavy duty crane beam should be connected with high strength bolt, while light and intermediate crane beam can be welded on site. Suspension equipment parts shall not be welded on the tension flanges of the steel structure crane beam, and the connection between the tension flanges of the crane beam and the horizontal support shall be bolted and shall not be welded.
