A method for manufacturing a combined steel component of a parallelogram side longitudinal beam and an inspection road

Abstract

The invention discloses a method for manufacturing a combined steel component of a parallelogram side longitudinal beam and an inspection road, which includes manufacturing a side longitudinal beam top plate, and after the side longitudinal beam top plate is manufactured, it is widened with the inspection road top plate to form a roof assembly; the roof assembly is turned over Finally, the longitudinal ribs are welded on the bottom surface of the roof assembly to form a roof unit, and the first partition, the web unit, the web of the beam joint, the inspection road partition and the inspection road side baffle are installed on the roof unit; the bottom plate unit is installed to form Box-shaped member; drill connecting holes on the box-shaped member; install the inclined rod joint plate on the bottom surface of the box-shaped member, and install the inclined-stayed plate unit on the top surface of the box-shaped member. The manufacturing method of the composite steel member of the side longitudinal beam and the maintenance road according to the present invention utilizes the characteristic of the high rigidity of the parallelogram side longitudinal beam structure, and the maintenance road structure is manufactured synchronously by relying on the side longitudinal beam, which reduces the difficulty of making the maintenance road and greatly The assembly efficiency is greatly improved, the deformation of components is reduced, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of side longitudinal girders in double-layer steel truss girder bridges with long-span public-rail dual-purpose, in particular to a method for manufacturing a parallelogram side longitudinal girder and a maintenance track composite steel component. Background technique [0002] The upper deck of the double-layer steel truss girder cable-stayed bridge is the road deck, and the side longitudinal girder roof is a part of the road deck structure, participating in the bridge deck force, while the side longitudinal girder middle roof and the cable-stayed slab unit jointly bear the cable tension The role of the cable tension; the bottom plate is provided with a diagonal tie rod connecting plate, which is connected with the lower chord through the diagonal rod, so that the cross section of the truss beam forms an "inverted trapezoidal" frame structure; the maintenance road structure is set outside the truss to provide a walkwa...

AI Technical Summary

Problems solved by technology

[0004] Since the access road unit is a long and slender part, the roof is greatly affected by thermal cutting and welding deformation. It can be predicted that the bending deformation of the plate will be very large, which greatly exceeds the normal manufacturing deformation range. In the existing technology, the deformation of the inspection road unit is difficult to control, Problems such as difficulty in rectification cannot meet the requirements of mass production, especially under the condition of tight construction schedule, the accuracy and quality control of components is very difficult

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