Method for manufacturing steel structure bridge T-shaped longitudinal rib braces

Abstract

The invention relates to a method for manufacturing steel structure bridge T-shaped longitudinal rib braces. The method includes the steps that lofting is conducted on the T-shaped longitudinal rib braces according to the design of a steel structure bridge, the size of a T-shaped longitudinal rib brace web and the size of wing plates are determined, a numerical control plasma cutting machine is used for blanking a workpiece web and wing plates of a formed H-shaped component according to the design that the H-shaped component is formed by manufacturing the two symmetric T-shaped longitudinal rib braces, the length and the width of the wing plates of the H-shaped component are equal to those of the T-shaped longitudinal rib brace web, the width of the web is the sum of two times the width of the T-shaped longitudinal rib brace web and the width of a cutting seam, and lock point cutting is conducted on the longitudinal center line of the web. H-shaped components are assembled through an assembling machine, and the multiple H-shaped components are arranged on a reverse deformation jig frame to be welded. A flange correction machine is used for correcting the H-shaped components, and finally a lock point of each web is cut so that the two T-shaped longitudinal rib braces can be obtained. According to the method for manufacturing the steel structure bridge T-shaped longitudinal rib braces, the T-shaped longitudinal rib braces are manufactured in a mechanical and batched mode, the production efficiency is improved, the manufacturing precision and quality are ensured, and the promotional value is achieved.

Description

technical field [0001] The invention relates to a manufacturing method for T-shaped longitudinal rib stiffening of steel structure bridges. The manufacturing method can improve the manufacturing quality and efficiency of T-shaped longitudinal rib stiffening of steel structure bridges. It belongs to the technical field of bridge manufacturing. Background technique [0002] T-shaped longitudinal rib stiffening is one of the main stiffening forms of steel structure bridges. It is composed of web and flange, and its cross-sectional form is T-shaped. Generally, the length of the T-shaped longitudinal rib stiffener is 8-12m, the width of the flange is 100-140mm, the width of the web is 100-200mm, and the thickness of the web and flange is 10-16mm; After the web and wing parts are blanked, they are assembled on a flat ground or a construction platform, and braces are used to prevent welding deformation, and they are welded. After welding, flame correction is used to correct the de...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low efficiency, poor quality and high cost of T-shaped longitudinal rib stiffening due to the traditional production method, and provide a kind of high production efficiency, small deformation, good quality, semi-automatic welding, mechanization and batch production Manufacture method of T-shaped longitudinal rib stiffening of manufactured steel structure bridge

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