Steel bridge three-dimensional intersectional welding seam structure and construction method thereof

A construction method and steel structure technology, applied in the direction of manufacturing tools, welding equipment, welding equipment, etc., can solve the problems of weak anti-fatigue ability, cracking failure of welding hole sealing material, sudden change of section, etc., and achieve small maintenance workload , Conducive to structural force safety and durability, force reliable effect

Active Publication Date: 2017-05-17
CHINA MAJOR BRIDGE ENERGINEERING
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of sudden change in the section of the traditional three-dimensional cross w

Method used

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  • Steel bridge three-dimensional intersectional welding seam structure and construction method thereof
  • Steel bridge three-dimensional intersectional welding seam structure and construction method thereof
  • Steel bridge three-dimensional intersectional welding seam structure and construction method thereof

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Embodiment Construction

[0022] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but it does not constitute a limitation of the present invention, and is only used as an example. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0023] combine figure 1 , figure 2 , image 3 It can be seen that a steel bridge three-dimensional cross weld structure includes webs and flanges welded perpendicularly to each other, and is characterized in that: the side of the first web 201 of the web and the bottom surface of the first flange 101 of the flange are vertically The first steel structure unit is formed by welding, the side of the second web 202 of the web is longitudinally welded with the bottom surface of the second web 102 of the wing to form a second steel structure unit, the first web 201 and the second web The side edge of the plate 202 is respecti...

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Abstract

The invention discloses a steel bridge three-dimensional intersectional welding seam structure and a construction method thereof. The steel bridge three-dimensional intersectional welding seam structure comprises perpendicularly welded webs and wing plates. The side edge of the first web of the webs is longitudinally welded to the bottom face of the first wing plate of the wing plates to form a first steel structural unit. The side edge of the second web of the webs is longitudinally welded to the bottom face of the second wing plate of the wing plates to form a second steel structural unit. The lateral edges of the first web and the second web are separately provided with a first opening and a second opening through cutting. The first steel structural unit is welded to the second steel structural unit in a butt joint mode. The first opening is in butt joint with the second opening to form an over weld hole, and an opening is formed in the portion, at a butt-jointed seam of the first wing plate and the second wing plate, of the over weld hole. One sides or the two sides of the portions, at the over weld hole, of the webs are covered with reinforcing plates. The outer edges of the reinforcing plates are continuously welded to the webs and the wing plates correspondingly. By adoption of the steel bridge three-dimensional intersectional welding seam structure and the construction method thereof, the problems that according to a traditional three-dimensional intersectional welding seam structure, the section suddenly changes, the anti-fatigue effect is weak, and over weld hole blocking materials crack and fail are solved.

Description

technical field [0001] The invention relates to the technical field of bridge welding, in particular to a steel bridge three-dimensional intersection weld structure and a construction method thereof. Background technique [0002] In the design of steel structure bridges, the flanges and webs of steel members are often butt welded at the same section, and the flange butt welds, web butt welds, and fillet welds between webs and flanges form a three-dimensional intersection. Meet at a point on the docking surface. The intersection and overlap of multiple welds will cause the accumulation of welding residual stress and welding defects. It is necessary to adopt reasonable structural layout and welding construction methods to improve the stress safety of butt welds of components. Under the action of bending moment, the flange of the steel member bears most of the normal stress caused by the bending moment, and the web mainly bears the shear stress. Combined with the stress chara...

Claims

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Application Information

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IPC IPC(8): B23K33/00B23K31/02B23K37/00
CPCB23K31/02B23K33/00B23K37/00
Inventor 张晓勇张成东徐科英邱远喜肖海珠徐恭义梅大鹏黄小军
Owner CHINA MAJOR BRIDGE ENERGINEERING
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