Orthotropic steel bridge deck U-rib K-type connector composite welding method
An orthotropic and composite welding technology, applied in the field of bridge manufacturing, can solve the problems that U ribs cannot achieve full penetration welding, etc., and achieve the effects of reducing welding deformation, small welding volume, and beautiful weld appearance
Active Publication Date: 2019-04-05
中铁宝桥(扬州)有限公司 +1
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Problems solved by technology
[0004] Purpose of the invention: the present invention provides a method for full penetration welding of steel bridge U rib plates, which solves the problem that current U ribs cannot achieve full penetration welding
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Embodiment 1
[0022] Embodiment 1: as Figure 5-6 As shown, the straight edge of the U-rib is machined with the straight milling tool 4 to ensure the straightness of the U-rib, and then the two long sides of the U-rib 1 are processed with a milling cutter 5. The processed U-rib The bevel of the plate is as figure 1 As shown, the U rib groove is divided into inner groove 11, outer groove 12 and blunt edge 13. In this embodiment, when the thickness h of the U rib is 8mm, in order to ensure that the welding wire of the inner welding machine can be aligned with the root of the weld, And provide 0.5-1mm welding penetration, process inner groove depth h1 to 2mm, height d1 to 4mm, and inner groove processing angle to 62°; in order to ensure that the weld seam is well formed after the outer single-pass welding, at the same time, the 8mm U rib can be fully formed For penetration, the outer groove depth h2 is 5mm, the height d2 is 5mm, the outer groove processing angle is 45°, the blunt edge size p ...
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Abstract
The invention discloses an orthotropic steel bridge deck U-rib K-type connector composite welding method. The orthotropic steel bridge deck U-rib K-type connector composite welding method comprises the following steps that U-rib groove machining is performed, specifically, grooves in two long side edges of a U-rib are machined to enable the U-rib to be provided with an inner side groove and an outer side groove, and compression is performed after groove machining; the U-rib is assembled and located on a bridge deck, and an assembling gap is reserved between the U-rib and the deck; the inner side groove of the U-rib adopts gas shielded welding; an orthotropic plate is placed on a reverse deformation moulding bed, a compressing device is started to perform clamping fixing and reverse deformation arch camber on the bridge deck, and the reverse deformation moulding bed is overturned after compressing; the outer side groove of the U-rib adopts union melt welding; and the reverse deformationmoulding bed is overturned to complete the welding of an outer side groove weld seam on the other side edge of the U-rib. The orthotropic steel bridge deck U-rib K-type connector composite welding method is concise in groove machining, the U-rib and the deck weld seam can reach 100% full penetration without back chipping, and the orthotropic steel bridge deck U-rib K-type connector composite welding method has the advantages such as the welding forming is attractive, the weld seam is reliable in performance, the quality of the weld seam is stable, welding deformation is small and the production efficiency is high.
Description
technical field [0001] The invention relates to the field of bridge manufacturing, in particular to a compound welding method for U-rib K-shaped joints of orthotropic steel bridge decks in the field of bridge manufacturing. Background technique [0002] With the widespread application of orthotropic steel decks, the fatigue problems of long-span, heavy-duty steel bridges during operation have attracted widespread attention in the industry. At present, the focus of research and development is the fatigue problem of orthotropic steel deck decks. To solve this problem, one of the methods adopted is: U-ribs and steel deck welds are designed with full penetration to prolong the fatigue life of orthotropic steel decks. fatigue life. [0003] Steel bridge orthotropic plates are used in many designs due to their unique characteristics of high rigidity, light weight, and convenient manufacturing and installation. The U-rib weld extension of a steel bridge orthotropic plate ranges fr...
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IPC IPC(8): B23K9/173B23K9/18B23K9/235
CPCB23K9/173B23K9/18B23K9/235
Inventor 李彦国朱新华刘志刚李硕张永利袁俊吴江波车平杜伟张海涛杨亮杨鸿涛
Owner 中铁宝桥(扬州)有限公司