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Steel pipe arch flange plate stiffening plate, flange plate and mounting method

A technology of arch flange and installation method, which is applied in the direction of arch bridges, metal processing equipment, erection/assembly bridges, etc., which can solve the difficulty of parts management that increases manufacturing difficulty, the flange cannot form standard parts, and increases construction difficulty and construction cost and other issues to achieve the effect of reducing processing difficulty and inspection and acceptance difficulty, saving construction period and cost, and reducing workload

Pending Publication Date: 2020-06-19
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to: during the manufacture of the flange used for the connection of the existing steel pipe arch bridge arch rib in the prior art, the flange contact surface is processed after welding, and the flange cannot form a standard part, which increases the difficulty of manufacture and the parts. The difficulty of management requires a large number of tooling mold tubes, which are difficult to simulate accurately, which increases the difficulty of construction and the problem of construction cost. A steel pipe arch flange stiffener, flange and installation method are provided

Method used

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  • Steel pipe arch flange plate stiffening plate, flange plate and mounting method
  • Steel pipe arch flange plate stiffening plate, flange plate and mounting method
  • Steel pipe arch flange plate stiffening plate, flange plate and mounting method

Examples

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Effect test

Embodiment 1

[0051] A steel pipe arch flange stiffener according to the present invention includes a stiffener body 1 .

[0052] like figure 1 and 3 As shown, the stiffened plate body 1 includes a first connection surface 11 and a second connection surface 12, the first connection surface 11 is used to be welded to the inner wall of the arch rib steel pipe 4, and the second connection surface 12 is used to be connected to Flange ring 2 of the flange.

[0053] like figure 1 and 2 As shown, grooves 111 are respectively provided on both sides along the length direction of the first connecting surface 11, and the first connecting surface 11 between the two grooves 111 includes a blunt edge 112, and the blunt edge 112 The length is 1mm-3mm, preferably 2mm in this embodiment.

[0054] Using a steel pipe arch flange stiffener according to the present invention, the contact position between the flange stiffener and the main arch ring generally does not exceed 500mm, and the space distortion i...

Embodiment 2

[0056] like Figure 1-3 As shown, a steel pipe arch flange according to the present invention includes a flange ring 2, and the flange ring 2 is connected with several steel pipe arch flange stiffeners as described in Embodiment 1, and all the stiffeners The board body 1 is evenly distributed.

[0057] like image 3 As shown, for the paired two flanges, the inner ring of the flange ring 2 of one of the flanges is welded with an inner liner 3, and the inner liner 3 is connected to the corresponding flange The stiffener is welded, and the inner liner 3 is adapted to the inner ring of the other flange, which is used for butt positioning between two paired flanges when the arch ribs are butted.

[0058] Using a steel pipe arch flange according to the present invention, by setting the bevel 111 on the flange stiffening plate, welding the back side of the flange stiffening plate with root cleaning and penetration welding to offset the spatial distortion of the steel pipe arch brid...

Embodiment 3

[0060] like Figure 1-8 As shown, a method for installing a steel pipe arch flange as described in any one of the above in the present invention includes the following steps:

[0061] A. The material enters the site, and the material is sampled and re-inspected;

[0062] B. When blanking the stiffener body 1 of the flange, set the groove 111 on the first connection surface 11, and after blanking, adjust the size of the stiffener body 1 and the groove 111 quality checks;

[0063] C. Assemble the flange ring 2 and the stiffener body 1 on the tire frame to form the flange, and check the size and verticality of the flange;

[0064] D. Install the flange ring 2 and the stiffening plate body 1 on the tire frame for welding, and perform cleaning and flaw detection after the flange ring 2 and the stiffening plate body 1 are welded;

[0065] E. After the assembly and welding is completed, the contact surface of the flange ring 2 is machined, and the flatness inspection is carried ou...

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Abstract

The invention discloses a steel pipe arch flange plate stiffening plate, a flange plate and a mounting method. The flange plate stiffening plate comprises a stiffening plate body, wherein the stiffening plate body comprises a first connecting surface and a second connecting surface, the first connecting surface is used for being welded to an inner wall of an arch rib steel pipe, the second connecting surface is used for being connected with a flange ring of a flange plate, and grooves are formed in two sides in the length direction of the first connecting surface respectively. The steel pipe arch flange stiffening plate is advantaged in that a contact part of the flange plate stiffening plate and a main arch ring generally does not exceed 500mm, the space distortion is converted into the welding seam gap difference which is less than 1mm and is very small, so the change caused by space distortion of the steel pipe arch bridge can be counteracted by arranging the grooves on the flange plate stiffening plate and performing single-side welding and reverse-side back gouging penetration welding on the flange plate stiffening plate, the flange plate can be manufactured into a standard part, machining difficulty and inspection and acceptance difficulty are reduced, part and component management in the machining process is facilitated, mixed use of the flange plate in the constructionprocess is avoided, workloads are reduced, and a construction period and cost are saved.

Description

technical field [0001] The invention relates to the field of arch bridges, in particular to a steel pipe arch flange stiffening plate, a flange and an installation method. Background technique [0002] The concrete-filled steel tube arch bridge adopts the method of prefabrication first and then installation. The main arch ring is divided into several segments for prefabrication, and then pre-assembled. The segments are connected by flanges. For cantilever installation, the connection between the flanges of the main arch rib section joints must have the same strength as the steel pipe arch rib chord. One of the important indicators for the installation of the main arch ring is the tightness of the contact surface of the flange. If the tightness is not good, it will affect the linearity of the bridge, reduce the service life of the steel pipe arch, and leave a safety hazard. [0003] At present, there are two kinds of flange manufacturing methods that are widely used: [000...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D21/00E01D4/00B23K31/02
CPCB23K31/02E01D4/00E01D19/00E01D21/00
Inventor 罗小斌吴刚刚秦大燕刘兴焱魏华王彬鹏朱俊颖
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD