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A method and device for controlling the matching accuracy of multi-interface beams and towers

A precision control, multi-interface technology, applied to auxiliary devices, bridges, welding equipment, etc., can solve problems such as abnormal distortion of the tower column, large stress on the wall of the cylinder, deformation of the tower column, etc., to improve the accuracy of the installation position and reduce the side wall The degree of distortion and the effect of ensuring safe use

Active Publication Date: 2022-07-15
CHINA RAILWAY JIUJIANG BRIDGE ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in order to ensure sufficient mechanical strength, the butt joint between the tower column and the steel beam needs to be fully welded on all the contact parts of the two, so it is also accompanied by a large welding residual stress. If effective control measures are not applied, it will inevitably Lead to local deformation or cracking of the tower column, reducing the bearing capacity
Although the existing technology has the method of spot welding flower racks between the tower columns as a temporary control measure, due to the hollow box structure of the tower column itself, it will still cause relatively large stress deformation to its own tube wall after welding; and Due to the overall frame structure of the tower column and the flower stand, when the welding deformation generated by the tower column at one end is transmitted to the adjacent tower column through the flower stand, the abnormal distortion of the adjacent tower column will also be caused due to the shear lag effect, which will affect the after-effect. Matching form of sequentially docked towers

Method used

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  • A method and device for controlling the matching accuracy of multi-interface beams and towers
  • A method and device for controlling the matching accuracy of multi-interface beams and towers
  • A method and device for controlling the matching accuracy of multi-interface beams and towers

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Experimental program
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Embodiment 1

[0032] like Figure 1-2 As shown in the figure, a control device for the matching accuracy of multi-interface beams and towers includes two steel beams 1, a top plate 2, four tower columns 3, four outer flower racks 4, a core tube 5, four inner flower racks 6, four shears Force cylinder 7 , a plurality of transverse arms 8 , and four positioning frames 9 . Wherein, the steel beam 1 and the top plate 2 are part of the steel box girder of the cable-stayed bridge, the two steel beams 1 are located under the top plate 2, and the beam body of each steel beam 1 is provided with two ports 1a facing upward A boss is formed through the top plate 2; the end face of each of the ports 1a is inclined, and the towers 3 are attached by welding, so that the four towers 3 are distributed in four corners; between each tower 3 All are provided with a described outer flower stand 4 by spot welding; the center of the four towers 3 is provided with the described core tube 5, the core tube 5 is a h...

Embodiment 2

[0050] The difference between this embodiment and the first embodiment is that the design spacing of the contacts 4 a is limited, so that it is close to the golden section ratio of the width of the tower column 3 .

[0051] like Figure 4 As shown, the outer flower stand 4 and the inner flower stand 6 are rectangular truss welding members, and the four contacts 4a at their ends are attached to the tower column 3, and each two laterally adjacent described contacts 4a The distance between them is X, and the side width of the tower column 3 on which the contacts 4a are installed is L. The distance between the contacts 4a is designed so that X:L=0.618. In addition, the distance between each two laterally adjacent transverse arms 8 is X', and the lateral width of the tower 3 on which the transverse arms 8 are installed is L'. By designing the distance between the transverse arms 8, X':L'= 0.618.

[0052] The position setting setting of the contact 4a in this embodiment is tested ...

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Abstract

A method and device for controlling the matching accuracy of multi-interface beam towers, wherein two steel main beams are located under the top plate, each steel main beam is provided with two tower beam combining ports, the ports are connected with the tower columns by welding, and each tower column is connected. There is an outer flower stand by spot welding, and a core tube is arranged in the center. Spot-welded connections are made with multiple cross arms. The inner and outer parts of the tower column are respectively set with shear tube, core tube, and inner and outer flower racks to form a composite frame-tube structure in which the inner frame tube of the tower column and the outer frame tube cooperate with each other, and the rigid fixed structure of the inner and outer shear walls is formed. Resist the distortion caused by the shear force and the shear force hysteresis effect caused by the welding stress on the side wall of the tower column, so as to maintain the stability of the tower column shape during the full penetration welding process, and then complete the stress relief operation through ultrasonic aging, effectively improving the The installation position accuracy of the tower column on the steel beam.

Description

technical field [0001] The invention belongs to the technical field of bridge manufacturing, and in particular relates to a method and a device for controlling the matching accuracy of multi-interface beams and towers. Background technique [0002] The Zhuji Intercity HJZQ-1 Standard Jinhai Bridge spans the Modaomen waterway. The main bridge is built on the same floor as the highway and the railway. The bridge span is arranged as (58.5+116+3×340+116+58.5)m cantilever type Steel box girder cable-stayed bridge. The total length is 1371.8m, the railway is arranged in the center of the bridge deck, the left and right widths of the highway are arranged on both sides of the railway, the total width of the bridge deck is 49.6m, and the bottom width is 17.6m. "The horizontal slope, the bottom plate is horizontal, and the bridge direction is ±5‰ longitudinal slope. The steel main beam in the 0' section is the consolidation section of the tower beam, and there are 4 tower columns in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D19/14B23K31/02B23K37/00E01D101/30
CPCE01D21/00E01D19/14B23K31/02B23K37/00E01D2101/30
Inventor 徐慰玉闫冬侠黄云新张胤薛久红朱东明黄勇梁辉许龙发韦文俊杨森秦新新
Owner CHINA RAILWAY JIUJIANG BRIDGE ENG