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Large section steel box beam amplitude-selection matching structure and manufacturing method

A matching structure and steel box girder technology, which is applied in the field of steel bridge manufacturing, can solve problems such as the inability to install beams, increase the transportation cost of steel box girders, and difficulty in adapting to changes in the width of steel box girders, and achieve the effect of ensuring manufacturing quality and accuracy

Pending Publication Date: 2018-03-13
CHINA RAILWAY BAOJI BRIDGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, steel box girders were mostly single-box multi-chamber structures of equal width, all of which used "plate unit → small segment steel girder → large segment steel girder", which was difficult to adapt to the requirements of steel box girder width changes. At the same time, the overall production plan would lead to The beam between the two steel box girders cannot be installed, and the excessive weight will also greatly increase the transportation cost of the steel box girder

Method used

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  • Large section steel box beam amplitude-selection matching structure and manufacturing method
  • Large section steel box beam amplitude-selection matching structure and manufacturing method
  • Large section steel box beam amplitude-selection matching structure and manufacturing method

Examples

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Embodiment 1

[0014] Embodiment 1: with reference to attached figure 1 . A large-segment steel box girder framing matching structure, the diagonal braces 1-2 of the steel box girder general tire frame are designed as a group of 3, and the diagonal braces 1-2 in each group are connected by tie rods 1-3. Integral diagonal brace frame, the lower ends of the three diagonal braces at the lower ends of the two sets of integral diagonal brace frames are respectively connected to the crossbeam 1-1, and the crossbeam at the bottom of the diagonal brace 1-2 is provided with an anti-overturning sliding device (anti-overturning sliding device It belongs to the prior art in the steel structure, so it will not be described in detail), and at the same time, a pin locking device is provided at the bottom of the brace (the pin locking device is a common temporary fixing method, so it will not be described here). The width of the steel box girder is to push and slide the diagonal bracing of the overall tire...

Embodiment 2

[0015] Embodiment 2: on the basis of embodiment 1, with reference to accompanying drawing 2 and 3. diagram 2-1 is a schematic diagram of the left half of the steel box girder connecting beam, Figure 2-2 Schematic diagram of temporary fittings for connecting beams; Figure 3-1 is a schematic diagram of a detached double box-section steel box girder (without connecting beams installed), Figure 3-2 Schematic diagram of matching fabrication of large segment steel box girders, Figure 3-3 It is a half-width large-segment steel box girder.

[0016] Step 1: Before the board unit is placed on the tire frame, firstly verify the part number of the board unit and check the external dimensions to ensure that the assembly position of the board unit is correct.

[0017] Step 2: Adjust the width of the total tire frame according to the width of the steel box girder, which is "the width of the steel box girder + δ" ('δ' is between two large section steel girders to ensure the assembly s...

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Abstract

The invention relates to a large section steel box beam amplitude-selection matching structure and a manufacturing method. The large section steel box beam amplitude-selection matching structure and the manufacturing method can adapt to the width change of a steel box beam and can also guarantee smooth conducting of total assembly of the steel box beam and the manufacturing quality. Inclined struts of a steel box beam total assembly jig frame are designed to be that three of the inclined struts serve as a set, and the inclined struts in each set are connected to be an overall inclined strut frame through tie rods. The lower ends of every three inclined struts at the lower ends of the two corresponding inclined strut frames are connected with cross beams correspondingly. Anti-overturning sliding devices are arranged on the positions, at the bottoms of the inclined struts, of the cross beams, and meanwhile pin locking devices are arranged at the bottoms of the inclined struts. The largesection steel box beam amplitude-selection matching structure and the manufacturing method have the advantages that a bran-new large section steel box beam amplitude-selection matching manufacturing technology is formed and can meet the manufacturing requirement of the variable-width steel box beam, the precision of matching manufacturing of the steel box beam is guaranteed, and the manufacturingquality of the steel box beam can also be guaranteed.

Description

technical field [0001] The invention relates to a frame-matching structure and a manufacturing method of a large-segment steel box girder, which can adapt to changes in the width of the steel box girder and ensure the smooth assembly of the steel box girder and the manufacturing quality, and belongs to the field of steel bridge manufacturing. Background technique [0002] At present, super-large projects have promoted the leap-forward development of my country's steel bridge manufacturing. The steel box girder of the bridge channel bridge adopts a separate double box section, and the two steel box girders are connected into a whole by a beam. Due to the structural requirements, the steel box girder is designed to be widened. The standard section length of steel girder is 12.5m. According to the hoisting plan, it needs to be fabricated as a large-segment steel box girder on the general assembly site, with a length of more than 60m and a weight of about 1200t. In the past, ste...

Claims

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Application Information

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IPC IPC(8): E01D2/04E01D21/00
CPCE01D2/04E01D21/00
Inventor 刘治国李军平车平王志翔王晓辉马增岗刘雷薛宏强
Owner CHINA RAILWAY BAOJI BRIDGE GRP
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