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Corrugated steel web combined box girder, suspended splicing lossless positioning device and construction method

A technology of corrugated steel webs and positioning devices, which is applied in bridges, bridge construction, bridge parts, etc., can solve the problems of corrugated steel webs that are difficult to achieve non-destructive and accurate positioning, so as to improve the adjustment range, avoid damage, and improve quality and safety sexual effect

Active Publication Date: 2021-11-05
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a corrugated steel web composite box girder, a cantilevered non-destructive positioning device and a construction method, so as to solve the problem of waveforms in the construction process of the corrugated steel web composite box girder bridge in the prior art. The technical problem that it is difficult to achieve non-destructive and accurate positioning of steel webs

Method used

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  • Corrugated steel web combined box girder, suspended splicing lossless positioning device and construction method
  • Corrugated steel web combined box girder, suspended splicing lossless positioning device and construction method
  • Corrugated steel web combined box girder, suspended splicing lossless positioning device and construction method

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Embodiment 1

[0072] This embodiment provides a cantilever non-destructive positioning device for a corrugated steel web composite box girder, such as Figure 1 to Figure 10 As shown, it includes a dynamic adjustment mechanism 1 and a rigid limit mechanism 2 arranged on the supporting corrugated steel web 6 of the corrugated steel web composite box girder and the corrugated steel web 7 to be suspended. The dynamic adjustment mechanism 1 and the rigid limit Institution 2 relative setting;

[0073] The dynamic adjustment mechanism 1 includes a central rotating hinge 101 including a pair of oppositely arranged rotating shaft mounting plates 10101, and four rotating shafts 10102 are rotatably installed between the pair of rotating shaft mounting plates 10101;

[0074] The four rotating shafts 10102 are respectively rotatably installed with the inner ends of the first upper adjustment telescopic rod 102, the second upper adjustment telescopic rod 103, the first lower adjustment telescopic rod 10...

Embodiment 2

[0092] This embodiment provides a corrugated steel web composite box girder, such as Figure 1 to Figure 10 As shown, it includes a box girder top plate 4 and a box girder bottom plate 5 that are arranged in parallel and oppositely. The outer end is provided with a corrugated steel web 7 to be suspended, and the corrugated steel web combined box girder in Embodiment 1 is provided with a cantilever non-destructive positioning device on the supporting corrugated steel web 6 and the corrugated steel web 7 to be suspended.

Embodiment 3

[0094] This embodiment provides a construction method for a corrugated steel web composite box girder, which uses the corrugated steel web composite box girder in Embodiment 2. The method comprises the following specific steps:

[0095] Step 1, complete the construction of the 0# block girder, set temporary consolidation in the built 0# block girder, the 0# block girder includes supporting corrugated steel web 6; in this embodiment, the 0# block girder The construction adopts the floor support method or the corbel bracket method; according to the continuous beam design segment length, beam segment weight, overall size, section shape, steel web lifting capacity and various construction loads, a special cantilever hanging basket is designed.

[0096] Step 2, non-destructive positioning construction of beam suspension:

[0097] In step 2.1, the corrugated steel web 7 to be suspended is initially hoisted in place.

[0098] Step 2.2, adjust the dynamic adjustment mechanism:

[0...

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Abstract

The invention provides a corrugated steel web combined box girder, a suspension splicing lossless positioning device and a construction method. The suspension splicing lossless positioning device comprises a dynamic adjusting mechanism and a rigid limiting mechanism which are arranged on a supporting corrugated steel web of the corrugated steel web combined box girder and a corrugated steel web to be subjected to suspension splicing, wherein the dynamic adjusting mechanism and the rigid limiting mechanism are oppositely arranged. According to the suspended splicing lossless positioning device for the corrugated steel web combined box girder, the dynamic adjusting mechanism is adopted to replace a traditional high-strength bolt for positioning, so damage to the corrugated steel webs caused by punching is avoided, high-precision millimeter-level control over a distance and an angle between the corrugated steel webs is achieved, and therefore, lossless and accurate positioning of the corrugated steel webs is realized; and through the rigid limiting mechanism, the transverse stability of the corrugated steel webs is improved, accurate positioning is guaranteed, and then construction quality and construction safety are improved. According to the construction method of the corrugated steel web combined box girder, a corrugated steel web combined box girder bridge can be losslessly and accurately positioned to achieve bridge forming.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and relates to the construction of a corrugated steel web combined box girder, in particular to a corrugated steel web combined box girder, a cantilever non-destructive positioning device and a construction method. Background technique [0002] Temporary positioning measures in the construction process of existing variable cross-section corrugated steel web composite box girder bridges are all temporarily fixed by high-strength bolts. However, for variable cross-section corrugated steel web composite box girders, since the shear stiffness of the web is smaller than that of concrete web bridges, the shear deformation of the main girder has a greater impact on the bridge line shape; at the same time, the fabrication and erection of corrugated steel webs Accuracy will have a great impact on the alignment of the bridge. If the influence of pre-camber is not accurately considered during th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/04E01D19/00E01D21/00E01D21/10
CPCE01D2/04E01D19/00E01D21/00E01D21/10
Inventor 王晓明白云腾邹杰张嘉鼎录哲元黄春杨王炳玉韩昭范克锋李帅鹏任万鹏薛园园
Owner CHANGAN UNIV