Temporary anchoring structure of segment prefabricated assembled concrete box girder and anchoring method

A concrete box girder, prefabricated assembly technology, applied in the direction of erecting/assembling bridges, bridges, bridge materials, etc., can solve the problems of unfavorable force on the main girder, complicated construction process, etc., achieve fast construction speed, guaranteed construction quality, and speed up construction Effect

Pending Publication Date: 2020-02-28
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to cut off the reinforcement of the main beam, which is unfavorable

Method used

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  • Temporary anchoring structure of segment prefabricated assembled concrete box girder and anchoring method
  • Temporary anchoring structure of segment prefabricated assembled concrete box girder and anchoring method
  • Temporary anchoring structure of segment prefabricated assembled concrete box girder and anchoring method

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Experimental program
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Example Embodiment

[0023] The present invention will be further described below in conjunction with the drawings.

[0024] The present invention is a temporary anchoring plan for segmented prefabricated and assembled concrete box girder. The temporary anchoring device mainly includes: (1) a sleeve 2 embedded in the prefabricated segment beam; (2) steel tooth block 1; (3) fine Rolled rebar 5 and other components. The main implementation process is as follows: (1) According to the section form of the main beam, select the location of the temporary anchoring tooth block, such as figure 1 As shown, the anchors are generally arranged symmetrically on both sides of the web, and the anchoring position must avoid the position of the prestressed steel beam. (2) Pre-embedding sleeve 2 on the precast segment beam, such as image 3 As shown, the steel plate 3 is welded under the sleeve 2 and the steel plate 3 is welded to the transverse steel bars 8 of the main beam to ensure that the sleeve is firmly anchored...

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Abstract

The invention discloses a temporary anchoring structure of a segment prefabricated assembled concrete box girder. The temporary anchoring structure is characterized in that a sleeve is embedded in each prefabricated segment girder, a bolt hole is formed in the sleeve, an opening of the bolt hole is upward and faces the top of the prefabricated segment girder, steel tooth blocks are mounted on eachprefabricated segment girder, mounting holes are formed in the steel tooth blocks, the steel tooth blocks are connected with the sleeves through bolts, horizontal holes are formed in the steel toothblocks, finish rolling threaded steel bars are tensioned between the horizontal holes of corresponding steel tooth blocks of the two adjacent prefabricated segment girders, and temporary anchoring isachieved. Through the construction and measures, the construction speed is greatly accelerated, the construction quality is guaranteed, the overall landscape effect of the bridge is improved, and thetemporary anchoring structure is a very practical and safe temporary anchoring scheme, and can be widely adopted in prefabricated segment girder construction.

Description

technical field [0001] The invention relates to the technical field of bridge structure design and construction, in particular to a segmental prefabricated assembled concrete box girder temporary anchorage structure. Background technique [0002] At present, with the rapid development of urban construction, urban bridge design and construction plans pay more and more attention to rapid construction, construction quality, and landscape effects. Segmental prefabricated assembled concrete box girder technology has the advantages of fast construction speed, good construction quality, and little impact on existing traffic and surrounding environment. It is more and more widely used in concrete bridge structures. A reliable temporary anchoring technical scheme for segmentally assembled box girders is an important guarantee for improving project quality and reducing safety risks. According to the survey, the main temporary anchoring technical solutions currently used are as follow...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D2/04E01D101/26E01D101/30
CPCE01D2/04E01D21/00E01D2101/26E01D2101/30
Inventor 李福鼎齐新张震卢松波
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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