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Apparatus and method for blanking steel strand stably and accurately on deck

A steel strand, accurate technology, applied in the direction of bridge materials, bridges, bridge construction, etc., can solve the problems of construction difficulty and difficulty, and achieve the effect of ensuring the working length

Active Publication Date: 2016-09-21
杭州市交通工程集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

extremely difficult to construct

Method used

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  • Apparatus and method for blanking steel strand stably and accurately on deck
  • Apparatus and method for blanking steel strand stably and accurately on deck
  • Apparatus and method for blanking steel strand stably and accurately on deck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] like Figure 1 to Figure 19 As shown, a device for stably and accurately cutting steel strands on the bridge deck, including steel strands 1, fixed frame 2, pad beam 3, fixed pulley 4, grinding wheel cutter 5, vertical steel bars 6, etc.

[0043] like Figure 16 to Figure 19 As shown, the steel strand 1 is fixed on the bridge deck through the fixed frame 2, and a restraint ring 14 is provided on one side of the fixed frame 2; a pad beam 3 for hanging basket construction is set at 3m in front of the steel strand 1 release end, and the pad Beam 3 is provided with a The fixed pulley 4 is arranged on the top of the front end of the newly poured concrete A, and a grinding wheel cutter 5 is set at the boundary between the new concrete A and the old concrete B poured to the direction of the newly poured concrete A at 2.2m, and the new concrete Set the vertical steel bar 6 at the boundary between A and old concrete B poured at 0.5m from the old concrete B poured.

[0044] l...

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Abstract

The invention relates to an apparatus and method for blanking a steel strand stably and accurately on a deck. The steel strand is fixed to the deck through a fixing frame, a pad is disposed 3 m in the front of a release end of the steel strand, and the middle of pad is provided with a hole Phi30 mm; a fixed pulley is disposed at the top of the front end of concrete that has been cast, a grinding wheel cutter is disposed 2.2 m from a new and old concrete junction to a new casting direction, and vertical rebars are disposed 0.5 m from the new and old concrete junction to an old casting direction. The method includes: first, attaching front and rear frames to the steel strand; passing fastening bolts through the front and rear frames, and fastening with nuts; pulling the steel strand out of the front frame, passing it sequentially by a constraint ring, the hole Phi30 mm of the pad and the fixed pulley, and pulling forward via the vertical rebars; pulling the steel strand all the way to an end of the newly cast concrete; pulling forward again from the new and old concrete junction so that the front end of the steel strand is out of the end face; cutting the steel strand for accurate blanking with the grinding wheel cutter at a deck cutting position.

Description

technical field [0001] The invention relates to a device for unloading steel strands in building construction, in particular to a device and method for unloading steel strands on bridge decks. Background technique [0002] The RB-06 extra-large bridge of the first phase of the Tehran Northern Expressway is located in the 9-degree earthquake area in the northern mountainous area of ​​Iran. In order to reduce the self-weight of the bridge and further improve the seismic performance of the bridge structure, multiple schemes were compared. The design adopts 3-span corrugated steel web prestressed concrete continuous girder bridge. The bridges are horizontally arranged in double widths, with a clear distance of 2m between the left and right bridges. The single bridge deck is 13.1m wide, and its span layout is 83+153+83=319m. The main span of the bridge is 153m across the Sanggan River Valley, connecting the entrance and exit of the tunnel between two high mountains. The slopes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D101/28
CPCE01D21/00E01D2101/28
Inventor 项伟康娄永平陈丽凤刘倩李华军张家华
Owner 杭州市交通工程集团有限公司
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