CN103306211A - Long and large No.0 reinforcing steel bar binding construction method based on framework beam - Google Patents
Long and large No.0 reinforcing steel bar binding construction method based on framework beam Download PDFInfo
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- CN103306211A CN103306211A CN2013102411367A CN201310241136A CN103306211A CN 103306211 A CN103306211 A CN 103306211A CN 2013102411367 A CN2013102411367 A CN 2013102411367A CN 201310241136 A CN201310241136 A CN 201310241136A CN 103306211 A CN103306211 A CN 103306211A
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Abstract
The invention belongs to the technical field of bridge reinforcing steel bar binding construction, provides a long and large No.0 reinforcing steel bar binding construction method based on a framework beam, and aims to overcome the defects that in bridge cantilever construction, when a No.0 reinforcing steel bar is bound, the construction period is short, the construction process is complex, and the economic benefit is poor. The method comprises the steps as follows: when a standing column framework is constructed, and a bottom web reinforcing steel bar is bound on a template simultaneously; after the framework beam is constructed, a bolt end of a refined twisted steel bar is fixed in the position of a simple distributive girder, and the other end of the refined twisted steel bar is welded to a web horizontal rib in the bridge direction; and the web horizontal rib in the bridge direction is hung on the distributive girder by screwing the bolt and lifted, so that a web stirrup is vertical. According to the method, the construction process is simple, the practical value is high, the use effect is good, and the construction quality is guaranteed, the problems of self-standing of a steel bar net and the control of the sinking amount of the long and large No.0 web steel bar are solved simply and conveniently as well; and the work efficiency is improved, the construction period is shortened, the construction cost is reduced, and a better economic benefit is gained.
Description
Technical field
The invention belongs to the technical field of bridge reinforcement colligation construction, be specifically related to a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam.
Background technology
In No. 0 piece work progress of bridge cantilever pouring, reinforcing bar binding generally all adopts the method that original position is carried out colligation on support or carriage template; Namely carry out building of No. 0 block concrete after reinforcing bar binding is complete.In recent years, along with developing rapidly of high-speed railway, the ratio that bridge engineering is put is increasing, and corresponding large-span continuous girder bridges, rigid frame bridge are also more and more, many No. 0 ultra-large pieces just occur thereupon.For the reinforcing bar binding of No. 0 piece of conventional size, the method that employing original position on template is carried out colligation gets final product.But for length, large No. 0 piece, its prestressing force complicated layout, stirrup very high very soft cause at all can't own frame vertical, if reinforcing bar binding adopts conventional method to have that the duration is long, that construction technology is cumbersome, economic benefit is not good is not enough and can not satisfy the technical requirements of related specifications.
In the beam prefabricated process of whole case, long, the most complicated operation of holding time will belong to reinforcing bar.The tradition construction adopts end web and top board reinforcing bar to separate colligation, hoisting construction process, from the Steel Reinforcing Bar Material to the formed reinforcing steel bars, enter mould, a large amount of human and material resources and time have been taken, and quality is difficult for guaranteeing, especially hang at reinforcing cage colligation, reinforcing cage and move, reach in the placement of cage of reinforcing bar process, above problem is just more outstanding.
Summary of the invention
The deficiency that the present invention's duration when solving in the bridge cantilever construction No. 0 piece reinforcing bar binding is long, construction technology is cumbersome, economic benefit is not good provides a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam.
The present invention adopts following technical scheme to realize:
It is the framework beam that No. 0 piece reinforcing bar is carried arch brace that a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam, (1) arrange a kind of, and the web reinforcement Netcom of (2) No. 0 pieces crosses vertical dowel and is suspended on the framework beam.
The Specific construction step is as follows: the installation of (1) framework beam: described framework beam comprises column, and the column top arranges distribution beam, and the column bottom support is on support or Dun Ding, and framework beam is positioned at No. 0 piece top board top and does not hinder the concrete operation; The colligation of (2) No. 0 piece reinforcing bars: the end web reinforcement of elder generation's No. 0 piece of colligation on template is suspended to the web reinforcement net on the framework beam by vertical dowel again.
Described vertical dowel is the finish rolling deformed bar of strap bolt.Column is constructed when complete, carries out simultaneously the colligation of end web reinforcement; After the framework beam construction is complete, carry out extensive reinforcing bar binding: the bolt end that essence is pricked indented bars is fixed on the distribution beam place, the other end be welded on along bridge to the web horizontal bar of No. 0 piece on, the web horizontal bar is suspended on the distribution beam, essence is pricked the indented bars bolt and is screwed, promote to the web horizontal bar along bridge, the web hooping that is connected with the web horizontal bar is erect.
Described column top arranges bearing plate, and girder is installed on the bearing plate, and distribution beam places on the girder.Described column is comprised of shaped steel, and shaped steel is a kind of in I steel, channel-section steel or the welding shaped steel; Described girder is the girder truss that shaped steel, Bailey beam or shaped steel are welded; Described support backing plate is comprised of steel plate; Described distribution beam is shaped steel, Bailey beam or the shaped steel girder truss that is welded.Described column is along vertical bridge to laying in the web center; Described girder is along laterally placing the column top.Girder is girder truss, comprises two single truss structure beams, connects to form a main truss by the girder tie-rod between two single truss structure beams and sets a roof beam in place.
Framework beam of the present invention is to carry arch brace for the flexible reinforcing bar of No. 0 piece, can bear deadweight and make that web reinforcement supports oneself to upper pulling force.Column is along vertical bridge to laying in the web center, and the quantity of its setting is determined by No. 0 block size and structural calculation; Girder,, connects by the girder tie-rod between two single truss structure beams for strengthening the stability between single truss structure beam if when girder is girder truss along laterally placing the column top, two single truss structure beams is formed a main truss set a roof beam in place.For saving time and increase construction speed, column frame is constructed when complete, can carry out simultaneously the colligation of end web reinforcement; After the framework beam construction is complete, carry out extensive reinforcing bar binding.
The present invention has following effect: construction technology is simple, practical value is high, result of use is good, the technical requirements that can satisfy related specifications is that construction quality is guaranteed, the grow up deflection of No. 0 piece web reinforcement of self-support problem that again can easy solution steel mesh reinforcement and control.Improved operating efficiency, shortened the duration, reducing construction cost has been obtained better economic benefit.
Description of drawings
Fig. 1 is column frame direction across bridge figure;
Fig. 2 is that the vertical bridge of column frame is to figure;
Fig. 3 is reinforcing bar binding direction across bridge figure;
Fig. 4, Fig. 5 are that the vertical bridge of reinforcing bar binding is to figure.
Among the figure: 1-column, 2-column batten plate, 3-bearing plate, 4-girder, the horizontal chord member of 5-girder, the vertical rod of 6-girder, 7-girder brace, 8-distribution beam, the 9-essence is pricked indented bars, 10-floor level muscle, 11-base plate stirrup, 12-web horizontal bar, the 13-web hooping, 14-0 piece, 15-girder tie-rod, A-control point 1, B-control point 2, C-control point 3, D-control point 4, E control point 5, F-control point 6.
The specific embodiment
The present invention will be further described by reference to the accompanying drawings.
Embodiment: take No. 0 piece reinforcing bar binding construction of certain large Span Continuous steel structure as example, concrete steps are:
1), framework beam design:
Framework beam is comprised of column 1, girder 4 and distribution beam 8; [12 channel-section steels form column 1 back-to-back, and [between 12 channel-section steels column batten plate 2 should be set, column batten plate 2 is made of steel plate by two; Column arranges bearing plate 3 above 1 top, and bearing plate 3 is comprised of the thick 30cm of 2cm * 30cm steel plate; Girder 4 is positioned on the column bearing plate 3, and girder 4 is the simple and easy Bailey beam of self-control; It is comprised of the horizontal chord member 5 of girder, girder vertical rod 6, girder brace 7, and the horizontal chord member 5 of girder is made of back-to-back two 10 channel-section steels, and the 48mm round steel pipe is adopted in girder vertical rod 6, and girder brace 7 adopts ∠ 5 angle steel; Distribution beam 8 places on the girder 4, and it is the simple self-made Bailey beam, by adopting the member the same with girder to form; Framework beam can bear deadweight and make that web reinforcement supports oneself to upper pulling force.
2), framework beam construction:
Carry out the making processing of framework beam by design drawing.The supporting-point of column is built number of times and can be divided into two kinds by No. 0 piece 14:
No. 0 piece one-time-concreting construction: the column supporting-point places on the support (carriage);
No. 0 piece secondary pouring construction: the column supporting-point places on the web concrete of building for the first time;
3), the colligation of reinforcing bar:
When column 1 construction is complete, can carry out the colligation of end web reinforcement in template simultaneously, end web reinforcement comprises floor level muscle 10, base plate stirrup 11, web horizontal bar 12, web hooping 13; After the framework beam construction is complete, can carry out extensive reinforcing bar binding.The bolt end of pricking indented bars 9 with the essence of strap bolt is fixed on simple and easy distribution beam 8 places, the other end be welded on along bridge to web horizontal reinforcement 12 on, web horizontal bar 12 is suspended on the distribution beam 8, the bolt that essence is pricked indented bars screws, promote to web horizontal bar 12 along bridge, straighten thereby web hooping 13 is erect.
4), implementation result:
The deflection that the front control point of suspension centre is not set has reached 20mm, has surpassed " railway concrete engineering construction quality acceptance criteria " (TB10424-2010) error permissible value of the middle 10mm that requires, causes the steel topping blocked up, and the durability of structure is descended.Arrange that the deflection at control point all has been controlled in the 10mm behind the suspension centre, see the following form 1, satisfied asking mutually of TB10424-2010.
Table 1: deflection monitoring result
| The |
1 | 2 | 3 | 4 | 5 | 6 |
| Deflection mm (suspension centre is not set to be supported) | 20 | 18 | 15 | 15 | 18 | 20 |
| Deflection mm (suspension centre is set to be supported) | 8 | 6 | 5 | 5 | 7 | 8 |
Claims (8)
1. piece reinforcing bar binding job practices of growing up No. 0 based on framework beam is characterized in that: (1) arranges a kind of is the framework beam that No. 0 piece reinforcing bar is carried arch brace, and the web reinforcement Netcom of (2) No. 0 pieces crosses vertical dowel and is suspended on the framework beam.
2. a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam according to claim 1, it is characterized in that: the Specific construction step is as follows: the 1) installation of framework beam: described framework beam comprises column (1), column (1) top arranges distribution beam (8), column (1) bottom support is on support or Dun Ding, and framework beam is positioned at No. 0 piece top board top and does not hinder the concrete operation; 2) colligation of No. 0 piece reinforcing bar: the end web reinforcement of elder generation's No. 0 piece of colligation on template is suspended to the web reinforcement net on the framework beam by vertical dowel again.
3. a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam according to claim 2, it is characterized in that: described column (1) top arranges bearing plate (3), the upper girder (4) of installing of bearing plate (3), distribution beam (8) places on the girder (4).
4. a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam according to claim 2 is characterized in that: the finish rolling deformed bar (9) that described vertical dowel is strap bolt.
5. a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam according to claim 2, it is characterized in that: the colligation concrete steps of described No. 0 piece reinforcing bar are: column (1) is constructed when complete, carries out simultaneously the colligation of end web reinforcement; After the framework beam construction is complete, carry out extensive reinforcing bar binding: the bolt end of essence bundle indented bars (9) is fixed on simple and easy distribution beam (8) and locates, the other end be welded on along bridge to web horizontal bar (12) on, web horizontal bar (12) is suspended on the distribution beam (8), essence is pricked indented bars (9) bolt and is screwed, promote to web horizontal bar (12) along bridge, web hooping (13) is erect.
6. according to claim 2 or 3 described a kind of piece reinforcing bar binding job practicess of growing up No. 0 based on framework beam, it is characterized in that: described column (1) is comprised of shaped steel, and shaped steel is a kind of in I steel, channel-section steel or the welding shaped steel; Described girder (4) is the girder truss that Bailey beam or shaped steel are welded; Described support backing plate (3) is comprised of steel plate; Described distribution beam (8) is the girder truss that shaped steel, Bailey beam or shaped steel are welded.
7. a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam according to claim 2 is characterized in that: described column (1) is along vertical bridge to laying in the web center; Described girder (4) is along laterally placing the column top.
8. a kind of piece reinforcing bar binding job practices of growing up No. 0 based on framework beam according to claim 3, it is characterized in that: girder (4) is girder truss, comprise two single truss structure beams, connect to form a main truss by girder tie-rod (15) between two single truss structure beams and set a roof beam in place.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241136.7A CN103306211B (en) | 2013-06-18 | 2013-06-18 | A kind of No. 0 block reinforcing bar binding construction method of growing up based on framework beam |
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| CN201310241136.7A CN103306211B (en) | 2013-06-18 | 2013-06-18 | A kind of No. 0 block reinforcing bar binding construction method of growing up based on framework beam |
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| CN103306211A true CN103306211A (en) | 2013-09-18 |
| CN103306211B CN103306211B (en) | 2015-08-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103835238A (en) * | 2014-02-21 | 2014-06-04 | 中铁大桥局股份有限公司 | High-pier cable-stayed bridge zero-number block non-bracket construction method and structure in construction process |
| CN104831639A (en) * | 2015-05-13 | 2015-08-12 | 中建六局土木工程有限公司 | Consolidation and release construction method for 0# blocks of ultra-wide non-uniform continuous beam |
| CN106192607A (en) * | 2016-08-26 | 2016-12-07 | 中铁四局集团有限公司 | Subgrade of metro steel reinforcement cage suspension binding clamping fixture and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835238A (en) * | 2014-02-21 | 2014-06-04 | 中铁大桥局股份有限公司 | High-pier cable-stayed bridge zero-number block non-bracket construction method and structure in construction process |
| CN103835238B (en) * | 2014-02-21 | 2015-11-18 | 中铁大桥局集团有限公司 | A kind of high pier cable stayed bridge No. 0 block non-stand construction method and the structure in constructing |
| CN104831639A (en) * | 2015-05-13 | 2015-08-12 | 中建六局土木工程有限公司 | Consolidation and release construction method for 0# blocks of ultra-wide non-uniform continuous beam |
| CN104831639B (en) * | 2015-05-13 | 2016-10-12 | 中建六局土木工程有限公司 | A kind of ultra-wide nonprismatic continuous beam 0# block consolidation and releasing construction method |
| CN106192607A (en) * | 2016-08-26 | 2016-12-07 | 中铁四局集团有限公司 | Subgrade of metro steel reinforcement cage suspension binding clamping fixture and application thereof |
| CN106192607B (en) * | 2016-08-26 | 2018-02-06 | 中铁四局集团有限公司 | Subgrade of metro steel reinforcement cage suspension type binding clamping fixture and its application |
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| CN103306211B (en) | 2015-08-12 |
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