CN107780334A - A kind of combination beam prestress application attachment structure and its installation method - Google Patents
A kind of combination beam prestress application attachment structure and its installation method Download PDFInfo
- Publication number
- CN107780334A CN107780334A CN201711007451.8A CN201711007451A CN107780334A CN 107780334 A CN107780334 A CN 107780334A CN 201711007451 A CN201711007451 A CN 201711007451A CN 107780334 A CN107780334 A CN 107780334A
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- CN
- China
- Prior art keywords
- steel
- concrete slab
- board unit
- steel girder
- top plate
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
- E01D2101/285—Composite prestressed concrete-metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of combination beam prestress application attachment structure and its installation method, attachment structure includes multiple board unit pieces and corresponds fixed steel girder unit piece with the board unit piece, board unit piece includes concrete slab, more horizontal presstressed reinforcing steels are disposed with concrete slab, bottom is provided with pre-embedded steel slab and high-strength bolt, and the adjacent two board unit pieces are by pouring fixation；Steel girder unit includes steel girder top plate, and the high-strength bolt sequentially passes through the steel girder top plate straight up, the pre-embedded steel slab enters in the concrete slab.The present invention, dexterously the compressive pre-stress of presstressed reinforcing steel directly and efficiently can be all put in concrete slab, avoid being walked by steel girder point, improve the bearing capacity of concrete slab, significant effect.
Description
Technical field
The present invention relates to bridge floor construction, and in particular to a kind of combination beam prestress application attachment structure and its installation method.
Background technology
Steel concrete combination beam due to having the advantages that the convenient, cost of construction saves, without deck paving problem, good endurance, by
More and more extensive use, and the concrete slab of the hogging moment area such as fulcrum is because bearing hogging moment and crack in tension, when span is little,
Fracture width can meet code requirement.
And with being actually needed, combination beam span is progressively increasing, and if do not taken the necessary measures, fracture width is difficult to control
System, common measure are by laying and tensioned prestressing bar in prefabricated board, to increase the compressive pre-stress in concrete.And by
In before tensioned prestressing bar, concrete slab is combined by WELDING STUDS with steel girder, because of steel girder section and rigidity accounting
More, the compressive pre-stress overwhelming majority of application is walked by steel girder point, extra to increase steel main beam stress, and only small part compressive pre-stress stays
It is stored in concrete slab, it is less efficient.
As can be seen here, the compressive pre-stress that current steel concrete combination beam is present in concrete retains the problem of less.
The content of the invention
The technical problems to be solved by the invention are that the compressive pre-stress that current steel concrete combination beam is present in concrete is retained
The problem of less.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention there is provided one kind and combine girder pre-stressed apply
Add attachment structure, including：
Multiple board unit pieces, including concrete slab, more horizontal presstressed reinforcing steels are disposed with the concrete slab,
Bottom is provided with pre-embedded steel slab and high-strength bolt, and the adjacent two board unit pieces are by pouring fixation；
Steel girder unit piece, correspond and fix with the board unit piece, including steel girder top plate, the high intensity
Bolt sequentially passes through the steel girder top plate straight up, the pre-embedded steel slab enters in the concrete slab.
In another preferred embodiment, prepared screw-bolt hole is provided with along its length direction on the steel girder top plate,
The prepared screw-bolt hole is set in a row, and the number often arranged is six.
In another preferred embodiment, each presstressed reinforcing steel is contour, and is disposed side by side on the concrete slab
In the aspect of center, the top of the high-strength bolt is higher than the presstressed reinforcing steel.
In another preferred embodiment, the steel girder unit piece also includes steel kingpost baseplate, the steel girder bottom
Plate is fixed by vertical supporting plate and the steel girder top plate.
Present invention also offers a kind of installation method of combination beam prestress application attachment structure, comprise the following steps：
Pre-embedded steel slab, high-strength bolt, concrete slab are first made as board unit piece in advance；
Board unit piece is lifted to steel girder top plate again, high-strength bolt is not applied first after passing through top plate prepared screw-bolt hole
Twist；
Pour the wet seam between board unit piece, after wet seam reaches intensity, tensioned prestressing bar, with to coagulation
Apply compressive pre-stress in native plate, stubborn high-strength bolt is finally applied, to form combination beam overall structure.
The present invention, dexterously the compressive pre-stress of presstressed reinforcing steel directly and efficiently can be all put in concrete slab, kept away
Exempt to be walked by steel girder point, improve the bearing capacity of concrete slab, significant effect.
Brief description of the drawings
Fig. 1 is the structural representation of the board unit piece of the present invention；
Fig. 2 is the structural representation of the steel girder unit piece of the present invention；
Fig. 3 is the schematic cross-section of C-C in Fig. 2；
Fig. 4 is the structural representation after present invention installation
Fig. 5 is the schematic cross-section of D-D in Fig. 4.
Embodiment
The present invention is described in detail with reference to embodiment and Figure of description.
As shown in figures 1 and 3, a kind of combination beam prestress application attachment structure provided by the invention includes combining Slab element
Part and steel girder unit piece.Board unit piece is multiple, including concrete slab 4, be disposed with concrete slab 4 more it is horizontal
Presstressed reinforcing steel 3, bottom are provided with pre-embedded steel slab 1 and high-strength bolt 2, and two adjacent board unit pieces are interior by pouring fixation.
Steel girder unit piece and board unit piece, which correspond, to be fixed, including steel girder top plate 5, high-strength bolt 2 straight up according to
It is secondary to enter through steel girder top plate 5, pre-embedded steel slab 1 in concrete slab 4.
Concrete slab 4 is attached fixation by presstressed reinforcing steel 3 and high-strength bolt 2 with firm girder top plate, and can pass through
Tensioned prestressing bar 3 applies compressive pre-stress to concrete slab 4, simple in construction, easy for installation.
As shown in Figures 2 and 3, prepared screw-bolt hole 6, prepared screw-bolt hole 6 are provided with along its length direction on steel girder top plate 5
Set in a row, and the number often arranged is six.The bonding strength of steel girder top plate 5 and concrete slab 4 can be increased by setting in a row, and
And the number often arranged is six, can effectively improve bonding strength.
Each presstressed reinforcing steel 3 is contour, and is disposed side by side in the center aspect of concrete slab 4, and the top of high-strength bolt 2 is high
In presstressed reinforcing steel 3.The bearing capacity performance of concrete can be maximized by being arranged on the center of concrete slab 4, and high-strength bolt 2
Top be higher than presstressed reinforcing steel 3, effectively the effect of high-strength bolt 2 and presstressed reinforcing steel 3 mutually can be pind down, enhancing structure
Stability, improve the reliability of structure torque conduction.
As shown in Fig. 2 steel girder unit piece also includes steel kingpost baseplate, steel kingpost baseplate passes through vertical supporting plate and steel
Girder top plate 5 is fixed.The structure of steel girder unit piece is simple, mitigates deadweight to greatest extent, while and can is carried out with miscellaneous part
It is fixed.
Present invention also offers a kind of installation method of combination beam prestress application attachment structure, following step is specifically included
Suddenly：
Pre-embedded steel slab 1, high-strength bolt 2, concrete slab 4 are first made as board unit piece in advance；
Board unit piece is lifted to steel girder top plate 5 again, high-strength bolt 2 passes through elder generation after top plate prepared screw-bolt hole 6
Do not apply stubborn；
The wet seam 7 between board unit piece is poured, after wet seam 7 reaches intensity, tensioned prestressing bar 3, with right
Apply compressive pre-stress in concrete slab 4, stubborn high-strength bolt 2 is finally applied, to form combination beam overall structure.
Because the present invention is in preliminary fix, board unit piece is not having and not needed with the tentatively installation of steel girder top plate 5
High-strength bolt 2 is tightened, therefore, each board unit piece very easily operates when pouring, and can adjust in time respective
Position, after the completion of pouring, each board unit piece is fixed, and now tensioned prestressing bar 3, presstressed reinforcing steel 3 should by precompressed again
Power is concentrated and is applied on concrete slab 4.
The present invention, dexterously the compressive pre-stress of presstressed reinforcing steel directly and efficiently can be all put in concrete slab, kept away
Exempt to be walked by steel girder point, improve the bearing capacity of concrete slab, significant effect.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn that the knot made under the enlightenment of the present invention
Structure changes, and the technical schemes that are same or similar to the present invention, each falls within protection scope of the present invention.
Claims (5)
- A kind of 1. combination beam prestress application attachment structure, it is characterised in that including：Multiple board unit pieces, including concrete slab, more horizontal presstressed reinforcing steels, bottom are disposed with the concrete slab Provided with pre-embedded steel slab and high-strength bolt, the adjacent two board unit pieces are by pouring fixation；Steel girder unit piece, correspond and fix with the board unit piece, including steel girder top plate, the high-strength bolt The steel girder top plate is sequentially passed through straight up, the pre-embedded steel slab enters in the concrete slab.
- A kind of 2. combination beam prestress application attachment structure as claimed in claim 1, it is characterised in that the steel girder top plate On along its length direction be provided with prepared screw-bolt hole, the prepared screw-bolt hole is set in a row, and the number often arranged is six.
- A kind of 3. combination beam prestress application attachment structure as claimed in claim 1, it is characterised in that each presstressed reinforcing steel It is contour, and be disposed side by side in the center aspect of the concrete slab, the top of the high-strength bolt is higher than the prestressing force Muscle.
- A kind of 4. combination beam prestress application attachment structure as claimed in claim 1, it is characterised in that the steel girder unit Part also includes steel kingpost baseplate, and the steel kingpost baseplate is fixed by vertical supporting plate and the steel girder top plate.
- 5. a kind of installation method of combination beam prestress application attachment structure, it is characterised in that comprise the following steps：Pre-embedded steel slab, high-strength bolt, concrete slab are first made as board unit piece in advance；Board unit piece is lifted again does not apply stubborn to steel girder top plate, high-strength bolt through elder generation after top plate prepared screw-bolt hole；Pour the wet seam between board unit piece, after wet seam reaches intensity, tensioned prestressing bar, with to concrete slab Apply compressive pre-stress, stubborn high-strength bolt is finally applied, to form combination beam overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007451.8A CN107780334A (en) | 2017-10-25 | 2017-10-25 | A kind of combination beam prestress application attachment structure and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007451.8A CN107780334A (en) | 2017-10-25 | 2017-10-25 | A kind of combination beam prestress application attachment structure and its installation method |
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| Publication Number | Publication Date |
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| CN107780334A true CN107780334A (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711007451.8A Pending CN107780334A (en) | 2017-10-25 | 2017-10-25 | A kind of combination beam prestress application attachment structure and its installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660948A (en) * | 2018-05-15 | 2018-10-16 | 浙江大学 | Detachable Prefabricated combined beam screw and combination beam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590322A (en) * | 2013-11-05 | 2014-02-19 | 上海市政工程设计研究总院（集团）有限公司 | Shear force connecting part, combination beam comprising same and construction method of combination beam |
| CN104131652A (en) * | 2014-07-17 | 2014-11-05 | 湖南大学 | Fabricated RPC-steel-concrete hybrid beam structure |
| CN106894326A (en) * | 2017-03-09 | 2017-06-27 | 河南省交通规划设计研究院股份有限公司 | The construction method of assembled pretensioned prestressing corrugated steel web plate composite box girder |
| CN207537863U (en) * | 2017-10-25 | 2018-06-26 | 中铁大桥勘测设计院集团有限公司 | A kind of combination beam prestress application connection structure |
-
2017
- 2017-10-25 CN CN201711007451.8A patent/CN107780334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590322A (en) * | 2013-11-05 | 2014-02-19 | 上海市政工程设计研究总院（集团）有限公司 | Shear force connecting part, combination beam comprising same and construction method of combination beam |
| CN104131652A (en) * | 2014-07-17 | 2014-11-05 | 湖南大学 | Fabricated RPC-steel-concrete hybrid beam structure |
| CN106894326A (en) * | 2017-03-09 | 2017-06-27 | 河南省交通规划设计研究院股份有限公司 | The construction method of assembled pretensioned prestressing corrugated steel web plate composite box girder |
| CN207537863U (en) * | 2017-10-25 | 2018-06-26 | 中铁大桥勘测设计院集团有限公司 | A kind of combination beam prestress application connection structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660948A (en) * | 2018-05-15 | 2018-10-16 | 浙江大学 | Detachable Prefabricated combined beam screw and combination beam |
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