CN103669193A - Laterally spliced combination T beam with wavy steel webs and construction method thereof - Google Patents
Laterally spliced combination T beam with wavy steel webs and construction method thereof Download PDFInfo
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- CN103669193A CN103669193A CN201410013725.4A CN201410013725A CN103669193A CN 103669193 A CN103669193 A CN 103669193A CN 201410013725 A CN201410013725 A CN 201410013725A CN 103669193 A CN103669193 A CN 103669193A
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Abstract
The invention discloses a laterally spliced combination T beam bridge with wavy steel webs. The laterally spliced combination T beam bridge comprises a plurality of prefabricated T beam units (1) and cross beams 5, wherein a porous continuous combination T beam is formed through the longitudinal connection of adjacent prefabricated T beam units by the cross beams 5, and the lower end surfaces of top slab wet joints (2) of two adjacent prefabricated T beam units are connected with top slab lower edge steel plates (2-1). The invention further discloses a construction method of the laterally spliced combination T beam bridge. The construction method comprises the following construction steps: constructing bridge piers, bridge abutment pier bodies (6) and bridge abutment cap beams (4), erecting trestles (3) at the outer sides of the bridge piers, and installing the prefabricated T beam units at the trestles; fixing the top slab lower edge steel plates (2-1) to which studs are connected at the parts of the top slab wet joints of two adjacent prefabricated T beam units, and using the top slab lower edge steel plates as support formworks to pour top slab wet joint concrete (2-3); longitudinally pouring pier top cross beams or installing prefabricated pier top cross beams (5) on the trestles, and connecting all spans of prefabricated T beam units into the porous continuous T beam. The use quantity of the trestles and the formworks is effectively reduced, the cost is reduced, traffic on roads below the bridge is not interrupted in the construction process, and the scenery requirement of the urban bridge is met.
Description
Technical field
The invention belongs to the bridge technology field of highway and railway, what relate generally to is a kind of horizontal assembled Wavelike steel webplate combination T beam and construction method.
Background technology
Wavelike steel webplate prestressed concrete beam is as a kind of novel steel-concrete combined structure, take full advantage of the advantage that concrete crushing strength is high, Wavelike steel webplate shear strength is high, effectively steel, concrete bi-material are combined, having improved the service efficiency of material, is a kind of economy, reasonable, efficient form of structure.
The horizontally-spliced concrete T-shaped beam of assembling is one of current modal top bridge construction, has multiple advantage.But because its prestressed concrete T beam deadweight is larger, transportation and spanning equipment are had relatively high expectations, for alleviating concrete T-shaped beam dead load, in the situation that meeting structure stress, by reducing concrete web thickness, carry out weight reduction, but be difficult for guaranteeing concrete pouring quality, operation process median ventral plate there will be the harm such as diagonal crack.In addition, assembly concrete T beam needs colligation web reinforcement, makes a large amount of templates when prefabricated, causes that operating expenses is high, long construction period.In order to meet the stressed needs with laying bearing of shearing resistance, web need arrange in beam end the section of broadening, and not only makes complex structure, but also has increased difficulty of construction.
Traditional horizontal spliced prestressed concrete T-shaped beam bridge construction method is: prefabrication prestressed concrete T beam, transportation be installed in Bridge Pier, direction across bridge by frange plate, diaphragm and the crossbeam of adjacent two T beam unit by being laterally connected to form bridge floor.According to the wide difference of bridge, direction across bridge consists of a plurality of T beams; Vertical bridge connects two across to multispan T beam to cast-in-situ concrete, forms continuous beam structure.The problem that this construction method exists is: need dispose bent cap at bridge pier, pier roof rail difficulty of construction is large, has affected construction speed, has increased construction costs; And bridge pier moulding is single, Bridge Landscape weak effect.
Summary of the invention
The object of the invention is the deficiency existing for above-mentioned horizontal assembled concrete T-shaped beam, proposed a kind of horizontal assembled Wavelike steel webplate combination T beam and construction method.It had both had Wavelike steel webplate concrete beam structural advantages, can effectively overcome the problem that above-mentioned precast concrete T-beam runs into again, guaranteeing under the prerequisite of product quality and construction quality, effectively alleviated T beam weight, shortened construction period, reduce production costs and construction cost, and under construction jackshaft, road keeps current.And can require to be designed to various graceful moulding according to view, meet Urban Bridge view needs.Meanwhile, can be used for the bridge of uncovered beam bridge pier, also can be used for having the bridge of bent cap bridge pier.
The present invention realizes the technical scheme that above-mentioned purpose takes: a kind of horizontal assembled Wavelike steel webplate combination T beam bridge, comprise a plurality of prefabricated Wavelike steel webplate T beam elements and by contiguous prefabricated Wavelike steel webplate T beam element by being longitudinally connected to form the crossbeam of the continuous prefabricated Wavelike steel webplate T beam of porous, in the wet seam of the top board of described two adjacent prefabricated Wavelike steel webplate T beam elements lower surface, be connected with top board lower edge steel plate.
The construction method that the present invention realizes horizontal assembled Wavelike steel webplate combination T beam is: first, construction bridge pier and abutment pier shaft and abutment bent cap, set up support in bridge pier outside, Precast T-Beam cellular installation on support; Secondly, the top board lower edge steel plate that is connected with peg is fixed on to the wet seam crossing of top board of adjacent two Precast T-Beam unit, and take this top board lower edge steel plate and build the wet joint concrete of top board as support shuttering; Finally, on support, longitudinally pour into a mould pier head piece or prefabricated pier head piece, each is connected into porous continuous beam across Precast T-Beam unit.
Precast T-Beam of the present invention unit is prefabricated Wavelike steel webplate.
On top board lower edge steel plate of the present invention, be provided with a plurality of pegs.
Peg of the present invention and top board lower edge steel plate are for being welded to connect.
Top board lower edge steel plate of the present invention is connected by welding or bolt with described Precast T-Beam unit.
On abutment pier shaft of the present invention, be provided with bearing or embedded bar.
It is of the present invention that on support, longitudinally cast pier head piece or prefabricated pier head piece adopt splicing to connect into whole continuous beam on many supports or the continuous rigid frame of forming.
The present invention has following advantage compared with prior art:
(1) T beam adopts Wavelike steel webplate combining structure, and handsome in appearance, stress performance is reasonable, has given full play to the service efficiency of steel and concrete material, has reduced amount of concrete, has alleviated Precast T-Beam weight, energy-conserving and environment-protective, and economic performance is good.
(2) the employing of structural key parts Wavelike steel webplate combination T beam is prefabricated, by cast-in-place wet seam, is connected to form Wavelike steel webplate T beam bridge, is conducive to batch production processing, guarantees construction quality, accelerating construction progress.
(3) laterally the lower edge steel plate of wet seam can compare with the wet seam of ordinary concrete the operation of having avoided dismounting template directly as the template of cast-in-situ concrete, has reduced the working amount of wet seam, has shortened construction period, has accelerated construction speed.
(4) cancel pier cap beam, expanded bridge pier moulding application type, can according to aesthetic requirement, design the bridge pier of beautiful design, greatly promoted the landscape function of bridge.
(5) only in pier shaft both sides, set up a small amount of support, and support and template recoverable, cost-saving, improved economy.
(6) in work progress, can keep road under bridge, social benefit is good.
Accompanying drawing explanation
Fig. 1 is the horizontal assembled Wavelike steel webplate combination T beam construction sequence figure () of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the horizontal assembled Wavelike steel webplate combination T beam construction sequence figure (two) of the present invention.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the horizontal assembled Wavelike steel webplate combination T beam construction sequence figure (three) of the present invention.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is bearing mode middle cross beam profile of the present invention.
Fig. 8 is pier beam consolidation mode middle cross beam profile of the present invention.
Fig. 9 is the horizontal assembled Wavelike steel webplate combination T beam schematic diagram of the present invention.
Figure 10 is structure facade, the floor map that pre-embedded steel slab of the present invention and wet seam are welded to connect.
Figure 11 is the bolted structure facade of pre-embedded steel slab of the present invention and wet seam, floor map.
In figure: 1, Precast T-Beam unit, 2, the wet seam of top board, 2-1, top board lower edge steel plate, 2-2, peg, 2-3, top board cast-in-situ concrete, 3, support, 4, abutment bent cap, 5 crossbeams, 6, pier shaft, 7, bearing.
The specific embodiment
By reference to the accompanying drawings, provide embodiments of the invention as follows, but the present invention does not limit to following examples.
As shown in Figure 9: the horizontal assembled Wavelike steel webplate combination T beam described in the present embodiment, comprises a plurality of Precast T-Beams unit 1 and contiguous prefabricated T beam element 1 is combined continuously to the crossbeam 5 of T beam by being longitudinally connected to form porous.Wherein Precast T-Beam unit 1 is prefabricated Wavelike steel webplate, adopts pre-tensioning system or post stretching.The wet seam 2 of top board of described two adjacent Precast T-Beam unit 1 laterally connects wet joint concrete or the wet joint concrete+steel plate that adopts routine.Connecting portion in described two adjacent Precast T-Beam unit 1 is that the lower surface of the wet seam 2 of top board is connected with top board lower edge steel plate 2-1, and is provided with a plurality of peg 2-2 at top board lower edge steel plate 2-1, and its effect is to make concrete and steel plate connect into integral body.Described peg 2-2 and top board lower edge steel plate 2-1 are welded into integral body.
The Specific construction step of above-mentioned horizontal assembled Wavelike steel webplate combination T beam is as follows:
First, as shown in Fig. 1,2,7: adopt conventional construction method construction bridge pier and pier shaft 6, at the top of pier shaft 6 construction abutment bent cap 4, its effect is to support Precast T-Beam unit 1.Pier shaft 6 tops do not need to arrange bent cap.At the upper end of pier shaft 6 erection support 7(as shown in Figure 7) or embedded bar, in bridge pier outside, set up support 3, support 3 can adopt steel pipe scaffold or shape steel bracket to set up.Precast T-Beam unit 1 is lifted on the support 3 of abutment pier shaft 6.
Secondly, as shown in Fig. 3,4,9: the top board transverse joint 2 that adopts the wet joint concrete of routine or the method for wet joint concrete+steel plate to construct between two adjacent Precast T-Beam unit.The top board lower edge steel plate 2-1 that is about to be connected with peg is fixed on the position, lower surface of the wet seam 2 of top board of adjacent two Precast T-Beam unit 1, adopts pre-embedded bolt (as shown in figure 11) to connect or welding (as shown in figure 10) connects.Form interim cross binding, and using this top board lower edge steel plate as the template of the wet seam 2 of top board, wet transverse reinforcement and the longitudinal reinforcement of connecing of colligation, the bottom board joint concrete 2-3 that wets.Treat that concrete reaches design strength, the wet seam 2 of top board has been constructed, and forms rock-steady structure.
Finally, as shown in Fig. 5,6,8: the crossbeam 5 of constructing between longitudinal two adjacent Precast T-Beam unit 1 connects into porous continuous beam across T beam by each.Middle cross beam 5 can adopt with pier shaft 6 and pour into integral body, forms continuous rigid frame; Also can adopt prefabrication system construction, then adopt splicing mode and single span T beam to connect into whole multispan continuous beam or the continuous rigid frame of forming.Last striking 3, construction completes.
The construction embodiment of taking when above-mentioned its superstructure of bridge for substructure employing uncovered beam bridge pier adopts horizontal assembled Wavelike steel webplate prestressed concrete T beam, for substructure, adopt the bridge that has bent cap bridge pier, its superstructure can be undertaken by horizontal spliced prestressed concrete T-shaped beam construction embodiment.
Claims (9)
1. a horizontal assembled Wavelike steel webplate combines T beam bridge, comprise a plurality of Precast T-Beams unit (1) and contiguous prefabricated T beam element is combined continuously to the crossbeam (5) of T beam by being longitudinally connected to form porous, it is characterized in that: the wet seam (2) of the top board lower surface in described two adjacent Precast T-Beam unit (1) is connected with top board lower edge steel plate (2-1).
2. horizontal assembled Wavelike steel webplate combination T beam bridge according to claim 1, is characterized in that: on described top board lower edge steel plate (2-1), be provided with a plurality of pegs (2-2).
3. horizontal assembled Wavelike steel webplate combination T beam bridge according to claim 1, is characterized in that: described Precast T-Beam unit (1) is prefabricated Wavelike steel webplate.
4. horizontal assembled Wavelike steel webplate combination T beam bridge according to claim 2, is characterized in that: described described peg (2-2) and top board lower edge steel plate (2-1) are for being welded to connect.
5. a construction method that realizes horizontal assembled Wavelike steel webplate combination T beam described in claim 1, it is characterized in that: first, construction bridge pier and abutment pier shaft (6) and construction abutment bent cap (4), set up support (3) in bridge pier outside, and Precast T-Beam unit (1) is arranged on support (3); Secondly, the wet seam (2) of top board that the top board lower edge steel plate (2-1) that is connected with peg is fixed on to adjacent two Precast T-Beam unit is located, and take this top board lower edge steel plate and build the wet joint concrete (2-3) of top board as support shuttering; Finally, at support (3) upper longitudinally cast pier head piece or prefabricated pier head piece (5), each is connected into porous continuous beam across Precast T-Beam unit.
6. the construction method of horizontal assembled Wavelike steel webplate combination T beam according to claim 5, is characterized in that: described top board lower edge steel plate (2-1) is connected by welding or bolt with described Precast T-Beam unit (1).
7. the construction method of horizontal assembled Wavelike steel webplate combination T beam according to claim 5, is characterized in that: on described abutment pier shaft (6), be provided with bearing (7) or embedded bar.
8. the construction method of horizontal assembled Wavelike steel webplate combination T beam according to claim 5, is characterized in that: described top board lower edge steel plate (2-1) adopts pre-embedded bolt to connect or is welded to connect the wet seam (2) of top board that is fixed on adjacent two precast H-beam unit and locates.
9. the construction method of horizontal assembled Wavelike steel webplate combination T beam according to claim 5, is characterized in that: described describedly at the upper longitudinally cast pier head piece of support (3) or prefabricated pier head piece, adopt splicing to connect into whole continuous beam on many supports or the continuous rigid frame of forming.
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| CN201410013725.4A CN103669193B (en) | 2014-01-13 | 2014-01-13 | A kind of laterally assembled Wavelike steel webplate combination T beam and construction method |
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| CN201410013725.4A CN103669193B (en) | 2014-01-13 | 2014-01-13 | A kind of laterally assembled Wavelike steel webplate combination T beam and construction method |
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| CN103669193B CN103669193B (en) | 2016-02-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103924505A (en) * | 2014-05-07 | 2014-07-16 | 河南省交通规划勘察设计院有限责任公司 | Prefabricated steel-concrete combination T beam with corrugated steel web and construction method |
| CN106638324A (en) * | 2016-12-30 | 2017-05-10 | 河南省交通规划设计研究院股份有限公司 | Construction method for ultra-high-performance concrete corrugated steel web composite box girder bridge |
| CN111778842A (en) * | 2020-08-13 | 2020-10-16 | 同济大学 | Connecting structure of steel plate beam |
| CN114414784A (en) * | 2022-03-30 | 2022-04-29 | 中交第一公路勘察设计研究院有限公司 | Bridge splicing joint vehicle-mounted deformation difference simulation test device and simulation method |
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| JP3798701B2 (en) * | 2002-01-23 | 2006-07-19 | 川田工業株式会社 | Steel girder bridge with concrete cross girder |
| KR20050018358A (en) * | 2003-08-12 | 2005-02-23 | 남기태 | Structure of continuous PSC beam with connection member and steel cross beam and bridge construction method using the same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924505A (en) * | 2014-05-07 | 2014-07-16 | 河南省交通规划勘察设计院有限责任公司 | Prefabricated steel-concrete combination T beam with corrugated steel web and construction method |
| CN103924505B (en) * | 2014-05-07 | 2016-08-24 | 河南省交通规划设计研究院股份有限公司 | Use prefabricated steel-concrete combination T beam and the construction method of Wavelike steel webplate |
| CN106638324A (en) * | 2016-12-30 | 2017-05-10 | 河南省交通规划设计研究院股份有限公司 | Construction method for ultra-high-performance concrete corrugated steel web composite box girder bridge |
| CN111778842A (en) * | 2020-08-13 | 2020-10-16 | 同济大学 | Connecting structure of steel plate beam |
| CN114414784A (en) * | 2022-03-30 | 2022-04-29 | 中交第一公路勘察设计研究院有限公司 | Bridge splicing joint vehicle-mounted deformation difference simulation test device and simulation method |
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| CN103669193B (en) | 2016-02-03 |
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