CN110055907A - A kind of concrete freely-supported hollow slab girder proposes load ruggedized construction - Google Patents
A kind of concrete freely-supported hollow slab girder proposes load ruggedized construction Download PDFInfo
- Publication number
- CN110055907A CN110055907A CN201910383922.8A CN201910383922A CN110055907A CN 110055907 A CN110055907 A CN 110055907A CN 201910383922 A CN201910383922 A CN 201910383922A CN 110055907 A CN110055907 A CN 110055907A
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- Prior art keywords
- joist
- hollow slab
- slab girder
- bridge
- ruggedized construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 32
- 239000004567 concrete Substances 0.000 title claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 238000010008 shearing Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000005728 strengthening Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011374 ultra-high-performance concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to bridge strengthening technical field of structures, propose load ruggedized construction in particular to a kind of concrete freely-supported hollow slab girder.Including more along the spaced apart joist of direction across bridge；The joist is the mounting structures that hollow slab girder lower end surface is anchored in by anchor structure, joist along bridge to arrangement.Ruggedized construction of the invention can be good at reinforcing old hollow slab girder, improve the anti-bending strength of hollow slab girder, and structure is simple, easy for construction, and versatility is good, have great promotional value.
Description
Technical field
The present invention relates to bridge strengthening technical field of structures, propose load in particular to a kind of concrete freely-supported hollow slab girder and reinforce
Structure.
Background technique
Precast hollow slab bridge is because the excellent honest and clean, many advantages such as construction is convenient, standardization level is high of simple process, cost are in bridge
It is used widely in the bridge of engineering field especially Mid and minor spans, has absolute advantage in the quantity accounting of bridge.With
The growth of service life, cored slab may occur because of reasons such as design, construction, management and maintenances bending resistance, shearing resistance etc. carrying
Hypodynamic situation drastically influences safety and the durability of bridge, needs to propose load reinforcing progress comprehensive treatment.For itself
The preferable cored slab of state, with economic rapid development, intrinsic load and road occupation situation be unsatisfactory for it is existing
Transport need and roading in the case of, mostly also face mention carry even remove rebuild situation.
Dismounting reconstruction is carried out for cored slab in good condition, the wasting of resources of human and material resources, financial resources is will cause, causes
Traffic prolonged stoppage influences the public credibility of local government, is also easy to produce negative social influence；A large amount of object of removing will also result in environment
Pollution.
It is reinforced for mentioning carrying, conventional bridge, which mentions load reinforcement means, at present mainly increasing section and arrangement of reinforcement method for strengthening, glues
Reinforcing bar, steel plate, carbon fiber method are pasted, structure stress system method for strengthening, external prestressed strengthening method etc. are changed.Due to hollow slab girder cross
Mutually closely between, a possibility that limiting web lateral reinforcement, main reinforcing space is in beam bottom, such as base plate sticking steel plate
Or carbon fibre material, bottom plate applies prestressing force etc., but is mainly enough handled for a certain disease, and consolidation effect is limited,
Complicated construction technique, difficulty are larger.
Summary of the invention
The purpose of the present invention is to solve the deficiency of the above background technology, provides a kind of concrete freely-supported hollow slab girder and mentions
Carry ruggedized construction.
The technical solution of the present invention is as follows: a kind of concrete freely-supported hollow slab girder proposes load ruggedized construction, it is characterised in that: including
More along the spaced apart joist of direction across bridge；The joist is the support knot that hollow slab girder lower end surface is anchored in by anchor structure
Structure, joist along bridge to arrangement,
The further anchor structure includes the pull rod for being vertically arranged in hollow slab girder；The pull rod upper end passes through anchor
Board group part is fixed on hollow slab girder upper end, and lower end passes through joist and is fixedly connected with joist.
The further pull rod is the vertical bar for the hinge seam being vertically arranged on hollow slab girder between adjacent vacant core
Shape structure.
The further joist includes more joist unit pieces, and more joist unit pieces join end to end, and to form support hollow
The mounting structures of plate-girder.
It is offered on the further joist unit piece along the prestress hole along bridge to perforation；It is worn in the prestress hole
Equipped with presstressed reinforcing steel, adjacent joists unit piece is connected as one by presstressed reinforcing steel.
At least two presstressed reinforcing steels are provided on the further joist unit piece, two presstressed reinforcing steels are to be arranged in support
The direction across bridge two sides of pull rod are symmetrically arranged in centered on pull rod on beam element part.
The further joist unit piece is provided with to one end along the boss along bridge to outwardly convex along bridge, along bridge to another
One end be provided with corresponding boss along bridge to the card slot being recessed inwardly, adjacent joists unit piece is fastened in card slot by boss
It is fixed with one.
It further include further the adhesive layer for being bonded in hollow slab girder lower end surface, joist upper surface.
Offered on the further hollow slab girder lower end surface it is multiple along bridge to spaced apart first shearing slot, support
Beam upper surface offer it is multiple along bridge to it is spaced apart second shearing slot；The adhesive layer is filled in the first shearing slot,
In gap between two shearing slots and hollow slab girder and joist.
The further first shearing slot and the second shearing slot interlaced arrangement, are not overlapped in the vertical direction.
Advantages of the present invention has: 1, by adding joist in hollow slab girder lower end surface, can effectively improve hollow slab girder
Anti-bending strength；
2, joist is increased newly in old hollow slab girder bottom, can make full use of original bridge structure, mixed economy is at low cost；
3, joist is that batch production is segmented prefabricated standard segment, reliable in quality, and construction site only needs assembled concatenation construction,
Site operation link is few, and it is convenient to construct, high-efficient；
4, different number and the joist unit piece of length can be assembled into the different across footpath structures such as 10m, 13m, 16m, 20m, energy
Enough realize standardized construction, and versatility greatly enhances；
5, joist preferably utilizes and plays the mechanical property of its material using high-strength materials such as UHPC；
6, the bearing capacity that old bridge is improved after reinforcing, can make old bridge meet the load of current standard specifications, avoid and change
A large amount of Demolition Constructions caused by requirement of the hollow slab girder because being unsatisfactory for new codes and standards in extension project save social resources,
It reduces environmental pollution.
Ruggedized construction of the invention can be good at reinforcing old hollow slab girder, improve the flexing resistance of hollow slab girder
Can, and structure is simple, easy for construction, versatility is good, has great promotional value.
Detailed description of the invention
Fig. 1: the present invention mentions the cross-sectional configuration schematic diagram for carrying ruggedized construction；
Fig. 2: Fig. 1 of the invention A-A view；
Fig. 3: joist cellular construction schematic diagram of the invention；
Fig. 4: joist unit piece splicing structure schematic diagram of the invention；
Fig. 5: of the invention mentioning carries ruggedized construction constructing structure schematic diagram；
Wherein: 1-hollow slab girder；1.1-the first shearing slot；
2-joists；2.1-joist unit pieces；2.2-prestress holes；2.3-boss；2.4-card slots；2.5-the second cuts
Power slot；3-pull rods；4-anchor slab components；5-presstressed reinforcing steels；6-adhesive layers；7-anchor poles；8-pull-up rod sets；9-lower pull rods
Set.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Mentioning for the present embodiment carries ruggedized construction for old hollow slab girder, by more in the lower end surface of hollow slab girder 1 arrangement
Root improves the anti-bending strength of hollow slab girder 1 along the spaced apart joist 2 of direction across bridge, joist 2 along bridge to arrangement, along bridge to two
End is separately fixed on the support of two neighboring bridge pier.
As shown in figs. 34, the joist 2 of the present embodiment includes more joist unit pieces 2.1, and more joist unit pieces 2.1 are first
Tail is connected to form the mounting structures of support hollow slab girder 1.Quantity by changing joist unit piece 2.1 can adjust entire support
The length of beam 2.
For the ease of the assembling of joist unit piece 2.1, the present embodiment is provided with card slot knot at the both ends of joist unit piece 2.1
Structure, as shown in figs. 34, joist unit piece 2.1 along bridge to one end be provided with along boss 2.3 from bridge to outwardly convex, along bridge to
The other end be provided with corresponding boss 2.3 along bridge to the card slot 2.4 being recessed inwardly, adjacent joists unit piece 2.1 passes through boss
2.3 are fastened in card slot 2.4 and are fixed with one by adhesive glue.
In addition, the present embodiment in order to which joist unit piece 2.1 to be completely fixed together, offers on joist unit piece 2.1
Along the prestress hole 2.2 along bridge to perforation, it is equipped with presstressed reinforcing steel 5 in prestress hole 2.2, adjacent joists unit piece 2.1 passes through
Presstressed reinforcing steel 5 is connected as one.When installation, by the presstressed reinforcing steel 5 that is arranged in prestress hole 2.2 by joist unit piece 2.1
Series connection is overall structure.
The joist 2 of the present embodiment is anchored in 1 lower end surface of hollow slab girder by anchor structure.As shown in Fig. 1~2 and 5, anchoring
Structure includes the pull rod 3 for being vertically arranged in hollow slab girder 1, and 3 upper end of pull rod is fixed on hollow slab girder 1 by anchor slab component 4
End, anchor slab component 4 are anchored at the upper surface of hollow slab girder 1 by anchor pole 7, and 3 upper end of pull rod passes through pull-up rod set 8 and anchor slab component
4 are fixedly connected, and lower end passes through joist 2 and is fixedly connected by lower drag link sleeve 9 with joist 2.
The pull rod 3 of the present embodiment during installation, needs to cut in advance in the hinge seam on hollow slab girder 1 between adjacent vacant core
Concrete, then pull rod 3 is installed, i.e. pull rod 3 is located in hinge seam, and anchor rod component 4 is fixed on adjacent two pieces of cored slabs, corresponding
Joist 2 be fixed on adjacent two pieces of cored slabs, the direction across bridge two sides of every piece of cored slab are separately fixed on two joists 2.
The present embodiment is provided at least two presstressed reinforcing steels 5 on joist unit piece 2.1, and two presstressed reinforcing steels 5 are to wear
The direction across bridge two sides of pull rod 3 are symmetrically arranged in centered on the pull rod 3 on joist unit piece 2.1.Such arragement construction stress
More rationally, structure is more stable.
When actual installation, need first to be fixed on joist 2 lower end surface of hollow slab girder 1, as shown in Fig. 1~2, the present embodiment
1 lower end surface of hollow slab girder, 2 upper surface of joist are provided with adhesive layer 6.The adhesive layer 6 of the present embodiment is the viscous of binder formation
Structure is closed, the adhesive requirement mobility used is strong, and cementability is good and mechanical property is not less than the material of former bridge, being capable of levelling original
Joist bottom surface and effectively bonding joist and former girder construction, the present embodiment is penetrative polymer mortar.
As shown in Fig. 2, in order to improve adhesive effect, the present embodiment offers multiple along suitable on 1 lower end surface of hollow slab girder
Bridge to it is spaced apart first shearing slot 1.1,2 upper surface of joist offer it is multiple along bridge to it is spaced apart second shearing slot
2.5, adhesive layer 6 is filled in the gap between the first shearing slot 1.1, second shearing slot 2.5 and hollow slab girder 1 and joist 2.
First shearing slot 1.1 and the second shearing 2.5 interlaced arrangement of slot, are not overlapped in the vertical direction.As shown in Fig. 2, the cloth of shearing slot
Setting on the one hand is to increase binder bond area, on the other hand improves the anti-shearing performance of adhesive layer.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of concrete freely-supported hollow slab girder proposes load ruggedized construction, it is characterised in that: including more along direction across bridge arranged for interval
Joist (2)；The joist (2) is the mounting structures that hollow slab girder (1) lower end surface is anchored in by anchor structure, joist (2)
It is separately fixed on two neighboring bridge pier to arrangement, and along bridge to both ends along bridge.
2. a kind of concrete freely-supported hollow slab girder as described in claim 1 proposes load ruggedized construction, it is characterised in that: the anchoring
Structure includes the pull rod (3) for being vertically arranged in hollow slab girder (1)；Pull rod (3) upper end is fixed on by anchor slab component (4)
Hollow slab girder (1) upper end, lower end pass through joist (2) and are fixedly connected with joist (2).
3. a kind of concrete freely-supported hollow slab girder as claimed in claim 2 proposes load ruggedized construction, it is characterised in that: the pull rod
It (3) is the vertical rod-like structure for the hinge seam being vertically arranged on hollow slab girder (1) between adjacent vacant core.
4. a kind of concrete freely-supported hollow slab girder as described in claim 2~3 is any proposes load ruggedized construction, it is characterised in that:
The joist (2) includes more joist unit pieces (2.1), and more joist unit pieces (2.1) join end to end to form support cored slab
The mounting structures of beam (1).
5. a kind of concrete freely-supported hollow slab girder as claimed in claim 4 proposes load ruggedized construction, it is characterised in that: the joist
It is offered on unit piece (2.1) along the prestress hole (2.2) along bridge to perforation；Pre- answer is equipped in the prestress hole (2.2)
Power muscle (5), adjacent joists unit piece (2.1) are connected as one by presstressed reinforcing steel (5).
6. a kind of concrete freely-supported hollow slab girder as claimed in claim 5 proposes load ruggedized construction, it is characterised in that: the joist
At least two presstressed reinforcing steels (5) are provided on unit piece (2.1), two presstressed reinforcing steels (5) are to be arranged in joist unit piece (2.1)
On pull rod (3) centered on be symmetrically arranged in the direction across bridge two sides of pull rod (3).
7. a kind of concrete freely-supported hollow slab girder as described in claim 5~6 is any proposes load ruggedized construction, it is characterised in that:
The joist unit piece (2.1) is provided with to one end along the boss (2.3) along bridge to outwardly convex along bridge, sets along bridge to the other end
Be equipped with corresponding boss (2.3) along bridge to the card slot (2.4) being recessed inwardly, adjacent joists unit piece (2.1) passes through boss
(2.3) it is fastened in card slot (2.4) and is fixed with one.
8. a kind of concrete freely-supported hollow slab girder as described in claim 1 proposes load ruggedized construction, it is characterised in that: further include gluing
Tie the adhesive layer (6) in hollow slab girder (1) lower end surface, joist (2) upper surface.
9. a kind of concrete freely-supported hollow slab girder as claimed in claim 7 proposes load ruggedized construction, it is characterised in that: described hollow
It is offered on plate-girder (1) lower end surface multiple along bridge, to spaced apart first shearing slot (1.1), joist (2) upper surface is opened up
Have it is multiple along bridge to it is spaced apart second shearing slot (2.5)；The adhesive layer (6) is filled in the first shearing slot (1.1),
In gap between two shearings slot (2.5) and hollow slab girder (1) and joist (2).
10. a kind of concrete freely-supported hollow slab girder as claimed in claim 8 proposes load ruggedized construction, it is characterised in that: described the
One shearing slot (1.1) and second shearing slot (2.5) interlaced arrangement, are not overlapped in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383922.8A CN110055907B (en) | 2019-05-08 | 2019-05-08 | Concrete simply supported hollow slab beam carrying reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910383922.8A CN110055907B (en) | 2019-05-08 | 2019-05-08 | Concrete simply supported hollow slab beam carrying reinforcing structure |
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| Publication Number | Publication Date |
|---|---|
| CN110055907A true CN110055907A (en) | 2019-07-26 |
| CN110055907B CN110055907B (en) | 2024-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910383922.8A Active CN110055907B (en) | 2019-05-08 | 2019-05-08 | Concrete simply supported hollow slab beam carrying reinforcing structure |
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| Country | Link |
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| CN (1) | CN110055907B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681156A (en) * | 2020-12-24 | 2021-04-20 | 湖南大学 | Reinforcing structure and reinforcing construction method of hollow slab beam |
| CN114197335A (en) * | 2021-12-28 | 2022-03-18 | 中交鹭建有限公司 | External prestress reinforcing structure of hollow slab beam bridge and construction method |
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| CN102635060A (en) * | 2012-05-02 | 2012-08-15 | 周劲宇 | Concrete hollow slab bridge reinforced by transverse steel beams |
| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Assembled plate girder bridge hinge joint reinforcing opposite-pulling device |
| CN103614975A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Shear connector reinforcing method for failed hinge joint of assembly-type hollow slab girder |
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| CN108374356A (en) * | 2018-05-10 | 2018-08-07 | 山东交通学院 | A kind of old hollow slab bridge of hinge seam longitudinal prestressing reinforcing single hole constructs and construction method |
| CN108411801A (en) * | 2018-05-10 | 2018-08-17 | 山东交通学院 | One kind reinforcing the old hollow slab bridge construction of single hole and construction method by real abdomen Bars In Poured Concrete Slab |
| CN210238317U (en) * | 2019-05-08 | 2020-04-03 | 中交第二航务工程局有限公司 | Concrete simply supported hollow slab beam carries reinforced structure |
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2019
- 2019-05-08 CN CN201910383922.8A patent/CN110055907B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635060A (en) * | 2012-05-02 | 2012-08-15 | 周劲宇 | Concrete hollow slab bridge reinforced by transverse steel beams |
| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Assembled plate girder bridge hinge joint reinforcing opposite-pulling device |
| CN103614975A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Shear connector reinforcing method for failed hinge joint of assembly-type hollow slab girder |
| CN203639840U (en) * | 2013-12-29 | 2014-06-11 | 西安公路研究院 | Hollow plate girder reinforcing structure based on steel plate concrete and unbonded prestressing tendons |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681156A (en) * | 2020-12-24 | 2021-04-20 | 湖南大学 | Reinforcing structure and reinforcing construction method of hollow slab beam |
| CN114197335A (en) * | 2021-12-28 | 2022-03-18 | 中交鹭建有限公司 | External prestress reinforcing structure of hollow slab beam bridge and construction method |
| CN114197335B (en) * | 2021-12-28 | 2024-05-03 | 中交鹭建有限公司 | Construction method of external prestress reinforcing structure of hollow slab beam bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110055907B (en) | 2024-03-22 |
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