CN107178040A - A kind of bridge structure reinforces mould and reinforcement means - Google Patents
A kind of bridge structure reinforces mould and reinforcement means Download PDFInfo
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- CN107178040A CN107178040A CN201710052444.3A CN201710052444A CN107178040A CN 107178040 A CN107178040 A CN 107178040A CN 201710052444 A CN201710052444 A CN 201710052444A CN 107178040 A CN107178040 A CN 107178040A
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 28
- 238000009415 formwork Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 210000003518 stress fiber Anatomy 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 239000004567 concrete Substances 0.000 claims description 62
- 239000011094 fiberboard Substances 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000008439 repair process Effects 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 241000486406 Trachea Species 0.000 claims 1
- 210000003437 trachea Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000007596 consolidation process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 210000003205 muscle Anatomy 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Mould and reinforcement means are reinforced the invention discloses a kind of bridge structure, bridge structure, which reinforces mould, includes U-shaped formwork, top plate, inflatable packer and inflator pump, several inflatable packers are laid on bottom plate in U-shaped formwork, each inflatable packer is connected by tracheae with inflator pump, top plate is placed on inflatable packer, the bottom plate of U-shaped formwork is provided with some inflating air pipe through-holes, and U-shaped formwork is fixed on the bottom surface of bridge structure to be reinforced by high-strength bolt by U-shaped formwork open circumferential provided with one group of bolt mounting holes.Bridge structure reinforcement means is mated formation for one or equally distributed a plurality of pre-stress fibre plate first is fixedly mounted in the bottom surface of bridge structure to be reinforced, then with above-mentioned bridge structure reinforcing mould covers the reinforced concrete of pre-stress fibre plate.Prestressed consolidation technology is combined by the present invention with increasing section reinforcement technique, can give full play to both advantages, the rigidity and bearing power increase effect for bridge structure are obvious.
Description
Technical field
The present invention relates to the reinforcement technique field that builds a bridge, specifically a kind of bridge structure reinforces mould and reinforcing side
Method.
Background technology
Bridge structure generally occurs that amount of deflection increases with the growth of use time, the problems such as bearing capacity, Stiffness, and
Need to take the measures such as reinforcing due to the qualitative problems of construction existed in various degree or by the influence of natural calamity.Pass
The reinforcement means of system mainly has：Section-increased method, reinforced with external steel encased, external strengthening method by bonding steel plate, paste fibre sheet material method for strengthening,
Prestressing, setting support method for strengthening, crack repairing method and gunite concrete method for strengthening etc..Traditional reinforcement means is basic
Common reinforcing problem is can solve the problem that, but there is also some problems.Reinforcement method of enlarging section can effectively improve the rigidity of structure and
Bearing capacity, but it belongs to a kind of passive enforcement mode, and dead load increase is larger；Reinforced with external steel encased and exterior glues the steel are reinforced
Method working procedure is relatively complicated, and cost is high, and maintenance cost is high, and corrosion resistance is poor, does not prevent fires, and destruction is often bond damage,
Not only the intensity of steel can not be fully played, and designer is difficult for the estimation of bearing capacity；Fibre sheet material is certainly
Heavy and light, tensile strength are high, and corrosion resistance is strong, easy construction, but unobvious to the raising of the rigidity of structure, to cracking structure
Consolidation effect is not obvious, and the raising to bearing capacity is also relatively limited；Raising of the prestressing to structural bearing capacity is more bright
Aobvious, the raising to the rigidity of structure is relatively small；Setting support method for strengthening can reduce structure across footpath, effectively improve the rigidity of structure
And bearing capacity, but to change the stress system of structure, constructional difficulties, especially for bridge structure, setting support method for strengthening hardly possible
To realize；Crack repairing method for the security performance of building and the effect of being improved to some extent of the durability of service life,
But the raising for the rigidity of structure and bearing capacity has little significance；Gunite concrete method for strengthening constructional difficulties, quality is difficult to ensure that, is increased
Plus concrete thickness is limited, the raising effect for the rigidity of structure and bearing capacity is not obvious.As can be seen here, reinforcing traditional at present
Method all has inherent shortcoming in various degree, and the reinforcing problem of existing highway bridge structure often relates to many aspects, single
Reinforcement means be difficult to meet bridge structure safeguard, the combination property requirement of rigidity and bearing power increase.
The content of the invention
The purpose of the present invention is that there is provided a kind of bridge structure reinforcing mould for above-mentioned deficiency of the prior art.
It is firm that raising bridge structure is combined it is a further object of the present invention to provide a kind of use prestressing force and increasing section
The bridge structure reinforcement means of degree and bearing capacity.
The purpose of the present invention is achieved through the following technical solutions：
A kind of bridge structure reinforces mould, and the reinforcing mould includes U-shaped formwork, top plate, inflatable packer and inflator pump, the U-shaped mould
Several inflatable packers are laid on bottom plate in shell, each inflatable packer is connected by tracheae with the inflator pump, and the top plate is put
In on the inflatable packer, the bottom plate of the U-shaped formwork is provided with some inflating air pipe through-holes, and the U-shaped formwork open circumferential is provided with
The U-shaped formwork, the bottom surface of bridge structure to be reinforced is fixed on by high-strength bolt by one group of bolt mounting holes.Inflatable packer is length
One or more inflatable packers can be set in square inflatable packer, U-shaped formwork, each inflatable packer sets an inflation inlet, multiple inflations
Pad can share an inflator pump.
In further design of the invention, heating plate is additionally provided with above-mentioned top plate.When construction temperature is relatively low or requires
During newly-increased concrete rapid curing, the heating plate set by opening above top plate carries out rise temperature and promotes newly-increased coagulation
Native rapid curing.
In further design of the invention, above-mentioned top plate uses the material for having rigidity big and being easy to from concrete demoulding
Matter is made, for example：High rigidity plastics, light aluminum alloy or fibre reinforced composites etc..
In design of the invention further, the contact surface of above-mentioned U-shaped formwork and the bottom surface of bridge structure to be reinforced it
Between be provided with rubber blanket, beam bottom is tightly combined with U-shaped formwork top edge contact surface.
A kind of bridge structure reinforcement means, the reinforcement means is reinforced with increasing section using fiberboard prestressed reinforcement and mutually tied
Close progress and improve bridge structure rigidity to be reinforced and bearing capacity.
In further design of the invention, this method is first in the bottom surface fixed installation one of bridge structure to be reinforced
Or a plurality of pre-stress fibre plate uniformly arranged, then mated formation with above-mentioned bridge structure reinforcing mould and cover pre-stress fibre plate
Reinforced concrete.
In design of the invention further, this method is comprised the following steps that：
1）Treat reinforcement bridge structure basal surface to be handled, carburization zone, laitance layer and dabbing are removed, to fiberboard to be pasted
Bottom surface portion repair and levelling；Whether the processing to old concrete surface is appropriate, effective, is directly connected to new and old coagulation
The adhesive property of soil, the carburization zone of old concrete, laitance layer should be cut, old concrete is exposed solid surface, and have
Certain roughness, then carries out ash disposal processing to it, and fiberboard part to be pasted is carried out to repair and levelling.
2）By fiberboard fixing end anchorage and stretching end hold-down support be separately fixed at bridge structure bottom surface anchored end and
Stretching end, and conserved.
3）Fiberboard fixing end is fixed on fixing end anchorage, bondline thickness is smeared on fiberboard and is less than 2cm structures
Glue, the other end is fixed with stretching end anchorage chuck, and tensioning is carried out to fiberboard, by stretching end anchor when reaching the prestress value of setting
Tool chuck is fixed on stretching end anchorage bearing；Apply prestress value to fiberboard unsuitable excessive, in structural strengthening is ensured
Realize that anchor force is decentralized on the basis of always prestressed, anchor force and stress concentration of the reduction fiberboard at the anchoring of beam bottom have
Beneficial to being effectively ensured for anchoring property, while being conducive to reducing fiberboard loss of prestress and relaxation.
4）After after the hardened structure adhesive curing of pre-stress fibre, on pre-stress fibre plate both sides, pacify on the bottom surface of bridge structure
Dress reinforces the U-shaped formwork of mould, and fiberboard is in the U-shaped formwork centre position, to the bridge of the U-shaped formwork covering
Body structure surface and fibreboard surface are surface-treated.
5）From the end of U-shaped formwork to its internal concrete perfusion material, when groundwater increment reaches setting value, open described
Inflator pump is inflated into inflatable packer, make top plate support concrete rise and with old concrete material.
6）Wait irrigate it is concrete curing after, remove the reinforcing mould.Check whether U-shaped formwork, inflatable packer, top plate go out
Now damage, deform or damage, if not provided, reusable.
In further design of the invention, it is to the bridge structure surface treatment in the reinforcing mould in step 4
Spray interfacial agents or brush boundary mortar；The method being surface-treated to fibreboard surface in the reinforcing mould is in fiber
Plate lower surface brushes interface glue.
In further design of the invention, concrete described in step 5 can be mixed using normal concrete or fiber
The polytype concrete materials such as solidifying soil or slightly expanded concrete, should select suitable type and proportioning according to actual demands of engineering.
Normal concrete is cheap, feeding is convenient, construction skill is ripe, does not have the reinforcing of particular/special requirement available for for beam bottom crack
In engineering；Fiber concrete has superhigh tenacity, excellent control of crack width ability, hypotonicity, good durability etc.
Excellent properties, applied to being effectively reduced beam bottom crack in structural fortification；Slightly expanded concrete is added in concrete
Certain swelling agent, makes concrete produce certain expansion during aquation, makes up the contraction of concrete, is applied to the present invention
In, it is in before curing in the U-shaped formwork of relative closure due to increasing concrete newly, microdilatancy characteristic can further improve newly-increased mixed
Adhesive property between solidifying soil and old concrete.The concrete can configure a certain amount of reinforcing bar as needed, give full play to steel
The advantage that muscle tensile strength is high, modulus of elasticity is big, while the appearance and development in crack in newly-increased concrete can be limited, is further carried
The rigidity and bearing capacity of high bridge structure.
The present invention has beneficial effect following prominent：
1st, the present invention using fiberboard apply prestressing force, give full play to fiberboard from heavy and light, tensile strength height, corrosion resistance, resist
The superperformances such as pinking, impact resistance, by putting fiberboard in beam base fabric and applying prestressing force, can effectively closed beam bottom both damaged
Wound, improves the rigidity and bearing capacity of bridge structure.
2nd, fiberboard width of the present invention is determined according to factors such as deck-sidings, and fiberboard can be one, can also
It is uniformly distributed to be a plurality of at beam bottom, it is ensured that the prestressing force applied on beam bottom uniform force, every fiberboard is without too big, it is ensured that fine
Tie up plate anchoring good, be conducive to reducing loss of prestress and long-term relaxation；However, overall prestressing force degree can meet bridge
The raising demand of girder construction rigidity and bearing capacity.
3rd, the present invention use reinforce mould be made up of U-shaped formwork, top plate and inflatable packer, can increase newly it is concrete curing before
Support force is provided, effective guarantee increases the formation of the compactness and its cohesive force between old concrete structure of concrete newly, and
Easy construction, it is quality controllable.
4th, prestressed consolidation technology is combined by the present invention with increasing section reinforcement technique, can give full play to both excellent
Gesture, applies after prestressing force, bridge structure has a certain degree of " arch " effect, and bridge structure lower concrete is split to fiberboard
It is sewed with a certain degree of closure function；Certain thickness concrete material is set up again in the soffit of arranged fiberboard, is increased
Big beam body depth of section, it is significant for the rigidity and bearing capacity that improve bridge structure.The present invention is for bridge structure
Rigidity and bearing power increase effect substantially, constructing operation is more convenient, quality controllable, can be widely used for different types of rridges structural strengthening
In improvement project.
Brief description of the drawings
Fig. 1 is that embodiment jackshaft beam structure strengthening mould reinforces seating side cross section structure diagram.
Fig. 2 is that embodiment jackshaft beam structure strengthening mould reinforces installation cross section view.
Fig. 3 is that embodiment jackshaft beam structure strengthening installs overall schematic.
Fig. 4 is fiberboard fixing end anchor device structure schematic diagram in embodiment.
Fig. 5 is fiberboard stretching end anchorage schematic diagram in embodiment.
In figure, 1-bridge structure；2-fiberboard；3-inflatable packer；4-top plate；5-inflation tracheae；6-inflator pump；
7-reinforcing bar；8-U-shaped formwork；9-high-strength bolt；10-reinforce mould；11-fixing end anchorage；12-stretching end fixes branch
Seat；13-fixing end anchorage bottom plate；14-fixing end anchorage upper cover plate；15-stretching end anchorage chuck；16-stretching end anchor
Has bearing.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described:
Referring to Fig. 1~Fig. 5, a kind of bridge structure reinforces mould 10, and the reinforcing mould 10 includes U-shaped formwork 8, top plate 4, inflatable packer
3 and inflator pump 6, several inflatable packers 3 are laid on the bottom plate in U-shaped formwork 8, and each inflatable packer 3 is connected by tracheae with inflator pump 6
Connect, top plate 4 employs high rigidity modeling using having rigidity big and being easy to be made from the material of concrete demoulding in the present embodiment
Material, it is ensured that concrete does not produce big deformation after pouring into；Top plate 4 is placed on inflatable packer 3, and the bottom plate of U-shaped formwork 8 fills provided with some
Heating plate is additionally provided with the through hole of gas tracheae 5, top plate 4, the U-shaped open circumferential of formwork 8 passes through high-strength spiral shell provided with one group of bolt mounting holes
U-shaped formwork 8 is fixed on the bottom surface of bridge structure 1 to be reinforced by bolt 9, and U-shaped formwork 8 connects with the bottom surface of bridge structure 1 to be reinforced
Rubber blanket is provided between contacting surface.
A kind of bridge structure reinforcement means, the reinforcement means is reinforced with increasing section using fiberboard prestressed reinforcement and mutually tied
Close progress and improve bridge structure rigidity to be reinforced and bearing capacity.First bridge structure 1 to be reinforced bottom surface fixed installation one or
Equally distributed a plurality of pre-stress fibre plate 2, is then mated formation with above-mentioned bridge structure reinforcing mould 10 and covers pre-stress fibre plate 2
Reinforced concrete.Comprise the following steps that：
1）Treat the basal surface of reinforcement bridge structure 1 to be handled, carburization zone, laitance layer and dabbing are removed, to fiberboard 2 to be pasted
Bottom surface portion carry out repair and it is levelling.
2）The fixing end anchorage 11 of fiberboard 2 and stretching end hold-down support 12 are separately fixed at bridge knot with high-strength bolt 9
The anchored end and stretching end of the bottom surface of structure 1, and conserved；Referring to accompanying drawing 4,5, fixing end anchorage 11 is monoblock type anchorage, is divided into
Two parts, are fixed on the beam bottom of bridge structure 1 by fixing end anchorage bottom plate 13 first up and down, are then placed in fiberboard 2 reserved
Groove in, then cover part fixing end anchorage upper cover plate 14, top and the bottom connected, it is ensured that fiberboard 2 is not in
Slide；Stretching end anchorage is from separate type anchorage to facilitate the tensioning to fiberboard 2, and stretching end anchorage is by anchorage chuck, fixation
Bearing and high-strength bolt composition.
3）The fixing end of fiberboard 2 is fixed on fixing end anchorage 11, bondline thickness is smeared on fiberboard 2 and is less than 2cm
Structure glue, the other end is fixed with stretching end anchorage chuck 15, and tensioning, tensioning to setting are carried out by jack pair fiberboard 2
Stretching end anchorage chuck 15 is fixed on stretching end anchorage bearing 16 during prestress value；Fiberboard 2 uses a plurality of at beam bottom
It is 3 in embodiment, is uniformly distributed arrangement.Due to fiberboard 2 beam bottom using it is a plurality of, arrangement is uniformly distributed, so to fiber
The prestress value that plate 2 is applied is unsuitable excessive, and anchoring property is easy to ensure, while being conducive to reducing loss of prestress and relaxing existing
As.Can be using classification, the method for repeatedly stretching, to eliminate the initial void between each part.Fiberboard 2 has from heavy and light, resisted
The superperformances such as tensile strength height, corrosion resistance, shock resistance, impact resistance, in advance should by putting fiberboard 2 in beam base fabric and applying
Power, can close beam bottom crack, effectively improve the rigidity and bearing capacity of bridge structure.It can be adopted when applying prestressing force to fiberboard 2
With multiple, grading tension method, to eliminate the initial void between each part.
4）After after the structure adhesive curing of pre-stress fibre plate 2, on the both sides of pre-stress fibre plate 2, on the bottom surface of bridge structure 1
The U-shaped formwork 8 for reinforcing mould 10 is installed, fiberboard 2 is in the U-shaped centre position of formwork 8, the bridge structure covered to U-shaped formwork 8
Surface spraying interfacial agents brush boundary mortar processing, to the surface of fiberboard 2 brush the surface treatment of interface glue.
5）In the both sides correct position bar planting of 1 lower surface fiberboard of girder construction 2, steel wire is tied up in bar planting, passes through hangs muscle steel
Reinforcing bar 7 is hung in correct position by silk.From the end of U-shaped formwork 8 to fiber concrete is irrigated inside it, when groundwater increment reaches setting
During value, open inflator pump 6 and inflated into inflatable packer 3, the support of top plate 4 fiber concrete and rise and connect with old concrete material
Touch；Inflatable packer 3 is that multiple inflatable packers 3 are set in rectangle, U-shaped formwork 8, and each inflatable packer 3 has an inflation inlet, by inflator pump
6 carry out simultaneously, constant speed inflation, as far as possible ensure top plate 4 rise when keep level.
When construction temperature is relatively low or requires newly-increased concrete rapid curing, side sets heating plate on the top plate 4, by rising
High-temperature promotes newly-increased concrete rapid curing.
6）Wait after the fiber concrete solidification irrigated, remove and reinforce mould 10.Institute's concrete perfusion can use common coagulation
The polytype coagulation material such as soil, superhigh tenacity concrete, slightly expanded concrete, should select suitable class according to actual demands of engineering
Type and proportioning.Remove and reinforce after mould 10, check whether that appearance is damaged, deforms or damaged, if not provided, it is reusable, be
It is easy to remove, one layer of mineral not reacted with concrete can be brushed on the U-shaped side of formwork 8 and top plate 4 in a pre-installation
Oil or releasing agent.
Fiberboard 2 has from superperformances such as heavy and light, tensile strength height, corrosion resistance, shock resistance, impact resistances, but one
As in the case of modulus of elasticity it is relatively low, by fiberboard 2 apply prestressing force can give full play to the high characteristic of its tensile strength.It is right
Fiberboard 2 applies after prestressing force, and bridge structure 1 has a certain degree of " arch " effect, to bridge structure lower concrete crack
There is a certain degree of closure function.Certain thickness concrete material is set up again in the soffit of arranged fiberboard 2, is increased
Beam body depth of section, it is significant for the rigidity and bearing capacity that improve bridge structure.Newly-increased concrete and old concrete
Between and the adhesive property between newly-increased concrete and fiberboard 2 be directly connected to newly-increased concrete and can play due work
With the present invention brushes interfacial agents sand respectively by carrying out dabbing to contact surface in new-old concrete contact surface and the bottom surface of fiberboard 2
Slurry and interface glue, it is ensured that newly-increased adhesive property good between concrete and old concrete and fiberboard 2, meanwhile, newly-increased mixed
Solidifying soil material provides support force before solidifying with specific U-shaped formwork 8, top plate 4 and inflatable packer 3, can the newly-increased concrete of effective guarantee
Compactness, easy construction is quality controllable.The present invention using prestressing force and increasing section be combined raising bridge structure rigidity and
The high efficiency method of bearing capacity, can give full play to the advantage of prestressing and increasing section method for strengthening, for there is damage
Structure can realize effective reparation of the existing damage of structure by prestressing force, and original structure can be greatly improved using increasing section
Effective rigidity and bearing capacity.
Above is presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function is made
During with scope without departing from technical solution of the present invention, protection scope of the present invention is belonged to.
Claims (9)
1. a kind of bridge structure reinforces mould, it is characterised in that the reinforcing mould（10）Including U-shaped formwork（8）, top plate（4）、
Inflatable packer（3）And inflator pump（6）, the U-shaped formwork（8）Several inflatable packers are laid on interior bottom plate（3）, each inflatable packer
（3）Pass through tracheae and the inflator pump（6）Connection, the top plate（4）It is placed in the inflatable packer（3）On, the U-shaped formwork（8）
Bottom plate be provided with some inflation tracheaes（5）Through hole, the U-shaped formwork（8）Open circumferential passes through height provided with one group of bolt mounting holes
Strength bolt（9）By the U-shaped formwork（8）It is fixed on the bottom surface of bridge structure to be reinforced.
2. bridge structure according to claim 1 reinforces mould, it is characterised in that the top plate（4）On be additionally provided with heating
Piece.
3. bridge structure according to claim 1 reinforces mould, it is characterised in that the top plate（4）Moulded using high rigidity
Material or light aluminum alloy or fibre reinforced composites are made.
4. bridge structure according to claim 1 reinforces mould, it is characterised in that the U-shaped formwork（8）With bridge to be reinforced
Rubber blanket is provided between the contact surface of the bottom surface of girder construction.
5. a kind of bridge structure reinforcement means, it is characterised in that the reinforcement means is cut using fiberboard prestressed reinforcement with increase
Face reinforcing is combined progress and improves bridge structure rigidity to be reinforced and bearing capacity.
6. bridge structure reinforcement means according to claim 5, it is characterised in that this method is first in bridge structure to be reinforced
（1）Bottom surface be fixedly mounted one or equally distributed a plurality of pre-stress fibre plate（2）, then with described in claim 1-4
Bridge structure reinforces mould（10）Mat formation and cover pre-stress fibre plate（2）Reinforced concrete.
7. bridge structure reinforcement means according to claim 6, it is characterised in that this method is comprised the following steps that：
1）Treat reinforcement bridge structure（1）Basal surface is handled, and carburization zone, laitance layer and dabbing is removed, to fiber to be pasted
Plate（2）Bottom surface portion carry out repair and it is levelling；
2）By fiberboard（2）Fixing end anchorage（11）With stretching end hold-down support（12）It is separately fixed at bridge structure（1）Bottom surface
Anchored end and stretching end, and conserved；
3）By fiberboard（2）Fixing end is fixed on fixing end anchorage（11）On, in fiberboard（2）Upper smearing bondline thickness is less than
2cm structure glues, the other end and stretching end anchorage chuck（15）It is fixed, to fiberboard（2）Tensioning is carried out, the prestressing force of setting is reached
By stretching end anchorage chuck during value（15）It is fixed on stretching end anchorage bearing（16）On；
4）Treat pre-stress fibre plate（2）After structure adhesive curing, in pre-stress fibre plate（2）Both sides, in bridge structure（1）Bottom surface
Upper install reinforces mould（10）The U-shaped formwork（8）, fiberboard（2）In the U-shaped formwork（8）Centre position, to described
U-shaped formwork（8）The bridge structure surface of covering and fiberboard（2）Surface is surface-treated；
5）From U-shaped formwork（8）End, when groundwater increment reaches setting value, is filled to its internal concrete perfusion material described in unlatching
Air pump（6）To inflatable packer（3）Interior inflation, makes top plate（4）Hold in the palm concrete rise and with old concrete material；
6）Wait irrigate it is concrete curing after, remove the reinforcing mould（10）.
8. bridge structure reinforcement means according to claim 7, it is characterised in that to the reinforcing mould in step 4（10）
Interior bridge structure surface treatment is spraying interfacial agents or brushes boundary mortar；To the reinforcing mould（10）Interior fiberboard（2）
The method that surface is surface-treated is in fiberboard（2）Lower surface brushes interface glue.
9. bridge structure reinforcement means according to claim 7, it is characterised in that concrete described in step 5 can be used
Normal concrete or fiber concrete or slightly expanded concrete, the concrete can configure a certain amount of reinforcing bar as needed（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052444.3A CN107178040B (en) | 2017-01-24 | 2017-01-24 | A kind of bridge structure reinforces mold and reinforcement means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052444.3A CN107178040B (en) | 2017-01-24 | 2017-01-24 | A kind of bridge structure reinforces mold and reinforcement means |
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| Publication Number | Publication Date |
|---|---|
| CN107178040A true CN107178040A (en) | 2017-09-19 |
| CN107178040B CN107178040B (en) | 2018-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775160A (en) * | 2018-07-02 | 2018-11-09 | 广东工业大学 | A kind of glue filling device and method for post stretching |
| CN116512639A (en) * | 2023-06-26 | 2023-08-01 | 北京玻钢院复合材料有限公司 | Composite material hand lay-up forming anti-drop tool and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0771089A (en) * | 1993-09-02 | 1995-03-14 | Toray Ind Inc | Frp-reinforced concrete structure and manufacture thereof |
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| CN105887702A (en) * | 2016-04-20 | 2016-08-24 | 武汉理工大学 | Method for reinforcing concrete beam by prestressed carbon fiber plate and steel-concrete |
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| JPH0771089A (en) * | 1993-09-02 | 1995-03-14 | Toray Ind Inc | Frp-reinforced concrete structure and manufacture thereof |
| JPH0932313A (en) * | 1995-07-19 | 1997-02-04 | Kajima Corp | Reinforcing work of concrete beam |
| CN101122177A (en) * | 2007-09-04 | 2008-02-13 | 华南理工大学 | Usage method of prestressed thin fiber board in concrete architecture |
| CN203320428U (en) * | 2013-05-27 | 2013-12-04 | 华侨大学 | Novel reinforcing device of reinforced concrete bridge and bridge deck |
| CN104328747A (en) * | 2013-07-23 | 2015-02-04 | 金辉 | Reinforcement method for single beam bearing of bridge and construction method thereof |
| CN204551288U (en) * | 2015-02-12 | 2015-08-12 | 武汉二航路桥特种工程有限责任公司 | The fixed protection instrument of composite fiber plate |
| CN105887702A (en) * | 2016-04-20 | 2016-08-24 | 武汉理工大学 | Method for reinforcing concrete beam by prestressed carbon fiber plate and steel-concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775160A (en) * | 2018-07-02 | 2018-11-09 | 广东工业大学 | A kind of glue filling device and method for post stretching |
| CN116512639A (en) * | 2023-06-26 | 2023-08-01 | 北京玻钢院复合材料有限公司 | Composite material hand lay-up forming anti-drop tool and use method thereof |
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| CN107178040B (en) | 2018-12-28 |
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