CN110499716A - A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge - Google Patents
A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge Download PDFInfo
- Publication number
- CN110499716A CN110499716A CN201910751566.0A CN201910751566A CN110499716A CN 110499716 A CN110499716 A CN 110499716A CN 201910751566 A CN201910751566 A CN 201910751566A CN 110499716 A CN110499716 A CN 110499716A
- Authority
- CN
- China
- Prior art keywords
- steel
- steel bridge
- layer
- bridge deck
- fibre reinforced
- Prior art date
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 64
- 230000002787 reinforcement Effects 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 270
- 239000010959 steel Substances 0.000 claims abstract description 270
- 239000000835 fiber Substances 0.000 claims abstract description 72
- 238000005336 cracking Methods 0.000 claims abstract description 64
- 239000004567 concrete Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims description 56
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 34
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 27
- 239000004917 carbon fiber Substances 0.000 claims description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 27
- 238000003466 welding Methods 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000009408 flooring Methods 0.000 description 32
- 239000004744 fabric Substances 0.000 description 21
- 239000011374 ultra-high-performance concrete Substances 0.000 description 20
- 239000004411 aluminium Substances 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 239000003292 glue Substances 0.000 description 12
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 10
- 238000005728 strengthening Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- -1 reinforcing bar Chemical compound 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000006263 metalation reaction Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003313 weakening effect Effects 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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
A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge, it is characterized in that: it includes fatigue cracking steel bridge deck, fibre reinforced composites layer, shear connector, steel mesh and concrete layer, shear connector is set on the fibre reinforced composites layer, the fibre reinforced composites layer is laid with to the cracking position of fatigue cracking steel bridge deck, the steel mesh is placed on fatigue cracking steel bridge deck, the concrete layer is poured on fatigue cracking steel bridge deck, and covering shear connector, steel mesh is connect with fatigue cracking steel bridge deck.
Description
Technical field
The present invention relates to a kind of bridge structure reinforced for steel bridge deck, especially one kind to add fiber-reinforced layer solution
The composite reinforcement structure of Steel Bridge is split.
Background technique
Orthotropic Steel Bridge Deck since the advent of the world, with it from heavy and light, ultimate bearing capacity is big, applied widely, construction week
Phase is short, and deck-molding is low, beautiful design, by the favor of Bridge Design person, is particularly suitable for Large Span Bridges.But with service year
The growth of limit, since self structure rigidity is uneven, the Bridges in Our Country volume of traffic is big in addition, and overload is serious, and bridge local environment is disliked
Of inferior quality factor, drawback also increasingly highlight, and different fatigue cracking and two major diseases of damage of mating formation occurs in steel bridge deck.It is domestic
Built more famous Guangdong Humen Bridge girder is all made of steel box-girder, and floorings use Orthotropic Steel Bridge Deck, operation
All occur different degrees of fatigue damage, the even destruction of cracking disease shortly after, causes load carrying capacity of bridge, the traffic capacity big
It is big to reduce, it has to take freight weight limit, speed limit etc., while its service life also greatly shortens.For this two major disease, propose each
Kind Scheme of Strengthening, wherein patent " a kind of light-duty composite reinforcement structure without repairing fatigue cracking steel bridge deck " proposes band
There is the steel plate for welding short peg to be welded to and split floorings, while floorings weld short peg, finally pour very-high performance coagulation
Soil forms composite reinforcement structure, reaches reinforcement effect with this.
But there are still following problems for the structure: 1. since traffic flow is big, and overload is serious, and external environment is disliked
It is bad, the floorings that cracked are not reinforced, steel bridge deck further corrodes, the risk that cracking even destroys；2. former special
Sharp steel plate strip, which is welded to, has split floorings, cannot combine closely with floorings have been split, inevitable there are gap, there are corrosion risk,
And it cannot be with the common stress of original floorings；3. steel plate rod density is larger, bridge will increase certainly using excessive steel plate strip
Weight reduces bearing capacity；Ultra-high performance concrete used will generally carry out high-temperature steam curing, and working procedure is complicated；4. having cracked
A large amount of pegs are welded on steel bridge deck, can be introduced welding residual stress, or even form new crackle, further be weakened steel bridge deck
Bearing capacity.
Summary of the invention
The object of the present invention is to provide a kind of bondings reliably, fatigue resistance is good, easy construction kind is to fatigue cracking steel
Floorings ruggedized construction.
The technical solution adopted by the present invention to solve the technical problems is: it includes fatigue cracking steel bridge deck, fiber
Enhance composite layer, shear connector, steel mesh and concrete layer, shearing is set on the fibre reinforced composites layer
Connector, the fibre reinforced composites layer are laid with to the cracking position of fatigue cracking steel bridge deck, the steel mesh peace
It is placed on fatigue cracking steel bridge deck, the concrete layer is poured on fatigue cracking steel bridge deck, and is covered shearing and connected
Fitting, steel mesh are connect with fatigue cracking steel bridge deck.
The cracking position of the steel bridge deck of fatigue cracking of the invention is equipped with 2 or more fibre reinforced composites layers,
Shear connector is provided on steel bridge deck between adjacent fibre reinforced composites layer.
Concrete layer of the invention can also use lightweight aggregate concrete, and the aluminium strip of lighter in weight, can form in addition
Four kinds of schemes, ultra-high performance concrete+steel plate strip, ultra-high performance concrete+aluminium strip, lightweight aggregate concrete+steel plate strip, light bone
Material+aluminium strip.
Fibre reinforced composites layer of the invention includes fibre reinforced materials item, laths of metal, such as steel plate strip, carbon fiber
Lath, carbon fiber cloth are tieed up, the fibre reinforced materials item is located at fibre reinforced composites layer bottom end, and the laths of metal omits
Greater than fibre reinforced materials item, it is placed on fibre reinforced materials item；Fibre reinforced materials (such as carbon cloth CFRP), physics are special
Property be similar to cloth, can not be connect with Steel Bridge Deck using shear connector, fibre reinforced materials utilizes organic gel and floorings tight
It is close to paste, do not interspace, main purpose first is that prevent steel bridge deck from further corroding, second is that inhibit the crackle of Steel Bridge Deck into
The extension of one step.
Fibre reinforced composites layer of the invention can weld peg, steel bar end, T-steel, L according to steel plate strip, top surface
The shear connectors such as fashioned iron, PBL open pore steel plate；According to carbon fiber-reinforced plate, top surface can bond T-steel or T-type carbon fiber
Profile, L-type steel or L-type carbon fiber sectional material shear connector；According to carbon fiber cloth, it is contemplated that very thin thickness, thereon no longer
Shear connector is set.
The present invention is bonded in along direction across bridge by organic structure glue with the fibre reinforced composites layer of shear connector and has been cracked
Steel bridge deck top surface cooperates with ultra-high performance concrete bottom surface tension, to make up the deficiency of raw steel floorings fatigue cracking；By having
Machine structure gluing knot, it can be ensured that strengthen item and fitted closely with raw steel floorings, avoid gap, improve cooperative bearing between the two.
Fibre reinforced composites layer of the invention is equipped with one or more shear connector, and the fiber increases
Strong material and steel bridge deck are cementing;The laths of metal is slightly wider than fibrous reinforcing material, closely ties with FRP layers by cementing
Close, by welding, bolt or cementing with steel bridge deck ining conjunction with, such words not only can common stress, but also there is no gap can be with
Anti-corrosion;3 connectors are generally connect by the way of welding with laths of metal and floorings, can not be connected with fibre reinforced materials
It connects.
The fibre reinforced materials item of fibre reinforced composites of the present invention passes through cementing material and fatigue cracking Steel Bridge Deck
Plate tight bond, the shear connector pass through welding, the metal of bolt or cementing mode and fibre reinforced composites
Lath tight bond, and polishing grinding is carried out to steel bridge deck.
The length of fibre reinforced composites layer of the present invention is equal to the width of fatigue cracking steel bridge deck, and fiber reinforcement is multiple
Laths of metal can be equipped in condensation material layer, laths of metal is by being positioned at Steel Bridge Deck including welding, cementing, bolt connection type
On plate.
Shear connector of the invention includes peg, T-steel, angle steel, L-type steel, rebar connector, PBL open pore steel plate company
Fitting, T-type carbon fiber sectional material, L-type carbon fiber sectional material shear connector, shear connector are arranged in phase in fibre reinforced composites layer
Neighbour strengthens the gap area of lath.
Fibre reinforced composites layer of the invention can be made carbon cloth or CFRP strip is placed on fatigue cracking
It is used on steel bridge deck.
Steel mesh of the invention is multi-story steel mesh, and the steel mesh is divided into longitudinal and transverse bridge to two layers, wherein direction across bridge reinforcing bar
Upper layer, vertical bridge are arranged in steel bar arrangement in lower layer, binding form, reinforcing bar can be used in cross-point locations to reinforcing bar in longitudinal and transverse bridge
Net is located at the lower section and/or top of fibre reinforced composites layer；Steel mesh is by with adjacent bar spacing 20-70mm, staggeredly paving
If longitudinal reinforcement and transverse steel composition, bar diameter 8-16mm.
Concrete layer of the invention is equipped with wearing course, and wearing course includes bituminous concrete class and resinae.
The present invention reinforces original floorings, and using injecting glue mode filling cracks, steel bridge deck is protected in mopping.
The present invention is combined closely with steel plate has been split with FRP plate item (such as carbon cloth), solves steel plate strip and cracking floorings
Between voiding problem, while solving its etching problem that may be present.
The present invention can suitably reduce the quantity of steel plate strip, and the mixing that aluminium strip, or both also can be used uses, lath
Width should be slightly larger than FRP plate width, laths of metal (steel and/or aluminium strip), with steel bridge deck can be used welding (spot welding, entirely
Weldering), it is glued, and bolt form formation is reliably connected.Other concrete materials (such as lightweight aggregate concrete) can also be used, pass through
Arranging multiplayer reinforcing bar makes its tensile strength meet engine request, while reducing dead load, improves bearing capacity, working procedure
Simply, low in cost.
Steel bridge deck and laths of metal (steel and or aluminium strip) of the present invention do not use shear connector or use a small amount of peg, or
Person uses the shear connector form (fashioned iron, reinforcing bar, PBL connector) etc. of a small amount of bigger rigidity.
Fibre reinforced materials of the invention, when necessary will be to steel bridge deck by cementing material and steel bridge deck tight bond
Carry out polishing grinding.
Further, the length of the laths of metal is equal to the width of fatigue cracking steel bridge deck, and width is according to tool
Body situation determines that laths of metal is positioned on steel bridge deck by a variety of modes (such as welding, cementing, bolt) that are reliably connected.
Further improvement project is that suitable weld stud on the steel bridge deck of fatigue cracking, the laths of metal can
It is laid between peg gap, the form of open pore steel plate can also be used.
Further, the height of the short peg is 30 ~ 50mm, and diameter is 10 ~ 25mm.
Further improvement project is, the composite reinforcement structure further include be arranged in it is multistory reinforced in concrete layer
Net, steel mesh are located at the lower section and/or top of laths of metal.Steel mesh by with adjacent bar spacing 20-70mm, staggeredly be laid with
Longitudinal reinforcement and transverse steel composition, bar diameter 8-16mm.
The invention also includes fatigue cracking steel bridge deck, be bonded in split on steel bridge deck reinforcing item (strengthen item on
Arrangement shear connector may be selected), the shear connector, steel mesh, the ultra-high performance concrete layer that are welded on raw steel floorings
And wearing course, the reinforcing item, which is bonded in by organic structure glue along direction across bridge, have been split on steel bridge deck, and the steel mesh is placed
On having split steel bridge deck, the ultra-high performance concrete layer, which is cast in, have been split on steel bridge deck, and is covered and strengthened item, shearing company
Fitting, steel mesh, the wearing course are cast on ultra-high performance concrete layer.
Reinforcing item of the invention can be steel plate strip, CFRP strip, carbon fiber cloth.According to steel plate strip, top surface can
The shear connectors such as weld stud, steel bar end, T-steel, L-type steel, PBL open pore steel plate；According to carbon fiber-reinforced plate, top surface
T-steel or T-type carbon fiber sectional material, L-type steel or L-type carbon fiber sectional material shear connector can be bonded；According to carbon fiber cloth, examine
Consider very thin thickness, shear connector is no longer set thereon.
Reinforcing item with shear connector (if having) of the invention is bonded in the steel bridge that cracked along direction across bridge by organic structure glue
Panel top surface cooperates with ultra-high performance concrete bottom surface tension, to make up the deficiency of raw steel floorings fatigue cracking.Pass through organic knot
Structure gluing knot, it can be ensured that strengthen item and fitted closely with raw steel floorings, avoid gap, improve cooperative bearing between the two.
The present invention has cracked and has been welded with shear connector on steel bridge deck.The shear connector can be T-steel, L-type steel, PBL and open
The forms such as hole steel plate, shear connector are arranged in the adjacent gap area for strengthening lath.
Steel mesh of the invention is arranged in the top of cracked steel bridge deck and reinforcing item, and is staggered and shears key position.Institute
It states steel mesh and is divided into longitudinal and transverse bridge to two layers.Steel mesh primarily serves the effect reinforced ultra-high performance concrete layer, wherein cross-bridges
To steel bar arrangement in upper layer, vertical bridge to steel bar arrangement in lower layer, binding shape is can be used in cross-point locations to reinforcing bar in longitudinal and transverse bridge
Formula.
Ultra-high performance concrete of the invention refers to non-coarse aggregate, incorporation silicon ash isoreactivity component, mixing of steel fiber, glue
Than being no more than 0.25, compression strength is not less than 100MPa, and tensile strength is not less than the cement-base composite material of 5MPa.The superelevation
Performance concrete is laid on above steel bridge deck, and item, shear connector and steel mesh are strengthened in covering.
The present invention proposes a kind of light-duty composite reinforcement structure for steel bridge deck has been split, and improves bridge floor rigidity, avoids steel bridge
Face fatigue crack continues to extend, and extends the service life of Steel Bridge Deck.Compared with prior art, the reinforcing item in the present invention can be
The forms such as steel plate strip, CFRP strip, carbon fiber cloth, according to steel plate strip or CFRP strip, shear connector can weld in advance
Or it is cementing on strengthening item, according to carbon fiber cloth, no setting is required thereon shear connector, and strengthening item only needs to pass through organic structure
Gluing knot not only can ensure that in raw steel bridge floor plate top surface and strengthen item and raw steel floorings tight bond, but also can reduce site operation hardly possible
Degree.Between adjacent reinforcing lath, the shear connectors such as T-steel, L-type steel, PBL open pore steel plate are welded on raw steel bridge floor, with small-sized bolt
Nail is compared, and the shearing strength and rigidity of this kind of shear connector greatly improve, and so as to reduce shear connector layout density, can equally be subtracted
Small site welding workload.
Therefore, the reinforcing lath in the present invention can combine closely with raw steel floorings, avoid raw steel floorings because of fatigue
Crack and cause the problem of ultra-high performance concrete bottom surface breaking resistance deficiency.Meanwhile strengthening the construction letter of item and shear connector
Just, it is firmly combined, there is great good application value and economic benefit, there is wide answer in the reinforcing of old Steel Bridge
Use prospect.
The beneficial effects of the present invention are: 1.FRP material with steel bridge deck is cementing does not interspace, there are also anti-corrosion function, metals
Lath cannot be simply considered that the reinforcing to steel bridge deck, meanwhile, also improve the tensile capacity and structure of concrete base
Stress, the arrangement of 2. pegs are specifically contemplated that former patent is largely welded on floorings, have weakening effect, this patent is according to reality
Situation arranges peg on bridge floor, more rationally.3. the statement using concrete layer can cover wide range, may include
Lightweight aggregate concrete, lightweight aggregate concrete from heavy and light, play that mould is low, toughness is high, non-deformability is good, anti-permeability performance is good, heat preservation
It is heat-insulated.And can effectively solve thereon the cracking of pave-load layer, elapse, gather around the problems such as packet and waterproof, can be appropriate to mention that, compare superelevation
The characteristics of performance concrete.
Steel mesh in concrete layer improve concrete layer direction across bridge and along bridge to tension, shear resistance.
Different shear connectors is arranged according to different force requests, more meets force request.
By using of the invention to fatigue cracking steel bridge deck reinforcement technique, the steel bridge deck that cracked is essentially eliminated
A possibility that cracking again, the steel bridge deck with crack still can be used as permanent component to be continued to take in the entire design cycle
Labour, extends its anti-fatigue life, improves the durability of bridge deck, to fatigue cracking steel bridge deck reinforcement technique in the present invention,
With to fatigue cracking steel bridge deck reinforcement effect, ultra-high performance concrete layer bottom surface pull resistance is good, laths of metal and coagulation
The advantages that soil layer bonding is reliable, fatigue resistance is good, easy construction, has great use value and good economic benefit, In
Steel bridge construction field has broad application prospects.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention (one)；
Fig. 2 is the side sectional view of Fig. 1；
Fig. 3 is structural schematic diagram of the invention (two)；
Fig. 4 is the side sectional view (one) of Fig. 3；
Fig. 5 is the side sectional view (two) of Fig. 3.
In figure: 1- fatigue cracking steel bridge deck, 2- fibre reinforced composites layer, 3- shear connector, 4- steel mesh,
5- concrete layer, 6- wearing course.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
Embodiment 1, the present invention include that fatigue cracking steel bridge deck, fiber reinforcement FRP material, laths of metal, shearing have connected
Connect key and concrete layer.
Peg can be arranged according to the actual situation on the steel bridge deck of fatigue cracking, if arrangement peg, spacing use 100
~ 300mm, the FRP material can be pasted closely using cementing material with steel bridge deck.
Laths of metal by be reliably connected with steel bridge deck secure attachment, shear connector is arranged on laths of metal, then cloth
Two or more layers steel mesh is set, bar spacing is undetermined, last casting concrete layer, refering to fig. 1 to Fig. 5.
Embodiment 2, the present invention may also comprise fatigue cracking steel bridge deck, fibre reinforced composites layer, Shear connection
Shear connector, the fiber-reinforced composite is arranged on the fibre reinforced composites layer in part, steel mesh and concrete layer
Material layer is laid with to the cracking position of fatigue cracking steel bridge deck, is closely to stick in steel bridge deck by epoxide-resin glue
On, the steel mesh is placed on fatigue cracking steel bridge deck, and the concrete layer is poured into fatigue cracking steel bridge deck
On, and covering shear connector, steel mesh are connect with fatigue cracking steel bridge deck, refering to fig. 1 to Fig. 5, remaining is the same as to take up an official post
The combination of one embodiment or 2 above embodiments.
Shear connector, the fibre reinforced composites are arranged on fatigue cracking steel bridge deck in embodiment 3, the present invention
Layer is laid with to the cracking position of fatigue cracking steel bridge deck, and the steel mesh is placed on fatigue cracking steel bridge deck, institute
It states concrete layer to be poured on fatigue cracking steel bridge deck, and covers shear connector, steel mesh and fatigue cracking steel bridge
Panel connection, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 4, concrete layer of the invention can also use lightweight aggregate concrete, in addition the aluminium strip of lighter in weight,
Four kinds of schemes, ultra-high performance concrete+steel plate strip, ultra-high performance concrete+aluminium strip, lightweight aggregate concrete+steel can be formed
Lath, lightweight aggregate+aluminium strip, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 5, fibre reinforced composites layer of the invention include fibre reinforced materials item, laths of metal, such as steel
Lath, CFRP strip, carbon fiber cloth, the fibre reinforced materials item is located at fibre reinforced composites layer bottom end, described
Laths of metal is slightly larger than fibre reinforced materials item, is placed on fibre reinforced materials item；Fibre reinforced materials (such as carbon cloth
CFRP), physical characteristic is similar to cloth, can not be connect using shear connector with Steel Bridge Deck, fibre reinforced materials utilizes organic
Glue is closely pasted with floorings, is not interspaced, and main purpose is first is that prevent steel bridge deck from further corroding, second is that inhibiting steel bridge
The crackle in face further expands, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 6, fibre reinforced composites layer of the invention according to steel plate strip, top surface can weld peg, steel bar end,
The shear connectors such as T-steel, L-type steel, PBL open pore steel plate；According to carbon fiber-reinforced plate, top surface can bond T-steel or T-type
Carbon fiber sectional material, L-type steel or L-type carbon fiber sectional material shear connector；According to carbon fiber cloth, it is contemplated that very thin thickness,
On shear connector is no longer set, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 7, fibre reinforced composites layer of the present invention with shear connector are bonded by organic structure glue along direction across bridge
In steel bridge deck top surface of having cracked, ultra-high performance concrete bottom surface tension is cooperateed with, to make up raw steel floorings fatigue cracking not
Foot；Pass through organic structure gluing knot, it can be ensured that strengthen item and fit closely with raw steel floorings, avoid gap, improve between the two
Cooperative bearing, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 8, fibre reinforced composites layer of the invention are equipped with one or more shear connector, institute
It is cementing with steel bridge deck to state fibre reinforced materials;The laths of metal is slightly wider than fibrous reinforcing material, passes through cementing and FRP
The close knot of layer is closed, by welding, bolt or cementing with steel bridge deck in conjunction with, such words not only can common stress, but also do not have
There is gap can be with anti-corrosion;3 connectors are generally connect by the way of welding with laths of metal and floorings, can not be increased with fiber
Strong material connection, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
The fibre reinforced materials item of embodiment 9, fibre reinforced composites of the present invention is opened by cementing material and fatigue
Steel bridge deck tight bond is split, the shear connector passes through welding, bolt or cementing mode and fiber-reinforced composite material
The laths of metal tight bond of material, and polishing grinding is carried out to steel bridge deck, refering to fig. 1 to Fig. 5, remaining is implemented with any of the above
The combination of example or 2 above embodiments.
Embodiment 10, the length of fibre reinforced composites layer of the present invention are equal to the width of fatigue cracking steel bridge deck,
Laths of metal can be equipped in fibre reinforced composites layer, laths of metal passes through fixed including welding, cementing, bolt connection type
On steel bridge deck, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 11, shear connector of the invention include that peg, T-steel, angle steel, L-type steel, rebar connector, PBL are opened
Hole steel plate connector, T-type carbon fiber sectional material, L-type carbon fiber sectional material shear connector, shear connector are arranged in fiber-reinforced composite material
The adjacent gap area for strengthening lath in the bed of material, refering to fig. 1 to Fig. 5, remaining is the same as any of the above embodiment or 2 above embodiments
Combination.
Embodiment 12, fibre reinforced composites layer of the invention can be made carbon cloth or CFRP strip is placed on
It is used on fatigue cracking steel bridge deck, refering to fig. 1 to Fig. 5, remaining group with any of the above embodiment or 2 above embodiments
It closes.
Embodiment 13, steel mesh of the invention are multi-story steel mesh, and the steel mesh is divided into longitudinal and transverse bridge to two layers, wherein
For direction across bridge steel bar arrangement in upper layer, vertical bridge to steel bar arrangement in lower layer, binding is can be used in cross-point locations to reinforcing bar in longitudinal and transverse bridge
Form, steel mesh are located at the lower section and/or top of fibre reinforced composites layer；Steel mesh is by with adjacent bar spacing 20-
70mm, the longitudinal reinforcement being staggeredly laid with and transverse steel composition, bar diameter 8-16mm, refering to fig. 1 to Fig. 5, remaining with
The combination of upper any embodiment or 2 above embodiments.
Embodiment 14, concrete layer of the invention are equipped with wearing course, and wearing course includes bituminous concrete class and resinae,
Refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 15, the present invention reinforce original floorings, and using injecting glue mode filling cracks, steel is protected in mopping
Floorings, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 16, the present invention are combined closely with steel plate has been split with FRP plate item (such as carbon cloth), solve steel plate strip with
The voiding problem to crack between floorings, while solving its etching problem that may be present, refering to fig. 1 to Fig. 5, remaining with
The combination of upper any embodiment or 2 above embodiments.
Embodiment 17, the present invention can suitably reduce the quantity of steel plate strip, and the mixing that aluminium strip, or both also can be used makes
With width of sheet should be slightly larger than FRP plate width, and welding can be used with steel bridge deck in laths of metal (steel and/or aluminium strip)
(spot welding, complete to weld), is glued, and bolt form formation is reliably connected.Other concrete material (such as lightweight aggregate coagulations can also be used
Soil), by arranging multiplayer reinforcing bar, so that its tensile strength is met engine request, while reducing dead load, improves bearing capacity,
Working procedure is simple, low in cost, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 18, steel bridge deck and laths of metal (steel and or aluminium strip) of the present invention do not use shear connector or using few
Peg is measured, or using the shear connector form (fashioned iron, reinforcing bar, PBL connector) etc. of a small amount of bigger rigidity, refering to fig. 1 to Fig. 5,
Remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 19, fibre reinforced materials of the invention are wanted when necessary by cementing material and steel bridge deck tight bond
Polishing grinding is carried out to steel bridge deck.
Further, the length of the laths of metal is equal to the width of fatigue cracking steel bridge deck, and width is according to tool
Body situation determines that laths of metal is positioned on steel bridge deck by a variety of modes (such as welding, cementing, bolt) that are reliably connected.
Further improvement project is that suitable weld stud on the steel bridge deck of fatigue cracking, the laths of metal can
It is laid between peg gap, the form of open pore steel plate can also be used.
Further, the height of the short peg is 30 ~ 50mm, and diameter is 10 ~ 25mm.
Further improvement project is, the composite reinforcement structure further include be arranged in it is multistory reinforced in concrete layer
Net, steel mesh are located at the lower section and/or top of laths of metal.Steel mesh by with adjacent bar spacing 20-70mm, staggeredly be laid with
Longitudinal reinforcement and transverse steel composition, bar diameter 8-16mm, refering to fig. 1 to Fig. 5, remaining is the same as any of the above embodiment or 2
The combination of a above embodiments.
Embodiment 20 the invention also includes fatigue cracking steel bridge deck, is bonded in the reinforcing item split on steel bridge deck
(strengthen and arrangement shear connector may be selected on item), shear connector, steel mesh, the very-high performance being welded on raw steel floorings
Concrete layer and wearing course, the reinforcing item, which is bonded in by organic structure glue along direction across bridge, have been split on steel bridge deck, the steel
Muscle net, which is placed in, have been split on steel bridge deck, and the ultra-high performance concrete layer, which is cast in, have been split on steel bridge deck, and is covered and strengthened
Item, shear connector, steel mesh, the wearing course are cast on ultra-high performance concrete layer.
Reinforcing item of the invention can be steel plate strip, CFRP strip, carbon fiber cloth.According to steel plate strip, top surface can
The shear connectors such as weld stud, steel bar end, T-steel, L-type steel, PBL open pore steel plate；According to carbon fiber-reinforced plate, top surface
T-steel or T-type carbon fiber sectional material, L-type steel or L-type carbon fiber sectional material shear connector can be bonded；According to carbon fiber cloth, examine
Consider very thin thickness, shear connector is no longer set thereon.
Reinforcing item with shear connector (if having) of the invention is bonded in the steel bridge that cracked along direction across bridge by organic structure glue
Panel top surface cooperates with ultra-high performance concrete bottom surface tension, to make up the deficiency of raw steel floorings fatigue cracking.Pass through organic knot
Structure gluing knot, it can be ensured that strengthen item and fitted closely with raw steel floorings, avoid gap, improve cooperative bearing between the two.
The present invention has cracked and has been welded with shear connector on steel bridge deck.The shear connector can be T-steel, L-type steel, PBL and open
The forms such as hole steel plate, shear connector are arranged in the adjacent gap area for strengthening lath.
Steel mesh of the invention is arranged in the top of cracked steel bridge deck and reinforcing item, and is staggered and shears key position.Institute
It states steel mesh and is divided into longitudinal and transverse bridge to two layers.Steel mesh primarily serves the effect reinforced ultra-high performance concrete layer, wherein cross-bridges
To steel bar arrangement in upper layer, vertical bridge to steel bar arrangement in lower layer, binding shape is can be used in cross-point locations to reinforcing bar in longitudinal and transverse bridge
Formula.
Ultra-high performance concrete of the invention refers to non-coarse aggregate, incorporation silicon ash isoreactivity component, mixing of steel fiber, glue
Than being no more than 0.25, compression strength is not less than 100MPa, and tensile strength is not less than the cement-base composite material of 5MPa.The superelevation
Performance concrete is laid on above steel bridge deck, and item, shear connector and steel mesh are strengthened in covering.
The present invention proposes a kind of light-duty composite reinforcement structure for steel bridge deck has been split, and improves bridge floor rigidity, avoids steel bridge
Face fatigue crack continues to extend, and extends the service life of Steel Bridge Deck.Compared with prior art, the reinforcing item in the present invention can be
The forms such as steel plate strip, CFRP strip, carbon fiber cloth, according to steel plate strip or CFRP strip, shear connector can weld in advance
Or it is cementing on strengthening item, according to carbon fiber cloth, no setting is required thereon shear connector, and strengthening item only needs to pass through organic structure
Gluing knot not only can ensure that in raw steel bridge floor plate top surface and strengthen item and raw steel floorings tight bond, but also can reduce site operation hardly possible
Degree.Between adjacent reinforcing lath, the shear connectors such as T-steel, L-type steel, PBL open pore steel plate are welded on raw steel bridge floor, with small-sized bolt
Nail is compared, and the shearing strength and rigidity of this kind of shear connector greatly improve, and so as to reduce shear connector layout density, can equally be subtracted
Small site welding workload, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Claims (10)
1. a kind of fiber-reinforced layer of adding solves to have split the composite reinforcement structure of Steel Bridge, it is characterized in that: it includes tired
Crack steel bridge deck, fibre reinforced composites layer, shear connector, steel mesh and concrete layer, and the fiber reinforcement is multiple
Shear connector is set on condensation material layer, and the fibre reinforced composites layer is laid with to the cracking of fatigue cracking steel bridge deck
Position, the steel mesh are placed on fatigue cracking steel bridge deck, and the concrete layer is poured into fatigue cracking Steel Bridge Deck
On plate, and covering shear connector, steel mesh are connect with fatigue cracking steel bridge deck.
2. fiber-reinforced layer according to claim 1 of adding solves to have split the composite reinforcement structure of Steel Bridge, feature
Be: the cracking position of fatigue cracking steel bridge deck is equipped with 2 or more fibre reinforced composites layers, adjacent fiber reinforcement
Shear connector is provided on steel bridge deck between composite layer.
3. fiber-reinforced layer according to claim 1 or 2 of adding solves to have split the composite reinforcement structure of Steel Bridge, special
Sign is: the fibre reinforced composites layer includes fibre reinforced materials item, laths of metal, and the fibre reinforced materials item is located at
Fibre reinforced composites layer bottom end, the laths of metal are slightly larger than fibre reinforced materials item, are placed in fibre reinforced materials item
On.
4. fiber-reinforced layer according to claim 3 of adding solves to have split the composite reinforcement structure of Steel Bridge, feature
Be: the fibre reinforced materials item passes through cementing material and fatigue cracking steel bridge deck tight bond, the shear connector
By welding, bolt or cementing mode and laths of metal tight bond, and polishing grinding is carried out to steel bridge deck.
5. fiber-reinforced layer according to claim 1 or 2 of adding solves to have split the composite reinforcement structure of Steel Bridge, special
Sign is: the fibre reinforced composites layer is equipped with more than one shear connector.
6. fiber-reinforced layer according to claim 1 or 2 of adding solves to have split the composite reinforcement structure of Steel Bridge, special
Sign is: the length of the fibre reinforced composites layer is equal to the width of fatigue cracking steel bridge deck.
7. fiber-reinforced layer according to claim 1 or 2 of adding solves to have split the composite reinforcement structure of Steel Bridge, special
Sign is: the shear connector includes peg, T-steel, angle steel, rebar connector, PBL open pore steel plate connector, T-type carbon fiber
Profile, L-type carbon fiber sectional material shear connector.
8. fiber-reinforced layer according to claim 1 or 2 of adding solves to have split the composite reinforcement structure of Steel Bridge, special
Sign is: the steel mesh is multi-story steel mesh, and the steel mesh is divided into longitudinal and transverse bridge to two layers, and wherein direction across bridge steel bar arrangement exists
Upper layer, vertical bridge are to steel bar arrangement in lower layer, and binding form can be used in cross-point locations to reinforcing bar in longitudinal and transverse bridge, and steel mesh is located at
The lower section and/or top of fibre reinforced composites layer；Steel mesh is vertical by what is with adjacent bar spacing 20-70mm, be staggeredly laid with
It is formed to reinforcing bar and transverse steel, bar diameter 8-16mm.
9. fiber-reinforced layer according to claim 8 of adding solves to have split the composite reinforcement structure of Steel Bridge, feature
Be: the direction across bridge reinforcing bar of the steel mesh, vertical bridge can be spaced uneven arrangement to reinforcing bar, and arrangement closer from crack is closeer.
10. fiber-reinforced layer according to claim 1 or 2 of adding solves to have split the composite reinforcement structure of Steel Bridge,
Be characterized in: the concrete layer is equipped with wearing course, and wearing course includes bituminous concrete class and resinae.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154496.2A CN109338903A (en) | 2018-09-30 | 2018-09-30 | A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge |
| CN2018111544962 | 2018-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110499716A true CN110499716A (en) | 2019-11-26 |
Family
ID=65307886
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811154496.2A Pending CN109338903A (en) | 2018-09-30 | 2018-09-30 | A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge |
| CN201910751566.0A Pending CN110499716A (en) | 2018-09-30 | 2019-08-15 | A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811154496.2A Pending CN109338903A (en) | 2018-09-30 | 2018-09-30 | A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN109338903A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080087A (en) * | 2019-05-16 | 2019-08-02 | 北京智华通科技有限公司 | A kind of light-duty pave-load layer structure of steel bridge and method for paving |
-
2018
- 2018-09-30 CN CN201811154496.2A patent/CN109338903A/en active Pending
-
2019
- 2019-08-15 CN CN201910751566.0A patent/CN110499716A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN109338903A (en) | 2019-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106638302B (en) | Steel concrete combined bridge deck and construction method | |
| CN101769042B (en) | matched prefabricated concrete hollow slab beam structure | |
| CN107217788A (en) | Full FRP muscle enhancing ECC Combined concrete beams and preparation method thereof | |
| CN110499717A (en) | One kind is to fatigue cracking steel bridge deck ruggedized construction | |
| CN104631319A (en) | Connector-free steel and ultrahigh-performance concrete combined bridge deck structure and construction method thereof | |
| CN103291082A (en) | Wood beam reinforcing body external pre-stress construction method | |
| CN108532810A (en) | A kind of recycled concrete superposed composite floor of steel plate- | |
| CN110499716A (en) | A kind of composite reinforcement structure added fiber-reinforced layer solution and split Steel Bridge | |
| CN204185768U (en) | Based on the steel-ultra-high performance concrete combined bridge deck plated construction of connector of steel tube | |
| CN208219952U (en) | A kind of recycled concrete superposed composite floor of steel plate- | |
| CN106638306B (en) | Steel-ultra-high performance concrete combined bridge deck structure and its construction method with bar dowel shearing resistance construction | |
| CN204139061U (en) | Based on the steel-ultra-high performance concrete combined bridge deck plated construction of steel channel connector | |
| CN109338906A (en) | A kind of ruggedized construction added fiber-reinforced layer solution and split Steel Bridge | |
| CN209538017U (en) | Paving structure at highway bridge deck expansion joint | |
| CN206646406U (en) | Steel and ultra-high performance concrete combined bridge deck structure with bar dowel shearing resistance construction | |
| CN109338902A (en) | A kind of ruggedized construction for solving to have split Steel Bridge using lightweight aggregate concrete | |
| CN110106785A (en) | A kind of steel-PVA tenacity of fibre concrete combined bridge deck structure and construction method | |
| CN108412124A (en) | Assembled ultra-high performance concrete-part shaped steel combination beam and its construction method | |
| CN101532277A (en) | Beam strengthening method | |
| CN209323343U (en) | A kind of light section-ultra-high performance concrete stiffness bracket floor | |
| CN207314561U (en) | Ultra-high performance concrete plate seam connection structure | |
| CN208293900U (en) | Assembled ultra-high performance concrete-part shaped steel combination beam | |
| CN111519527A (en) | Flexible joint connecting structure for steel structure bridge panel and construction method thereof | |
| CN209307853U (en) | A kind of linkage interface construction of the new and old wet seam of fiber concrete floorings | |
| CN211571438U (en) | Combined reinforcing structure for solving cracked steel bridge deck by additionally arranging fiber reinforcing layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |