CN110499717A - One kind is to fatigue cracking steel bridge deck ruggedized construction - Google Patents
One kind is to fatigue cracking steel bridge deck ruggedized construction Download PDFInfo
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- CN110499717A CN110499717A CN201910751567.5A CN201910751567A CN110499717A CN 110499717 A CN110499717 A CN 110499717A CN 201910751567 A CN201910751567 A CN 201910751567A CN 110499717 A CN110499717 A CN 110499717A
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- steel bridge
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 259
- 239000010959 steel Substances 0.000 title claims abstract description 259
- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000005336 cracking Methods 0.000 title claims abstract description 38
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 238000005728 strengthening Methods 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 32
- 230000001112 coagulating effect Effects 0.000 claims abstract description 7
- 239000004567 concrete Substances 0.000 claims description 23
- 230000002787 reinforcement Effects 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 11
- 238000004026 adhesive bonding Methods 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 85
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 19
- 238000003466 welding Methods 0.000 description 12
- 230000008901 benefit Effects 0.000 description 10
- 238000009408 flooring Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 230000002929 anti-fatigue Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
One kind is to fatigue cracking steel bridge deck ruggedized construction, its key points of the technical solution are that: it includes having split steel bridge deck, carbon fiber-reinforced lath, metal strengthening lath, shear connector, steel mesh, ultra-high performance concrete layer and wearing course, carbon fiber-reinforced lath is provided on having split steel facing, shear connector is welded on the metal strengthening lath, the metal strengthening lath with shear connector is arranged in carbon fiber-reinforced thereabove, the steel mesh, which is placed in, have been split on steel bridge deck, the ultra-high performance concrete layer, which is poured into, have been split on steel bridge deck, and the carbon fiber-reinforced lath of covering, metal strengthening lath, shear connector, steel mesh is connect with steel bridge deck has been split, the wearing course is covered on very-high performance coagulating layer top surface.
Description
Technical field
The present invention relates to a kind of bridge structures reinforced for Orthotropic Steel Bridge Deck, especially a kind of to open fatigue
Split steel bridge deck ruggedized construction.
Background technique
Orthotropic Steel Bridge Deck since the advent of the world, with it from heavy and light, ultimate bearing capacity is big, quick construction, beautiful design
The advantages that, by the favor of Bridge Design person, it is particularly suitable for Large Span Bridges.But Steel Bridge Deck local stiffness is too low, long-term
Easily occurs fatigue cracking disease problem in operation.Domestic built Guangdong Humen Bridge etc., bridge floor use orthotropic steel bridge deck
There is fatigue crack in operation in plate.For above-mentioned disease, various Scheme of Strengthening are proposed, wherein " one kind is without repairing for patent
The light-duty composite reinforcement structure (patent No.: ZL201721470446.6) of fatigue cracking steel bridge deck " it proposes with welding
The steel plate of short peg, which is welded to, has split floorings, while floorings weld short peg, finally pour ultra-high performance concrete, is formed
Composite reinforcement structure technology has split steel bridge deck with this to have the function that reinforce.
But there are still following problems for the patented technology: 1. steel plate strips, which are welded to, has split floorings, cannot with split bridge floor
Plate is combined closely, and there are gaps between the two, and there are corrosion risks, and steel plate strip is difficult to and has split the common stress of floorings；2. steel
Lath density is larger, will increase bridge self weight using excessive steel plate strip, reduces the safety stock of bridge；3. in the steel that cracked
A large amount of pegs are welded on floorings, can introduce welding residual stress, be there is the risk to form new crackle, are further weakened steel bridge
The bearing capacity of panel.
Summary of the invention
It is different from ultra-high performance concrete is directly applied to intact Orthotropic Steel Bridge Deck (or repair to intact), it is right
In the steel bridge deck of fatigue cracking, the presence of fatigue crack will be greatly reduced steel facing and make to the reinforcing of ultra-high performance concrete
With.If not taking effective enhancements, the tensile strength pole of ultra-high performance concrete layer bottom surface having split steel bridge deck top surface
It is low, it will lead to cracking.Therefore, ultra-high performance concrete is applied to split Orthotropic Steel Bridge Deck, needs sufficiently to consider
Reasonable enhancements are taken to the adverse effect of ultra-high performance concrete layer stress in steel plate crack, and key be it is how right
Ultra-high performance concrete layer bottom surface is strengthened, and prevents concrete layer from cracking.
The object of the present invention is to provide one kind to fatigue cracking steel bridge deck ruggedized construction；In existing light-duty composite reinforcement
On the basis of structure, by adding carbon fiber-reinforced lath and/or laths of metal, the arrangement for improving steel mesh, strengthen
Anti-crack ability through ultra-high performance concrete thin layer bottom surface above cracking steel bridge deck；Using a variety of shear connector forms, add
Strong light assembling structure and the former cracking direct shear connections of steel bridge deck；Using new construction technology, simplify work progress,
Mitigate the damage to the steel bridge deck to have cracked simultaneously, which completely eliminates Orthotropic Steel Bridge Deck fatigue cracking disease
Evil.
The technical solution adopted by the present invention to solve the technical problems is: including having split steel bridge deck, carbon fiber-reinforced plate
Item, metal strengthening lath, shear connector, steel mesh, ultra-high performance concrete layer and wearing course, set on having split steel facing
It is equipped with carbon fiber-reinforced lath, shear connector, the metal with shear connector are welded on the metal strengthening lath
Strengthen lath to be arranged in carbon fiber-reinforced thereabove, the steel mesh, which is placed in, have been split on steel bridge deck, the very-high performance
Concrete layer, which is poured into, have been split on steel bridge deck, and covers carbon fiber-reinforced lath, metal strengthening lath, shear connector, steel
Muscle net is connect with steel bridge deck has been split, and the wearing course is covered on very-high performance coagulating layer top surface.
The present invention also provides another kinds to be to fatigue cracking steel bridge deck ruggedized construction, technical solution: including having split
Steel bridge deck, carbon fiber-reinforced lath, metal strengthening lath, shear connector, steel mesh, ultra-high performance concrete layer and mill
Layer is consumed, carbon fiber-reinforced lath is provided on having split steel facing, is welded with shear connector, band on the metal strengthening lath
The metal strengthening lath of shear connector directly welds or cementing on having split steel bridge deck, and flat with carbon fiber-reinforced lath
Row is alternately arranged, and the steel mesh, which is placed in, have been split on steel bridge deck, and the ultra-high performance concrete layer, which is poured into, has split steel bridge
On panel, and covers carbon fiber-reinforced lath, metal strengthening lath, shear connector, steel mesh and is connect with steel bridge deck has been split,
The wearing course is covered on very-high performance coagulating layer top surface.
Shear connector of the invention includes peg, T-steel, L-type steel, channel steel, PBL open pore steel plate, bent-up bar connection
Part.
CFRP strip of the invention is splitting steel bridge deck top surface by organic structure gluing knot, arranges along direction across bridge.
Metal strengthening lath of the present invention with shear connector can directly weld or it is cementing on having split steel bridge deck and with
Carbon fiber-reinforced lath is parallel, is alternately arranged.
Steel mesh of the present invention is made of criss-cross longitudinal reinforcement and transverse steel, the longitudinal reinforcement and transverse direction
Reinforcing bar is uniformly and equidistantly placed between the shear connector split on steel bridge deck.
Shear connector of the invention with split steel bridge deck connection type include using organic binder carry out it is be bonded,
Heat fusion welds.
CFRP strip of the invention is splitting steel bridge deck top surface by organic structure gluing knot, arranges along direction across bridge.
Steel mesh of the invention is to include longitudinal and transverse bridge to two layers, and wherein direction across bridge steel bar arrangement is in upper layer, vertical bridge to reinforcing bar
It is arranged in lower layer, finer wire binding can be used to the crossover location of reinforcing bar in longitudinal and transverse bridge, and steel mesh is located at carbon fiber-reinforced plate and gold
Belong to the top for strengthening plate, it is preferably 25-100mm that bar diameter, which is preferably 6-16mm, steel mesh spacing,.
Steel mesh of the present invention may be three layers.The transverse steel of compound steel muscle web frame is located at reinforcing bar web tier under
Layer, longitudinal reinforcement are located at steel mesh middle layer, and the transverse steel of the upper and lower can increase stretching resistance, institute in same vertical line
The transverse steel of the upper and lower is stated not in same vertical line, convenient for the binding of steel mesh crossover location.
The present invention is located at the tensile capacity of the transverse steel enhancing light assembling structure concrete layer top surface on upper layer, under being located at
The tensile capacity of the transverse steel enhancing light assembling structure concrete layer bottom surface of layer；Upper layer transverse steel can satisfy concrete
The excessive construction demand of top surface hogging moment area tensile stress, lower layer's transverse steel can satisfy that there are the raw steel floorings in crack to mixed
The requirement that solidifying soil bottom surface plays a protective role；If raw steel bridge floor plank split is not serious, upper layer transverse steel can be only arranged；If full-bridge
Hogging moment area tensile stress is smaller, can only arrange lower layer's transverse steel.
The interlayer of steel mesh of the present invention can carry out binding and fixing using finer wire.
Ultra-high performance concrete layer of the invention is poured by ultra-high performance concrete, the ultra-high performance concrete
Refer in component containing steel fibre, non-coarse aggregate, water-cement ratio no more than 0.25, compression strength >=100MPa, axial tensile strength >=5MPa
Cement-base composite material.
Ultra-high performance concrete layer of the invention is equipped with wearing course, and wearing course includes pitch class and two kinds of resinae.
Present invention be characterized in that including having split steel bridge deck, shear connector, steel mesh and ultra-high performance concrete
Layer, the shear connector, which is fixed on, have been split on steel bridge deck, and the steel mesh is criss-cross arranged in having split on steel bridge deck,
The ultra-high performance concrete layer, which is cast in, have been split on steel bridge deck, and covers shear connector, steel mesh and steel bridge deck, structure
The light-duty combined bridge deck ruggedized construction that steel bridge deck continues problem of Cracking has been split at solution, has eliminated the steel bridge deck crack cracked
Continue the risk of development.
Crack on steel bridge deck of the present invention can consider whether to repair according to the actual situation, it is only necessary to adjust the cloth of steel mesh
The form for setting mode and shear connector, can be compound steel muscle net perhaps double layer bar can be peg or T-steel or
Person's angle steel or L-type steel or PBL(open pore steel plate connector)；Shear connector is fixed on to the Steel Bridge Deck to have cracked in advance
Plate is then laid with steel mesh and is bound, cast-in-place ultra-high performance concrete layer, do not needed using complicated construction technology and height
The construction equipment of investment, equipment investment is small, easy to operate, is easy to construct, the quality and construction process requirement to construction personnel compared with
It is low.
By change reinforcing bar arrangement, the order of placement of the number of plies, transverse steel and longitudinal reinforcement including steel mesh,
Thickness of protection tier reduce ultra-high performance concrete layer bottom surface because steel bridge deck is there are crack will not by concrete bottom
Horizontal tensile stress avoids concrete layer from cracking, and further improves the force-bearing situation of combined bridge deck ruggedized construction；After improvement
Light-duty composite reinforcement structure, significantly reduce the Fatigue Stress Amplitude of steel bridge deck, so eliminate Steel Bridge Deck continue cracking
Risk, while already present crack will not be further continued for expanding development.
The light-duty composite reinforcement structure that steel bridge deck continues problem of Cracking has been split by using a kind of solution, has been essentially eliminated
A possibility that steel bridge deck that cracked cracks again, the steel bridge deck with crack still can be used as permanent component and entirely designing
Continue to be on active service in period, extend its anti-fatigue life, improves the durability of bridge deck.
The present invention use simultaneously two kinds of materials of CFRP strip and laths of metal to the steel bridge deck that cracked carry out reinforce and
Strengthen.Compared with prior art, the invention has the following advantages that 1) to have that density is low, tensile strength is high etc. excellent for CFRP strip
Point, compared with pure metal lath reinforcement technique, the technology of the present invention helps to reduce bridge floor self weight；2) CFRP strip and steel plate are viscous
Tie performance it is good, can with split steel bridge deck tight bond, avoid occurring gap between the two, improve Scheme of Strengthening compound action effect
Fruit；3) either laths of metal is stacked or parallel intermittent arrangement with the arrangement relation of CFRP strip, can be to
It splits steel bridge deck and plays invigoration effect, to make up the fault of construction for having split steel bridge deck, cooperate with ultra-high performance concrete layer bottom
Face tension effectively prevent ultra-high performance concrete layer bottom surface to crack.
Shear connector of the invention is various informative, can use different type according to design requirement.Compared with conventional peg, T-type
The shear connectors such as steel, L-type, channel steel, PBL perforated panel, bent-up bar have many advantages, such as that shearing strength is high, rigidity is big, high-efficient, can be excellent
First use.Using when can reduce shear connector layout density, thus can reduce site welding workload, and can effectively ensure steel-
The interlayer stress of ultra-high performance concrete.Therefore, it is compared with the prior art, present invention reduces site welding workloads, favorably
In the rapid construction of old bridge reinforcement.
Crack on steel bridge deck of the present invention can consider whether to repair according to the actual situation.The present invention uses carbon fiber simultaneously
It ties up lath and the laths of metal with welding shear key is reinforced to steel facing has been split, two kinds of laths can overcome Steel Bridge Deck tired
Labor cracking bring fault of construction, greatly improves the tensile strength of ultra-high performance concrete layer bottom surface, to prevent concrete layer
Bottom surface cracking.Meanwhile ultra-high performance concrete layer top surface arranges longitudinal and transverse bridge to steel mesh, improves the anti-of concrete layer top surface
Tensile strength, to prevent concrete layer top surface from cracking.
Be welded with shear connector on laths of metal of the invention, and laths of metal by welding or it is cementing with split steel bridge
Panel connection, it can be ensured that ultra-high performance concrete layer and steel plate efficient combination, to greatly improve the office for having split steel bridge deck
Portion's bending stiffness significantly reduces vehicle-mounted caused Steel Bridge Deck stress, eliminates the risk of Steel Bridge Deck fatigue cracking from the root, thus
Extend the service life of steel bridge deck.
The beneficial effects of the present invention are: a possibility that cracking again present invention substantially eliminate the steel bridge deck that cracked, band is split
The steel bridge deck of seam still can be used as permanent component to be continued to be on active service in the entire design cycle, extends its anti-fatigue life,
Improve the durability of bridge deck.The present invention is reinforced using two kinds of CFRP strip, laths of metal materials to Steel Bridge Deck has been split,
The advantages of taking full advantage of two kinds of construction materials, Steel Bridge Deck crack can be reinforced but also with ultra-high performance concrete shape
At compound action, ultra-high performance concrete layer bottom surface is effectively prevent to crack.Therefore, the present invention is reliable with interlayer connection, it is tired to resist
The advantages that labor is good, easy construction has great use value and good economic benefit, has in steel bridge construction field wide
Wealthy application prospect.
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- has split the carbon fiber-reinforced lath of steel bridge deck, 2-, 3- metal strengthening lath, 4- shear connector, 5- steel
Muscle net, 6- ultra-high performance concrete layer, 7- 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 having split steel bridge deck, carbon fiber-reinforced lath, metal strengthening lath, Shear connection
Part, steel mesh, ultra-high performance concrete layer and wearing course, the carbon fiber-reinforced lath is by organic structure gluing knot
It splits on steel facing, be welded with shear connector, the metal strengthening lath with shear connector on the metal strengthening lath
By organic structure gluing knot in carbon fiber-reinforced thereabove, the steel mesh, which is placed in, have been split on steel bridge deck, the steel
Muscle net is made of criss-cross longitudinal reinforcement and transverse steel, and the ultra-high performance concrete layer, which is poured into, has split steel bridge deck
On, and cover carbon fiber-reinforced lath, metal strengthening lath, shear connector, steel mesh and connect with steel bridge deck has been split, it is described
Wearing course is covered on very-high performance coagulating layer top surface, refering to fig. 1 to Fig. 5.
Embodiment 2, the present invention include having split steel bridge deck, carbon fiber-reinforced lath, metal strengthening lath, Shear connection
Part, steel mesh, ultra-high performance concrete layer and wearing course are provided with carbon fiber-reinforced lath on having split steel facing, described
It is welded with shear connector on metal strengthening lath, the metal strengthening lath with shear connector is directly welded or cementing split
On steel bridge deck, and it is parallel with carbon fiber-reinforced lath, be alternately arranged, the steel mesh, which is placed in, have been split on steel bridge deck, institute
It states ultra-high performance concrete layer and is poured into and split on steel bridge deck, and cover carbon fiber-reinforced lath, metal strengthening lath, shearing
Connector, steel mesh are connect with steel bridge deck has been split, and the wearing course is covered on very-high performance coagulating layer top surface.Refering to fig. 1 extremely
Fig. 5.
Embodiment 3, shear connector of the invention include peg, T-steel, L-type steel, channel steel, the connection of PBL open pore steel plate
Part, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 4, rebar connector of the invention include bent-up bar connector, and refering to fig. 1 to Fig. 5, remaining is with more than
The combination of any embodiment or 2 above embodiments.
Embodiment 5, CFRP strip of the invention is splitting steel bridge deck top surface by organic structure gluing knot, along cross-bridges
To arrangement, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 6, the reinforcing bar in steel mesh of the present invention are uniformly and equidistantly placed in the Shear connection split on steel bridge deck
Between part, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 7, shear connector of the invention include using organic binder with the connection type for having split steel bridge deck
It is bonded, heats fusion welds, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 8, CFRP strip of the invention is splitting steel bridge deck top surface by organic structure gluing knot, along cross-bridges
To arrangement, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 9, steel mesh of the invention are to include longitudinal and transverse bridge to two layers, and wherein direction across bridge steel bar arrangement is on upper layer, vertical
Bridge is to steel bar arrangement in lower layer, and finer wire binding can be used to the crossover location of reinforcing bar in longitudinal and transverse bridge, and it is strong that steel mesh is located at carbon fiber
Change the top of plate and metal strengthening plate, it is preferably 25-100mm that bar diameter, which is preferably 6-16mm, steel mesh spacing, refering to fig. 1
To Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
The transverse steel of embodiment 10, compound steel muscle web frame of the present invention is located at steel mesh the upper and lower, longitudinal reinforcement
Positioned at steel mesh middle layer, the transverse steel of the upper and lower can increase stretching resistance, the upper and lower in same vertical line
Transverse steel not in same vertical line, increase moment of flexure area tensile stress, 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 11, the present invention are located at the tension energy of the transverse steel enhancing light assembling structure concrete layer top surface on upper layer
Power, the tensile capacity positioned at the transverse steel enhancing light assembling structure concrete layer bottom surface of lower layer；Upper layer transverse steel can be with
Meet the excessive construction demand of top of concrete hogging moment area tensile stress, lower layer's transverse steel can satisfy the raw steel there are crack
The requirement that floorings play a protective role to concrete bottom；If raw steel bridge floor plank split is not serious, it can only arrange that upper layer is lateral
Reinforcing bar；If full-bridge hogging moment area tensile stress is smaller, lower layer's transverse steel can be only arranged, 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.
Embodiment 12, the interlayer of steel mesh of the present invention can carry out binding and fixing using finer wire, refering to fig. 1 to Fig. 5,
The combination of remaining same any of the above embodiment or 2 above embodiments.
Embodiment 13, ultra-high performance concrete layer of the invention is poured by ultra-high performance concrete, the superelevation
Performance concrete refers in component that containing steel fibre, non-coarse aggregate, water-cement ratio, compression strength >=100MPa, axis are drawn no more than 0.25
Intensity >=5MPa cement-base composite material, refering to fig. 1 to Fig. 5, remaining is the same as any of the above embodiment or 2 above embodiments
Combination.
Embodiment 14, ultra-high performance concrete layer of the invention are equipped with wearing layer, and wearing layer includes pitch class and resin
Two kinds of class, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 15, present invention be characterized in that, including split steel bridge deck, shear connector, steel mesh and superelevation
Performance concrete layer, the shear connector, which is fixed on, have been split on steel bridge deck, and the steel mesh is criss-cross arranged in having split
On steel bridge deck, the ultra-high performance concrete layer, which is cast in, have been split on steel bridge deck, and cover shear connector, steel mesh and
Steel bridge deck constitutes and solves to have split the light-duty combined bridge deck ruggedized construction that steel bridge deck continues problem of Cracking, what elimination had been cracked
Continue the risk of development in steel bridge deck crack.
Crack on steel bridge deck of the present invention can consider whether to repair according to the actual situation, it is only necessary to adjust the cloth of steel mesh
The form for setting mode and shear connector, can be compound steel muscle net perhaps double layer bar can be peg or T-steel or
Person's angle steel or L-type steel or PBL open pore steel plate or bent-up bar connector；Shear connector is fixed in advance and has been cracked
Steel bridge deck, be then laid with and steel mesh and bound, cast-in-place ultra-high performance concrete layer, do not needed using complicated construction
The construction equipment of technique and high investment, equipment investment is small, easy to operate, is easy to construct, quality and construction work to construction personnel
Skill requires lower.
By change reinforcing bar arrangement, the order of placement of the number of plies, transverse steel and longitudinal reinforcement including steel mesh,
Thickness of protection tier reduce ultra-high performance concrete layer bottom surface because steel bridge deck is there are crack will not by concrete bottom
Horizontal tensile stress avoids concrete layer from cracking, and further improves the force-bearing situation of combined bridge deck ruggedized construction；After improvement
Light-duty composite reinforcement structure, significantly reduce the Fatigue Stress Amplitude of steel bridge deck, so eliminate Steel Bridge Deck continue cracking
Risk, while already present crack will not be further continued for expanding development.
The light-duty composite reinforcement structure that steel bridge deck continues problem of Cracking has been split by using a kind of solution, has been essentially eliminated
A possibility that steel bridge deck that cracked cracks again, the steel bridge deck with crack still can be used as permanent component and entirely designing
Continue to be on active service in period, extend its anti-fatigue life, improve the durability of 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.
Embodiment 16, the present invention use simultaneously two kinds of materials of CFRP strip and laths of metal to cracked steel bridge deck into
Row is reinforced and is strengthened.Compared with prior art, the invention has the following advantages that 1) CFRP strip is low with density, tension is strong
The advantages that high is spent, compared with pure metal lath reinforcement technique, the technology of the present invention helps to reduce bridge floor self weight；2) CFRP strip
It is good with steel plate adhesive property, can with split steel bridge deck tight bond, avoid occurring gap between the two, improve the group of Scheme of Strengthening
Close function and effect；3) either laths of metal is stacked or parallel intermittent arrangement with the arrangement relation of CFRP strip,
Invigoration effect can be played to steel bridge deck has been split, to make up the fault of construction for having split steel bridge deck, collaboration very-high performance is mixed
Solidifying soil layer bottom surface tension, effectively prevent ultra-high performance concrete layer bottom surface to crack, and refering to fig. 1 to Fig. 5, remaining is the same as any of the above reality
Apply the combination of example or 2 above embodiments.
Embodiment 17, shear connector of the invention is various informative, can use different type according to design requirement.T-steel, L-type,
The shear connectors such as channel steel, PBL perforated panel, bent-up bar have many advantages, such as that shearing strength is high, rigidity is big, high-efficient, and when use can drop
Low shear connector layout density, thus can reduce site welding workload, and can effectively ensure steel-ultra-high performance concrete layer
Between stress.Therefore, it is compared with the prior art, present invention reduces site welding workloads, are conducive to the rapid of old bridge reinforcement
Construction.
Crack on steel bridge deck of the present invention can consider whether to repair according to the actual situation.The present invention uses carbon fiber simultaneously
It ties up lath and the laths of metal with welding shear key is reinforced to steel facing has been split, two kinds of laths can overcome Steel Bridge Deck tired
Labor cracking bring fault of construction, greatly improves the tensile strength of ultra-high performance concrete layer bottom surface, to prevent concrete layer
Bottom surface cracking.Meanwhile ultra-high performance concrete layer top surface arranges longitudinal and transverse bridge to steel mesh, improves the anti-of concrete layer top surface
Tensile strength, to prevent concrete layer top surface from cracking.
Be welded with shear connector on laths of metal of the invention, and laths of metal by welding or it is cementing with split steel bridge
Panel connection, it can be ensured that ultra-high performance concrete layer and steel plate efficient combination, to greatly improve the office for having split steel bridge deck
Portion's bending stiffness significantly reduces vehicle-mounted caused Steel Bridge Deck stress, eliminates the risk of Steel Bridge Deck fatigue cracking from the root, thus
Extend the service life of steel bridge deck, refering to fig. 1 to Fig. 5, remaining combination with any of the above embodiment or 2 above embodiments.
Embodiment 18, the laths of metal of welding shear connector is bonded in CFRP strip top surface in this example.Specific implementation step
It is rapid as follows:
1) CFRP strip and laths of metal are got out in factory, the weld stud on laths of metal then will be with peg
Laths of metal, in CFRP strip top surface, forms composite slats by organic structure gluing knot；
2) complex intensifying lath is bonded in and has split steel bridge deck top surface, strengthened lath and extend along direction across bridge；
3) vertical bridge is successively laid to reinforcing bar and direction across bridge reinforcing bar, and steel mesh crossover location can be bound with finer wire；
4) ultra-high performance concrete layer is poured, and is conserved；
Roughening processing is carried out to ultra-high performance concrete layer top surface, and pours wearing course, 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.
Embodiment 19, the laths of metal of welding shear connector is directly bonded to split steel bridge deck top surface in this example, and viscous
Knot the CFRP strip for having split steel bridge deck top surface it is parallel, be alternately arranged.Specific implementation step is as follows:
1) CFRP strip and laths of metal are got out in factory, the weld stud on laths of metal；First by carbon fiber board
Item is splitting steel bridge deck top surface by organic structure gluing knot, and the laths of metal with peg is then passed through organic structure gluing
Knot is splitting steel bridge deck top surface, and it is parallel with CFRP strip, be alternately arranged；Two kinds of laths extend along direction across bridge；
2) vertical bridge is successively laid to reinforcing bar and direction across bridge reinforcing bar, and steel mesh crossover location can be bound with finer wire；
3) ultra-high performance concrete layer is poured, and is conserved；
Roughening processing is carried out to ultra-high performance concrete layer top surface, and pours wearing course, 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.
Claims (8)
1. one kind is to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: it includes having split steel bridge deck, carbon fiber-reinforced
Lath, metal strengthening lath, shear connector, steel mesh, ultra-high performance concrete layer and wearing course, on having split steel facing
It is provided with carbon fiber-reinforced lath, shear connector, the gold with shear connector are welded on the metal strengthening lath
Belong to and strengthen lath setting in carbon fiber-reinforced thereabove, the steel mesh, which is placed in, have been split on steel bridge deck, the superelevation
Can concrete layer be poured into and split on steel bridge deck, and cover carbon fiber-reinforced lath, metal strengthening lath, shear connector,
Steel mesh is connect with steel bridge deck has been split, and the wearing course is covered on very-high performance coagulating layer top surface.
2. one kind is to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: it includes having split steel bridge deck, carbon fiber-reinforced
Lath, metal strengthening lath, shear connector, steel mesh, ultra-high performance concrete layer and wearing course, on having split steel facing
It is provided with carbon fiber-reinforced lath, is welded with shear connector on the metal strengthening lath, the metal with shear connector is strong
Change lath directly weld or it is cementing on having split steel bridge deck and parallel with carbon fiber-reinforced lath, be alternately arranged, the reinforcing bar
Net, which is placed in, have been split on steel bridge deck, and the ultra-high performance concrete layer, which is poured into, have been split on steel bridge deck, and covers carbon fiber
Strengthen lath, metal strengthening lath, shear connector, steel mesh to connect with steel bridge deck has been split, the wearing course is covered on super
High-performance coagulating layer top surface.
3. it is according to claim 1 or 2 to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: the steel mesh
It is made of criss-cross longitudinal reinforcement and transverse steel, the longitudinal reinforcement and transverse steel are uniformly and equidistantly placed in and have split
Between shear connector on steel bridge deck.
4. it is according to claim 1 or 2 to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: the carbon fiber
Strengthen lath and steel bridge deck top surface is being split by organic structure gluing knot, is arranged along direction across bridge.
5. it is according to claim 1 or 2 to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: the steel mesh
Be to include longitudinal and transverse bridge to two layers, wherein direction across bridge steel bar arrangement in upper layer, vertical bridge to steel bar arrangement in lower layer, longitudinal and transverse bridge Xiang Gang
Finer wire binding can be used in the crossover location of muscle, and steel mesh is located at the top of carbon fiber-reinforced plate and metal strengthening plate, and reinforcing bar is straight
It is preferably 25-100mm that diameter, which is preferably 6-16mm, steel mesh spacing,.
6. it is according to claim 1 or 2 to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: the superelevation
Energy concrete layer is poured by ultra-high performance concrete, and the ultra-high performance concrete refers in component containing steel fibre, nothing
Coarse aggregate, water-cement ratio are no more than 0.25, compression strength >=100MPa, axial tensile strength >=5MPa cement-base composite material.
7. it is according to claim 1 or 2 to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: the superelevation
Energy concrete layer is equipped with wearing course, and wearing course includes pitch class and two kinds of resinae.
8. it is according to claim 1 or 2 to fatigue cracking steel bridge deck ruggedized construction, it is characterized in that: the shearing connects
Fitting includes peg, T-steel, L-type steel, channel steel, PBL open pore steel plate, bent-up bar connector.
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| CN201811154520.2A CN109338905A (en) | 2018-09-30 | 2018-09-30 | One kind is to fatigue cracking steel bridge deck ruggedized construction |
| CN2018111545202 | 2018-09-30 |
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| CN201910751567.5A Pending CN110499717A (en) | 2018-09-30 | 2019-08-15 | One kind is to fatigue cracking steel bridge deck ruggedized construction |
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| CN112853963A (en) * | 2021-03-17 | 2021-05-28 | 北京建筑大学 | Orthotropic steel bridge deck weld fatigue reinforcing structure and reinforcing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110184951A (en) * | 2019-05-23 | 2019-08-30 | 长沙理工大学 | Combined bridge deck structure and reinforced construction method with direction across bridge reinforcing strip |
| CN110205937A (en) * | 2019-05-23 | 2019-09-06 | 长沙理工大学 | Orthotropic plate-ultra-high performance concrete combined bridge deck structure and construction method |
| CN113463495A (en) * | 2021-07-21 | 2021-10-01 | 台州市交通勘察设计院有限公司 | Construction method of cast-in-situ steel-concrete composite beam with double main beam longitudinal one-way plates |
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| CN112853963A (en) * | 2021-03-17 | 2021-05-28 | 北京建筑大学 | Orthotropic steel bridge deck weld fatigue reinforcing structure and reinforcing method thereof |
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