CN106638306A - Steel-ultrahigh performance concrete combined bridge deck structure with short-steel-bar anti-shear structures and construction method thereof - Google Patents
Steel-ultrahigh performance concrete combined bridge deck structure with short-steel-bar anti-shear structures and construction method thereof Download PDFInfo
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- CN106638306A CN106638306A CN201710090887.1A CN201710090887A CN106638306A CN 106638306 A CN106638306 A CN 106638306A CN 201710090887 A CN201710090887 A CN 201710090887A CN 106638306 A CN106638306 A CN 106638306A
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- 238000010276 construction Methods 0.000 title claims abstract description 138
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 93
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 150
- 239000010959 steel Substances 0.000 claims abstract description 150
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000010008 shearing Methods 0.000 claims description 90
- 210000003205 muscle Anatomy 0.000 claims description 89
- 238000009826 distribution Methods 0.000 claims description 80
- 230000002787 reinforcement Effects 0.000 claims description 41
- 238000003466 welding Methods 0.000 claims description 34
- 239000004567 concrete Substances 0.000 claims description 27
- 239000011159 matrix material Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 9
- 238000005422 blasting Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 171
- 230000008901 benefit Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 230000002929 anti-fatigue Effects 0.000 description 3
- 239000004574 high-performance concrete Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- 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
- 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel-ultrahigh performance concrete combined bridge deck structure with short-steel-bar anti-shear structures and a construction method thereof. The combined bridge deck structure comprises a steel bridge deck layer (1) and an ultrahigh performance concrete layer (2) poured on the steel bridge deck layer (1). The steel bridge deck layer (1) is fixedly connected with the short-steel-bar anti-shear structures, each short-steel-bar anti-shear structure comprises a plurality of short steel bars (3) fixedly connected to the upper surface of the steel bridge deck layer (1), wherein the short steel bars (3) are horizontally arranged in the longitudinal bridge direction. The short-steel-bar anti-shear structures are wrapped in the ultrahigh performance concrete layer (2). According to the steel-ultrahigh performance concrete combined bridge deck structure with the short-steel-bar anti-shear structures, the thickness of the ultrahigh performance concrete layer can be reduced, the weight of a bridge deck can be lowered, the shear key structure is small in size and simple in construction process, and the steel-ultrahigh performance concrete combined bridge deck structure is especially suitable for large-span flexible bridges which are sensitive in bridge weight.
Description
Technical field
The invention belongs to bridge structure technical field, and in particular to a kind of steel-superelevation with bar dowel shearing resistance construction
Can concrete combined bridge deck structure and its construction method.
Background technology
Compared with steel bridge asphalt concrete pavement, steel bridge concrete pavement has bridge floor local stiffness big, antifatigue
The advantages of life-span is high, thus gradually adopted.In existing steel bridge Bridge Surface Paving by Cement, shearing resistance construction using peg,
The shear connector modes such as structural steel connecting member, PBL connectors, as shown in Figure 1 (using peg as the example of conventional shear connector 10).It is conventional
The height of conventional shear connector 10 is big in shearing resistance construction, and the thickness for causing steel bridge concrete pavement layer 11 increases, and causes bridge floor
Dead load weight increase and reduce economy.Meanwhile, need to be equipped with special construction equipment in the construction of conventional shear connector 10
With personnel, technique is lengthy and tedious, and the efficiency of construction for causing steel bridge concrete pavement declines.
Ultra-high performance concrete has excellent mechanical property, its occur making the developing trend of bridge construction structure in greatly across
Change, lightness.Thus, ultra-high performance concrete is applied on Steel Bridge Deck, the thickness of concrete layer can be reduced, reduce bridge floor
It is weight, and significantly improves the durability of bridge deck.However, according to traditional shearing resistance construction, the slim superelevation on Steel Bridge Deck
Energy concrete layer is difficult to, and it is big that its reason is mainly traditional shear connector height.Therefore, for ultra-high performance concrete is applied to
The situation of steel bridge deck, shearing resistance construction used in traditional steel-concrete combined structure has that shear connector structure size is big, construction
The numerous drawback such as superfluous of technique, it is difficult to meet application demand of the slim ultra-high performance concrete layer in Steel Bridge Deck.
The content of the invention
The technical problem to be solved is to overcome the shortcomings of to be mentioned and defect in background above technology, there is provided one
Planting can reduce concrete layer thickness, it is possible to decrease bridge floor is conducted oneself with dignity, and shear connector structure size is little, construction technology simply has bar dowel
Steel-the ultra-high performance concrete combined bridge deck structure and its construction method of shearing resistance construction.
To solve above-mentioned technical problem, technical scheme proposed by the present invention is：
A kind of steel-ultra-high performance concrete combined bridge deck structure with bar dowel shearing resistance construction, including steel bridge deck layer
With pour the ultra-high performance concrete layer above the steel bridge deck layer, bar dowel shearing resistance is connected with the steel bridge deck layer
Construction, the bar dowel shearing resistance construction includes many bar dowels for being fixed in the steel bridge deck layer upper surface, the bar dowel
Along vertical bridge to being horizontally disposed with, bar dowel shearing resistance construction is embedded in the ultra-high performance concrete layer.The present invention is using along vertical bridge
Construct as shearing resistance to the affixed many bar dowels being arranged on steel bridge deck layer of level, cut with the existing peg being vertically arranged
Power key is compared, and the present invention can pass through the building height that the diameter of adjustment bar dowel very easily adjusts construction.When steel-super
During concrete layer in high performance concrete combined bridge deck structure very thin (such as being only 35mm), conventional peg shear connector is because of height
It is too high and be difficult to be suitable for, the combined bridge deck construction of the present invention can be now used, substantially reduce building height.Additionally, with it is existing
Peg shear connector is compared, and the bar dowel of the present invention is bigger with the contact area of steel bridge deck layer.The weldering of peg and steel bridge deck layer
Junction product is limited because of the impact of peg size, and bar dowel can be long by adjustment reinforcing bar with the bonding area of steel bridge deck layer
Degree is changed, and bar dowel can be made bigger with the bonding area of steel bridge deck layer, and then makes the rigidity that bar dowel shearing resistance is constructed big
In the rigidity of peg shearing resistance construction, the shearing resistance efficiency of shear connector is improved, contribute to improving the combination between steel-ultra-high performance concrete
Stress.Furthermore, the symmetry that existing peg is constructed because of it, its along longitudinal and transverse bridge to shear stiffness it is equal.And steel-superelevation
The vertical, horizontal rigidity of the Orthotropic Steel Bridge Deck of energy concrete combined bridge deck structure.The present invention is by bar dowel along vertical bridge
To being fixed on steel bridge deck layer, the bar dowel along longitudinal and transverse bridge to shear stiffness it is different, more meet Orthotropic Steel Bridge Deck
Loading characteristic.Compared with existing bar-mat reinforcement shearing resistance is constructed, bar dowel is relatively large in diameter the bar dowel shearing resistance construction of the present invention, and
Only need to arrange one layer of longitudinal bar dowel.The big benefit of bar dowel diameter is that single bar dowel is bonded with ultra-high performance concrete
Area is bigger, and then gives full play to shearing resistance efficiency.And do not use the benefit of multistory reinforced net to be using one layer of bar dowel, it is single
Bar dowel can provide longitudinal shear resistance, can also provide horizontal shearing resistance, and not necessarily form welded steel fabric, and its construction is more simplified, applies
Work is easier.Existing bar-mat reinforcement shearing resistance is configured to continuous type shear connector, and research finds this continuous type bar-mat reinforcement shearing resistance construction
Enbrittle destruction the characteristics of (i.e. destroy front interface sliding very little, destruction sign it is unobvious).The company that the present invention constructs shearing resistance
Ideotype is changed into discontinuous form, contributes to increasing prerupture interface sliding, and then improves failure mode.
As the further improvement to above-mentioned technical proposal：
Preferably, many bar dowels arrange that the vertical bridge between adjacent bar dowel is to spacing and direction across bridge by matrix form
Spacing is 150-600mm, and taking this distance values can cause the shear stiffness of bar dowel shearing resistance construction in combined bridge deck structure to fit
In, and cause welding job amount moderate, the shearing resistance requirement at steel-ultra-high performance concrete interface can be met.And the length of bar dowel
Degree is preferably 10-60mm, and bar dowel within this range is much larger than peg and steel bridge deck with the contact area of steel bridge deck layer
The contact area of layer, therefore the rigidity of bar dowel shearing resistance construction can be much larger than the rigidity of peg shearing resistance construction, can improve shear connector
Shearing resistance efficiency, more contribute to improving combination stressed between steel-ultra-high performance concrete.
It is furthermore preferred that length of the length on the upper edge of the bar dowel more than its lower edge, the end face of bar dowel and its vertical
The angle theta of introversion is formed between face, the angle theta is 0 ° -45 °.Thus, ultra-high performance concrete layer and steel bridge deck layer can be made
Between connect more firmly, prevent from pulling away.
It is furthermore preferred that the bottom of the steel bridge deck layer is provided with longitudinal rib web, the bar dowel and the longitudinal rib web
Between be spaced 50-150mm.It is arranged such and mainly have 2 reasons：One is that longitudinal rib web is connected with steel bridge deck layer bottom
There is weld seam, if again bar dowel is placed into into longitudinal rib web tip position welded with steel bridge deck layer, Steel Bridge Deck can be caused
Flaggy is two-sided to be welded, and there is stress concentration, and to structure stress adverse effect can be played；Two be at longitudinal rib web local support rigidity compared with
Greatly, if bar dowel is placed into into the welding of longitudinal rib web position, the tired shear stress in bar dowel can be caused excessive, can be to short steel
Muscle itself stress is unfavorable.
Preferably, bar-mat reinforcement tension construction, the bar-mat reinforcement tension construction are configured with the ultra-high performance concrete layer
For multiple-layer stacked steel bar combined structure.
In combinations of the above bridge deck structure, described bar-mat reinforcement tension construction can be preferably in following two versions
Any one.Wherein the first version includes the vertical muscle distribution layer being configured in the ultra-high performance concrete layer and ties up
The horizontal bar distribution layer pricked or be welded to above the vertical muscle distribution layer, the vertical muscle distribution layer and the horizontal bar distribution layer intersect
Reinforcing bar network structure.Horizontal pad muscle distribution layer that second version includes being configured in the ultra-high performance concrete layer,
Colligation or the vertical muscle distribution layer being welded to above the horizontal pad muscle distribution layer and colligation are welded to the vertical muscle distribution layer
The horizontal bar distribution layer of top, the vertical muscle distribution layer and the horizontal bar distribution layer intersect in reinforcing bar network structure, the horizontal pad
Muscle distribution layer is made up of the horizontal pad muscle of many matrix arrangements.
It is furthermore preferred that the vertical muscle distribution layer is constituted along suitable bridge from many to the vertical muscle of the tension be arrangeding in parallel, the horizontal bar
Distribution layer is constituted by many along the tension horizontal bar that direction across bridge be arranged in parallel.
Preferably, the ultra-high performance concrete layer is poured by ultra-high performance concrete and formed, the very-high performance coagulation
Soil refers in component containing steel fibre and the cement concrete without coarse aggregate that the compression strength of the ultra-high performance concrete is not low
In 100MPa, axial tensile strength is not less than 7MPa；Wearing course is provided with above the ultra-high performance concrete layer.
The combined bridge deck structure of the present invention is configured to ultra-high performance concrete layer and Steel Bridge Deck by affixed bar dowel shearing resistance
Shear connections are provided between flaggy, its structure height is little, shearing strength big, is a kind of reliable and stable shearing resistance make.Together
When, the combined bridge deck structure has stronger flexibility and adaptability, different straight due to may be selected in bar dowel shearing resistance construction
The bar dowel in footpath, and then the height of bar dowel can be conveniently adjusted, to adapt to different-thickness very-high performance on steel bridge deck layer
The shearing resistance demand of concrete layer；Due to may be selected to set up laterally pad muscle in bar-mat reinforcement tension construction, and then can be conveniently adjusted
The height of bar-mat reinforcement, to adapt to the tension demand of different-thickness ultra-high performance concrete layer on steel bridge deck layer.Additionally, of the invention
Not only structure simplifies the bar-mat reinforcement shearing resistance construction of configuration, process is simple, and with good operability and economy.By weldering
Connect shearing resistance bar dowel to be attached, thin layer ultra-high performance concrete forms the monoblock type combined bridge deck of common stress with steel bridge deck
Structure, significantly reduces the stress amplitude in steel bridge panel structure under vehicle loading repeatedly, improves its anti-fatigue life.
As a total technology design, present invention also offers above-mentioned steel-superelevation with bar dowel shearing resistance construction
The construction method of energy concrete combined bridge deck structure.Because above-mentioned bar-mat reinforcement tension construction includes two kinds of different versions,
Two kinds of preferred construction methods are provided respectively below for both preferred bar-mat reinforcement tension constructions.
For the first bar-mat reinforcement tension construction, the construction method that the present invention is provided is comprised the following steps：
S1, erection girder steel：Prefabricated, the live splicing operation of girder steel is carried out successively according to conventional steel bridge method for bridge construction,
Until completing steel girder erection obtains steel bridge deck layer；
S2, construction welding short steel rod, laying bar-mat reinforcement：Steel bridge deck layer to having set up carries out derusting by sandblasting；Then will
Many bar dowels are welded on steel bridge deck layer by matrix arrangement and form bar dowel shearing resistance construction, and bar dowel bottom is ensured during welding
The directly welding completely of the top surface of face and steel bridge deck layer, and anticorrosive coating is carried out to steel bridge deck layer, bar dowel shearing resistance construction；Again
By the vertical muscle of tension, along bridge, longitudinally configuration forms vertical muscle distribution layer on steel bridge deck layer；By tension horizontal bar along bridge lateral colligation
Or point is welded on the vertical muscle of shearing resistance and forms horizontal bar distribution layer；Welding slag is removed, muscle distribution layer is indulged and horizontal bar distribution layer composition bar-mat reinforcement is resisted
Draw construction；
S3, cast ultra-high performance concrete layer：In above-mentioned super of the steel bridge deck layer upper after the construction of step S2
High performance concrete, and ensure that bar dowel shearing resistance construction and bar-mat reinforcement tension construction are embedded in ultra-high performance concrete, shape
Into ultra-high performance concrete layer；
S4, making wearing course：Shot Blasting, and making abrasion above it are carried out in ultra-high performance concrete layer top surface
Layer, completes the construction of steel-ultra-high performance concrete combined bridge deck structure.
For second bar-mat reinforcement tension construction, the construction method that the present invention is provided is comprised the following steps：
S1, erection girder steel：Prefabricated, the splicing operation of girder steel are carried out successively according to conventional steel bridge method for bridge construction, until
Complete steel girder erection and obtain steel bridge deck layer；
S2, construction welding short steel rod, laying bar-mat reinforcement：Steel bridge deck layer to having set up carries out derusting by sandblasting；Then will
Many bar dowels are welded on steel bridge deck layer by matrix arrangement and form bar dowel shearing resistance construction, and bar dowel bottom is ensured during welding
The directly welding completely of the top surface of face and steel bridge deck layer, to steel bridge deck layer, bar dowel shearing resistance construction anticorrosive coating is carried out；Again will
Many horizontal pad muscle are placed on steel bridge deck layer by matrix arrangement, form laterally pad muscle distribution layer, then tension is indulged into muscle edge
Bridge longitudinal direction colligation is welded on the vertical muscle distribution layer of formation on laterally pad muscle distribution layer, and tension vertical muscle is connected when welding by spot welding
Connect；Tension horizontal bar is welded on the vertical muscle of tension along bridge lateral colligation or point and forms horizontal bar distribution layer, remove welding slag, laterally pad muscle
Distribution layer, vertical muscle distribution layer and horizontal bar distribution layer composition bar-mat reinforcement tension construction；
S3, cast ultra-high performance concrete layer：In the steel bridge deck layer upper very-high performance after the construction of step S2
Concrete, and ensure that horizontal pad muscle distribution layer, bar dowel shearing resistance construction and bar-mat reinforcement tension construction are embedded in very-high performance and mix
In solidifying soil, ultra-high performance concrete layer is formed；
S4, making wearing course：Shot Blasting, and making abrasion above it are carried out in ultra-high performance concrete layer top surface
Layer, completes the construction of steel-ultra-high performance concrete combined bridge deck structure.
Compared with prior art, it is an advantage of the current invention that：
(1) by being arranged on bar dowel shearing resistance construction on steel bridge deck layer to level is affixed using along vertical bridge, significantly reduce
The design height of steel bridge deck layer and ultra-high performance concrete shearing strength at intersection construction, and then cause steel-ultra-high performance concrete
The design thickness of ultra-high performance concrete layer reduces in combined bridge deck structure, and making the deadweight of combined bridge deck structure reduces, and realizes
Thin layer and combined bridge deck structure the lightness of ultra-high performance concrete layer, improves the force-bearing situation of composite bridge.
Steel-very-high performance the combined bridge deck structure constructed using this shearing resistance is particularly suited for flexible to extremely sensitive Long span of conducting oneself with dignity
Bridge (such as suspension bridge).
(2) by being constructed using bar dowel shearing resistance, the bar dowel can be by adjustment with the bonding area of steel bridge deck layer
Reinforcing bar length is changed, and bar dowel can be made bigger with the bonding area of steel bridge deck layer, and steel bridge deck layer is mixed with very-high performance
The faying face of solidifying soil layer has reliable shear connections, and the stress in steel bridge panel structure under vehicle loading can be greatly lowered
Width, extends its anti-fatigue life, improves the durability of bridge deck.
(3) shearing resistance adopted in combined bridge deck structure of the invention is configured to welding short steel rod, it is only necessary to which common reinforcing bar is
The bar dowel shearing resistance construction that the present invention is obtained can be processed, the shear connector or WELDING STUDS without the need for being processed into given shape is not only drawn materials
It is convenient, and handling ease.
(4) setting of bar dowel shearing resistance construction and complicated construction technology and height need not be adopted in the combined bridge deck structure
The construction equipment of input, can be welded on bar dowel on steel bridge deck layer using ordinary soldering techniques, form bar dowel shearing resistance
Construction, equipment investment is little, simple to operation, relatively low to labor quality and technological requirement.
In sum, by the shearing resistance make of high efficient and reliable in the combined bridge deck structure, the steel-thin layer of the present invention surpasses
High performance concrete combined bridge deck structure has that building height is little, dead load is light, local stiffness is big, combination interlayer shear connections
The advantages of reliability, good fatigue resistance, easy construction, with great use value and good economic benefit, in steel bridge construction
Field has broad application prospects.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation (cross-sectional view) of conventional orthorhombic opposite sex steel box-girder integral rigidity bridge floor in prior art.
Fig. 2 is the partial perspective of the overlook direction of steel-ultra-high performance concrete combined bridge deck structure in the embodiment of the present invention 1
Figure.
Fig. 3 is the cutaway view Amplified image (not shown longitudinal rib web) in Fig. 2 at A-A.
Fig. 4 is that the cutaway view Amplified image in Fig. 2 at B-B (is rotated by 90 °；Not shown longitudinal rib web).
Fig. 5 is the partial perspective of the overlook direction of steel-ultra-high performance concrete combined bridge deck structure in the embodiment of the present invention 2
Figure.
Fig. 6 is the cutaway view Amplified image (not shown longitudinal rib web) in Fig. 5 at C-C.
Fig. 7 is that the cutaway view Amplified image in Fig. 5 at D-D (is rotated by 90 °；Not shown longitudinal rib web).
Fig. 8 is the schematic diagram that bar dowel and steel bridge deck layer weld putting position.
Marginal data：
1st, steel bridge deck layer；2nd, ultra-high performance concrete layer；3rd, bar dowel；5th, muscle is laterally padded；6th, the vertical muscle of tension；7th, tension
Horizontal bar；8th, wearing course；9th, longitudinal rib web；10th, shear connector；11st, concrete pavement layer.
Specific embodiment
For the ease of understanding the present invention, more complete is made to the present invention below in conjunction with Figure of description and preferred embodiment
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another
When on element, it can be directly fixed, affixed, connection or connect on another element, or by connecting in the middle of other
Fitting is indirectly fixed, affixed, connection or connection are on another element.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to limit the present invention
Protection domain.
Embodiment 1
As shown in Figure 2, Figure 3 and Figure 4, a kind of steel-ultra-high performance concrete with bar dowel shearing resistance construction of the present invention
Combined bridge deck structure, the combined bridge deck structure includes that steel bridge deck layer 1 is mixed with the very-high performance poured in the top of steel bridge deck layer 1
Solidifying soil layer 2.The bottom of steel bridge deck layer 1 is provided with longitudinal rib web 9, bar dowel shearing resistance structure is welded with steel bridge deck layer 1
Make and be configured with bar-mat reinforcement tension construction.The bar dowel shearing resistance construction and bar-mat reinforcement tension construction are embedded in very-high performance coagulation
In soil layer 2.Many shearing resistance bar dowels 3 are welded on formation bar dowel shearing resistance structure on steel bridge deck layer 1 to matrix arrangement along vertical bridge
Make.Bar dowel 3 is horizontally disposed, and the vertical bridge between adjacent bar dowel 3 to spacing and direction across bridge spacing are both preferably 150-
600mm, the length of bar dowel 3 is preferably 10-60mm.50-150mm is preferably spaced between bar dowel 3 and longitudinal rib web 9
(as shown in L1 in Fig. 2).And the angle theta of introversion is formed between the end face of bar dowel 3 and its vertical guide, i.e. the upper edge of bar dowel 3
More than the length of its lower edge, the angle theta is 0 ° -45 ° (referring to Fig. 8) to length.
The bar-mat reinforcement tension is configured to double-deck superposition steel bar combining structure.The bilayer is superimposed the steel of steel bar combining structure
Muscle net tension construction includes being configured at the vertical muscle distribution layer of the top surface of steel bridge deck layer 1 and colligation or being welded on the vertical muscle distribution layer
It is in reinforcing bar network structure that the horizontal bar distribution layer of side, the vertical muscle distribution layer and horizontal bar distribution layer intersect.In the combined bridge deck structure
Vertical muscle distribution layer be from many along bridge longitudinal direction (along bridge to) the vertical muscle 6 of tension arranged in parallel constitutes；And horizontal bar distribution layer
Constituted along bridge lateral (direction across bridge) tension horizontal bar 7 arranged in parallel by many.Superelevation in the combined bridge deck structure
Performance concrete layer 2 is to be poured to form by ultra-high performance concrete, and the ultra-high performance concrete in component using containing steel fibre
And the cement concrete of non-coarse aggregate, its compression strength is not less than 100MPa, axial tensile strength and is not less than 7MPa.In very-high performance
The top of concrete layer 2 is provided with wearing course 8.
The construction method of the above-mentioned steel-ultra-high performance concrete combined bridge deck structure with bar dowel shearing resistance construction is concrete
Comprise the following steps：
(1) girder steel is set up：Prefabricated, the live splicing operation of girder steel is carried out successively according to conventional steel bridge method for bridge construction,
Until completing steel girder erection obtains steel bridge deck layer 1；
(2) construction welding short steel rod, laying bar-mat reinforcement：Steel bridge deck layer 1 to having set up carries out derusting by sandblasting, to ensure
The surface cleaning of steel bridge deck layer 1, light；Then many bar dowels 3 are welded on steel bridge deck layer 1 by matrix arrangement and are formed
Bar dowel shearing resistance is constructed, and the top surface directly welding completely of the bottom surface of bar dowel 3 and steel bridge deck layer 1 is ensured during welding, to Steel Bridge Deck
Flaggy 1 and bar dowel shearing resistance construction carry out anticorrosive coating；The vertical muscle 6 of tension is longitudinally configured on steel bridge deck layer 1 along bridge again
Form vertical muscle distribution layer；Tension horizontal bar 7 is welded on the vertical muscle 6 of shearing resistance along bridge lateral colligation or point and forms horizontal bar distribution layer；Clearly
Except welding slag, muscle distribution layer and horizontal bar distribution layer composition bar-mat reinforcement tension construction are indulged；
(3) ultra-high performance concrete layer is poured into a mould：It is above-mentioned in the upper of steel bridge deck layer 1 after step (2) construction
Ultra-high performance concrete, and ensure that bar dowel shearing resistance construction and bar-mat reinforcement tension construction are embedded in ultra-high performance concrete,
Form ultra-high performance concrete layer 2；
(4) making wearing course：Shot Blasting, and making abrasion above it are carried out in the top surface of ultra-high performance concrete layer 2
Layer 8, completes the construction of steel-ultra-high performance concrete combined bridge deck structure.
Embodiment 2
As shown in Fig. 5, Fig. 6 and Fig. 7, a kind of steel-ultra-high performance concrete with bar dowel shearing resistance construction of the present invention
Combined bridge deck structure, the combined bridge deck structure includes that steel bridge deck layer 1 is mixed with the very-high performance poured in the top of steel bridge deck layer 1
Solidifying soil layer 2.The bottom of steel bridge deck layer 1 is provided with longitudinal rib web 9, bar dowel shearing resistance structure is welded with steel bridge deck layer 1
Make and be configured with bar-mat reinforcement tension construction.The bar dowel shearing resistance construction and bar-mat reinforcement tension construction are embedded in very-high performance coagulation
In soil layer 2.Many shearing resistance bar dowels 3 are welded on formation bar dowel shearing resistance structure on steel bridge deck layer 1 to matrix arrangement along vertical bridge
Make.Bar dowel 3 is horizontally disposed, and the vertical bridge between adjacent bar dowel 3 to spacing and direction across bridge spacing are both preferably 150-
600mm, the length of bar dowel 3 is preferably 10-60mm.50-150mm is preferably spaced between bar dowel 3 and longitudinal rib web 9
(as shown in L1 in Fig. 5).And the angle theta of introversion is formed between the end face of bar dowel 3 and its vertical guide, i.e. the upper edge of bar dowel 3
More than the length of its lower edge, the angle theta is 0 ° -45 ° (referring to Fig. 8) to length.
The bar-mat reinforcement tension is configured to three stackings plus steel bar combining structure.Three stacking plus the steel of steel bar combining structure
Muscle net tension is constructed to be included the horizontal pad muscle distribution layer for being configured at the top surface of steel bridge deck layer 1, colligation or to be welded in laterally pad muscle point
Vertical muscle distribution layer and colligation above layer of cloth or the horizontal bar distribution layer being welded in above vertical muscle distribution layer.The vertical muscle distribution layer and horizontal stroke
It is in reinforcing bar network structure that muscle distribution layer intersects.Laterally pad muscle distribution layer is made up of the horizontal pad muscle 5 of many matrix arrangements, is indulged
Muscle distribution layer is constituted by many along the vertical muscle 6 of bridge tension longitudinally arranged in parallel.Horizontal bar distribution layer is along bridge by many
Beam tension horizontal bar 7 laterally arranged in parallel is constituted.The ultra-high performance concrete layer 2 of the combined bridge deck structure is by superelevation
Can concreting form, the ultra-high performance concrete be component in containing steel fibre and non-coarse aggregate cement concrete, its
Compression strength is not less than 100MPa, axial tensile strength and is not less than 7MPa.The top of the ultra-high performance concrete layer 2 is provided with abrasion
Layer 8.
The construction method of the above-mentioned steel-ultra-high performance concrete combined bridge deck structure with bar dowel shearing resistance construction is concrete
Comprise the following steps：
(1) girder steel is set up：Prefabricated, the live splicing (welding) of girder steel is carried out successively according to conventional steel bridge method for bridge construction
Operation, until completing steel girder erection obtains steel bridge deck layer 1；
(2) construction welding short steel rod, laying bar-mat reinforcement：Steel bridge deck layer 1 to having set up carries out derusting by sandblasting, to ensure
The surface cleaning of steel bridge deck layer 1, light；Then many bar dowels 3 are welded on steel bridge deck layer 1 by matrix arrangement and are formed
Bar dowel shearing resistance is constructed, and the top surface directly welding completely of the bottom surface of bar dowel 3 and steel bridge deck layer 1 is ensured during welding, to Steel Bridge Deck
Flaggy 1 and bar dowel shearing resistance construction carry out anticorrosive coating；Many are laterally padded muscle 5 again and be placed in steel bridge deck by matrix arrangement
On layer 1, form laterally pad muscle distribution layer, then by the vertical muscle 6 of tension along bridge longitudinal direction (along bridge to) colligation or be welded on laterally pad muscle
Vertical muscle distribution layer is formed on distribution layer, tension vertical muscle 6 is connected when welding by spot welding；By tension horizontal bar 7 along bridge lateral colligation
Or point is welded on the vertical muscle 6 of tension and forms horizontal bar distribution layer, removes welding slag, laterally pad muscle distribution layer, vertical muscle distribution layer and horizontal bar point
Layer of cloth composition bar-mat reinforcement tension construction；
(3) ultra-high performance concrete layer is poured into a mould：In the upper superelevation of steel bridge deck layer 1 after step (2) construction
Energy concrete, and ensure that bar dowel shearing resistance construction, bar-mat reinforcement tension construction are embedded in ultra-high performance concrete, form superelevation
Performance concrete layer 2；
(4) making wearing course：Shot Blasting, and making abrasion above it are carried out in the top surface of ultra-high performance concrete layer 2
Layer 8, completes the construction of steel-ultra-high performance concrete combined bridge deck structure.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of steel-ultra-high performance concrete combined bridge deck structure with bar dowel shearing resistance construction, including steel bridge deck layer (1)
With pour the ultra-high performance concrete layer (2) above the steel bridge deck layer (1), it is characterised in that：The steel bridge deck layer
(1) bar dowel shearing resistance construction is connected with, the bar dowel shearing resistance construction includes that many are fixed on the steel bridge deck layer (1)
The bar dowel (3) on surface, along vertical bridge to being horizontally disposed with, bar dowel shearing resistance construction is embedded in the superelevation to the bar dowel (3)
In energy concrete layer (2).
2. it is according to claim 1 with bar dowel shearing resistance construction steel-ultra-high performance concrete combined bridge deck structure, its
It is characterised by：The many bar dowels (3) arrange that the vertical bridge between adjacent bar dowel (3) is to spacing and direction across bridge by matrix form
Spacing is 150-600mm, and the length of bar dowel (3) is 10-60mm.
3. it is according to claim 2 with bar dowel shearing resistance construction steel-ultra-high performance concrete combined bridge deck structure, its
It is characterised by：The length on the upper edge of the bar dowel (3) is more than the length of its lower edge, end face and its vertical guide of bar dowel (3)
Between formed introversion angle theta, the angle theta be 0 ° -45 °.
4. it is according to claim 3 with bar dowel shearing resistance construction steel-ultra-high performance concrete combined bridge deck structure, its
It is characterised by：The bottom of the steel bridge deck layer (1) is provided with longitudinal rib web (9), the bar dowel (3) and the longitudinal rib web
(9) 50-150mm is spaced between.
5. it is according to claim 1 with bar dowel shearing resistance construction steel-ultra-high performance concrete combined bridge deck structure, its
It is characterised by：Bar-mat reinforcement tension construction is configured with the ultra-high performance concrete layer (2), the bar-mat reinforcement tension is configured to many
Stacking plus steel bar combined structure.
6. it is according to claim 5 with bar dowel shearing resistance construction steel-ultra-high performance concrete combined bridge deck structure, its
It is characterised by：Bar-mat reinforcement tension construction include the vertical muscle distribution layer being configured in the ultra-high performance concrete layer (2) and
Colligation or the horizontal bar distribution layer being welded to above the vertical muscle distribution layer, the vertical muscle distribution layer and the horizontal bar distribution layer intersect
In reinforcing bar network structure, the vertical muscle distribution layer is constituted along suitable bridge from many to the vertical muscle (6) of the tension be arrangeding in parallel, the horizontal bar
Distribution layer is constituted by many along the tension horizontal bar (7) that direction across bridge be arranged in parallel.
7. it is according to claim 5 with bar dowel shearing resistance construction steel-ultra-high performance concrete combined bridge deck structure, its
It is characterised by：The bar-mat reinforcement tension construction includes the horizontal pad muscle distribution being configured in the ultra-high performance concrete layer (2)
Layer, colligation or the vertical muscle distribution layer being welded to above the horizontal pad muscle distribution layer and colligation are welded to the vertical muscle distribution
Horizontal bar distribution layer above layer, the vertical muscle distribution layer and the horizontal bar distribution layer intersect in reinforcing bar network structure, the vertical muscle
Distribution layer from many along constituting to the vertical muscle (6) of the tension be arrangeding in parallel along bridge, by many along direction across bridge put down by the horizontal bar distribution layer
Tension horizontal bar (7) composition that row is arranged, the horizontal pad muscle distribution layer is made up of the horizontal pad muscle (5) of many matrix arrangements.
8. the steel with bar dowel shearing resistance construction according to any one of claim 1-7-ultra-high performance concrete combination
Bridge deck structure, it is characterised in that：The ultra-high performance concrete layer (2) is poured by ultra-high performance concrete and is formed, the superelevation
Performance concrete refers in component containing steel fibre and the cement concrete without coarse aggregate, the resistance to compression of the ultra-high performance concrete
Intensity is not less than 100MPa, and axial tensile strength is not less than 7MPa；Wearing course is provided with above the ultra-high performance concrete layer (2)
(8)。
9. a kind of as claimed in claim 6 with the steel-ultra-high performance concrete combined bridge deck structure of bar dowel shearing resistance construction
Construction method, comprise the following steps：
S1, erection girder steel：Prefabricated, the live splicing operation of girder steel is carried out successively according to conventional steel bridge method for bridge construction, until
Complete steel girder erection and obtain steel bridge deck layer (1)；
S2, construction welding short steel rod, laying bar-mat reinforcement：Steel bridge deck layer (1) to having set up carries out derusting by sandblasting；Then will be many
Root bar dowel (3) is welded on steel bridge deck layer (1) by matrix arrangement and forms bar dowel shearing resistance construction, and short steel is ensured during welding
The directly welding completely of the top surface of muscle (3) bottom surface and steel bridge deck layer (1), and to steel bridge deck layer (1) and bar dowel shearing resistance construction
Carry out anticorrosive coating；The vertical muscle (6) of tension is longitudinally configured on steel bridge deck layer (1) along bridge again forms vertical muscle distribution layer；Will
Tension horizontal bar (7) is welded on the vertical muscle (6) of shearing resistance along bridge lateral colligation or point and forms horizontal bar distribution layer；Welding slag is removed, muscle point is indulged
Layer of cloth and horizontal bar distribution layer composition bar-mat reinforcement tension construction；
S3, cast ultra-high performance concrete layer：In the above-mentioned superelevation of steel bridge deck layer (1) upper after the construction of step S2
Performance concrete, and ensure that bar dowel shearing resistance construction and bar-mat reinforcement tension construction are embedded in ultra-high performance concrete, formed
Ultra-high performance concrete layer (2)；
S4, making wearing course：Shot Blasting, and making wearing course above it are carried out in ultra-high performance concrete layer (2) top surface
(8) construction of steel-ultra-high performance concrete combined bridge deck structure, is completed.
10. a kind of as claimed in claim 7 with the steel-ultra-high performance concrete combined bridge deck structure of bar dowel shearing resistance construction
Construction method, comprise the following steps：
S1, erection girder steel：Prefabricated, the splicing operation of girder steel are carried out successively according to conventional steel bridge method for bridge construction, until completing
Steel girder erection obtains steel bridge deck layer (1)；
S2, construction welding short steel rod, laying bar-mat reinforcement：Steel bridge deck layer (1) to having set up carries out derusting by sandblasting；Then will be many
Root bar dowel (3) is welded on steel bridge deck layer (1) by matrix arrangement and forms bar dowel shearing resistance construction, and short steel is ensured during welding
The directly welding completely of the top surface of muscle (3) bottom surface and steel bridge deck layer (1), and to steel bridge deck layer (1) and bar dowel shearing resistance construction
Carry out anticorrosive coating；Many are laterally padded muscle (5) again to be placed on steel bridge deck layer (1) by matrix arrangement, then tension is indulged
Muscle (6) is along bridge longitudinal direction colligation or is welded on the vertical muscle distribution layer of formation on laterally pad muscle distribution layer, and tension is indulged logical when muscle (6) is welded
Cross spot welding connection；Tension horizontal bar (7) is welded on the vertical muscle (6) of tension along bridge lateral colligation or point and forms horizontal bar distribution layer, clearly
Except welding slag, laterally pad muscle distribution layer, vertical muscle distribution layer and horizontal bar distribution layer composition bar-mat reinforcement tension are constructed；
S3, cast ultra-high performance concrete layer：Mix in steel bridge deck layer (1) the upper very-high performance after the construction of step S2
Solidifying soil, and ensure that bar dowel shearing resistance construction, laterally pad muscle distribution layer and bar-mat reinforcement tension construction are embedded in very-high performance coagulation
In soil, ultra-high performance concrete layer (2) is formed；
S4, making wearing course：Shot Blasting, and making wearing course above it are carried out in ultra-high performance concrete layer (2) top surface
(8) construction of steel-ultra-high performance concrete combined bridge deck structure, is completed.
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| CN106638306B (en) | 2018-08-03 |
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