CN106284044A - A kind of Novel steel concrete composite bridge and construction method thereof - Google Patents
A kind of Novel steel concrete composite bridge and construction method thereof Download PDFInfo
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- CN106284044A CN106284044A CN201610761354.7A CN201610761354A CN106284044A CN 106284044 A CN106284044 A CN 106284044A CN 201610761354 A CN201610761354 A CN 201610761354A CN 106284044 A CN106284044 A CN 106284044A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The present invention relates to a kind of steel concrete combined bridge and construction method thereof.A kind of Novel steel concrete composite bridge, it is characterised in that include curing concrete floorings and WELDING STUDS in girder, cast-in-place SAP；Cluster type or even distribution type WELDING STUDS are set on described girder；Girder is some along direction across bridge assembling, and all girders connect formation entirety along bridge longitudinally through end connecting plate, constitute porous one；Described girder end face arranges perforate ribbed stiffener and scribbles epoxy bond layer；Maintenance in SAP is poured on epoxy bond layer；Concrete forms curing concrete floorings in cast-in-place SAP, WELDING STUDS, vertically and horizontally bar-mat reinforcement and perforate ribbed stiffener and is positioned at cast-in-place SAP curing concrete floorings.With the top flange steel plate of FRP plate or T steel beam as template, high-strength light, stress performance are good and without removing；In SAP, curing concrete shrinkage and creep effect is little, it is to avoid conventional concrete floorings super large is a difficult problem easy to crack time ultra-thin；Substantially reduce the floor stand construction impact on urban transportation.
Description
Technical field
The present invention relates to a kind of Composite Steel-Concrete Bridges and construction method thereof.
Background technology
At present, along with the continuous aggravation of the city over-saturation volume of traffic, urban viaduct is able to fast development, overpass conduct
Important step in stereo urban traffic, it is possible to significantly alleviate traffic pressure, saves city space, promotes people's lives quality,
Promote rapid urban.Traditional cities overpass based on (prestressing force) reinforced beam, from great, long construction period,
Cast in situs necessarily brings a serious traffic congestion difficult problem；In recent years, steel bridge starts progressively to develop, and from heavy and light, constructs convenient, but
Being Steel Bridge Deck Pavement passage, gather around the diseases such as bag and be difficult to overcome, construction cost is high, serious hinders its development and application, and steel-mixed
Solidifying soil combined bridge has given full play to the high feature good with concrete anti-compression performance of steel tensile strength, has significant technology warp
Ji comprehensive advantage.In recent years, the urban transportation infrastructure construction such as overpass development is swift and violent, has working space limited,
The most how the distinguishing features such as the duration is urgent, and bottom traffic flow is big, concrete slab is easy to crack, carry with structure based on material
Going out to be applicable to the novel bridge that urban viaduct constructs safely and fast is the important problem faced at present.
FRP (Fiber Reinforced Polymer/Plastic, i.e. fibre reinforced composites, be called for short FRP) be by
The novel high-performance material that fibrous material and matrix material mix according to a certain percentage and formed through process combining such as pultrusion, hands pastes
Material, in recent years, FRP is high-strength with it, lightweight, corrosion-resistant, the advantage such as have good workability start to be applied in civil engineering, and
Progressively by engineering circles extensive concern.
((Super Absorbent Polymer, i.e. super absorbent resin are called for short SAP), interior curing concrete was a kind of for SAP
Using super absorbent resin (SAP) after prewetting as the concrete of interior conserving material, several functions of can prewetting in maintenance processes tries
Agent, thus reach different maintenance effect, it is to avoid because of the concrete caused by internal moisture disappearance in conventional concrete maintenance processes
Problems of crack.
Therefore, based on above-mentioned FRP material and the feature of curing concrete in SAP, face is built for current urban viaduct
The difficult problem faced, the present invention with the top flange steel plate (hereinafter referred to as steel plate) of FRP plate or T steel beam as template, one-piece casting SAP
Interior curing concrete floorings, form combined bridge overall structure, have not only given full play to curing concrete in steel-FRP-SAP
Material advantage, it is to avoid in super large superthin concrete floorings shrinkage cracking and the floorings that cause thereof, steel bar corrosion, girder ooze
The problems such as water and steel girder corrosion, and it is obviously improved combined bridge entirety mechanical property, reduce bridge to working space
With the demand of plant equipment, reduce the cast-in-place formwork erection of concrete slab-form removal operation, save the construction period, scene is greatly reduced
The urban traffic blocking polluting and causing of Construction on Environment, also overcomes a Steel Bridge Deck Pavement rapid wear difficult problem simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of novel steel-concrete combined bridge and construction method thereof, promote bridge overall
Stress performance, solves the urban traffic blocking difficult problem that the construction of urban viaduct long-term floor stand causes.
For achieving the above object, the technical solution adopted in the present invention is: a kind of novel steel-concrete combined bridge, its
It is characterised by including curing concrete floorings and WELDING STUDS in girder, cast-in-place SAP；Cluster type or all is set on described girder
Cloth WELDING STUDS；Girder along direction across bridge assembling some (such as 3～20), all girders along bridge longitudinally through end connecting plate
Connect and form overall (forming entirety longitudinally through end connecting plate bolt anchoring connection along bridge), constitute porous one (porous one
Bridge length between a length of two adjacent expansion joints of connection girder)；
The end face of described girder along direction across bridge arrange perforate ribbed stiffener (distance between adjacent apertures ribbed stiffener be 1～
3m), and the end face of described girder scribbles epoxy bond layer, and perforate ribbed stiffener is equally spaced multiple hole (aperture
Being 10～50mm, the distance between adjacent holes is 100～200mm, and the number of hole determines according to bridge width), longitudinal steel
Muscle is longitudinally equally spaced (such as colligation) along bridge is formed on longitudinal reinforcement through the hole on perforate ribbed stiffener, transverse steel
Vertically and horizontally bar-mat reinforcement；In pouring SAP on epoxy bond layer, curing concrete forms curing concrete bridge floor in cast-in-place SAP
Plate, WELDING STUDS, vertically and horizontally bar-mat reinforcement and perforate ribbed stiffener be positioned at cast-in-place SAP curing concrete floorings (its FRP plate or
Put more energy into by epoxy bond layer, perforate between curing concrete floorings in the top flange steel plate of T steel beam and cast-in-place SAP
Rib and vertically and horizontally bar-mat reinforcement add strong ties；In cast-in-place SAP between curing concrete floorings and girder by WELDING STUDS even
Connect)；
Described girder is steel I-beam and FRP plate connection formation, and the top flange plate of steel I-beam arranges WELDING STUDS, FRP
Plate is positioned at the end face of steel I-beam, and FRP plate is fixed with steel I-beam by WELDING STUDS；Or, described girder is T steel beam, T-shaped
The top flange steel plate of girder steel arranges WELDING STUDS.
According to technique scheme, the described girder some along direction across bridge assembling, the distance between adjacent girder is
1.0～3.0 meters (root Ju Bridge Design width determines girder number).
According to technique scheme, end connecting plate is arranged at support position, and end connecting plate arranges local longitudinal stiffener
And anyhow to WELDING STUDS, connect along bridge longitudinally through anchor bolt.
According to technique scheme, the thickness of described epoxy bond layer is 3～5mm；Described epoxy bond layer 6
Material can be epoxy resin.
According to technique scheme, in described cast-in-place SAP, the thickness of curing concrete floorings is 18～30cm.
According to technique scheme, described perforate ribbed stiffener is FRP perforate ribbed stiffener or steel perforate ribbed stiffener, version
Can be I-shaped, Contraband shape or U-shaped；FRP perforate ribbed stiffener is bonded in FRP plate by epoxy bond layer；Steel perforate adds
Strength rib is pre-welded to the top flange steel plate of T steel beam, after girder assembly, welds horizontally-spliced slit integral.
According to technique scheme, WELDING STUDS can use even distribution type or cluster type；A diameter of Ф 15mm of WELDING STUDS～
Ф 30mm, height is 80mm～350mm, and between adjacent WELDING STUDS, spacing is 100mm～115mm；WELDING STUDS group's spacing is
300mm～800mm (along bridge longitudinally, WELDING STUDS group's gap variable).
According to technique scheme, in described SAP curing concrete by cement, flyash, breeze, sand, rubble, water,
Water reducer, toughness reinforcing anticracking material, reduce toughener and super absorbent resin (SAP) stirring form, the proportioning of each composition presses kg/m3
Meter is respectively as follows: cement 380～550, flyash 80～140, breeze 50～160, sand 570～620, rubble 880～920, water 160
～170, water reducer 8～8.5, toughness reinforcing anticracking material 2～4, reduce that toughener volume is cement consumption 0.5%～1.5% is high
Water-absorbing resins (SAP) volume is the 0.2%～0.4% of cement quality.Wherein super absorbent resin (SAP) is completely dried condition
Lower particle diameter is 0.1～2mm, and after prewetting, super absorbent resin (SAP) volume is tens times to tens times of dry resin volume, and
Water retention property is excellent.In cast-in-place SAP, curing concrete is a kind of using super absorbent resin (SAP) after prewetting as interior maintenance material
The concrete of material.
Described interior conserving material introduces the water yield (remembering with W/C), draws according to Powers Theoretical Calculation:
When W/C≤0.36, (W/C) e=0.18 (W/C)
As W/C ＞ 0.36, (W/C) e=0.42-(W/C).
According to technique scheme, the construction method of above-mentioned a kind of novel steel-concrete combined bridge, it is characterised in that bag
Include following steps:
1) one of following two kinds of modes of girder employing:
1. steel I-beam and FRP plate being connected and form girder, the top flange plate of steel I-beam arranges WELDING STUDS, FRP plate position
In the end face of steel I-beam, FRP plate is fixed with steel I-beam by WELDING STUDS；
2. use T steel beam that WELDING STUDS is set as girder, the top flange steel plate of T steel beam；
2) assembled girder: the lifting of girder whole hole is placed on temporary support, some (such as 3～20 along direction across bridge assembling
Sheet), and { when girder uses steel I-beam and FRP plate, utilize bullet by end connecting plate along the longitudinal entirety that is in turn connected to form of bridge
Property rubber strip seal FRP plate seam；When girder uses T steel beam, after girder assembly, weld the upper limb of adjacent T steel beam
Balsh plate (abbreviation steel plate) longitudinal spliced seam is to form entirety }, constitute porous one；
3) end face of girder arranges perforate ribbed stiffener along direction across bridge, and scribbles epoxy bond layer, perforate ribbed stiffener
On be equally spaced multiple hole, longitudinal reinforcement is through the hole on perforate ribbed stiffener, and transverse steel is along bridge the most equidistantly
It is arranged on longitudinal reinforcement and forms vertically and horizontally bar-mat reinforcement；
4) with the top flange steel plate of FRP plate or T steel beam as template, support in pouring SAP on epoxy bond layer
Protecting concrete and form curing concrete floorings in cast-in-place SAP, WELDING STUDS, vertically and horizontally bar-mat reinforcement are positioned at cast-in-place with perforate ribbed stiffener
In SAP in curing concrete floorings；After maintenance reaches design strength, permanent bearing is installed, removes temporary support, bridge floor of mating formation
System, forms novel steel-concrete combined bridge.
After the lifting of described girder (in cast-in-place SAP, curing concrete floorings are with outer portion) burst whole hole, except pier top bearing
Position, can be not provided with diaphragm between different precast main beam, between each girder by curing concrete floorings in SAP, cut
The steel plate (just for T steel girder) of power nail, perforate ribbed stiffener, vertically and horizontally bar-mat reinforcement and T steel beam realizes common stress.
FRP plate is connected formation girder or with T steel beam as main beam structure by this bridge with steel I-beam, sets according to bridge width
Meter, if arranging dry tablet along direction across bridge, sealed elastic rubber strip 7 or along bridge longitudinal measure T between different girder FRP plate seams
The top flange steel plate splicing seam of shape girder steel；In FRP plate or steel plate top, perforate ribbed stiffener is set along bridge lateral, passes through perforate
Ribbed stiffener arranges longitudinal reinforcement, and along bridge, longitudinally being equally spaced transverse steel forms vertically and horizontally bar-mat reinforcement；With FRP plate or steel
Plate is template, curing concrete floorings 18～30cm in one-piece casting SAP, makes each girder and curing concrete bridge floor in SAP
Plates etc. form entirety, shared load by WELDING STUDS, and wherein girder steel top board and web can arrange vertically and horizontally general ribbed stiffener.
The present invention gives full play to that FRP plate and steel plate be good as template high-strength light, stress performance and feature without dismounting, utilizes simultaneously
Water suction-water storage-the Characteristic of releasing moisture of curing concrete in SAP, makes concrete early-age shrinkage minimize and Binder Materials degree of hydration
Maximize, overcome conventional concrete plate super large ultra-thin time a difficult problem easy to crack, promote super large superthin concrete floorings cracking resistance
Performance, substantially reduces the long-term floor stand construction impact on urban transportation.
Compared with prior art, the present invention has a following remarkable result:
(1) FRP plate, steel plate have been given full play to good as template high-strength light, stress performance and without the feature removed, with
Time provide the super absorbent resin (SAP) after a kind of prewetting as the concrete of interior conserving material, concrete density can be reduced,
Reduce combined bridge deadweight, it is to avoid conventional concrete lacks because of internal moisture in super large superthin concrete floorings maintenance processes
A caused shrinkage cracking difficult problem.
(2) with FRP plate or steel plate as template, curing concrete floorings in cast-in-place SAP, it is achieved many girders shared
Load, material is novel and stress performance is excellent, and speed of application is fast, reduces the pollution to surrounding of the long-term site operation, solves
Floor stand is constructed the urban traffic blocking difficult problem caused.
(3), at except support position, diaphragm can be all not provided with between different girders, it is possible to reduce the operation of combined bridge bottom
Time, reduce the impact of traffic under bridge, bridge structure also can be made more attractive in appearance simultaneously.
(4) bridge of the present invention, Functionality, quality and appealing design, overall performance is high, good endurance.
Accompanying drawing explanation
Fig. 1 is the overall schematic of novel steel-concrete composite bridge of the present invention.
Fig. 2 is the steel I-beam structural representation of novel steel-concrete combined bridge of the present invention.
Fig. 3 is the T steel girder construction schematic diagram of novel steel-concrete combined bridge of the present invention.
Fig. 4 is the end connecting plate schematic diagram of novel steel-concrete combined bridge of the present invention.
Fig. 5 is one of construction schematic diagram of novel steel-concrete combined bridge of the present invention.
Fig. 6 is the two of the construction schematic diagram of novel steel-concrete combined bridge of the present invention.
In figure: the top flange steel plate of 1.FRP plate or T steel beam；Curing concrete floorings in the most cast-in-place SAP；3. I-shaped
Girder steel；4.T shape girder steel；5. WELDING STUDS；6. epoxy bond layer；7. elastic rubber strip；8. deck paving；9. permanent bearing；
10. temporary support；11. end connecting plates；12.FRP perforate ribbed stiffener；13. steel perforate ribbed stiffeners.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention
Content is not limited solely to the following examples.
In the embodiment of the present invention, test uses: cement is P O 42.5 portland cement that Huaxin Cement Factory produces.Fine coal
Ash is Cisse mountain II level flyash.Fine aggregate: test sand uses Dongting Lake lake sand, apparent density 2.65g/cm3, clay content is less than
1.0%, modulus of fineness is 2.8.Breeze uses: E Gang S95 level ground slag.Rubble in coarse aggregate: test rubble is 5-
The limestone gravel of 16mm continuous grading, apparent density is 2.72g/cm3, crush index is 2.7%, and screening removes faller gill shape,
Control elongated particles is within 5%, and clay content is within 0.2% (quality).Water reducer uses west card ViscoCrete3301
Polycarboxylic acid series high efficiency water reducing agent.Toughness reinforcing anticracking material uses high-strength organic polymer fiber (such as: also win the high-strength polypropylene of chemical industry fine
Dimension).Reducing toughener uses Guangdong Fu Te to reduce toughener.Super absorbent resin (SAP) uses sodium polyacrylate superabsorbent water tree
Fat (SAP) is as interior conserving material, particle diameter 20～100 μm.
Embodiment 1
As shown in Fig. 1,2,4～6, a kind of novel steel-concrete combined bridge, including maintenance coagulation in girder, cast-in-place SAP
Soil floorings 2 and WELDING STUDS 5.Described girder is steel I-beam 3 and FRP plate 1 connection formation, the top flange plate of steel I-beam 3
Arranging WELDING STUDS 5, FRP plate 1 is positioned at the end face of steel I-beam 3, and FRP plate 1 is fixed with steel I-beam 3 by WELDING STUDS 5.Girder is along horizontal
Bridge is to assembling some (such as 3～20), and it is overall (along bridge that all girders connect formation along bridge longitudinally through end connecting plate 11
Beam connect longitudinally through end connecting plate bolt anchoring form entirety), constitute porous one (porous one girder a length of biphase
Bridge length between adjacent expansion joint).
The end face (end face of FRP plate 1) of described girder arranges perforate ribbed stiffener along bridge lateral and (uses FRP perforate to put more energy into
Rib 12, the distance between adjacent apertures ribbed stiffener is 1～3m；FRP perforate ribbed stiffener 12 is bonded in by epoxy bond layer 6
In FRP plate 1), and scribble epoxy bond layer 6, FRP perforate ribbed stiffener 12 is equally spaced multiple hole, and (aperture is
10～50mm, the distance between adjacent holes is 100～200mm, and the number of hole determines according to bridge width), longitudinal reinforcement
Hole on perforate ribbed stiffener, transverse steel is longitudinally equally spaced (such as colligation) and is formed vertical on longitudinal reinforcement along bridge
Transverse steel net.
With FRP plate 1 as template, epoxy bond layer 6 pours in curing concrete in SAP forms cast-in-place SAP and support
Protect concrete slab 2, WELDING STUDS 5, vertically and horizontally bar-mat reinforcement and FRP perforate ribbed stiffener 12 and be positioned at cast-in-place SAP curing concrete
(by epoxy bond layer 6, FRP perforate between curing concrete floorings 2 in its FRP plate 1 and cast-in-place SAP in floorings 2
Ribbed stiffener 12 and vertically and horizontally bar-mat reinforcement add strong ties；Shearing is passed through between curing concrete floorings 2 and girder in cast-in-place SAP
Nail 5 connection forms entirety).
Described steel I-beam 3, the distance between adjacent steel I-beam 3 is 1.0～3.0 meters, and (root Ju Bridge Design width is true
Determine girder number).
Described end connecting plate 11 is arranged at support position, and end connecting plate arranges local longitudinal stiffener and anyhow to cutting
Power is followed closely, and connects along bridge longitudinally through anchor bolt.
The thickness of described epoxy bond layer 6 is 3～5mm.The material of described epoxy bond layer 6 can be asphalt mixtures modified by epoxy resin
Fat.
In described cast-in-place SAP, the thickness of curing concrete floorings 2 is 18～30cm.
Described a kind of novel steel-concrete combined bridge removes at support position, can be not provided with diaphragm between different girders,
Mainly common stress is realized by curing concrete floorings 2 in cast-in-place SAP between each girder.
As in figure 2 it is shown, the WELDING STUDS 5 of the present embodiment is cluster type or even distribution type, WELDING STUDS a diameter of Ф 15mm～Ф
30mm, height is 80mm～350mm, and between single WELDING STUDS, spacing is 100mm～115mm, for cluster type WELDING STUDS, shearing
Nail group's spacing is 300mm～800mm, follows closely group's gap variable along bridge longitudinal shear.
In described SAP, curing concrete is by comprising cement, flyash, breeze, sand, rubble, water, water reducer, toughness reinforcing anti-
Splitting material, reduce the uniform stirring such as toughener and super absorbent resin (SAP) and form, the proportioning of each composition presses kg/m3Score is not
For: cement 380, flyash 140, breeze 160, sand 620, rubble 880, water 170, water reducer 8.5, toughness reinforcing anticracking material uses height
Strong organic polymer fiber, volume is 2, and reduce that toughener volume is cement consumption 0.5%, super absorbent resin (SAP) pushes away
Recommend volume is cement quality 0.2%, under the conditions of wherein this resin material is completely dried, particle diameter is 0.1～2mm, resin after prewetting
Volume is tens times to tens times of dry resin volume, and water retention property is excellent, overcomes common high-strength concrete plate super large
A difficult problem for cracking time ultra-thin.
Wherein with FRP plate 1 as template, give full play to that FRP high-strength light, stress performance be good, good endurance and without tearing open
The feature removed, significantly reduction concrete cast in situs formwork erection-striking time, accelerating construction progress.
The construction method of above-mentioned a kind of novel steel-concrete combined bridge, mainly comprises the steps:
(1) steel I-beam 3 and FRP plate 1 are connected formation girder: by design requirement processing steel I-beam 3 (sections), spelling
Dress pedestal assembly single hole steel I-beam 3, and weld WELDING STUDS 5 at steel I-beam 3 top flange plate；At precast assembly steel I-beam 3
Top flange paving 1～2cm thickness epoxy resin mortar bed course, lifting installation FRP plate 1, FRP plate 1 is connected by WELDING STUDS 5 with steel I-beam 3
Form one, form girder；
(2) assembled girder: the lifting of girder whole hole is placed on temporary support 10, along direction across bridge assembling some (such as 3～
20), make girder be accurately positioned by three-way jack, by girder bottom by end connecting plate 11 bolt anchoring successively longitudinal phase
Even；The seam sealed between the FRP plate 1 of different precast main beam (utilizes elastic rubber strip 7 to seal the seam of FRP plate, such as Fig. 2
Shown in), constitute porous one；At pier top support position, diaphragm can be not provided with between adjacent girder, mainly pass through SAP
Interior curing concrete floorings 2 realize common stress；
Wherein steel I-beam 3 section form is variable, i.e. steel I-beam form, quantity requires variable according to specific design, work
Word steel beam web plate, base plate all can arrange vertically and horizontally ribbed stiffener.
(3) at girder end face, FRP perforate ribbed stiffener 12 (bonding FRP perforate ribbed stiffener) is set along bridge lateral, and
The end face of girder scribbles epoxy bond layer 6 (being coated with 3～5mm thick), and FRP perforate ribbed stiffener 12 is equally spaced multiple hole
Hole, longitudinal reinforcement is longitudinally equally spaced shape on longitudinal reinforcement through the hole on perforate ribbed stiffener, transverse steel along bridge
Become vertically and horizontally bar-mat reinforcement；
4) with FRP plate 1 as template, in pouring SAP on epoxy bond layer, curing concrete is formed in cast-in-place SAP
Curing concrete floorings 2, thickness is 18～30cm；WELDING STUDS 5, vertically and horizontally bar-mat reinforcement and perforate ribbed stiffener 12 are positioned at cast-in-place
In SAP in curing concrete floorings 2；According to curing concrete floorings 2 in the concrete curing cast-in-place SAP of code maintenance, treat
After reaching design strength, installing permanent bearing 9, remove temporary support 10, it is achieved bridge system transform, bridge deck 8 is installed, full-bridge
Through.
Embodiment 2
As shown in Fig. 1,3,4～6, a kind of novel steel-concrete combined bridge, including maintenance coagulation in girder, cast-in-place SAP
Soil floorings 2 and WELDING STUDS 5.Described girder is T steel beam 4, and the top flange steel plate of T steel beam 4 arranges WELDING STUDS 5.With in advance
The T steel beam 4 of system is main beam structure, and integral hoisting is placed on temporary support 10, along direction across bridge assembling some (such as 3～
20), and be longitudinally sequentially connected along bridge by end connecting plate 11, the top flange steel plate (steel plate) of welding T steel beam 4 longitudinally connects
Seam, makes precast main beam form entirety, constitutes the porous one (bridge between a length of two adjacent expansion joints of porous one girder
Length), as shown in Figure 3.Wherein T steel beam 4 section form is variable, i.e. T steel beam form, quantity according to specific design require can
Becoming, T steel web, top board all can arrange vertically and horizontally ribbed stiffener.
The end face (end face of T steel beam top flange steel plate) of described girder arranges perforate ribbed stiffener along bridge lateral and (uses
Steel perforate ribbed stiffener 13, steel perforate ribbed stiffener 13 along bridge lateral arranged, the distance between adjacent apertures ribbed stiffener be 1～
3m；Steel perforate ribbed stiffener 13 is welded on the steel plate top, top flange of T steel beam), and the end face of described girder scribbles asphalt mixtures modified by epoxy resin
Fat tack coat 6, thickness 3～5mm, perforate ribbed stiffener is equally spaced multiple hole (aperture is 10～50mm, adjacent holes it
Between distance be 100～200mm, the number of hole determines according to bridge width), longitudinal reinforcement is through the hole on perforate ribbed stiffener
Hole, along bridge, longitudinally be equally spaced (such as colligation) forms vertically and horizontally bar-mat reinforcement on longitudinal reinforcement to transverse steel.
With the top flange steel plate of T steel beam 4 as template, epoxy bond layer 6 pours curing concrete shape in SAP
Become curing concrete floorings 2 in cast-in-place SAP, make multi-disc girder and curing concrete floorings 2 shared lotus in cast-in-place SAP
Carry.WELDING STUDS 5, vertically and horizontally bar-mat reinforcement and steel perforate ribbed stiffener 13 are positioned at cast-in-place SAP curing concrete floorings 2 (its T-shaped
Added by epoxy bond layer 6, steel perforate between curing concrete floorings 2 in the top flange steel plate of girder steel 4 and cast-in-place SAP
Strength rib 13 and vertically and horizontally bar-mat reinforcement add strong ties；WELDING STUDS is passed through between curing concrete floorings 2 and girder in cast-in-place SAP
5 connect).
The WELDING STUDS 5 of the present embodiment is cluster type or even distribution type, WELDING STUDS a diameter of Ф 15mm～Ф 30mm, and height is
80mm～350mm, between single WELDING STUDS, spacing is 100mm～115mm, and for cluster type WELDING STUDS, WELDING STUDS group's spacing is
300mm～800mm (along bridge longitudinally, WELDING STUDS group's gap variable).
In described SAP, curing concrete is by comprising cement, flyash, breeze, sand, rubble, water, water reducer, toughness reinforcing anti-
Splitting material, reduce the uniform stirring such as toughener and super absorbent resin (SAP) and form, the proportioning of each composition presses kg/m3Score is not
For: cement 550, flyash 80, breeze 50, sand 570, rubble 920, water 160, water reducer 8, the employing of toughness reinforcing anticracking material is high-strength to be had
Machine polymer fiber, volume is 4, reduce that toughener volume is cement consumption 1.5%, and super absorbent resin (SAP) is recommended to mix
Amount is the 0.4% of cement quality, and stirring after weighing in proportion is prepared from.
The construction method of a kind of novel steel-concrete combined bridge in above-described embodiment, substantially the same manner as Example 1,
Difference is: 1) use T steel beam to arrange WELDING STUDS as girder, the top flange steel plate of T steel beam；2) maintenance in SAP
Concrete mix is described above.
This novel compositions bridge can promote overall bridge mechanics performance, significantly saves the duration simultaneously, reduces environmental pollution
And the site operation impact on urban transportation for a long time, it is achieved bridge greenery construction.
Each raw material cited by the present invention, and the bound of each raw material of the present invention, interval value can realize the present invention,
Embodiment numerous to list herein.
Claims (10)
1. a novel steel-concrete combined bridge, it is characterised in that include curing concrete floorings in girder, cast-in-place SAP
And WELDING STUDS；Cluster type or even distribution type WELDING STUDS are set on described girder；Girder is some along direction across bridge assembling, all girders
Connect formation entirety along bridge longitudinally through end connecting plate, constitute porous one；
The end face of described girder arranges perforate ribbed stiffener along bridge lateral, and scribbles epoxy bond layer, perforate ribbed stiffener
The multiple hole of upper layout, longitudinal reinforcement is through the hole on perforate ribbed stiffener, and transverse steel is longitudinally arranged at longitudinal steel along bridge
Vertically and horizontally bar-mat reinforcement is formed on muscle；In pouring SAP on epoxy bond layer, curing concrete forms maintenance coagulation in cast-in-place SAP
Soil floorings, WELDING STUDS, vertically and horizontally bar-mat reinforcement and perforate ribbed stiffener are positioned at cast-in-place SAP curing concrete floorings；
Described girder is steel I-beam and FRP plate connection formation, and the top flange plate of steel I-beam arranges WELDING STUDS, FRP plate position
In the end face of steel I-beam, FRP plate is fixed with steel I-beam by WELDING STUDS；Or, described girder is T steel beam, T steel
The top flange steel plate of beam arranges WELDING STUDS.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: described along direction across bridge spelling
Shelving and set some girders, the distance between adjacent girder is 1.0～3.0 meters.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: end connecting plate is arranged on
At support position, end connecting plate arranges local longitudinal stiffener and anyhow to WELDING STUDS, along bridge longitudinally through anchor bolt
Connect.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: described epoxy resin glues
The thickness of knot layer is 3～5mm.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: support in described cast-in-place SAP
The thickness protecting concrete slab is 18～30cm.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: described perforate ribbed stiffener
For FRP perforate ribbed stiffener or steel perforate ribbed stiffener, version can be I-shaped, Contraband shape or U-shaped；FRP perforate ribbed stiffener leads to
Cross epoxy bond layer to be bonded in FRP plate；Steel perforate ribbed stiffener is pre-welded on the top flange steel plate of T steel beam, main
After beam assembly, weld horizontally-spliced slit integral.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: WELDING STUDS can use all
Cloth or cluster type；A diameter of Ф 15mm of WELDING STUDS～Ф 30mm, height be 80mm～350mm, adjacent WELDING STUDS it
Between spacing be 100mm～115mm；WELDING STUDS group's spacing is 300mm～800mm.
A kind of novel steel-concrete combined bridge the most according to claim 1, it is characterised in that: maintenance in described SAP
Concrete by cement, flyash, breeze, sand, rubble, water, water reducer, toughness reinforcing anticracking material, reduce toughener and high-hydroscopicity
Resin agitating forms, and the proportioning of each composition presses kg/m3Meter is respectively as follows: cement 380～550, flyash 80～140, breeze 50～
160, sand 570～620, rubble 880～920, water 160～170, water reducer 8～8.5, toughness reinforcing anticracking material 2～4, reduces toughness reinforcing
Agent volume is the 0.5%～1.5% of cement consumption, and super absorbent resin volume is the 0.2%～0.4% of cement quality.
The construction method of a kind of novel steel-concrete combined bridge the most as claimed in claim 1, it is characterised in that include walking as follows
Rapid:
1) one of following two kinds of modes of girder employing:
1. steel I-beam and FRP plate being connected and form girder, the top flange plate of steel I-beam arranges WELDING STUDS, and FRP plate is positioned at work
The end face of word girder steel, FRP plate is fixed with steel I-beam by WELDING STUDS；
2. use T steel beam that WELDING STUDS is set as girder, the top flange steel plate of T steel beam；
2) assembled girder: the lifting of girder whole hole is placed on temporary support, some along direction across bridge assembling, and is connected by end
Plate is longitudinally in turn connected to form entirety along bridge, constitutes porous one；At pier top support position, can not between adjacent girder
Diaphragm is set, mainly realizes common stress by curing concrete floorings in SAP；
3) end face of girder arranges perforate ribbed stiffener along direction across bridge, and scribbles epoxy bond layer, cloth on perforate ribbed stiffener
Putting multiple hole, longitudinal reinforcement is through the hole on perforate ribbed stiffener, and transverse steel is longitudinally arranged on longitudinal reinforcement along bridge
Form vertically and horizontally bar-mat reinforcement；
4) with the top flange steel plate of FRP plate or T steel beam as template, epoxy bond layer pours maintenance coagulation in SAP
Soil forms curing concrete floorings in cast-in-place SAP, and WELDING STUDS, vertically and horizontally bar-mat reinforcement and perforate ribbed stiffener are positioned at cast-in-place SAP
In curing concrete floorings；After maintenance reaches design strength, permanent bearing is installed, removes temporary support, bridge deck of mating formation, shape
Become novel steel-concrete combined bridge.
The construction method of a kind of novel steel-concrete combined bridge, it is characterised in that step 2)
In: when girder uses steel I-beam and FRP plate, utilize elastic rubber strip to seal the seam of FRP plate；Girder uses T steel beam
Time, after girder assembly, weld the longitudinal spliced seam of top flange steel plate of adjacent T steel beam, form entirety.
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