CN106284044B - A kind of novel steel-concrete combined bridge and its construction method - Google Patents
A kind of novel steel-concrete combined bridge and its construction method Download PDFInfo
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- CN106284044B CN106284044B CN201610761354.7A CN201610761354A CN106284044B CN 106284044 B CN106284044 B CN 106284044B CN 201610761354 A CN201610761354 A CN 201610761354A CN 106284044 B CN106284044 B CN 106284044B
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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 its construction methods.A kind of Novel steel concrete composite bridge, it is characterised in that including curing concrete floorings and WELDING STUDS in girder, cast-in-place SAP；Cluster type or even distribution type WELDING STUDS are set on the girder；Girder is several along direction across bridge assembling, and all girders connect to form entirety along bridge longitudinally through end connecting plate, form porous one；The girder top surface sets trepanning ribbed stiffener and is coated with epoxy resin adhesive layer；It pours in SAP and conserves on epoxy resin adhesive layer；Concrete forms curing concrete floorings in cast-in-place SAP, and WELDING STUDS, vertically and horizontally bar-mat reinforcement and trepanning ribbed stiffener are located in cast-in-place SAP in curing concrete floorings.Using the top flange steel plate of FRP plate or T steel beam as template, high-strength light, stress performance are good and without removing；Curing concrete shrinkage and creep effect is small in SAP, problem easy to crack when avoiding conventional concrete floorings super large ultra-thin；Substantially reduce the influence that floor stand is constructed to urban transportation.
Description
Technical field
The present invention relates to a kind of Composite Steel-Concrete Bridges and its construction methods.
Background technology
At present, with the continuous aggravation of the city over-saturation volume of traffic, urban viaduct is grown rapidly, overpass conduct
Important link in stereo urban traffic can significantly alleviate traffic pressure, save city space, promote people's lives quality,
Push rapid urban.Traditional cities overpass is based on (prestressing force) reinforced beam, from great, long construction period,
Cast in situs necessarily brings serious traffic congestion problem；In recent years, steel bridge starts gradually to develop, and from heavy and light, construction is convenient, but
It is Steel Bridge Deck Pavement passage, gathers around the diseases such as packet and be difficult to overcome, construction cost is high, seriously hinders its development and application, and steel-mixed
The characteristics of solidifying soil combined bridge has given full play to steel tensile strength height and good concrete anti-compression performance, has significant technology warp
Ji comprehensive advantage.In recent years, the urban transportations such as overpass infrastructure construction development is swift and violent, limited with working space,
The distinguishing features such as the duration is urgent, and the lower part magnitude of traffic flow is big, concrete slab is easy to crack, therefore how to be carried based on material with structure
It is the important problem faced at present to go out to be suitable for the novel bridge that urban viaduct is safely and fast constructed.
FRP (Fiber Reinforced Polymer/Plastic, i.e. fibre reinforced composites, abbreviation FRP) be by
The novel high-performance material that fibrous material and basis material are mixed and formed by process combinings such as pultrusion, hand pastes according to a certain percentage
Material, in recent years, FRP with its high-strength, lightweight, it is corrosion-resistant, have good workability the advantages that start to be applied in civil engineering, and
Gradually by engineering circles extensive concern.
((Super Absorbent Polymer, i.e. super absorbent resin, abbreviation SAP) interior curing concrete is a kind of by SAP
Using super absorbent resin after prewetting (SAP) as the concrete of interior conserving material, the several functions that can prewet in maintenance processes examination
Agent so as to reach different maintenance effects, avoids the concrete caused by internal moisture lacks in conventional concrete maintenance processes
Problems of crack.
Therefore, based on above-mentioned FRP material with the characteristics of curing concrete, face is built for current urban viaduct in SAP
The problem faced, for the present invention with the top flange steel plate (hereinafter referred to as steel plate) of FRP plate or T steel beam for template, one-piece casting is existing
Curing concrete floorings in SAP are poured, form combined bridge overall structure, it is mixed not only to have given full play to maintenance in steel-FRP-SAP
Coagulate the material advantage of soil, avoid super large superthin concrete floorings shrinkage cracking and its caused by steel bar corrosion, master in floorings
The problems such as beam is seeped water with steel girder corrosion, and combined bridge overall mechanical properties are obviously improved, bridge is reduced to construction operation
Space and the demand of mechanical equipment reduce the cast-in-place formwork erection of concrete slab-form removal process, save the construction period, are greatly reduced
Site operation to the pollution of environment and its caused by urban traffic blocking, while also overcome Steel Bridge Deck Pavement rapid wear problem.
Invention content
The object of the present invention is to provide a kind of novel steel-concrete combined bridge and its construction methods, and it is whole to promote bridge
Stress performance solves urban traffic blocking problem caused by the long-term floor stand construction of urban viaduct.
To achieve the above object, the technical solution adopted in the present invention is：A kind of novel steel-concrete combined bridge,
It is characterized in that including girder, curing concrete floorings and WELDING STUDS in cast-in-place SAP；Cluster type or equal is set on the girder
Cloth WELDING STUDS；Girder is several (such as 3~20) along direction across bridge assembling, and all girders are along bridge longitudinally through end connecting plate
Connection forms whole (forming entirety longitudinally through end connection crab bolt anchor connection along bridge), forms porous one (porous one
Join bridge length of the length of girder between two adjacent expansion joints)；
The top surface of the girder along direction across bridge setting trepanning ribbed stiffener (the distance between adjacent apertures ribbed stiffener for 1~
3m), and the top surface of the girder is coated with epoxy resin adhesive layer, and multiple hole (apertures are equally spaced on trepanning ribbed stiffener
For 10~50mm, the distance between adjacent holes are 100~200mm, and the number of hole is determined according to bridge width), longitudinal steel
Muscle passes through the hole on trepanning ribbed stiffener, and transverse steel is longitudinally equally spaced along bridge to be formed (as bound) on longitudinal reinforcement
Vertically and horizontally bar-mat reinforcement；Curing concrete in SAP is poured on epoxy resin adhesive layer and forms curing concrete bridge floor in cast-in-place SAP
Plate, vertically and horizontally WELDING STUDS, bar-mat reinforcement and trepanning ribbed stiffener be located in cast-in-place SAP in curing concrete floorings (its FRP plate or
It is put more energy between curing concrete floorings by epoxy resin adhesive layer, trepanning in the top flange steel plate and cast-in-place SAP of T steel beam
Rib and vertically and horizontally bar-mat reinforcement strengthen connection；Connected between curing concrete floorings and girder by WELDING STUDS in cast-in-place SAP
It connects)；
The girder connects to be formed with FRP plate for steel I-beam, the top flange plate setting WELDING STUDS of steel I-beam, FRP
Plate is located at the top surface of steel I-beam, and FRP plate is fixed by WELDING STUDS and steel I-beam；Alternatively, the girder is T steel beam, T shapes
The top flange steel plate setting WELDING STUDS of girder steel.
According to above-mentioned technical proposal, the girder several 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 above-mentioned technical proposal, end connecting plate is arranged at support position, the local longitudinal stiffener of end connecting plate arrangement
And it is connected anyhow to WELDING STUDS along bridge longitudinally through anchor bolt.
According to above-mentioned technical proposal, the thickness of the epoxy resin adhesive layer is 3~5mm；The epoxy resin adhesive layer 6
Material can be epoxy resin.
According to above-mentioned technical proposal, the thickness of curing concrete floorings is 18~30cm in the cast-in-place SAP.
According to above-mentioned technical proposal, the trepanning ribbed stiffener be FRP trepannings ribbed stiffener or steel trepanning ribbed stiffener, structure type
Can be I-shaped, Contraband shape or U-shaped；FRP trepannings ribbed stiffener is bonded in by epoxy resin adhesive layer in FRP plate；Steel trepanning adds
Strength rib is pre-welded to the top flange steel plate of T steel beam, and after girder assembly, it is integral to weld horizontally-spliced slit.
According to above-mentioned technical proposal, even distribution type or cluster type can be used in WELDING STUDS；A diameter of Ф 15mm of WELDING STUDS~
Ф 30mm are highly 80mm~350mm, and spacing is 100mm~115mm between adjacent WELDING STUDS；WELDING STUDS group's spacing is
300mm~800mm (along bridge longitudinal direction, WELDING STUDS group's spacing is variable).
According to above-mentioned technical proposal, in the SAP curing concrete by cement, flyash, miberal powder, sand, rubble, water,
Water-reducing agent, toughening anticracking material, decrement toughener and super absorbent resin (SAP) stir, and the proportioning of each ingredient presses kg/m3
Meter is respectively：Cement 380~550, flyash 80~140, miberal powder 50~160, sand 570~620, rubble 880~920, water 160
~170, water-reducing agent 8~8.5, toughening anticracking material 2~4, decrement toughener volume is the 0.5%~1.5% of cement consumption, 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 grain size is 0.1~2mm, and super absorbent resin (SAP) volume is more than ten times to tens times of dry resin volume after prewetting, and
Water retention property is excellent.Curing concrete is one kind using super absorbent resin after prewetting (SAP) as interior maintenance material in cast-in-place SAP
The concrete of material.
The interior conserving material introduces water (remembering with W/C), is obtained according to Powers theoretical calculations：
As 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 above-mentioned technical proposal, a kind of above-mentioned construction method of novel steel-concrete combined bridge, it is characterised in that packet
Include following steps：
1) girder is using one of following two kinds of modes：
1. steel I-beam is connected to form girder with FRP plate, the top flange plate setting WELDING STUDS of steel I-beam, FRP plate position
In the top surface of steel I-beam, FRP plate is fixed by WELDING STUDS and steel I-beam；
2. using T steel beam as girder, the top flange steel plate setting WELDING STUDS of T steel beam；
2) assembled girder：The whole hole lifting of girder is placed on temporary support, along direction across bridge assembling several (such as 3~20
Piece), and pass through hold connecting plate be longitudinally in turn connected to form along bridge entirety girder use steel I-beam and FRP plate when, utilize bullet
Property rubber strip sealing FRP plate seam；When girder uses T steel beam, after girder assembly, the upper limb of adjacent T steel beam is welded
Balsh plate (abbreviation steel plate) is longitudinal spliced to be stitched to form entirety }, form porous one；
3) top surface of girder sets trepanning ribbed stiffener along direction across bridge, and is coated with epoxy resin adhesive layer, trepanning ribbed stiffener
On be equally spaced multiple holes, longitudinal reinforcement passes through the hole on trepanning ribbed stiffener, and transverse steel is longitudinally equidistant along bridge
It is arranged on longitudinal reinforcement and forms vertically and horizontally bar-mat reinforcement；
4) it using the top flange steel plate of FRP plate or T steel beam as template, pours in SAP and supports on epoxy resin adhesive layer
Shield concrete forms curing concrete floorings in cast-in-place SAP, and WELDING STUDS, vertically and horizontally bar-mat reinforcement and trepanning ribbed stiffener are located at cast-in-place
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 whole hole lifting of girder (curing concrete floorings are with outer portion in cast-in-place SAP) fragment, except pier top bearing
At position, diaphragm can be not provided between different precast main beams, passes through curing concrete bridge floor in cast-in-place SAP between each girder
Plate, WELDING STUDS, trepanning ribbed stiffener, vertically and horizontally the steel plate of bar-mat reinforcement and T steel beam (just for T steel girder) realize jointly by
Power.
FRP plate is connect to form girder or using T steel beam as main beam structure with steel I-beam by the bridge, is set according to bridge is wide
Meter, if arranging dry plate 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；Trepanning ribbed stiffener is set along bridge lateral at the top of FRP plate or steel plate, passes through trepanning
Ribbed stiffener arranges longitudinal reinforcement, and transverse steel is longitudinally equally spaced along bridge and forms vertically and horizontally bar-mat reinforcement；With FRP plate or steel
Plate is template, curing concrete 18~30cm of floorings in the cast-in-place SAP of one-piece casting, makes each girder and maintenance in cast-in-place SAP mixed
Solidifying soil floorings etc. form entirety by WELDING STUDS, and shared load, wherein girder steel top plate and web can set vertically and horizontally one
As ribbed stiffener.The present invention give full play to FRP plate and steel plate as template high-strength light, stress performance it is good and need not dismounting spy
Point, while using water suction-water storage-Characteristic of releasing moisture of curing concrete in SAP, make concrete early-age shrinkage minimum and gelling material
Expect that degree of hydration maximizes, overcome conventional concrete plate super large it is ultra-thin when problem easy to crack, promote super large superthin concrete
Floorings cracking resistance substantially reduces the influence that long-term floor stand is constructed to urban transportation.
Compared with prior art, the present invention has following remarkable result：
(1) given full play to FRP plate, steel plate as template high-strength light, stress performance it is good and the characteristics of need not remove, together
When provide a kind of concrete of the super absorbent resin (SAP) after prewet as interior conserving material, concrete density can be reduced,
Combined bridge dead weight is reduced, avoids conventional concrete in super large superthin concrete floorings maintenance processes because internal moisture lacks
Caused shrinkage cracking problem.
(2) using FRP plate or steel plate as template, curing concrete floorings in cast-in-place SAP realize more girder shareds
Load, material is novel and stress performance is excellent, and speed of application is fast, reduces pollution of the long-term site operation to ambient enviroment, solves
Urban traffic blocking problem caused by floor stand construction.
(3) at except support position, diaphragm can be not provided between different girders, the operation of combined bridge lower part can be reduced
Time reduces the influence to traffic under bridge, while can also make bridge structure more beautiful.
(4) bridge of the invention, quality, overall performance is high, and durability is good.
Description of the drawings
Fig. 1 is the overall schematic of novel steel-concrete composite bridge of the present invention.
Fig. 2 is the steel I-beam structure diagram 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：1.FRP plates；2. curing concrete floorings in cast-in-place SAP；3. steel I-beam；4.T shape girder steels；5. shearing
Nail；6. epoxy resin adhesive layer；7. elastic rubber strip；8. deck paving；9. permanent bearing；10. temporary support；11. end connects
Plate；12.FRP trepanning ribbed stiffeners；13. steel trepanning ribbed stiffener；The top flange steel plate of 14.T shape girder steels.
Specific embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
It tests and uses in the embodiment of the present invention：Cement is 42.5 portland cements of PO of Huaxin Cement Factory's production.Fine coal
Ash is II grades of Cisse mountain flyash.Fine aggregate：Experiment is with sand using Dongting Lake lake sand, apparent density 2.65g/cm3, clay content is less than
1.0%, fineness modulus 2.8.Miberal powder uses：Steel S95 grades of Hubei Province ground slag.Rubble in coarse aggregate：Experiment is 5- with rubble
The limestone gravel of 16mm continuous gradings, apparent density 2.72g/cm3, crush index 2.7%, screening removing gill shape,
Controlling elongated particles, clay content is within 0.2% (quality) within 5%.Water-reducing agent is using west card ViscoCrete3301
Polycarboxylic acid series high efficiency water reducing agent.Toughening anticracking material uses high-strength organic polymer fiber (such as：Also it is fine to win the high-strength polypropylene of chemical industry
Dimension).Reduce toughener and toughener is reduced using Guangdong Fu Te.Super absorbent resin (SAP) is using Sodium Polyacrylate superabsorbent water tree
Fat (SAP) is used as interior conserving material, 20~100 μm of grain size.
Embodiment 1
As shown in Fig. 1,2,4~6, a kind of novel steel-concrete combined bridge, including conserving coagulation in girder, cast-in-place SAP
Native floorings 2 and WELDING STUDS 5.The girder is formed for steel I-beam 3 and the connection of FRP plate 1, the top flange plate of steel I-beam 3
WELDING STUDS 5 is set, and FRP plate 1 is located at the top surface of steel I-beam 3, and FRP plate 1 is fixed by WELDING STUDS 5 and steel I-beam 3.Girder edge is horizontal
Bridge is several (such as 3~20) to assembling, and all girders form whole (along bridge along bridge longitudinally through the end connection of connecting plate 11
Beam forms entirety longitudinally through end connection crab bolt anchor connection), forming porous one, (length of a porous girder is two-phase
Bridge length between adjacent expansion joint).
It (is put more energy into along bridge lateral setting trepanning ribbed stiffener using FRP trepannings the top surface (top surface of FRP plate 1) of the girder
The distance between rib 12, adjacent apertures ribbed stiffener is 1~3m；FRP trepannings ribbed stiffener 12 is bonded in by epoxy resin adhesive layer 6
In FRP plate 1), and epoxy resin adhesive layer 6 is coated with, being equally spaced multiple holes on FRP trepannings ribbed stiffener 12, (aperture is
The distance between 10~50mm, adjacent holes is 100~200mm, and the number of hole is determined according to bridge width), longitudinal reinforcement
Hole across on trepanning ribbed stiffener, transverse steel are longitudinally equally spaced to be formed on longitudinal reinforcement (as bound) along bridge and indulge
Transverse steel net.
Be template with FRP plate 1, poured on epoxy resin adhesive layer 6 curing concrete in SAP formed in cast-in-place SAP support
Concrete slab 2 is protected, WELDING STUDS 5, vertically and horizontally bar-mat reinforcement and FRP trepannings ribbed stiffener 12 are located at curing concrete in cast-in-place SAP
(pass through epoxy resin adhesive layer 6, FRP trepannings 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 strengthen connection；Pass through shearing in cast-in-place SAP between curing concrete floorings 2 and girder
5 connection of nail forms whole).
The distance between the steel I-beam 3, adjacent steel I-beam 3 is 1.0~3.0 meters, and (root Ju Bridge Design width is true
Determine girder number).
The end connecting plate 11 is arranged at support position, the local longitudinal stiffener of end connecting plate arrangement and anyhow to cutting
Power is followed closely, and is connected along bridge longitudinally through anchor bolt.
The thickness of the epoxy resin adhesive layer 6 is 3~5mm.The material of the epoxy resin adhesive layer 6 can be asphalt mixtures modified by epoxy resin
Fat.
The thickness of curing concrete floorings 2 is 18~30cm in the cast-in-place SAP.
A kind of novel steel-concrete combined bridge is removed at support position, and diaphragm can be not provided between different girders,
Between each girder mainly common stress is realized by curing concrete floorings 2 in cast-in-place SAP.
As shown in Fig. 2, the WELDING STUDS 5 of the present embodiment is cluster type or even distribution type, a diameter of Ф 15mm~Ф of WELDING STUDS
30mm is highly 80mm~350mm, and spacing is 100mm~115mm between single WELDING STUDS, for cluster type WELDING STUDS, shearing
It is 300mm~800mm to follow closely group's spacing, variable along bridge longitudinal shear nail group's spacing.
Curing concrete comprising cement, flyash, miberal powder, sand, rubble, water, water-reducing agent, toughening by resisting in the SAP
Split material, the decrement uniform stirrings such as toughener and super absorbent resin (SAP) form, the proportioning of each ingredient presses kg/m3Meter difference
For：Cement 380, flyash 140, miberal powder 160, sand 620, rubble 880, water 170, water-reducing agent 8.5, toughening anticracking material is using high
Strong organic polymer fiber, volume 2, decrement toughener volume is the 0.5% of cement consumption, and super absorbent resin (SAP) pushes away
Recommend volume be cement quality 0.2%, wherein the resin material be completely dried under the conditions of grain size be 0.1~2mm, resin after prewetting
Volume is more than ten times to tens times of dry resin volume, and water retention property is excellent, overcomes common high-strength concrete plate super large
The problem to crack when ultra-thin.
It is template wherein with FRP plate 1, has given full play to that FRP high-strength lights, stress performance are good, durability is good and need not tear open
Except the characteristics of, substantially reduce concrete cast in situs formwork erection-striking time, accelerate construction progress.
A kind of construction method of above-mentioned novel steel-concrete combined bridge, mainly includes the following steps：
(1) steel I-beam 3 and the connection of FRP plate 1 are formed into girder：By design requirement processing steel I-beam 3 (segment), spelling
Pedestal assembly single hole steel I-beam 3 is filled, and WELDING STUDS 5 is welded in 3 top flange plate of steel I-beam；In precast assembly steel I-beam 3
Top flange spreads 1~2cm thickness epoxy resin mortar bed courses, lifting installation FRP plate 1, and FRP plate 1 is connect with steel I-beam 3 by WELDING STUDS 5
One is formed, forms girder；
(2) assembled girder：The lifting of girder whole hole is placed on temporary support 10, along direction across bridge assembling it is several (such as 3~
20), it is accurately positioned girder by three-way jack, by girder lower part by holding 11 bolt of connecting plate anchoring longitudinal phase successively
Even；The seam sealed between the FRP plate 1 of different precast main beams (seals the seam of FRP plate, such as Fig. 2 using elastic rubber strip 7
It is shown), form porous one；At pier top support position, diaphragm can be not provided between adjacent girder, mainly by cast-in-place
Curing concrete floorings 2 realize common stress in SAP；
Wherein 3 section form of steel I-beam is variable, i.e., steel I-beam form, quantity are variable according to specific design requirement, work
Word steel beam web plate, bottom plate can set vertically and horizontally ribbed stiffener.
(3) in girder top surface along bridge lateral setting FRP trepannings ribbed stiffener 12 (bonding FRP trepannings ribbed stiffener), and
The top surface of girder is coated with epoxy resin adhesive layer 6 (it is thick to apply 3~5mm), and multiple holes are equally spaced on FRP trepannings ribbed stiffener 12
Hole, longitudinal reinforcement pass through the hole on trepanning ribbed stiffener, and transverse steel is longitudinally equally spaced the shape on longitudinal reinforcement along bridge
Into vertically and horizontally bar-mat reinforcement；
4) it is template with FRP plate 1, pouring curing concrete in SAP on epoxy resin adhesive layer forms in cast-in-place SAP
Curing concrete floorings 2, thickness are 18~30cm；WELDING STUDS 5, vertically and horizontally bar-mat reinforcement and FRP trepannings ribbed stiffener 12 are located at existing
It pours in SAP in curing concrete floorings 2；Curing concrete floorings 2 in cast-in-place SAP are conserved according to concrete curing regulation,
After design strength to be achieved, permanent bearing 9 is installed, removes temporary support 10, realizes bridge system transform, bridge deck 8 is installed, entirely
Bridge penetrates through.
Embodiment 2
As shown in Fig. 1,3,4~6, a kind of novel steel-concrete combined bridge, including conserving coagulation in girder, cast-in-place SAP
Native floorings 2 and WELDING STUDS 5.The girder is T steel beam 4, and the top flange steel plate 14 of T steel beam sets WELDING STUDS 5.With pre-
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 it is several (such as 3~
20), and pass through and connecting plate 11 is held longitudinally to be sequentially connected along bridge, weld top flange steel plate 14 (steel plate) longitudinal direction of T steel beam
Seam makes precast main beam form entirety, forms a porous (bridge of the length of a porous girder between two adjacent expansion joints
Beam length), as shown in Figure 3.Wherein 4 section form of T steel beam is variable, i.e., T steel beam form, quantity are according to specific design requirement
Variable, T steel beam web, top plate can set vertically and horizontally ribbed stiffener.
The top surface (top surface of T steel beam top flange steel plate) of the girder (is used along bridge lateral setting trepanning ribbed stiffener
Steel trepanning ribbed stiffener 13, steel trepanning ribbed stiffener 13 along the distance between bridge lateral arranged, adjacent apertures ribbed stiffener for 1~
3m；Steel trepanning ribbed stiffener 13 is welded at the top of the top flange steel plate of T steel beam), and the top surface of the girder is coated with asphalt mixtures modified by epoxy resin
Fat adhesive layer 6,3~5mm of thickness, be equally spaced on trepanning ribbed stiffener multiple holes (aperture is 10~50mm, adjacent holes it
Between distance for 100~200mm, the number of hole is determined according to bridge width), longitudinal reinforcement passes through the hole on trepanning ribbed stiffener
Hole, transverse steel is longitudinally equally spaced along bridge forms vertically and horizontally bar-mat reinforcement (as bound) on longitudinal reinforcement.
It is template with the top flange steel plate 14 of T steel beam, curing concrete in SAP is poured on epoxy resin adhesive layer 6
Curing concrete floorings 2 in cast-in-place SAP are formed, make multi-disc girder and 2 shared of curing concrete floorings in cast-in-place SAP
Load.WELDING STUDS 5, vertically and horizontally bar-mat reinforcement and steel trepanning ribbed stiffener 13 are located in cast-in-place SAP (its T in curing concrete floorings 2
It is opened between curing concrete floorings 2 by epoxy resin adhesive layer 6, steel in the top flange steel plate 14 and cast-in-place SAP of shape girder steel
Hole ribbed stiffener 13 and vertically and horizontally bar-mat reinforcement strengthen connection；By cutting between curing concrete floorings 2 and girder in cast-in-place SAP
5 connection of power nail).
The WELDING STUDS 5 of the present embodiment is cluster type or even distribution type, and a diameter of Ф 15mm~Ф 30mm of WELDING STUDS are highly
80mm~350mm, spacing is 100mm~115mm between single WELDING STUDS, and for cluster type WELDING STUDS, WELDING STUDS group's spacing is
300mm~800mm (along bridge longitudinal direction, WELDING STUDS group's spacing is variable).
Curing concrete comprising cement, flyash, miberal powder, sand, rubble, water, water-reducing agent, toughening by resisting in the SAP
Split material, the decrement uniform stirrings such as toughener and super absorbent resin (SAP) form, the proportioning of each ingredient presses kg/m3Meter difference
For：Cement 550, flyash 80, miberal powder 50, sand 570, rubble 920, water 160, water-reducing agent 8, toughening anticracking material are had using high-strength
Machine polymer fiber, volume 4, decrement toughener volume are the 1.5% of cement consumption, and super absorbent resin (SAP) recommendation is mixed
0.4% for cement quality is measured, stirs evenly and is prepared after weighing in proportion.
A kind of construction method of novel steel-concrete combined bridge in above-described embodiment, it is substantially the same manner as Example 1,
The difference lies in：1) using T steel beam as girder, the top flange steel plate setting WELDING STUDS of T steel beam；2) it is conserved in SAP
Concrete mix is as described above.
The novel compositions bridge can promote whole bridge mechanics performance, while substantially save the duration, reduce environmental pollution
And long-term influence of the site operation to urban transportation, realize bridge greenery construction.
Bound, the section value of each raw material and each raw material of the present invention cited by the present invention can realize the present invention,
Embodiment numerous to list herein.
Claims (10)
1. a kind of novel steel-concrete combined bridge, it is characterised in that including curing concrete floorings in girder, cast-in-place SAP
And WELDING STUDS；Cluster type or even distribution type WELDING STUDS are set on the girder；Girder is several along direction across bridge assembling, all girders
It connects to form entirety longitudinally through end connecting plate along bridge, forms porous one；
The top surface of the girder sets trepanning ribbed stiffener along bridge lateral, and is coated with epoxy resin adhesive layer, trepanning ribbed stiffener
The upper multiple holes of arrangement, longitudinal reinforcement pass through the hole on trepanning ribbed stiffener, and transverse steel is longitudinally arranged along bridge in longitudinal steel
Vertically and horizontally bar-mat reinforcement is formed on muscle；Curing concrete in SAP is poured on epoxy resin adhesive layer and forms maintenance coagulation in cast-in-place SAP
Native floorings, vertically and horizontally WELDING STUDS, bar-mat reinforcement and trepanning ribbed stiffener are located in cast-in-place SAP in curing concrete floorings；
The girder connects to be formed with FRP plate for steel I-beam, the top flange plate setting WELDING STUDS of steel I-beam, FRP plate position
In the top surface of steel I-beam, FRP plate is fixed by WELDING STUDS and steel I-beam；Alternatively, the girder is T steel beam, T steel
The top flange steel plate setting WELDING STUDS of beam.
2. a kind of novel steel-concrete combined bridge according to claim 1, it is characterised in that：It is described to be spelled along direction across bridge
It is 1.0~3.0 meters to shelve and set the distance between several girder, adjacent girder.
3. a kind of novel steel-concrete combined bridge 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
Connection.
4. a kind of novel steel-concrete combined bridge according to claim 1, it is characterised in that：The epoxy resin glues
The thickness for tying layer is 3~5mm.
5. a kind of novel steel-concrete combined bridge according to claim 1, it is characterised in that：It is supported in the cast-in-place SAP
The thickness for protecting concrete slab is 18~30cm.
6. a kind of novel steel-concrete combined bridge according to claim 1, it is characterised in that：The trepanning ribbed stiffener
For FRP trepannings ribbed stiffener or steel trepanning ribbed stiffener, structure type can be I-shaped, Contraband shape or U-shaped；FRP trepanning ribbed stiffeners lead to
Epoxy resin adhesive layer is crossed to be bonded in FRP plate；Steel trepanning ribbed stiffener is pre-welded on the top flange steel plate of T steel beam, main
After beam assembly, it is integral to weld horizontally-spliced slit.
7. a kind of novel steel-concrete combined bridge according to claim 1, it is characterised in that：WELDING STUDS can be used
Cloth or cluster type；A diameter of Ф 15mm~Ф 30mm of WELDING STUDS, are highly 80mm~350mm, adjacent WELDING STUDS it
Between spacing be 100mm~115mm；WELDING STUDS group spacing is 300mm~800mm.
8. a kind of novel steel-concrete combined bridge according to claim 1, it is characterised in that：It is conserved in the SAP
Concrete is by cement, flyash, miberal powder, sand, rubble, water, water-reducing agent, toughening anticracking material, decrement toughener and high-hydroscopicity
Resin agitating forms, and the proportioning of each ingredient presses kg/m3Meter is respectively：Cement 380~550, flyash 80~140, miberal powder 50~
160, sand 570~620, rubble 880~920, water 160~170, water-reducing agent 8~8.5, toughening anticracking material 2~4, decrement toughening
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.
9. a kind of construction method of novel steel-concrete combined bridge as described in claim 1, it is characterised in that including walking as follows
Suddenly：
1) girder is using one of following two kinds of modes：
1. steel I-beam is connected to form girder with FRP plate, the top flange plate setting WELDING STUDS of steel I-beam, FRP plate is located at work
The top surface of word girder steel, FRP plate are fixed by WELDING STUDS and steel I-beam；
2. using T steel beam as girder, the top flange steel plate setting WELDING STUDS of T steel beam；
2) assembled girder：The whole hole lifting of girder is placed on temporary support, several along direction across bridge assembling, and passes through end connection
Plate is longitudinally in turn connected to form entirety along bridge, forms porous one；It, can not between adjacent girder at pier top support position
Diaphragm is set, mainly realizes common stress by curing concrete floorings in SAP；
3) top surface of girder sets trepanning ribbed stiffener along direction across bridge, and is coated with epoxy resin adhesive layer, cloth on trepanning ribbed stiffener
Multiple holes are put, longitudinal reinforcement passes through the hole on trepanning ribbed stiffener, and transverse steel is longitudinally arranged along bridge on longitudinal reinforcement
Form vertically and horizontally bar-mat reinforcement；
4) it using the top flange steel plate of FRP plate or T steel beam as template, is poured on epoxy resin adhesive layer and coagulation is conserved in SAP
Soil forms curing concrete floorings in cast-in-place SAP, and WELDING STUDS, vertically and horizontally bar-mat reinforcement and trepanning ribbed stiffener are located in 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
Into novel steel-concrete combined bridge.
A kind of 10. construction method of novel steel-concrete combined bridge according to claim 9, it is characterised in that step 2)
In：When girder uses steel I-beam and FRP plate, the seam of elastic rubber strip sealing FRP plate is utilized；Girder uses T steel beam
When, after girder assembly, the longitudinal spliced seam of top flange steel plate of adjacent T steel beam is welded, is formed whole.
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