CN106638254B - A kind of few girder composite beam bridge and its construction method using Prefabricated composite floorings - Google Patents
A kind of few girder composite beam bridge and its construction method using Prefabricated composite floorings Download PDFInfo
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- CN106638254B CN106638254B CN201611261984.4A CN201611261984A CN106638254B CN 106638254 B CN106638254 B CN 106638254B CN 201611261984 A CN201611261984 A CN 201611261984A CN 106638254 B CN106638254 B CN 106638254B
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- 239000002131 composite material Substances 0.000 title claims abstract description 131
- 238000009408 flooring Methods 0.000 title claims abstract description 79
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 242
- 239000010959 steel Substances 0.000 claims abstract description 242
- 239000004567 concrete Substances 0.000 claims abstract description 71
- 244000261422 Lysimachia clethroides Species 0.000 claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 239000003351 stiffener Substances 0.000 claims description 9
- 239000011210 fiber-reinforced concrete Substances 0.000 claims description 7
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000011513 prestressed concrete Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 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
- E01D1/00—Bridges in general
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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 kind of few girder composite beam bridges and its construction method using Prefabricated composite floorings, few girder composite beam bridge includes steel box-girder, gooseneck and polylith Prefabricated composite floorings, interval forms laterally wet seam between contiguous prefabricated combined bridge deck, Prefabricated composite floorings include more shaped steel and pour in the concrete layer on shaped steel, the bottom of shaped steel is welded on steel box-girder, Prefabricated composite floorings in the top extent of steel box-girder in forming longitudinal wet joint, multiple through-holes are offered on shaped steel in the range of longitudinal wet joint, the perforation reinforcing bar of more shaped steel of connection is equipped in through-hole, vertically and horizontally bar-mat reinforcement is provided in concrete layer, vertically and horizontally bar-mat reinforcement stretch out Prefabricated composite floorings prefabricated range and with perforate bar connecting, cast-in-place wet joint concrete in lateral wet seam and longitudinal wet joint.Few girder composite beam bridge is larger from heavy and light, large carrying capacity, reasonable stress, good integrity, adaptation width.
Description
Technical field
The present invention relates to composite bridge technical fields, and in particular to a kind of few girder using Prefabricated composite floorings
Composite beam bridge and its construction method.
Background technology
At present, with the development of science of bridge building and practice, the more and more engineering skills of application about Short/Medium Span Bridge
Art personnel have reached following common recognition：Mid and minor spans concrete beam bridge (such as prestressed T beam, small box girder) construction technology is ripe, makes
Valency is relatively low, but its construction period it is long, from it is great, durability is poor；Truss bridge can greatly shorten the duration, reduce structure
Dead weight, but cost is higher, and the disease of orthogonal abnormity steel bridge deck protrudes；Fast-developing steel plate and concrete composite beam in recent years
Bridge has then given full play to the characteristic of material, not only easy construction, short time limit, and dead weight is low, and cost is relatively low, and is had
Widely applied technical conditions and economic base in Short/Medium Span Bridge.
American-European-Japanese to wait prosperity widely used steel reinforced concrete combination beam of bridge in the range of 25-60m across footpaths, form mainly includes steel
Plate composite beam bridge, separated steel case composite beam bridge and Integral Steel case composite beam bridge.For the wide bridge of Medium Span, bridge
Beam, for steel plate combination beam since it is open section, antitorque and bending stiffness is relatively low, should not use.Integral Steel case composite beam bridge
Overall performance is good, and bending resistance and torsional rigidity are higher, but steel using amount is higher, and economic performance is poor.Separate type composite beam of steel box point
For several small steel box-girders, section bending resistance and torsional rigidity have between steel plate combination beam and monoblock type composite beam of steel box
Preferable mechanical property, if but apply when on the wide larger bridge of bridge, for ensure concrete slab stress have to
Reduce girder direction across bridge spacing, increase steel using amount, so as to limit its application range.Therefore, improve separate type composite beam of steel box
Floorings stress is particularly important.
At present, the common floorings form of combination beam mainly has reinforced concrete bridge deck plate and prestressed concrete bridge face
Plate.Wherein reinforced concrete bridge deck plate is from great, average plate thickness about 28cm, maximum transversal span about 5m, and under load action
Easy cracking damage, influences structure durability.When floorings horizontal span is larger, prestressed concrete bridge face is generally used
Plate, but it needs live tensioning transverse prestress, construction procedure is cumbersome.And the plate thickness of prestressed concrete bridge panel is still thicker,
About 26cm, dead weight are larger.By an across footpath 4x40m, the wide 16.5m of bridge composite beam bridge for, consider 10cm deck paving it
Afterwards, the dead weight of prestressed concrete bridge panel accounts for structure is always conducted oneself with dignity 68%, if can not reduce floorings bearing capacity and
Mitigate floorings dead weight on the basis of rigidity, by the horizontal span of great increase floorings, improve its scope of application.Therefore,
Develop a kind of bearing capacity height, reasonable stress, form it is simple, from the floorings form of heavy and light, it is prefabricated using modularization, apply
It is particularly important on few girder composite beam bridge.
Invention content
The technical problems to be solved by the invention are to overcome the shortcomings of to mention in background above technology and defect, provide one
It plants from heavy and light, large carrying capacity, reasonable stress, good integrity, adapt to the larger few master using Prefabricated composite floorings of width
Beam composite beam bridge and its construction method.
In order to solve the above technical problems, technical solution proposed by the present invention is：
A kind of few girder composite beam bridge using Prefabricated composite floorings, including more along steel box-girder of the bridges to setting, company
It connects the gooseneck of the steel box-girder and polylith is set up in Prefabricated composite floorings on the steel box-girder, adjacent described prefabricated group
Close interval between floorings and form laterally wet seam, the Prefabricated composite floorings include more direction across bridge arrangements shaped steel and
It pours in the concrete layer on the shaped steel, the bottom of the shaped steel is welded on the steel box-girder, the Prefabricated composite
Floorings are in forming longitudinal wet joint in the top extent of the steel box-girder, on the shaped steel in the range of the longitudinal wet joint
Multiple through-holes are offered, the perforation reinforcing bar of the more shaped steel of connection are equipped in the through-hole, in the concrete layer
Vertically and horizontally bar-mat reinforcement is provided with, the vertically and horizontally bar-mat reinforcement stretches out the prefabricated range of the Prefabricated composite floorings and worn with described
Hole bar connecting, cast-in-place wet joint concrete in the wet seam of the transverse direction and longitudinal wet joint.Few girder composite beam bridge is adopted
With above-mentioned Prefabricated composite deck structrue bearing capacity height, reasonable stress, from heavy and light, be applicable to highway and city it is medium across
The bridge of diameter (40-60m), bridge width wider (10-18m), girder radical less (2-3 roots), efficiently solves existing bridge floor
Plate is from the problems such as great, horizontal span is small, easy to crack；Prefabricated using modularization, structure type is simple, short construction period, synthesis
Low cost.
It is further improved as to above-mentioned technical proposal：
Preferably, the concrete layer includes the first concrete layer and the second concrete layer, and described the
One concrete layer is the bridge overall with for removing the steel box-girder width range, and second concrete layer is by steel box-girder
Outside extend 15-25cm inwardly, the height of the second concrete layer is the Prefabricated composite floorings overall height.It will be prefabricated
Concrete layer is divided into two parts, wherein the first concrete layer is arranged on the top of shaped steel, height is less than concrete
Soil layer overall height, and the height of the second concrete layer is equal to Prefabricated composite floorings overall height, setting in this way can be reduced effectively pre-
Combined bridge deck dead weight processed.
It is furthermore preferred that the upper surface of the shaped steel and the first concrete layer joining part is provided with weldering nail connection
Part ensures the compound action of the first concrete layer and shaped steel, participates in stress jointly.Second concrete layer is in institute
It states and wraps up the shaped steel in the range of Prefabricated composite floorings overall height, the second concrete layer is made to participate in stress jointly with shaped steel.
It is furthermore preferred that the thickness of the Prefabricated composite floorings is 26-36cm, the height of the shaped steel is 10-16cm, institute
The thickness of the first concrete layer is stated as 16-20cm, the width of the wet seam of transverse direction is 40-60cm, Prefabricated composite bridge floor
Plate stress, shaped steel tension, concrete layer are pressurized, which has good stressing conditions.It is described wet to connect
Seam concrete is steel fiber reinforced concrete, and the steel fibre formed using the short steel fibre that random distribution is mixed in normal concrete is mixed
Solidifying native, the steel fibre of random distribution can effectively hinder extension and the macroscopic view of inside concrete microcrack in the steel fiber reinforced concrete
The formation in crack significantly improves tension, bending resistance, shock resistance and the anti-fatigue performance of concrete, has good ductility.Using
Steel fiber reinforced concrete, which pours wet seam, can further improve the stressing conditions of few girder composite beam bridge.
Preferably, the quantity of the shaped steel is 4-6 roots, suitable the bridge between the adjacent shaped steel to spacing be 0.8-1.5m,
The concrete numerical value of the spacing calculates analysis according to the specific requirement of bridge and determines.The through-hole is circular hole, and is opened in described
The center of the web of shaped steel, further improves stress.
Preferably, the steel box-girder includes steel box-girder web, the steel box-girder top plate being welded on above the steel box-girder web
And the steel box-girder bottom plate below the steel box-girder web is welded on, the thickness of the steel box-girder bottom plate is more than the steel box-girder top
The thickness of plate, the control of the ratio between the height of the steel box-girder web and the width of the steel box-girder top plate and steel box-girder bottom plate is in 1/3-
1/2.Using separated steel case combined beam structure, with reference to the Prefabricated composite floorings of the present invention, ensure that composite beam bridge have compared with
Good section bending resistance and torsional rigidity have good mechanical property so that larger direction across bridge can be kept between steel box-girder
Spacing reduces steel using amount, alleviates bridge dead weight, and then expand the application range of the composite beam bridge.The steel box-girder top
Top plate weldering nail connector is provided on plate, ensures steel box-girder and the compound action of wet joint concrete, participates in stress jointly.It is described
For top plate weldering nail connector in arranged in rows, there are gaps between the top plate weldering nail connector and shaped steel at the shaped steel, make
It obtains wet joint concrete to be in close contact with shaped steel, filling is closely knit.
It is furthermore preferred that in the steel box-girder top plate, steel box-girder bottom plate and steel box-girder web inside the chamber of the steel box-girder
On be both provided with ribbed stiffener, the ribbed stiffener is rib of slab, T-shaped rib, the flat rib of ball or U ribs, inside the chamber of steel box-girder setting plus
Strength rib improves the stability and torsional property of steel box-girder.
It is furthermore preferred that the chamber of the steel box-girder is internally provided with steel diaphragm in polylith, the interior steel diaphragm and the steel
Box beam Welding, is provided with hole on interior steel diaphragm, the ribbed stiffener longitudinally through setting in the hole, inside the chamber of steel box-girder
Steel diaphragm in setting further improves the stability of steel box-girder, improves the mechanical property of steel box-girder.
It is furthermore preferred that the gooseneck has I-shaped cross section, connected between gooseneck and the steel box-girder by bolt
It connects or welds, the vertical bridge of gooseneck is consistent with the lengthwise position of the interior steel diaphragm to position.Gooseneck uses I-steel, stress
Well；The vertical bridge of gooseneck is set as consistent with the lengthwise position of interior steel diaphragm to position, improves more steel box-girder combinations
Stability afterwards.The gooseneck is arranged on the middle and lower part of the steel box-girder, gooseneck and the Prefabricated composite floorings not phase
Connection.The composite beam bridge is set side by side with 2-3 root steel box-girders along direction across bridge, and 7-12m is spaced between adjacent steel box-girder, due to this
The steel box-girder and Prefabricated composite deck structrue of invention have good stress and lighter dead weight, apply the bridge in middle span
Liang Shi can be used less steel box-girder (2-3 roots), larger spacing can be kept between steel box-girder.
The technical concept total as one, the present invention also provides a kind of above-mentioned few girders using Prefabricated composite floorings
The construction method of composite beam bridge, includes the following steps：
The prefabricated steel box-girder of S1, on-site hoisting is in place, the prefabricated gooseneck of on-site hoisting, and by gooseneck and steel case
Beam is bolted or welds；
S2, on-site hoisting Prefabricated composite floorings, and the Prefabricated composite bridge floor board mounting stand is located on steel box-girder, then
Shaped steel in Prefabricated composite floorings and steel box-girder top plate are welded；
S3, perforation reinforcing bar is worn in the through-hole of shaped steel, cast in situs steel is fine in laterally wet seam and longitudinal wet joint
Concrete is tieed up, maintenance forms floorings, bridge deck pavement of then constructing on floorings completes few girder composite beam bridge
Construction.
Compared with prior art, the advantage of the invention is that：
(1) Prefabricated composite floorings using the present invention, more existing concrete slab can mitigate floorings oneself
40% is weighed, increases the horizontal span of floorings, mitigates bridge structure always dead weight 27%, mitigates the project cost of bridge.
(2) using the composite beam of steel box structure of few girder so that the composite beam bridge has larger bending stiffness and antitorque
Rigidity, and steel using amount can be saved.During wide applied to Medium Span, bridge bridge, bridge dead weight can be mitigated well, changed
Kind bridge force-bearing situation, reduces project cost.
(3) Prefabricated composite deck structrue form in few girder composite beam bridge is reasonable, one-way slabs stress, shaped steel by
It draws, concrete compression so that composite beam bridge has rational stressing conditions.
(4) few girder composite beam bridge factory prefabricating degree is high, and Prefabricated composite floorings are suitble to factory modularization to produce,
It effectively shortens construction period, reduce project cost.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the stereoscopic schematic diagram of the few girder composite beam bridge of the present invention.
Fig. 2 is the axonometric drawing of the few girder composite beam bridge of the present invention.
Fig. 3 is the cross-sectional view of the few girder composite beam bridge of the present invention.
Fig. 4 is the apical axis mapping of Prefabricated composite floorings in the few girder composite beam bridge of the present invention.
Fig. 5 is the lower shaft mapping of Prefabricated composite floorings in the few girder composite beam bridge of the present invention.
Fig. 6 is the structure diagram of the few girder composite beam bridge Shaped Steel of the present invention.
Fig. 7 is the partial enlarged view of the few girder composite beam bridge of the present invention.
Marginal data：
1st, steel box-girder；2nd, gooseneck；3rd, Prefabricated composite floorings；4th, lateral wet seam；5th, longitudinal wet joint；101st, steel case
Beam web；102nd, steel box-girder top plate；103rd, steel box-girder bottom plate；104th, top plate weldering nail connector；105th, ribbed stiffener；106th, interior steel every
Plate；301st, shaped steel；302nd, concrete layer；303rd, perforation reinforcing bar；304th, vertically and horizontally bar-mat reinforcement；3011st, through-hole；3021st,
One concrete layer；3022nd, the second concrete layer.
Specific embodiment
For the ease of understanding the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.
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 among other
Fitting is indirectly fixed, affixed, connection or connection are on another element.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection domain.
Embodiment
The present invention uses a kind of embodiment of few girder composite beam bridge of Prefabricated composite floorings.Few girder composite beam bridge
It is less (2-3 roots) to be primarily adapted for use in highway and city Medium Span (40-60m), bridge width wider (10-18m), girder radical
Composite beam bridge.This lacks the structure of girder composite beam bridge as shown in Figures 1 to 7, by Fig. 1 to Fig. 7 as it can be seen that it mainly includes more
Along bridge to the steel box-girder 1 of setting, polylith Prefabricated composite floorings 3 are provided on steel box-girder 1, pass through steel horizontal stroke between steel box-girder 1
Beam 2 connects.Interval forms laterally wet seam 4 between adjacent Prefabricated composite floorings 3.The Prefabricated composite floorings 3 include more
The shaped steel 301 and pour in the concrete layer 302 on the shaped steel 301 that root direction across bridge is arranged.The bottom welding of shaped steel 301
At the top of steel box-girder 1, Prefabricated composite floorings 3 are in formation longitudinal wet joint 5 in the top extent of steel box-girder 1.On shaped steel 301
It offers multiple through-holes 3011 side by side in the range of longitudinal wet joint 5, wearing for more shaped steel 301 of connection is equipped in through-hole 3011
Hole reinforcing bar 303.Double-deck vertically and horizontally bar-mat reinforcement 304 are provided in concrete layer 302, vertically and horizontally bar-mat reinforcement 304 stretches out prefabricated
It the prefabricated range of combined bridge deck 3 and is overlapped with perforation reinforcing bar 303, the bar diameter and reinforcing bar of the vertically and horizontally bar-mat reinforcement 304
Spacing is analyzed according to Force Calculation and bridge structure requirement is specific determines.It is live in laterally wet seam 4 and longitudinal wet joint 5
Pour wet joint concrete.Few girder composite beam bridge passes through special Prefabricated composite using separated steel case combined beam structure
3 structure of floorings is combined with steel box-girder 1 improves the stress of bridge, alleviates bridge dead weight, improves the carrying energy of bridge
Power expands the scope of application of bridge.Prefabricated using modularization, structure type is simple, short construction period, comprehensive cost low.
In the present embodiment, concrete layer 302 includes the first concrete layer 3021 and the second concrete layer
3022.Wherein, the first concrete layer 3021 is the bridge overall with for removing 1 width range of steel box-girder, and the second concrete
Soil layer 3022 is the part for extending 15-25cm inwardly by the outside of steel box-girder 1, forms downward boss-shaped, is placed in steel box-girder 1
Top.The height of second concrete layer 3022 is Prefabricated composite floorings overall height.301 and first precast concrete of shaped steel
The upper surface of 3021 joining part of layer is provided with weldering nail connector, and the first concrete layer 3021 is cast in the upper of shaped steel 301
Side follows closely connector by the weldering being embedded in the first concrete layer 3021 and ensures 301 and first concrete layer of shaped steel
3021, stress is participated in jointly.Second concrete layer 3022 wraps up shaped steel 301 in the range of 3 overall height of Prefabricated composite floorings.
In the present embodiment, the thickness of Prefabricated composite floorings 3 is 26-36cm, and the height of shaped steel 301 is 10-16cm, first
The thickness of concrete layer 3021 is 16-20cm, and laterally the width of wet seam 4 is 40-60cm.First concrete layer
The thickness of 3021 the second concrete layer of thickness ratio 3022 is small, is conducive to mitigate bridge dead weight.Wet joint concrete is
Steel fiber reinforced concrete is more conducive to the mechanical property for improving few girder composite beam bridge.The quantity of shaped steel 301 is preferably 4-6 roots,
Suitable bridge between adjacent shaped steel 301 is preferably 0.8-1.5m to spacing, and concrete numerical value calculates true according to the specific requirement of bridge
It is fixed.Through-hole 3011 is preferably opened in the center of the web of shaped steel 301, and stress can be made more reasonable.
In the present embodiment, steel box-girder 1 includes steel box-girder web 101, the steel box-girder top for being welded on 101 top of steel box-girder web
Plate 102 and the steel box-girder bottom plate 103 for being welded on 101 lower section of steel box-girder web.Wherein, the thickness of steel box-girder bottom plate 103 is more than
The thickness of steel box-girder top plate 102.The height of steel box-girder web 101 and the width of steel box-girder top plate 102 and steel box-girder bottom plate 103 it
Than controlling in 1/3-1/2.Top plate weldering nail connector 104 is provided on steel box-girder top plate 102, top plate weldering nail connector 104 is in
Arranged in rows, and there are gaps between top plate weldering nail connector 104 at the shaped steel 301 and shaped steel 301.In steel box-girder top plate
Top plate is set to weld nail connector 104 on 102, steel box-girder 1 can be made to join jointly with wet joint concrete 6 and Prefabricated composite floorings 3
With stress, there are gaps between top plate weldering nail connector 104 and shaped steel 301, it is ensured that wet joint concrete 6 pours closely knit.
In the present embodiment, in steel box-girder top plate 102, steel box-girder bottom plate 103 and steel box-girder web inside the chamber of steel box-girder 1
Ribbed stiffener 105 is both provided on 101, which is preferably rib of slab, T-shaped rib, the flat rib of ball or U ribs.In the case of steel box-girder 1
Chamber interior sets ribbed stiffener 105, can effectively improve the stability and torsional property of steel box-girder 1.It is set inside the chamber of steel box-girder 1
Steel diaphragm 106 in polylith are equipped with, the inner wall of the interior steel diaphragm 106 and steel box-girder 1 welds, and is provided with hole on interior steel diaphragm 106, puts more energy into
105 longitudinal direction of rib, which is run through, to be arranged in the hole.In this way, further improving the stability of steel box-girder 1, the power of steel box-girder 1 is improved
Learn performance.
The gooseneck 2 for connecting more steel box-girders 1 has I-shaped cross section, passes through bolt between gooseneck 2 and steel box-girder 1
Connection or welding, the vertical bridge of gooseneck 2 are consistent with the lengthwise position of interior steel diaphragm 106 to position.In this way, gooseneck 2 uses work
Word girder steel stress is good, and interior steel diaphragm 106 is consistent with 2 lengthwise position of gooseneck, after improving the more combinations of steel box-girders 1
Stability.Gooseneck 2 is arranged on the middle and lower part of steel box-girder 1, and gooseneck 2 is not connected with Prefabricated composite floorings 3, can be more preferable
Stablize few girder composite beam bridge in ground.The composite beam bridge is set up in parallel 2-3 roots steel box-girder 1 along direction across bridge, and between adjacent steel box-girder 1
It is spaced 7-12m.Since the steel box-girder 1 and 3 structure of Prefabricated composite floorings of the present invention have good stress and lighter dead weight,
When applying in highway and city Medium Span composite beam bridge, it can be used steel box-girder 1 (2-3 roots) less, and steel box-girder 1
Between can keep larger spacing.The Prefabricated composite floorings 3 that few girder composite beam bridge uses from heavy and light, bearing capacity
Greatly, system reasonable stress, material use be efficient and good integrity, adapts to the larger bridge of width, suitable industrialization is built
It makes, there is the advantages of structure type is simple, short construction period, stress performance is good, comprehensive cost low.Efficiently solve existing bridge floor
Plate is from the problems such as great, horizontal span is small, easy to crack.
The construction method of few girder composite beam bridge is as follows：
First, the prefabricated steel box-girder 1 of on-site hoisting is in place, the prefabricated gooseneck 2 of on-site hoisting, and by gooseneck 2
It is bolted or welds with steel box-girder 1；
Then, on-site hoisting Prefabricated composite floorings 3, and the Prefabricated composite floorings 3 installation is erected at steel box-girder 1
On, then the shaped steel 301 in Prefabricated composite floorings 3 is welded with steel box-girder top plate 102；
Finally, perforation reinforcing bar 303 is worn in the through-hole 3011 of shaped steel 301, in laterally wet seam 4 and longitudinal wet joint 5
Interior cast in situs steel fiber reinforced concrete, maintenance form floorings, bridge deck pavement of then constructing on floorings is completed few
The construction of girder composite beam bridge.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of few girder composite beam bridge using Prefabricated composite floorings, including more along bridges to the steel box-girder of setting（1）, even
Connect the steel box-girder（1）Gooseneck（2）And polylith is set up in the steel box-girder（1）On Prefabricated composite floorings（3）, phase
The adjacent Prefabricated composite floorings（3）Between interval form laterally wet seam（4）, it is characterised in that：The Prefabricated composite bridge floor
Plate（3）Include the shaped steel of more direction across bridge arrangements（301）And it pours in the shaped steel（301）On concrete layer
（302）, the shaped steel（301）Bottom be welded on the steel box-girder（1）On, the Prefabricated composite floorings（3）In the steel
Box beam（1）Top extent in formed longitudinal wet joint（5）, the shaped steel（301）On in the longitudinal wet joint（5）In the range of
Offer multiple through-holes（3011）, the through-hole（3011）Inside it is equipped with the more shaped steel of connection（301）Perforation reinforcing bar
（303）, the concrete layer（302）Inside it is provided with vertically and horizontally bar-mat reinforcement（304）, the vertically and horizontally bar-mat reinforcement（304）It stretches
Go out the Prefabricated composite floorings（3）Prefabricated range and with the perforation reinforcing bar（303）Connection, the wet seam of transverse direction（4）
And longitudinal wet joint（5）Inside cast-in-place wet joint concrete；The through-hole（3011）It is opened in the shaped steel（301）Web
Center.
2. few girder composite beam bridge according to claim 1 using Prefabricated composite floorings, it is characterised in that：It is described pre-
Concrete layer processed（302）Including the first concrete layer（3021）With the second concrete layer（3022）, described first is pre-
Concrete layer processed（3021）To remove the steel box-girder（1）The bridge overall with of width range, second concrete layer
（3022）By steel box-girder（1）Outside extend 15-25cm, the second concrete layer inwardly（3022）Height to be described pre-
Combined bridge deck processed（3）Overall height.
3. few girder composite beam bridge according to claim 2 using Prefabricated composite floorings, it is characterised in that：The type
Steel（301）With first concrete layer（3021）The upper surface of joining part, which is provided with, welds nail connector, and described second
Concrete layer（3022）In the Prefabricated composite floorings（3）The shaped steel is wrapped up in the range of overall height（301）.
4. few girder composite beam bridge according to claim 3 using Prefabricated composite floorings, it is characterised in that：It is described pre-
Combined bridge deck processed（3）Thickness for 26-36cm, the shaped steel（301）Height for 10-16cm, first concrete
Soil layer（3021）Thickness for 16-20cm, the wet seam of transverse direction（4）Width for 40-60cm, the wet joint concrete is
Steel fiber reinforced concrete.
5. few girder composite beam bridge according to claim 2 using Prefabricated composite floorings, it is characterised in that：The type
Steel（301）Quantity for 4-6 roots, the adjacent shaped steel（301）Between suitable bridge to spacing be 0.8-1.5m.
6. few girder composite beam bridge according to any one of claims 1-5 using Prefabricated composite floorings, feature
It is：The steel box-girder（1）Including steel box-girder web（101）, be welded on the steel box-girder web（101）The steel box-girder top of top
Plate（102）And it is welded on the steel box-girder web（101）The steel box-girder bottom plate of lower section（103）, the steel box-girder bottom plate（103）
Thickness be more than the steel box-girder top plate（102）Thickness, the steel box-girder web（101）Height and the steel box-girder top plate
（102）And steel box-girder bottom plate（103）The control of the ratio between width in 1/3-1/2；The steel box-girder top plate（102）On be provided with top plate
Weldering nail connector（104）, the top plate weldering nail connector（104）In arranged in rows, close to the shaped steel（301）The top plate weldering at place
Follow closely connector（104）With shaped steel（301）Between there are gaps.
7. few girder composite beam bridge according to claim 6 using Prefabricated composite floorings, it is characterised in that：The steel
Box beam（1）Chamber inside in the steel box-girder top plate（102）, steel box-girder bottom plate（103）With steel box-girder web（101）On be all provided with
It is equipped with ribbed stiffener（105）, the ribbed stiffener（105）For rib of slab, T-shaped rib, the flat rib of ball or U ribs.
8. few girder composite beam bridge according to claim 7 using Prefabricated composite floorings, it is characterised in that：The steel
Box beam（1）Chamber be internally provided with steel diaphragm in polylith（106）, the interior steel diaphragm（106）With the steel box-girder（1）Weldering
It connects, interior steel diaphragm（106）On be provided with hole, the ribbed stiffener（105）Setting is run through in the hole in longitudinal direction.
9. few girder composite beam bridge according to claim 8 using Prefabricated composite floorings, it is characterised in that：The steel
Crossbeam（2）With I-shaped cross section, gooseneck（2）With the steel box-girder（1）Between be bolted or weld, gooseneck
（2）Vertical bridge to position and the interior steel diaphragm（106）Lengthwise position it is consistent；The gooseneck（2）It is arranged on the steel case
Beam（1）Middle and lower part, gooseneck（2）With the Prefabricated composite floorings（3）It is not connected with；The composite beam bridge along direction across bridge simultaneously
Row are provided with 2-3 root steel box-girders（1）, adjacent steel box-girder（1）Between be spaced 7-12m.
10. a kind of few girder composite beam bridge as claimed in any one of claims 1-9 wherein using Prefabricated composite floorings is applied
Work method, includes the following steps：
The prefabricated steel box-girder of S1, on-site hoisting（1）In place, the prefabricated gooseneck of on-site hoisting（2）, and by gooseneck（2）
With steel box-girder（1）It is bolted or welds；
S2, on-site hoisting Prefabricated composite floorings（3）, and by the Prefabricated composite floorings（3）Installation is erected at steel box-girder（1）
On, then by Prefabricated composite floorings（3）In shaped steel（301）With steel box-girder top plate（102）It is welded；
S3, in shaped steel（301）Through-hole（3011）Inside wear perforation reinforcing bar（303）, in laterally wet seam（4）And longitudinal wet joint
（5）Interior cast in situs steel fiber reinforced concrete, maintenance form floorings, bridge deck pavement of then constructing on floorings is completed
The construction of few girder composite beam bridge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611261984.4A CN106638254B (en) | 2016-12-30 | 2016-12-30 | A kind of few girder composite beam bridge and its construction method using Prefabricated composite floorings |
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| CN201611261984.4A CN106638254B (en) | 2016-12-30 | 2016-12-30 | A kind of few girder composite beam bridge and its construction method using Prefabricated composite floorings |
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| CN106638254B true CN106638254B (en) | 2018-06-29 |
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| KR100296420B1 (en) * | 1998-09-02 | 2001-10-26 | 남상국 | Method of joining joint between precast concrete bridge deck and mold |
| KR20120029625A (en) * | 2010-09-17 | 2012-03-27 | 변형균 | Construction method of steel composite girder bridge applying precast deck |
| KR20160053289A (en) * | 2014-11-03 | 2016-05-13 | (주)삼현피에프 | Precast half-slab for bridge and method of constructing bridge superstructure using same |
| CN204530418U (en) * | 2015-03-19 | 2015-08-05 | 安徽省交通规划设计研究总院股份有限公司 | A kind of steel plate combination beam bridge |
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| CN105350445A (en) * | 2015-09-24 | 2016-02-24 | 中交第二航务工程局有限公司 | Novel efficient assembly-type reinforced concrete composite beam |
| CN206418384U (en) * | 2016-12-30 | 2017-08-18 | 湖南省交通规划勘察设计院 | A kind of few girder composite beam bridge of use Prefabricated composite floorings |
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