CN206418384U - A kind of few girder composite beam bridge of use Prefabricated composite floorings - Google Patents
A kind of few girder composite beam bridge of use Prefabricated composite floorings Download PDFInfo
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- CN206418384U CN206418384U CN201621483171.5U CN201621483171U CN206418384U CN 206418384 U CN206418384 U CN 206418384U CN 201621483171 U CN201621483171 U CN 201621483171U CN 206418384 U CN206418384 U CN 206418384U
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Abstract
The utility model discloses a kind of few girder composite beam bridge of use 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 many shaped steel and poured 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 many shaped steel of connection is equipped with through hole, vertically and horizontally bar-mat reinforcement is provided with concrete layer, vertically and horizontally bar-mat reinforcement stretch out Prefabricated composite floorings prefabricated scope and with perforation bar connecting, cast-in-place wet joint concrete in horizontal 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 utility model is related to composite bridge technical field, and in particular to a kind of use Prefabricated composite floorings lack
Girder composite beam bridge.
Background technology
At present, with the development and practice of science of bridge building, the increasing engineering skill of application on 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, make
Valency is relatively low, but its construction period it is long, from great, poor durability；Truss bridge can greatly shorten duration, reduction structure
Deadweight, but cost is higher, and the disease of orthogonal special-shaped steel bridge deck is protruded；Steel plate and concrete composite beam fast-developing in recent years
Bridge, then given full play to the characteristic of material, not only easy construction, short time limit, conducts oneself with dignity low, and cost is relatively low, and is had
Wide variety of 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, its 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, steel plate combination beam is open section due to it, and antitorque and bending rigidity 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 when applying on the wide larger bridge of bridge, to ensure that the stress of concrete slab is had to
Reduce girder direction across bridge spacing, increase steel using amount, so as to limit its application.Therefore, separate type composite beam of steel box is improved
Floorings stress is particularly important.
At present, the conventional 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 thickness of slab about 28cm, maximum transversal span about 5m, and under load action
Easy cracking damage, influences structure durability.It is general using prestressed concrete bridge face when floorings horizontal span is larger
Plate, but it needs live tensioning transverse prestress, construction procedure is cumbersome.And the thickness of slab of prestressed concrete bridge panel is still thicker,
About 26cm, conducts oneself with dignity larger.By taking an across footpath 4x40m, the wide 16.5m of bridge composite beam bridge as an example, it is considered to 10cm deck paving it
Afterwards, the deadweight 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 deadweight 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.
Utility model content
Technical problem to be solved in the utility model is to overcome the shortcomings of to mention and defect in background above technology, is carried
For a kind of use Prefabricated composite floorings larger from heavy and light, large carrying capacity, reasonable stress, good integrity, adaptation width
Few girder composite beam bridge.
In order to solve the above technical problems, the utility model proposes technical scheme be：
A kind of few girder composite beam bridge of use Prefabricated composite floorings, including many along steel box-girder from bridges to setting, even
The gooseneck and polylith for connecing the steel box-girder are 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 many direction across bridge arrangements shaped steel and
Pour 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 in the top extent of the steel box-girder in forming on longitudinal wet joint, the shaped steel in the range of the longitudinal wet joint
Offer in the perforation reinforcing bar that many shaped steel of connection is equipped with multiple through holes, the through hole, the concrete layer
Vertically and horizontally bar-mat reinforcement is provided with, the vertically and horizontally bar-mat reinforcement stretches out the prefabricated scope of the Prefabricated composite floorings and worn with described
Cast-in-place wet joint concrete in hole bar connecting, the wet seam of 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
Footpath (40-60m), bridge width wider (10-18m), the bridge of girder radical less (2-3 roots), efficiently solve existing bridge floor
Plate from great, horizontal span it is small, it is easy to crack the problems such as；Prefabricated using modularization, structure type is simple, short construction period, synthesis
Low cost.
It is used as the further improvement to above-mentioned technical proposal：
It is preferred that, the concrete layer includes the first concrete layer and the second concrete layer, described the
One concrete layer is removes the bridge overall with of the steel box-girder width range, and second concrete layer is by steel box-girder
Outside extend 15-25cm to inner side, the height of the second concrete layer is the Prefabricated composite floorings overall height.Will be prefabricated
Concrete layer is divided into two parts, wherein the first concrete layer is arranged on the top of shaped steel, its 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, so setting can effectively reduce pre-
Combined bridge deck deadweight processed.
It is connected it is furthermore preferred that the shaped steel is provided with weldering nail with the upper surface of the first concrete layer joining part
Part, it is ensured that the compound action of the first concrete layer and shaped steel, participates in stress jointly.Second concrete layer is in institute
State and wrap up the shaped steel in the range of Prefabricated composite floorings overall height, the second concrete layer is participated 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 for stating the first concrete layer is 16-20cm, and 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, and few girder composite beam bridge has good stressing conditions.It is described wet to connect
Seam concrete is steel fiber reinforced concrete, is mixed using the steel fibre for the short steel fibre formation that random distribution is mixed in normal concrete
The steel fibre of random distribution can effectively hinder extension and the macroscopic view of inside concrete microcrack in solidifying soil, the steel fiber reinforced concrete
The formation in crack, significantly improves tension, bending resistance, shock resistance and the anti-fatigue performance of concrete, with good ductility.Using
Steel fiber reinforced concrete, which pours wet seam, can further improve the stressing conditions of few girder composite beam bridge.
It is preferred that, the quantity of the shaped steel be suitable bridge between 4-6 roots, 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 determined.The through hole is circular hole, and is opened in described
The center of the web of shaped steel, further improves stress.
It is preferred that, 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 control of the ratio between width of the thickness of plate, the height of the steel box-girder web and 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 Prefabricated composite floorings of the present utility model, it is ensured that composite beam bridge has
There are preferable section bending resistance and torsional rigidity, with good mechanical property so that larger horizontal stroke can be kept between steel box-girder
Bridge reduces steel using amount to spacing, alleviates bridge deadweight, and then expand the application of the composite beam bridge.The steel case
Top plate weldering nail connector is provided with back plate, it is ensured that steel box-girder and the compound action of wet joint concrete, stress is participated in jointly.
The top plate weldering nail connector is in arranged in rows, between being left between the top plate weldering nail connector and shaped steel at the shaped steel
Gap so that wet joint concrete is in close contact with shaped steel, is filled 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 provided with ribbed stiffener, the ribbed stiffener is rib of slab, T-shaped rib, the flat rib of ball or U ribs, set inside the chamber of steel box-girder 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
It is provided with hole on box beam Welding, interior steel diaphragm, the ribbed stiffener is longitudinally through setting in the hole, inside the chamber of steel box-girder
Steel diaphragm in setting, further increases 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
Connect or weld, 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 to position consistent with the lengthwise position of interior steel diaphragm, improves the combination of many steel box-girders
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 between 2-3 root steel box-girders, adjacent steel box-girder along direction across bridge and is spaced 7-12m, due to this
The steel box-girder and Prefabricated composite deck structrue of utility model have good stress and lighter deadweight, apply in middle span
Bridge when, can be used can keep larger spacing between less steel box-girder (2-3 roots), steel box-girder.
Compared with prior art, the utility model has the advantage of：
(1) Prefabricated composite floorings of the present utility model are used, more existing concrete slab can mitigate floorings
Deadweight 40%, increase floorings horizontal span, mitigate bridge structure always deadweight 27%, mitigate bridge construction costs.
(2) using the composite beam of steel box structure of few girder so that the composite beam bridge has larger bending rigidity and antitorque
Rigidity, and steel using amount can be saved.During wide applied to Medium Span, bridge bridge, bridge deadweight can be mitigated well, changed
Kind bridge force-bearing situation, reduces construction costs.
(3) Prefabricated composite deck structrue form in few girder composite beam bridge rationally, one-way slabs stress, shaped steel by
Drawing, 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 adapted to factory modularization production,
Effectively shorten construction period, reduction construction costs.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the schematic perspective view of the few girder composite beam bridge of the utility model.
Fig. 2 is the axonometric drawing of the few girder composite beam bridge of the utility model.
Fig. 3 is the cross-sectional view of the few girder composite beam bridge of the utility model.
Fig. 4 is the apical axis mapping of Prefabricated composite floorings in the few girder composite beam bridge of the utility model.
Fig. 5 is the lower shaft mapping of Prefabricated composite floorings in the few girder composite beam bridge of the utility model.
Fig. 6 is the structural representation of the few girder composite beam bridge Shaped Steel of the utility model.
Fig. 7 is the partial enlarged drawing of the few girder composite beam bridge of the utility model.
Marginal data：
1st, steel box-girder；2nd, gooseneck；3rd, Prefabricated composite floorings；4th, horizontal wet seam；5th, longitudinal wet joint；101st, steel case
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.
Embodiment
For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model
Work more comprehensively, is meticulously described, but protection domain of the present utility model is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another
When on element, it can be directly fixed, affixed, connection or connect on another element or by connecting in the middle of other
Fitting is indirectly fixed, affixed, connection or connection are on another element.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to and limits this practicality
New protection domain.
Embodiment
The utility model uses a kind of embodiment of few girder composite beam bridge of Prefabricated composite floorings.Few girder combination
Beam bridge is primarily adapted for use in highway and city Medium Span (40-60m), bridge width wider (10-18m), the less (2- of girder radical
3) composite beam bridge.As shown in Figures 1 to 7, from Fig. 1 to Fig. 7, it mainly includes the structure of few girder composite beam bridge
Many suitable bridges are provided between polylith Prefabricated composite floorings 3, steel box-girder 1 in the restocking of steel box-girder 1 and passed through to the steel box-girder 1 of setting
Gooseneck 2 is connected.Interval forms laterally wet seam 4 between adjacent Prefabricated composite floorings 3.The Prefabricated composite floorings 3 are wrapped
Include the shaped steel 301 of many direction across bridge arrangement and pour in the concrete layer 302 on the shaped steel 301.The bottom of shaped steel 301
The top of steel box-girder 1 is welded on, Prefabricated composite floorings 3 are in formation longitudinal wet joint 5 in the top extent of steel box-girder 1.Shaped steel
Offered side by side in the range of longitudinal wet joint 5 on 301 and many shaped steel of connection are equipped with multiple through holes 3011, through hole 3011
301 perforation reinforcing bar 303.Double-deck vertically and horizontally bar-mat reinforcement 304 are provided with concrete layer 302, vertically and horizontally bar-mat reinforcement 304 is stretched
Go out the prefabricated scope of Prefabricated composite floorings 3 and overlapped with perforation reinforcing bar 303, the bar diameter of the vertically and horizontally bar-mat reinforcement 304
And bar spacing is analyzed and the specific determination of bridge structure requirement according to Force Calculation.In laterally wet seam 4 and longitudinal wet joint 5
The wet joint concrete of equal cast in situs.Few girder composite beam bridge uses separated steel case combined beam structure, by special pre-
The structure of combined bridge deck 3 processed is combined with steel box-girder 1 improves the stress of bridge, alleviates bridge deadweight, improves bridge
Bearing capacity, expands the scope of application of bridge.Prefabricated using modularization, structure type is simple, short construction period, comprehensive cost
It is 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 the width range of steel box-girder 1, and the second concrete
Soil layer 3022 is the part for extending 15-25cm from the outside of steel box-girder 1 to inner side, 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.The precast concrete of shaped steel 301 and first
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 the concrete layer of shaped steel 301 and first
3021, stress is participated in jointly.Second concrete layer 3022 wraps up shaped steel 301 in the range of the overall height of Prefabricated composite floorings 3.
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 mitigating bridge deadweight.Wet joint concrete is
Steel fiber reinforced concrete, advantageously in the mechanical property of the few girder composite beam bridge of improvement.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 its 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, stress can be made more reasonable.
In the present embodiment, steel box-girder 1 includes steel box-girder web 101, is welded on the steel box-girder top of the top of steel box-girder web 101
Plate 102 and the steel box-girder bottom plate 103 for being welded on the lower section of steel box-girder web 101.Wherein, the thickness of steel box-girder bottom plate 103 is more than
The thickness of steel box-girder top plate 102.The width of the height of steel box-girder web 101 and 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 with steel box-girder top plate 102, top plate weldering nail connector 104 is in
Gap is left between top plate weldering nail connector 104 and shaped steel 301 at arranged in rows, and close shaped steel 301.In steel box-girder top plate
Set top plate 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, gap is left 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 provided with 101, the ribbed stiffener 105 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.Set inside the chamber of steel box-girder 1
Steel diaphragm 106 in polylith are equipped with, the inwall of the interior steel diaphragm 106 and steel box-girder 1 is welded, and is provided with hole on interior steel diaphragm 106, is put more energy into
Rib 105 is longitudinally through being arranged in the hole.In this way, further increasing the stability of steel box-girder 1, the power of steel box-girder 1 is improved
Learn performance.
Connecting the gooseneck 2 of many steel box-girders 1 has I-shaped cross section, and bolt is passed through between gooseneck 2 and steel box-girder 1
Connection is welded, and the vertical bridge of gooseneck 2 is 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 the lengthwise position of gooseneck 2, improves after many 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
Ground is stable to lack girder composite beam bridge.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.Because steel box-girder 1 of the present utility model and the structure of Prefabricated composite floorings 3 have good stress and lighter
Deadweight, when applying in highway and city Medium Span composite beam bridge, can be used steel box-girder 1 (2-3 roots) less, and steel
Larger spacing can be kept between box beam 1.The Prefabricated composite floorings 3 that few girder composite beam bridge is used from heavy and light, carrying
Ability is big, system reasonable stress, material use efficiency high and good integrity, adapts to the larger bridge of width, is adapted to industry
Change and build, short construction period simple with structure type, stress performance is good, the advantage of comprehensive cost low.Efficiently solve existing
Floorings from great, horizontal span is small, it is easy to crack the problems such as.
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 and steel box-girder top plate 102 are welded；
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 forms floorings, and bridge deck pavement of then being constructed on floorings completes few
The construction of girder composite beam bridge.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (9)
1. a kind of few girder composite beam bridge of use Prefabricated composite floorings, including many along steel box-girder (1), even from bridges to setting
The gooseneck (2) and polylith for connecing the steel box-girder (1) are set up in Prefabricated composite floorings (3) on the steel box-girder (1), phase
Interval forms laterally wet seam (4) between the adjacent Prefabricated composite floorings (3), it is characterised in that：The Prefabricated composite bridge floor
Shaped steel (301) and pour in the concrete layer on the shaped steel (301) that plate (3) is arranged including many direction across bridge
(302), the bottom of the shaped steel (301) is welded on the steel box-girder (1), and the Prefabricated composite floorings (3) are in the steel
Formed in the top extent of box beam (1) on longitudinal wet joint (5), the shaped steel (301) in the range of the longitudinal wet joint (5)
Offer the perforation reinforcing bar that many shaped steel (301) of connection are equipped with multiple through holes (3011), the through hole (3011)
(303) vertically and horizontally bar-mat reinforcement (304), are provided with the concrete layer (302), the vertically and horizontally bar-mat reinforcement (304) is stretched
Go out the prefabricated scope of the Prefabricated composite floorings (3) and be connected with the perforation reinforcing bar (303), the wet seam of transverse direction (4)
With cast-in-place wet joint concrete in longitudinal wet joint (5).
2. few girder composite beam bridge of use Prefabricated composite floorings according to claim 1, it is characterised in that：It is described pre-
Concrete layer (302) processed includes the first concrete layer (3021) and the second concrete layer (3022), and described first is pre-
Concrete layer (3021) processed is the bridge overall with of removing steel box-girder (1) width range, second concrete layer
(3022) 15-25cm is extended from the outside of steel box-girder (1) to inner side, the height of the second concrete layer (3022) is described pre-
Combined bridge deck (3) overall height processed.
3. few girder composite beam bridge of use Prefabricated composite floorings according to claim 2, it is characterised in that：The type
The upper surface of steel (301) and the first concrete layer (3021) joining part is provided with weldering nail connector, described second
Concrete layer (3022) wraps up the shaped steel (301) in the range of Prefabricated composite floorings (3) overall height.
4. few girder composite beam bridge of use Prefabricated composite floorings according to claim 3, it is characterised in that：It is described pre-
The thickness of combined bridge deck (3) processed is 26-36cm, and the height of the shaped steel (301) is 10-16cm, first concrete
The thickness of soil layer (3021) is 16-20cm, and the width of the wet seam of transverse direction (4) is 40-60cm, and the wet joint concrete is
Steel fiber reinforced concrete.
5. few girder composite beam bridge of use Prefabricated composite floorings according to claim 1, it is characterised in that：The type
The quantity of steel (301) is 4-6 roots, suitable the bridge between the adjacent shaped steel (301) to spacing be 0.8-1.5m, the through hole
(3011) it is opened in the center of the web of the shaped steel (301).
6. few girder composite beam bridge of the use Prefabricated composite floorings according to any one of claim 1-5, its feature
It is：The steel box-girder (1) includes steel box-girder web (101), the steel box-girder top being welded on above the steel box-girder web (101)
Plate (102) and the steel box-girder bottom plate (103) being welded on below the steel box-girder web (101), the steel box-girder bottom plate (103)
Thickness be more than the thickness of the steel box-girder top plate (102), the height of the steel box-girder web (101) 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；Top plate is provided with the steel box-girder top plate (102)
Weldering nail connector (104), the top plate weldering nail connector (104) is in arranged in rows, and the top plate close to the shaped steel (301) place is welded
Gap is left between nail connector (104) and shaped steel (301).
7. few girder composite beam bridge of use Prefabricated composite floorings according to claim 6, it is characterised in that：The steel
It is all provided with inside the chamber of box beam (1) on the steel box-girder top plate (102), steel box-girder bottom plate (103) and steel box-girder web (101)
Ribbed stiffener (105) is equipped with, the ribbed stiffener (105) is rib of slab, T-shaped rib, the flat rib of ball or U ribs.
8. few girder composite beam bridge of use Prefabricated composite floorings according to claim 7, it is characterised in that：The steel
The chamber of box beam (1) is internally provided with steel diaphragm in polylith (106), and the interior steel diaphragm (106) is welded with the steel box-girder (1)
Connect, be provided with hole on interior steel diaphragm (106), the ribbed stiffener (105) is longitudinally through setting in the hole.
9. few girder composite beam bridge of use Prefabricated composite floorings according to claim 8, it is characterised in that：The steel
Crossbeam (2) has I-shaped cross section, is bolted or welds between gooseneck (2) and the steel box-girder (1), gooseneck
(2) vertical bridge is consistent with the lengthwise position of the interior steel diaphragm (106) to position；The gooseneck (2) is arranged on the steel case
The middle and lower part of beam (1), gooseneck (2) is not connected with the Prefabricated composite floorings (3)；The composite beam bridge along direction across bridge simultaneously
Row, which are provided between 2-3 roots steel box-girder (1), adjacent steel box-girder (1), is spaced 7-12m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621483171.5U CN206418384U (en) | 2016-12-30 | 2016-12-30 | A kind of few girder composite beam bridge of use Prefabricated composite floorings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN106638254A (en) * | 2016-12-30 | 2017-05-10 | 湖南省交通规划勘察设计院 | Secondary main beam composite beam bridge using prefabricated composite bridge deck slabs and construction method of secondary main beam composite beam bridge |
| CN107938495A (en) * | 2018-01-10 | 2018-04-20 | 李国栋 | A kind of novel fabricated prestressing force steel reinforced concrete bridge span structure |
| CN109487674A (en) * | 2018-12-04 | 2019-03-19 | 中交公路规划设计院有限公司 | Assembling tank-shaped composite beam bridge |
| CN109530872A (en) * | 2018-09-28 | 2019-03-29 | 江苏中铁山桥重工有限公司 | A kind of 120mm slab and 24mm plate welding deformation controlling method |
| CN109868715A (en) * | 2018-11-23 | 2019-06-11 | 中交公路规划设计院有限公司 | Assembling Steel Continuous Box beam bridge |
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| CN110424242A (en) * | 2019-07-26 | 2019-11-08 | 甘肃路桥建设集团有限公司 | Assembled Wavelike steel webplate steel reinforced concrete composite beam bridge and construction method |
| CN112239991A (en) * | 2020-09-01 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Common span emergency repair simply-supported steel-concrete combined beam for railway |
| CN113356012A (en) * | 2021-06-25 | 2021-09-07 | 青海省交通建设管理有限公司 | Assembly type bridge structure in tunnel and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106638254A (en) * | 2016-12-30 | 2017-05-10 | 湖南省交通规划勘察设计院 | Secondary main beam composite beam bridge using prefabricated composite bridge deck slabs and construction method of secondary main beam composite beam bridge |
| CN107938495A (en) * | 2018-01-10 | 2018-04-20 | 李国栋 | A kind of novel fabricated prestressing force steel reinforced concrete bridge span structure |
| CN109530872A (en) * | 2018-09-28 | 2019-03-29 | 江苏中铁山桥重工有限公司 | A kind of 120mm slab and 24mm plate welding deformation controlling method |
| CN109868715A (en) * | 2018-11-23 | 2019-06-11 | 中交公路规划设计院有限公司 | Assembling Steel Continuous Box beam bridge |
| CN109868715B (en) * | 2018-11-23 | 2024-04-09 | 中交公路规划设计院有限公司 | Assembled continuous steel box girder bridge |
| CN109487674A (en) * | 2018-12-04 | 2019-03-19 | 中交公路规划设计院有限公司 | Assembling tank-shaped composite beam bridge |
| CN109972511A (en) * | 2019-03-27 | 2019-07-05 | 湖南大学 | A kind of fashioned iron-UHPC compoboard and floorings |
| CN110424242A (en) * | 2019-07-26 | 2019-11-08 | 甘肃路桥建设集团有限公司 | Assembled Wavelike steel webplate steel reinforced concrete composite beam bridge and construction method |
| CN112239991A (en) * | 2020-09-01 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Common span emergency repair simply-supported steel-concrete combined beam for railway |
| CN113356012A (en) * | 2021-06-25 | 2021-09-07 | 青海省交通建设管理有限公司 | Assembly type bridge structure in tunnel and construction method thereof |
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