CN106812057B - A kind of hybrid beam for cable-stayed bridge - Google Patents
A kind of hybrid beam for cable-stayed bridge Download PDFInfo
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- CN106812057B CN106812057B CN201710116180.3A CN201710116180A CN106812057B CN 106812057 B CN106812057 B CN 106812057B CN 201710116180 A CN201710116180 A CN 201710116180A CN 106812057 B CN106812057 B CN 106812057B
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed 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
- E01D19/00—Structural or constructional details of bridges
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Abstract
The present invention relates to bridge structure technical fields, in particular to a kind of hybrid beam for cable-stayed bridge.Including middle bridge body；The middle bridge body is steel box-girder, it is characterised in that: further includes end bay beam body；The end bay beam body includes concrete slab and the girder steel for being used to support concrete slab below floorings, is provided with toughened internal stress between end bay beam body and middle bridge body.The end bay beam body that the present invention is combined by steel reinforced concrete solves the problems, such as the anti-negative force of end bay fulcrum, by cooperating with steel reinforced concrete bondbeam, it can be widely used in the suspension cable bridge of various spans, and the end bay beam body constructing operation that steel reinforced concrete combines is simple, the difficulty of construction of end bay beam body is reduced, there is great promotional value.
Description
Technical field
The present invention relates to bridge structure technical fields, in particular to a kind of hybrid beam for cable-stayed bridge.
Background technique
The girder material of cable-stayed bridge generally has steel and two kinds of concrete, and girder can be divided by the various combination of both materials
Girder steel, beams of concrete, combination beam and hybrid beam.Combination beam is made of in cross section two kinds of materials of steel and concrete, is different
Combination of the material in section.The advantages of combination beam is to replace Orthotropic Steel Bridge Deck, good economy performance, rigidity with concrete slab
Greatly, removable to be divided into primary structural component, it is easy to transport and install；But the disadvantage is that needing to resolve floorings problem of Cracking.Combination beam is oblique
It draws bridge in 300m-600m span scope, there is good applicability.Across girder steel is used to mitigate certainly in mixing girder stayed-cable bridge
Weight increases span ability；End bay plays the role of counterweight using beams of concrete, improves the overall stiffness of full-bridge.The bridge type energy
Enough give full play to the advantage of two kinds of materials of steel and concrete, good economy performance.Mixing girder stayed-cable bridge is across the maximum one kind of ability
Cable-stayed bridge bridge type has very wide application prospect.But the mixing girder stayed-cable bridge for having adapter section built up at present is all made of
Be mode that steel box-girder is combined with beams of concrete, i.e., end bay is whole using concrete box girder, the form of fracture of end bay
Body concrete box section or bilateral box concrete cross section；Across using steel box-girder in and, in across form of fracture be whole
The closed steel case of body or bilateral steel case section.
Hybrid beam refers to that girder is made of along the length direction of beam two kinds of materials of steel and concrete, and the beam body of girder is steel
Beam, the beam body of end bay are beams of concrete.Steel girder lighter in weight, span ability is strong, and concrete girder is from great, low cost.
Two kinds of materials of hybrid beam reasonable employment steel and concrete, give full play to girder steel and the respective advantage of beams of concrete, improvement finishes
Structure system accepts power performance, and flexible utilization execution conditions optimize engineering economy.But the complete concrete beam body of end bay is applied
Work difficulty is larger, from great, pouring construction difficulty.And for such bridge, beams of concrete and steel box-girder are connected
It just needs to complicate accordingly in conjunction with segment structure, this will also result in great puzzlement for the construction of adapter section.
Summary of the invention
Present invention aim to solve the existing hybrid beam construction that above-mentioned background technique mentions is more difficult, be easy to
The problem of adapter section construction causes puzzlement, provides a kind of hybrid beam for cable-stayed bridge.
The technical solution of the present invention is as follows: a kind of hybrid beam for cable-stayed bridge, including middle bridge body；The middle bridge body
For steel box-girder, it is characterised in that: further include end bay beam body；The end bay beam body include concrete slab and be located at floorings
The girder steel for being used to support concrete slab of lower section is provided with toughened internal stress between end bay beam body and middle bridge body.
The further toughened internal stress includes steel shell；The steel shell is the hollow box body along bridge to both ends open
Structure is provided with the end bearing plate being arranged in a vertical direction in steel shell；The end bearing plate is fixed on steel shell inner side end
Steel shell inner space is divided into the second cavity of opening bridge body in towards the first cavity of end bay beam body and opening；Institute
The first cavity hatch one end stated is welded on girder steel, and mixing of connect with concrete slab is poured above the first inside cavities
Concrete board；The open at one end of second cavity is welded on middle bridge body.
The transverse slat arranged in transverse direction is provided in further first cavity；The direction across bridge of the transverse slat
Two sides are separately fixed on the side plate of steel shell two sides, and transverse slat end of bridge body in is fixed on the bearing plate of end, transverse slat, position
What the steel shell top plate above transverse slat and end bearing plate between the two were interconnected to form concrete slab pours cavity.
Further it is located to pour and is provided with more shearings on chamber intracorporal steel shell top plate lower end surface and end bearing plate side
Nail.
Further described pouring is provided with muti-piece steel cell compartment lateral stiffening plate in cavity and steel cell compartment indulges web；It is described
Steel cell compartment lateral stiffening plate and steel cell compartment indulge web be crossed-over, upper and lower ends are separately fixed at the top of the first cavity
On plate lower end surface and the upper surface of transverse slat.
The further steel cell compartment, which is indulged, to be offered on web and steel cell compartment lateral stiffening plate convenient for concrete flowing
Through-hole.
The further concrete slab is that direction, from the open end of the first cavity to bearing plate is held, it is thick along bridge
Spend the armored concrete plate structure being gradually reduced.
The bearing plate being arranged in a vertical direction is provided in the further steel shell；The bearing plate and end pressure-bearing
The suitable bridge in plate edge to direction arranged for interval in the first cavity, put more energy by the vertical web that muti-piece is provided between bearing plate and end bearing plate
Plate；The muti-piece indulges web stiffener arranged for interval along the vertical direction, vertical web stiffener along bridge to both ends fix respectively
On adjacent bearing plate and end bearing plate, direction across bridge two sides are separately fixed on the side plate of steel shell two sides.
The T rib that muti-piece end is fixed on the bearing plate of end, muti-piece T rib edge are provided in further second cavity
Direction across bridge direction arranged for interval is in the second cavity；The T rib upper end is welded on the top plate of the second cavity, and T rib is along suitable
The vertical plate-like structure that bridge is gradually reduced to direction from end bearing plate to its height of the open end of the second cavity.
Steel shell is divided into two separate chambers of equal length by the centre that the further end bearing plate is located at steel shell
Body.
Advantages of the present invention has: 1, by end bay beam body set lower part girder steel top concrete slab, it can be significantly
The difficulty of construction for reducing end bay beam body, the thickness by adjusting concrete slab can adapt to the middle bridge body of different spans,
The weight bearing of end bay zero or small weight bearing can be achieved, solve the problems, such as the anti-negative force of end bay fulcrum；
2, end bay beam body uses steel and concrete structure that cable-stayed bridge end bay ratio is made to compare traditional cable-stayed bridge end bay ratio and greatly shortens, side
Across than foreshortening between 0.3~0.4, so that the adaptation range of this bridge type of cable-stayed bridge is wider；
3, end bay uses steel reinforced concrete bondbeam, has given full play to the advantage of two kinds of materials of steel and concrete, reasonable stress, bridge
Face local stiffness and girder overall stiffness can increase substantially；
4, end bay uses steel reinforced concrete bondbeam, reduces main bridge steel amount, bridge economic can be more excellent.
The end bay beam body that the present invention is combined by steel reinforced concrete solves the problems, such as the anti-negative force of end bay fulcrum, by conjunction with steel reinforced concrete
Beam cooperation, can be widely used in the suspension cable bridge of various spans, and the end bay beam body constructing operation that steel reinforced concrete combines is simple,
The difficulty of construction of end bay beam body is reduced, there is great promotional value.
Detailed description of the invention
Fig. 1: girder construction arrangement schematic diagram of the invention；
Fig. 2: the cross-sectional configuration schematic diagram of end bay beam body of the invention；
Fig. 3: the structural schematic diagram of steel reinforced concrete bondbeam of the invention；
Fig. 4: the web arragement construction schematic diagram in toughened internal stress of the invention；
Wherein: 1-middle bridge body；2-concrete slabs；3-girder steels；4-end bearing plates；5-the first cavity；6—
Second cavity；7-concrete slabs；8-transverse slats；9-WELDING STUDSs；10-steel cell compartments indulge web；11-steel cell compartment lateral stiffening plates；
12-through-holes；13-bearing plates；14-vertical web stiffeners；15-T ribs；16-shear connectors.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
If the mixing beam body of Fig. 1~4, a kind of hybrid beam for cable-stayed bridge, the present embodiment is mainly used for cable-stayed bridge, such as scheme
Shown in 1, including in being located at across middle bridge body 1, positioned at the end bay beam body of end bay, and the steel reinforced concrete bondbeam of both connections, wherein
Middle bridge body 1 is steel box girder.
The end bay beam body of the present embodiment is steel and concrete structure, including concrete slab 2 and is located at the lower section of concrete slab 2
The girder steel 3 for being used to support concrete slab 2, girder steel 3 be box-beam structure, by the way that end bay beam body is changed into steel and concrete structure,
First is that improve structure overall stiffness, second is that end bay length is effectively shortened, convenient for the arrangement of entire beam body.
The steel reinforced concrete bondbeam of the present embodiment includes the steel shell of a both ends open, and as shown in figs. 34, steel shell is along bridge to two
The hollow box body structure of end opening is provided with bearing plate 13 in steel shell, and bearing plate 13 is the riser being arranged in a vertical direction, pressure-bearing
The upper and lower ends of plate 13 are separately fixed on the top plate and bottom plate of steel shell, and both ends are fixed on the two sides side plate of steel shell, bearing plate
13 for enhancing the structural strength of entire first cavity 5.
Steel shell middle is provided with one piece of end bearing plate 4, and end bearing plate 4 is identical as the structure of bearing plate 13, holds bearing plate 4
It is fixed on steel shell inner side end and steel shell inner space is divided into first cavity 5 and opening direction of the opening towards end bay beam body
Steel shell is divided into two separate chambers of equal length by the second cavity 6 of middle bridge body 1, the centre that end bearing plate 4 is located at steel shell
Body, 5 open at one end of the first cavity are welded on girder steel 3, and 5 inside front of the first cavity has been poured to be connect with concrete slab 2
Concrete slab 7, the open at one end of the second cavity 6 is welded on middle bridge body 1.
For the ease of pouring out concrete slab 7 in the first cavity 5, the present embodiment is provided in the first cavity 5 along cross
The transverse slat 8 arranged to direction, the direction across bridge two sides of transverse slat 8 are separately fixed on the side plate of steel shell two sides, the bridge in of transverse slat 8
The end of body 1 is fixed on the bearing plate 4 of end, transverse slat 8, the steel shell top plate above transverse slat 8 and end pressure-bearing between the two
What plate 4 was interconnected to form concrete slab 7 pours cavity.When actually pouring, there are gap on the top plate of steel shell, the coagulation that pours
Soil pours in cavity from being flowed into gap, is connected as one with the concrete slab 2 of end bay beam body, the coagulation of the present embodiment
Native plate 7 is the transition structure for connecting concrete slab 2 and steel box girder bridge panel, and concrete slab 7 is along suitable bridge to direction from the
The armored concrete plate structure that the open end of one cavity 5 to end its thickness of bearing plate 4 is gradually reduced.
Muti-piece steel cell compartment lateral stiffening plate 11 and the vertical web 10 of steel cell compartment are provided in cavity in addition, pouring, steel cell compartment is horizontal
It indulges web 10 to stiffener 11 and steel cell compartment to be crossed-over, upper and lower ends are separately fixed under the top plate of the first cavity 5
(upper end of bearing plate 13 is provided with the flange plate of one piece of transverse direction, steel cell compartment lateral stiffening plate 11 and steel lattice for end face and bearing plate 13
Room indulge web 10 be fixed on flange plate) upper end.Steel cell compartment lateral stiffening plate 11 and steel cell compartment are indulged 10 interlaced arrangement of web and are poured
It builds in forming reinforced concrete structure in concrete slab 7, the intensity of concrete slab 7 can be greatly enhanced.Meanwhile positioned at pouring
More WELDING STUDSs 9 are provided on chamber intracorporal steel shell top plate lower end surface and end 4 side of bearing plate, are also equipped in concrete slab 7
More shear connectors 16 can enhance steel shell, transverse slat 8 and end bearing plate 4 and concrete by WELDING STUDS 9 as shown in figs. 34
Bonding strength, shear connector 16 can enhance the structural strength of concrete slab 7, make bondbeam and the bonding strength of end bay beam body more
It is high.
Adequately to flow convenient for concrete pouring cavity, fill to each corner, steel cell compartment indulges 10 He of web
The through-hole 12 convenient for concrete flowing is offered on steel cell compartment lateral stiffening plate 11.
The present embodiment is provided with the vertical web stiffener 14 of muti-piece between bearing plate 13 and end bearing plate 4, and muti-piece indulges abdomen
The arranged for interval along the vertical direction of plate stiffener 14, vertical web stiffener 14 along bridge to both ends be separately fixed at bearing plate 13 and end
On bearing plate 4, the two sides of direction across bridge are separately fixed on the side plate of steel shell two sides.Vertical web stiffener 14 can enhance whole knot
The structural strength of structure beam.
The end side of bridge body 1 in of bearing plate 4 is provided with T rib 15, T rib 15 is for enhancing entire cavity suitable
Intensity of the bridge on direction, for muti-piece T rib 15 along direction across bridge direction arranged for interval in the second cavity 6,15 upper end of T rib is welded on
On the top plate of two cavitys 6, T rib 15 is gradually to subtract along bridge to direction from its height of open end of end 4 to the second cavity 6 of bearing plate
Small vertical plate-like structure.
When practice of construction, in the good steel shell of factory-assembled and internal structure, then by steel shell handling by way of handling
To between middle bridge body 1 and end bay beam body, the both ends of steel shell are respectively welded to the girder steel 3 and middle bridge body 1 of end bay beam body
Then internal into steel shell from the gap above steel shell to pour casting concrete in cavity on end, concrete flows automatically actual arrival
It pours and is connect in cavity with concrete slab 2.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (9)
1. a kind of hybrid beam for cable-stayed bridge, including middle bridge body (1)；The middle bridge body (1) is steel box-girder, feature
It is: further includes end bay beam body；The end bay beam body includes concrete slab (2) and is located under concrete slab (2)
The girder steel (3) for being used to support concrete slab (2) of side, end bay beam body are provided in conjunction with steel reinforced concrete between middle bridge body (1)
Section；The toughened internal stress includes steel shell；The steel shell is the hollow box body structure along bridge to both ends open, is set in steel shell
It is equipped with the end bearing plate (4) being arranged in a vertical direction；The end bearing plate (4) is fixed on steel shell inner side end will be in steel shell
Portion space is divided into the second cavity (6) of opening bridge body (1) in towards the first cavity (5) of end bay beam body and opening；
Described the first cavity (5) open at one end is welded on girder steel (3), and the first cavity (5) inside front has poured and concrete bridge
The concrete slab (7) of panel (2) connection；The open at one end of second cavity (6) is welded on middle bridge body (1).
2. a kind of hybrid beam for cable-stayed bridge as described in claim 1, it is characterised in that: in first cavity (5)
It is provided with the transverse slat (8) arranged in transverse direction；The direction across bridge two sides of the transverse slat (8) are separately fixed at the side of steel shell two sides
On plate, transverse slat (8) end of bridge body (1) in is fixed on end bearing plate (4), and transverse slat (8) is located above transverse slat (8)
Steel shell top plate and end bearing plate (4) between the two be interconnected to form concrete slab (7) pour cavity.
3. a kind of hybrid beam for cable-stayed bridge as claimed in claim 2, it is characterised in that: positioned at pouring the intracorporal steel shell top of chamber
More WELDING STUDSs (9) are provided on plate lower end surface and end bearing plate (4) side.
4. a kind of hybrid beam for cable-stayed bridge described in claim 2 or 3, it is characterised in that: described pouring in cavity is set
It is equipped with muti-piece steel cell compartment lateral stiffening plate (11) and steel cell compartment indulges web (10)；The steel cell compartment lateral stiffening plate (11) and steel
Cell compartment is indulged web (10) and is crossed-over, and upper and lower ends are separately fixed at top plate lower end surface and the pressure-bearing of the first cavity (5)
The upper end of plate (13).
5. a kind of hybrid beam for cable-stayed bridge as claimed in claim 4, it is characterised in that: the steel cell compartment indulges web (10)
With offered on steel cell compartment lateral stiffening plate (11) convenient for concrete flowing through-hole (12).
6. a kind of hybrid beam for cable-stayed bridge described in claim 1, it is characterised in that: the concrete slab (7) is edge
Along bridge to direction from the open end of the first cavity (5) to the armored concrete plate knot for holding bearing plate (4) its thickness to be gradually reduced
Structure.
7. a kind of hybrid beam for cable-stayed bridge described in claim 1, it is characterised in that: be provided in the steel shell along perpendicular
Bearing plate (13) of the histogram to arrangement；The bearing plate (13) and end bearing plate (4) along bridge to direction arranged for interval in the
In one cavity (5), the vertical web stiffener (14) of muti-piece is provided between bearing plate (13) and end bearing plate (4)；Described is more
Block indulges web stiffener (14) arranged for interval along the vertical direction, vertical web stiffener (14) along bridge to both ends be separately fixed at phase
On adjacent bearing plate (13) and end bearing plate (4), direction across bridge two sides are separately fixed on the side plate of steel shell two sides.
8. a kind of hybrid beam for cable-stayed bridge described in claim 1 or 7, it is characterised in that: in second cavity (6)
It is provided with the T rib (15) that muti-piece end is fixed on end bearing plate (4), muti-piece T rib (15) exists along direction across bridge direction arranged for interval
In second cavity (6)；Described T rib (15) upper end is welded on the top plate of the second cavity (6), T rib (15) be along bridge to side
To the vertical plate-like structure being gradually reduced from end bearing plate (4) to its height of the open end of the second cavity (6).
9. a kind of hybrid beam for cable-stayed bridge described in claim 1, it is characterised in that: the end bearing plate (4) is located at
Steel shell is divided into two individual cavities of equal length by the centre of steel shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710116180.3A CN106812057B (en) | 2017-03-01 | 2017-03-01 | A kind of hybrid beam for cable-stayed bridge |
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| CN201710116180.3A CN106812057B (en) | 2017-03-01 | 2017-03-01 | A kind of hybrid beam for cable-stayed bridge |
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| CN106812057A CN106812057A (en) | 2017-06-09 |
| CN106812057B true CN106812057B (en) | 2019-02-01 |
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| CN107587417A (en) * | 2017-09-27 | 2018-01-16 | 中交公路长大桥建设国家工程研究中心有限公司 | Hybrid combining beam three stride continuous suspension bridge |
| CN108532442A (en) * | 2018-04-08 | 2018-09-14 | 北京城建道桥建设集团有限公司 | Cable-stayed bridge wide cut beam lattice main beam structure, gang form system and its construction method |
| CN111535145A (en) * | 2020-06-02 | 2020-08-14 | 北京市市政专业设计院股份公司 | Steel-concrete combined node structure |
| CN113174830B (en) * | 2021-04-30 | 2022-06-21 | 中铁大桥勘测设计院集团有限公司 | Method for adjusting internal force of concrete slab of cable-stayed bridge with steel truss combined beam |
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