CN208563082U - A kind of combination girder stayed-cable bridge with thickening end bay floorings - Google Patents
A kind of combination girder stayed-cable bridge with thickening end bay floorings Download PDFInfo
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- CN208563082U CN208563082U CN201821069713.3U CN201821069713U CN208563082U CN 208563082 U CN208563082 U CN 208563082U CN 201821069713 U CN201821069713 U CN 201821069713U CN 208563082 U CN208563082 U CN 208563082U
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Abstract
The utility model discloses a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, the device includes girder, two king-towers and bottom bracing structure, the girder include in across the end bay being located at two in described across front and rear sides, the floorings include middle bridge panel and end bay floorings, and the end bay floorings include the certain stable section of the changeover portion and thickness that gradually thicken from the middle bridge panel along its two side directions thickness；Uniform intervals are symmetrically arranged with multiple skew cables between two king-tower two sides and the girder, the bottom bracing structure includes two main pylon piers and multiple auxiliary bridge piers, two main pylon piers are respectively supported at below two king-towers, and multiple auxiliary bridge piers are evenly spaced on the lower section of the end bay described in two sides.The utility model across load and can effectively prevent abutment pier and auxiliary pier support negative reaction occur by increasing the bridge floor plate thickness of end bay bondbeam, in balance, improve the overall stiffness of bridge.
Description
Technical field
The utility model relates to technical field of bridge construction, and in particular to a kind of with the bondbeam for thickening end bay floorings
Cable-stayed bridge.
Background technique
Long-span cablestayed bridges girder form mainly has steel box-girder, bondbeam and steel truss girder etc. a variety of, and wherein bondbeam is due to bridge
Panel uses concrete structure, has avoided the endurance issues of steel box-girder paving steel bridge deck, and bondbeam is using shear connector
Girder steel and concrete slab are combined together a kind of cooperative composite structure, take full advantage of steel and concrete
The advantages of two kinds of materials, there is preferable economic benefit and social benefit, large span stayed-cable bridge girder is sent out using bondbeam form
Exhibition is rapid.
When cable-stayed bridge end bay in across girder form it is consistent when, under dead load bridge tower two sides there are unbalanced load,
Be presented as tower top in across offset, under live loading, tower top displacement and girder mid-span deflection be will increase, and abutment pier or auxiliary
Pier may come to nothing, therefore need opposite side to step into row ballast across load, to improve full-bridge rigidity, eliminate each pier support of end bay in balancing
Negative reaction.There are two types of traditional solutions: 1. end bays apply external ballast, by filling plain concrete or iron in steel construction
Sand concrete carries out ballast to cable-stayed bridge end bay, to eliminate negative reaction of support at abutment pier and auxiliary pier.Bondbeam girder steel, especially when
When using i-shape steel beam, there is no the spaces of casting concrete, and special designing, part pressure need to be carried out to ballast position girder steel
Loaded concrete is not involved in structure stress substantially, results in waste of resources；2. end bay uses beams of concrete, concrete box girder construction speed
Slowly, it is difficult to meet construction period, in hybrid beam end bay beams of concrete and in the junction across bondbeam be guarantee total just
The crucial place often to work, it is necessary to assure the power transmission of junction is smooth, safety durable, at present for junction research theory still
Incomplete, which becomes the key points and difficulties of control structure design.Beams of concrete and girder steel appearance are inconsistent, will affect complete
The ornamental value of bridge.
In conclusion both the above way from economy, construction complexity, the equal Shortcomings of landscape etc. it
Place, thus it is a kind of by increasing end bay concrete bridge deck plate thickness to implement the device of ballast to end bay it is necessary to propose.
Utility model content
In view of the deficiencies in the prior art, have the purpose of this utility model is to provide one kind and thicken end bay bridge floor
The combination girder stayed-cable bridge of plate, by increase end bay bondbeam bridge floor plate thickness, in it is even across the bridge floor plate thickness between end bay
Along transition, guarantee that end bay has biggish self weight intensity, avoid the external ballast of end bay, across load and can be effectively prevent in balance
There is negative reaction in abutment pier and auxiliary pier support, improve the overall stiffness of bridge.
To achieve the above objectives, the technical scheme adopted by the utility model is that:
Girder, for beam body upper berth be equipped with precast concrete floorings bondbeam, the girder include in across with two
It is located at the end bay in described across front and rear sides, the floorings include middle bridge panel and end bay floorings, the end bay
Floorings include the certain stable section of the changeover portion and thickness that gradually thicken from the middle bridge panel along its two side directions thickness；
Two king-towers, along vertical bridge to being arranged at intervals on the girder, between the king-tower two sides and the girder
Even interval is symmetrically arranged with multiple skew cables；
Bottom bracing structure comprising two main pylon piers and multiple auxiliary bridge piers, two main pylon piers are respectively supported at
Below two king-towers, multiple auxiliary bridge piers are evenly spaced on the lower section of the end bay described in two sides.
Based on the above technical solution, the girder using two king-towers as boundary be divided into across with two difference positions
The end bay across front and rear sides in described, it is described in across being located between two king-towers.
Based on the above technical solution, across in the same size with the cross section of end bay connected end in described.
Based on the above technical solution, the middle bridge panel with a thickness of 26cm, the end bay floorings are stablized
Section with a thickness of 59cm.
Based on the above technical solution, the girder is bondbeam comprising twice are along vertical bridge to two sides in left and right
The vertical bridge in steel stringer and multiple tracks edge symmetrically laid is more to the gooseneck being connected between steel stringer described in twice from front to back
Along the transverse bridge, the precast concrete floorings are paved on the top of the steel stringer and gooseneck to gooseneck described in road
Portion.
Based on the above technical solution, the precast concrete floorings by shear connector respectively with the steel
Stringer is connected with gooseneck.
Based on the above technical solution, the steel stringer is equipped with vertical splice plate close to the side of the gooseneck,
The vertical splice plate is connected by bolt with beam body.
Based on the above technical solution, the bottom plate of the steel stringer of the end bay section and the bottom plate of gooseneck are neat
Flat, two back plate connections are equipped with horizontally-spliced plate, and the horizontally-spliced plate is connected by bolt with two bottom plates.
Compared with the prior art, the advantages of the utility model are:
This has the combination girder stayed-cable bridge for thickening end bay floorings, by increasing the thickness of end bay composite beam bridge panel, makes
In across the even suitable transition of the bridge floor plate thickness between end bay, the floorings for thickening end bay section make end bay have biggish self weight collection
Degree steps into row ballast by floorings self weight opposite side, avoids the external ballast of end bay；After the self weight for increasing end bay floorings,
Be not only able in balance across girder weight, and abutment pier and auxiliary pier support can be effectively prevent negative reaction occur, improve bridge
The overall stiffness of beam reduces steel using amount, shortens the across footpath of cable-stayed bridge end bay, makes bridge span structure arrangement and structure entirety stress more
To be reasonable, and the consistency of full-bridge girder appearance is maintained, is all had in terms of economy, landscape and driving higher
Promotional value.
Detailed description of the invention
Fig. 1 be the utility model embodiment in have thicken end bay floorings combination girder stayed-cable bridge in across girder with
The transition schematic diagram of end bay girder floorings.
Fig. 2 is the main bridge arrangement with the combination girder stayed-cable bridge for thickening end bay floorings in the utility model embodiment
Figure.
Fig. 3 is that having in the combination girder stayed-cable bridge for thickening end bay floorings in the utility model embodiment is mixed across steel-
Solidifying soil bondbeam structural schematic diagram.
Fig. 4 is that the end bay steel-with the combination girder stayed-cable bridge for thickening end bay floorings in the utility model embodiment is mixed
Solidifying soil bondbeam structural schematic diagram.
In figure: 1- girder, across, bridge panel in 100- in 10-, 11- end bay, 110- end bay floorings, 12- changeover portion,
13- stable section, 14- suspension cable, 15- steel stringer, 16- gooseneck, the vertical splice plate of 17-, the horizontally-spliced plate of 18-, 2- king-tower, 3-
Bottom bracing structure, 30- main pylon pier, 31- assist bridge pier.
Specific embodiment
The embodiments of the present invention are described in further detail below in conjunction with attached drawing.
Shown in Figure 1, the utility model embodiment provides a kind of combination girder stayed-cable bridge with thickening end bay floorings,
Including girder 1, the girder 1 being supported on bottom bracing structure 3 is the bondbeam that beam body upper berth is equipped with precast concrete floorings,
Girder 1 include twice along indulge steel stringer 15 from bridge to the symmetrical laying in two sides and multiple tracks along indulging bridge to connecting from front to back
The gooseneck 16 being connected between twice steel stringer 15, steel stringer 15 and gooseneck 16 are connected as one, and form the structure master of girder 1
Body.Along the transverse bridge, precast concrete floorings are paved on the top of steel stringer 15 and gooseneck 16 to multiple tracks gooseneck 16.
Set on girder 1 there are two king-tower 2, two king-towers 2 along vertical bridge to being arranged at intervals on girder 1, between 2 two sides of king-tower and girder 1
Even interval is symmetrically arranged with multiple skew cables 14, and gravity of the suspension cable 14 by girder 1 generates two symmetrically to king-tower 2
Along the pulling force in the direction obliquely of suspension cable 14, according to the principle of force analysis, on symmetrical suspension cable 14 obliquely
The pulling force in direction can be analyzed to the power and a power straight down of the horizontal direction along respective side, and the level of the left and right sides
Power is cancelled out each other, and power straight down is then applied on bottom bracing structure 3, and bottom bracing structure 3 finally transmits these power
To ground.Wherein, it in order to mitigate the pulling force that every skew cables 14 are carried, is symmetrically arranged in the two sides of each king-tower 2 here
Multiple skew cables 14.Bottom bracing structure 3 includes two main pylon piers 30 and multiple auxiliary bridge piers 31, wherein two main pylon piers 30
It is respectively supported at two king-towers, 2 lower section, multiple auxiliary bridge piers 31 are evenly spaced in the two sides of main pylon pier 30.
It is shown in Figure 1, girder 1 with two king-towers 2 be boundary be divided into across 10 and two be located in across 10 front and back two
The end bay 11 of side, in across 10 and end bay 11 be all made of Steel-concrete Composite Beams.In be located between two king-towers 2 across 10, end bay 11
Then it is located at the outside of the king-tower 2 of the left and right sides, main pylon pier 30 is supported in below king-tower 2 in i.e. across on 10, auxiliary bridge pier 31
Then uniform intervals are supported on the lower section of end bay 11.Similarly, floorings include middle bridge panel 100 and end bay floorings 110, are located at
In across the floorings on 10 be middle bridge panel 100, the floorings on end bay 11 are then end bay floorings 110, prefabricated mixed
Solidifying soil floorings are paved on the top of steel stringer 15 and gooseneck 16, and horizontal with steel stringer 15 and steel respectively by shear connector
Beam 16 is connected and fixed.Floorings are direct receiving vehicle wheel loadsLoad-carrying members, it is directly contacted with vehicle, it in this way can be by vehicle
Power be transmitted to girder 1, and the component part of girder 1 can be constituted, and ensure that the whole stress effect of girder 1.In traditional knot
Close girder stayed-cable bridge in, middle bridge panel 100 is identical with the thickness of end bay floorings 110, when cable-stayed bridge end bay 11 in across 10
When 1 form of girder is consistent, bridge tower two sides can have unbalanced load under dead load, during king-tower 2 tower top in two sides is oriented partially across 10
The trend of shifting, under the action of mobile load, the displacement of 2 tower top of king-tower and 1 mid-span deflection of girder be will increase, and lead to abutment pier or auxiliary
Pier is likely to occur the danger come to nothing.In order to avoid cable-stayed bridge occurs above-mentioned negative reaction occurring since pontic stress is unreasonable
Phenomenon now sets fixed thickness for middle bridge panel 100, here in bridge panel 100 with a thickness of 26cm, end bay bridge floor
Plate 110 then includes the changeover portion 12 that therefrom bridge panel 100 gradually thickens along its two side directions thickness and the certain stabilization of thickness
Section 13, in it is in the same size with the cross section of 11 connected end of end bay across 10, in the thickness of the end bay floorings 110 on changeover portion 12 edge
It is gradually thickeied across 10 liang of side directions, when thickness increases to certain value, thickness can keep stable, the constant end bay floorings of thickness
110 be stable section 13, stable section 13 with a thickness of 59cm.
The thickness of end bay floorings 110 increases, and enables middle bridge panel 100 and 110 even transition of end bay floorings, thickeies
End bay floorings 110 make end bay 11 that there is biggish self weight intensity, end bay 11 is carried out by the self weights of end bay floorings 110
Ballast avoids the external ballast of end bay 11, be not only able to balance in across 10 1 weight of girder, and can effectively prevent abutment pier and
There is negative reaction in auxiliary pier support, ensure that the continuity of 1 section rigidity of girder, and Path of Force Transfer is clear, and structure is reasonable.Its
In, the thickness of the stable section 13 of middle bridge panel 100 and end bay floorings 110 can also be other suitable thickness, according to bridge
Depending on the overall structure of body itself.
Further, shown in Figure 1, it is equipped with vertical splice plate 17 close to the side of gooseneck 16 in steel stringer 15, is erected
It is connected to splice plate 17 by high-strength bolt with beam body, increases the stability of 1 structure of girder entirety；Due to the stress of end bay 11
Point is more and complicated, therefore the bottom plate of the steel stringer 15 of end bay 11 is flushed with the bottom plate of gooseneck 16, and two back plate connections are provided with
Horizontally-spliced plate 18, horizontally-spliced plate 18 are connected by bolt with two bottom plates, guarantee the bearing stability of end bay 11.
The utility model is not only limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model
Other various forms of products out, however, make any variation in its shape or structure, it is all to have and the utility model phase
Same or similar technical solution, within its protection scope.
Claims (8)
1. a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, characterized in that it comprises:
Girder (1), for beam body upper berth be equipped with precast concrete floorings bondbeam, the girder (1) include in across (10)
With two end bays being located at across (10) front and rear sides in described (11), the floorings include middle bridge panel (100) and
End bay floorings (110), the end bay floorings (110) include from the middle bridge panel (100) along its two side directions thickness
The certain stable section (13) of the changeover portion (12) and thickness gradually to thicken；
Two king-towers (2), along vertical bridge to being arranged at intervals on the girder (1), king-tower (2) two sides and the girder
(1) uniform intervals are symmetrically arranged with multiple skew cables (14) between；
Bottom bracing structure (3) comprising two main pylon piers (30) and multiple auxiliary bridge piers (31), two main pylon piers (30)
It is respectively supported at below two king-towers (2), multiple auxiliary bridge piers (31) are evenly spaced on the end bay described in two sides
(11) lower section.
2. as described in claim 1 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: the master
Beam (1) is the side being located at across (10) and two during boundary is divided into across (10) front and rear sides in described with two king-towers (2)
Across (11), it is described in be located between two king-towers (2) across (10).
3. as claimed in claim 2 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: in described
It is in the same size across (10) and the cross section of end bay (11) connected end.
4. as claimed in claim 3 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: in described
Bridge panel (100) with a thickness of 26cm, end bay floorings (110) stable section (13) with a thickness of 59cm.
5. as claimed in claim 4 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: the master
Beam (1) is bondbeam comprising twice indulge bridge to steel stringer (15) and the multiple tracks edge of the symmetrical laying in two sides along vertical bridge
To the gooseneck (16) being connected between steel stringer (15) described in twice from front to back, gooseneck (16) described in multiple tracks is along cross-bridges
To laying, the precast concrete floorings are paved on the top of the steel stringer (15) and gooseneck (16).
6. as claimed in claim 5 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: described pre-
Concrete slab processed is connect with the steel stringer (15) and gooseneck (16) respectively by shear connector.
7. as claimed in claim 6 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: the steel
Stringer (15) is equipped with vertical splice plate (17) close to the side of the gooseneck (16), and the vertical splice plate (17) passes through bolt
It is connected with beam body.
8. as claimed in claim 7 a kind of with the combination girder stayed-cable bridge for thickening end bay floorings, it is characterised in that: the side
The bottom plate of the steel stringer (15) across (11) section is flushed with the bottom plate of gooseneck (16), and two back plate connections are equipped with laterally
Splice plate (18), the horizontally-spliced plate (18) are connected by bolt with two bottom plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821069713.3U CN208563082U (en) | 2018-07-06 | 2018-07-06 | A kind of combination girder stayed-cable bridge with thickening end bay floorings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821069713.3U CN208563082U (en) | 2018-07-06 | 2018-07-06 | A kind of combination girder stayed-cable bridge with thickening end bay floorings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796196A (en) * | 2021-01-20 | 2021-05-14 | 中铁武汉勘察设计院有限公司 | Bridge structure suitable for asymmetric rotation and construction method thereof |
| CN113605214A (en) * | 2021-08-23 | 2021-11-05 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
| CN114277662A (en) * | 2021-12-28 | 2022-04-05 | 山东省公路桥梁建设集团有限公司 | Steel-concrete composite beam cable-stayed bridge |
-
2018
- 2018-07-06 CN CN201821069713.3U patent/CN208563082U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796196A (en) * | 2021-01-20 | 2021-05-14 | 中铁武汉勘察设计院有限公司 | Bridge structure suitable for asymmetric rotation and construction method thereof |
| CN113605214A (en) * | 2021-08-23 | 2021-11-05 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
| CN113605214B (en) * | 2021-08-23 | 2022-11-18 | 中铁大桥勘测设计院集团有限公司 | Widening main beam of longitudinal and transverse combination beam |
| CN114277662A (en) * | 2021-12-28 | 2022-04-05 | 山东省公路桥梁建设集团有限公司 | Steel-concrete composite beam cable-stayed bridge |
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