CN206680884U - A kind of high pier cast-in-site box girder with large span formwork-support - Google Patents
A kind of high pier cast-in-site box girder with large span formwork-support Download PDFInfo
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- CN206680884U CN206680884U CN201720502746.1U CN201720502746U CN206680884U CN 206680884 U CN206680884 U CN 206680884U CN 201720502746 U CN201720502746 U CN 201720502746U CN 206680884 U CN206680884 U CN 206680884U
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- steel
- steel pipe
- pipe support
- support post
- cast
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Abstract
The utility model discloses a kind of high pier cast-in-site box girder with large span formwork-support, it is characterized in that：Vertical outside steel pipe support post is propped up on the both sides pier cap of cast-in-situ box girder and integral inner side steel pipe support post is connected by horizontal steel tube with outside steel pipe support post；In inner side, the top of steel pipe support post utilizes horizontal spandrel girder supporting steel truss, at the top node of steel truss, and set respectively at the top of outside steel pipe support post and unload frame sandbox, transverse distribution erection Bailey beam is utilized on frame sandbox is unloaded, I-steel laying bamboo glue pattern plate is utilized in Bailey beam.The utility model rigidity is big, bearing capacity is strong, it solves the cast-in-place construction difficult problem of high pier under the conditions of complex topographical and geological condition, wide-span case beam using Hua Lunshi triangle web member system steel truss and Bailey beam combined support frame, effectively reduces construction cost and security risk.
Description
Technical field
The technical field of bridge superstructure construction is the utility model is related to, is more specifically that a kind of high pier large span shows
Pour box girder formwork support frame.
Background technology
With flourishing for China's economy, the construction of road and bridge is also maked rapid progress, and high pier, large span continuously emerges
Bridge structure type and topographic and geologic condition complicated and changeable.At present construction of cast-in-situ box-beam generally use raft support method or
Bear frame method construction, when bridge pier is high, bridge span is big and across soft foundation or precipitous valley, needed using conventional construction method
Handled ground or set temporary support to meet construction requirement.It sets up that the quantities of support is big, difficulty of construction is big, peace
Full blast danger is high, construction cost is high, construction speed is slow, or even indivedual extreme environment conventional construction methods can not meet that construction will
Ask.
The content of the invention
The utility model is to avoid the deficiency present in above-mentioned prior art, there is provided a kind of high pier large-span cast-in-situ case
Beam form support frame and its construction method, it is useful under geography geology environment complicated and changeable and carries out high pier, large-span cast-in-situ
Box girder construction, to reduce construction cost, reduce security risk grade, accelerating construction progress.
The utility model adopts the following technical scheme that to solve technical problem：
The utility model high pier cast-in-site box girder with large span formwork-support is structurally characterized in that：
Using the vertical two row's steel pipe support posts of cushion cap pre-embedded steel slab branch on the both sides pier cap of cast-in-situ box girder, a row is to lean on
Nearly bridge pier and the outside steel pipe support post being fixedly connected with bridge pier by pier shaft pre-embedded steel slab, another row are to be in outside steel pipe
The inner side of support column, and integral inner side steel pipe support post is connected by horizontal steel tube with the outside steel pipe support post；
Horizontal spandrel girder, the steel truss both ends branch of integral solder shaping are set at the top of the inner side steel pipe support post
Support makes the top boom of the steel truss be in the top surface of outside steel pipe support post in identical height on horizontal spandrel girder；
At the top node of the steel truss, and set respectively at the top of the outside steel pipe support post and unload frame
Sandbox, setting transverse distribution beam on frame sandbox is unloaded described, Bailey beam is set up on the transverse distribution beam, in the Bailey beam
Top I-steel is set, bamboo glue pattern plate is laid on the I-steel.
The design feature of the utility model high pier cast-in-site box girder with large span formwork-support is lain also in：The steel truss
For the Hua Lunshi triangular web member systems without montant, single steel truss is made up of top boom, lower boom and web member；On described
Chord member, lower boom and web member are Two bors d's oeuveres channel members, are welded between each rod member by gusset plate integral.
The design feature of the utility model high pier cast-in-site box girder with large span formwork-support is lain also in：The web member with it is upper
Angle between chord member, and angle between web member and lower boom is 45 ° -60 °.
Compared with the prior art, the utility model has the beneficial effect that：
The utility model high pier cast-in-site box girder with large span formwork-support is simple in construction, stress is clear and definite, rigidity is big, carrying
Ability is strong, and it solves complex topographical and geological condition bar using Hua Lunshi triangle web member system steel truss and Bailey beam combined support frame
Under part, highly reach 30 meters, single span reach 40 meters of the cast-in-place construction difficult problem of high pier wide-span case beam, effectively reduce construction
Cost and security risk.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 structural relation schematic diagrames between the medium-sized steel truss top surface of the utility model and transverse distribution beam；
Label in figure：1 cast-in-situ box girder, Bridge 2 pier cushion cap, 3 cushion cap pre-embedded steel slabs, 4 bridge piers, 5 pier shaft pre-embedded steel slabs, 6 connections
Channel-section steel, steel pipe support post on the outside of 7a, steel pipe support post on the inside of 7b, 8 horizontal steel tubes, 9 horizontal spandrel girders, 10 steel truss, 11 unload
Frame sandbox, 12 transverse distribution beams, 13 Bailey beams, 14 I-steel, 15 bamboo glue pattern plates, 16 top booms, 17 lower booms, 18 web members.
Embodiment
Referring to Fig. 1 and Fig. 2, the structure type of high pier cast-in-site box girder with large span formwork-support is in the present embodiment：
Cushion cap pre-embedded steel slab 3 is set on the both sides pier cap 2 of cast-in-situ box girder 1, set at the different height of bridge pier 4
Pier shaft pre-embedded steel slab 5, using the vertical two row's steel pipe support posts of cushion cap pre-embedded steel slab 3, a row be proximate to bridge pier 4 and with bridge pier 4
The outside steel pipe support post 7a being fixedly connected by pier shaft pre-embedded steel slab 5 with connection channel-section steel 6, another row are to be in outside steel pipe branch
Dagger 7a inner side, and integral inner side steel pipe support post 7b is connected by horizontal steel tube 8 with outside steel pipe support post 7a；
Using office both sides inner side steel pipe support post 7b as support, steel pipe support post 7b top sets horizontal load-bearing on the inside of two rows
Beam 9, the both ends of steel truss 10 of integral solder shaping are supported on horizontal spandrel girder 9, make the top boom 16 of steel truss 10 with
Outside steel pipe support post 7a top surface is in identical height；At the top node of steel truss 10, and in outside steel pipe
Support column 7a top is set respectively unloads frame sandbox 11, transverse distribution beam 12 is set on frame sandbox 11 is unloaded, in transverse distribution beam
Bailey beam 13 is set up on 12, I-steel 14 is set at the top of Bailey beam 13, bamboo glue pattern plate 15 is laid on I-steel 14.
In specific implementation, as shown in figure 1, steel truss 10 is the Hua Lunshi triangular web member systems without montant, it is single
Steel truss is made up of top boom 16, lower boom 17 and web member 18；Top boom 16, lower boom 17 and web member 18 are Two bors d's oeuveres channel-section steel
Component, welded by gusset plate between each rod member integral；Angle between web member 18 and top boom 16, and web member 18 is with
Angle between chord member 17 is 45 ° -60 °.
In specific implementation, adopted between outside steel pipe support post 7a and inner side steel pipe support post 7b and cushion cap pre-embedded steel slab 3
It is connected with；Between connection channel-section steel 6 and pier shaft pre-embedded steel slab 5 and outside steel pipe support post 7a, in horizontal steel tube 8 and outside
Between steel pipe support post 7a and inner side steel pipe support post 7b, unloading frame sandbox 11 and transverse distribution beam 12 and outside steel pipe support post
It is fixed welding between 7a, between horizontal spandrel girder 9 and inner side steel pipe support post 7b and steel truss 10；In Bailey beam 13
It is fixed between transverse distribution beam 12 using limiter；Carried out between Bailey beam 13 and I-steel 14 using U-bolt
It is fixed；Horizontal spandrel girder 9, transverse distribution beam 12 and Bailey beam 13 are to use Two bors d's oeuveres according to the requirement of bearing capacity or spell I-steel more
Or it is multigroup；Also according to bearing capacity size requirements, outside steel pipe support post 7a, inner side steel pipe support post 7b and steel truss 10
More or more Pin are provided with direction across bridge, and it is integral using the connection of channel-section steel bridging, to ensure lateral stability；Each pipe fitting or bar
Stiffener is welded at the connecting node of part, prevents steel member local buckling, to ensure stability under loading, inner side steel pipe support post 7b's
Center with a distance from the edge of pier cap 2 from being not less than 1m.
Claims (3)
1. a kind of high pier cast-in-site box girder with large span formwork-support, it is characterized in that：
Propped up on the both sides pier cap (2) of cast-in-situ box girder (1) using cushion cap pre-embedded steel slab (3) and found two row's steel pipe support posts, one
Row is proximate to bridge pier (4) and the outside steel pipe support post (7a) being fixedly connected with bridge pier (4) by pier shaft pre-embedded steel slab (5),
Another row is the inner side for being in outside steel pipe support post (7a), and passes through horizontal steel tube with the outside steel pipe support post (7a)
(8) integral inner side steel pipe support post (7b) is connected；
Horizontal spandrel girder (9), the steel truss of integral solder shaping are set at the top of the inner side steel pipe support post (7b)
(10) both ends are supported on horizontal spandrel girder (9), make the top boom and outside steel pipe support post (7a) of the steel truss (10)
Top surface be in identical height；
Set respectively at the top node of the steel truss (10), and at the top of the outside steel pipe support post (7a)
Frame sandbox (11) is unloaded, transverse distribution beam (12) is set in described unload, in transverse distribution beam (12) restocking on frame sandbox (11)
If Bailey beam (13), I-steel (14) is set at the top of the Bailey beam (13), bamboo glue pattern plate (15) is laid on the I-shaped
On steel (14).
2. high pier cast-in-site box girder with large span formwork-support according to claim 1, it is characterized in that：The steel truss
(10) it is the Hua Lunshi triangular web member systems without montant, single steel truss is by top boom (16), lower boom (17) and abdomen
Bar (18) forms；The top boom (16), lower boom (17) and web member (18) are Two bors d's oeuveres channel members, between each rod member
Welded by gusset plate integral.
3. high pier cast-in-site box girder with large span formwork-support according to claim 1, it is characterized in that：The web member (18)
Angle between the angle between top boom (16), and web member (18) and lower boom (17) is 45 ° -60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720502746.1U CN206680884U (en) | 2017-05-08 | 2017-05-08 | A kind of high pier cast-in-site box girder with large span formwork-support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720502746.1U CN206680884U (en) | 2017-05-08 | 2017-05-08 | A kind of high pier cast-in-site box girder with large span formwork-support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206680884U true CN206680884U (en) | 2017-11-28 |
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ID=60407363
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720502746.1U Expired - Fee Related CN206680884U (en) | 2017-05-08 | 2017-05-08 | A kind of high pier cast-in-site box girder with large span formwork-support |
Country Status (1)
| Country | Link |
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| CN (1) | CN206680884U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235234A (en) * | 2018-11-19 | 2019-01-18 | 江苏苏建路桥机械有限公司 | A kind of effective equalizer bar for adjusting beret slice steel bridge |
| CN111719436A (en) * | 2020-07-17 | 2020-09-29 | 温州市铁路与轨道交通投资集团有限公司 | Construction system and construction method for urban railway cast-in-place box girder support in soft foundation area |
| CN115976976A (en) * | 2023-03-17 | 2023-04-18 | 中化学交通建设集团有限公司 | Large-scale rapid assembling type model of midspan non-landing support and construction method thereof |
-
2017
- 2017-05-08 CN CN201720502746.1U patent/CN206680884U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235234A (en) * | 2018-11-19 | 2019-01-18 | 江苏苏建路桥机械有限公司 | A kind of effective equalizer bar for adjusting beret slice steel bridge |
| CN109235234B (en) * | 2018-11-19 | 2023-10-10 | 江苏苏建路桥机械有限公司 | Balance beam for effectively adjusting bailey piece steel bridge |
| CN111719436A (en) * | 2020-07-17 | 2020-09-29 | 温州市铁路与轨道交通投资集团有限公司 | Construction system and construction method for urban railway cast-in-place box girder support in soft foundation area |
| CN115976976A (en) * | 2023-03-17 | 2023-04-18 | 中化学交通建设集团有限公司 | Large-scale rapid assembling type model of midspan non-landing support and construction method thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |