CN207143706U - A kind of steel box girder bridge once falls frame system - Google Patents
A kind of steel box girder bridge once falls frame system Download PDFInfo
- Publication number
- CN207143706U CN207143706U CN201721133206.7U CN201721133206U CN207143706U CN 207143706 U CN207143706 U CN 207143706U CN 201721133206 U CN201721133206 U CN 201721133206U CN 207143706 U CN207143706 U CN 207143706U
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- China
- Prior art keywords
- steel box
- girder
- temporary support
- temporary
- frame system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
It the utility model is related to a kind of steel box girder bridge and once fall frame system, including：Steel box-girder, bent cap, permanent bearing, temporary support, Temporary Piers and floorings.Permanent bearing is installed on bent cap；Set again on mid-span bent cap depending on temporary support, temporary support be highly computed；Temporary Piers are set at mid-span span centre；After the completion of steel box-girder on-site consolidation, welding, lift to temporary support and Temporary Piers；After the welding of steel box-girder mid-span is closed up, floorings construction is carried out on steel box-girder；Temporary support is finally released, steel box-girder forces falling to design attitude.Compared with prior art, it is described in the utility model once to fall the final internal force status of frame system and reach built a bridge at once state, and precompression is formed in floorings, whole process is simple to operate, and construction is quick, and system stress is clear and definite, structure is safe and reliable.
Description
Technical field
The utility model belongs to technical field of bridge engineering, it particularly relates to once fall frame system to a kind of steel box girder bridge
System.
Background technology
Steel-mixed composite beam bridge has the advantages that high capacity, ductility are good, rigidity is big, in highway, railway and urban interchange
In obtained relatively broad application.But common continuous composite beam bridge is due to intermediate support hogging moment area concrete slab tension
The backed off after random that ftractures works, and causes section rigidity to reduce, depression of bearing force.It is also easy to cause the steel in concrete after floorings cracking
Muscle corrosion, influence the durability of structure.Stiffener configures in concrete slab, and its bending resistance and rigidity are generally also bright
The aobvious compound section less than positive moment of span central point area.
Utility model content
In order to solve the above technical problems, the utility model, which provides a kind of steel box girder bridge, once falls frame system, it is applicable to prolong
Cracking that is slow or suppressing hogging moment area concrete slab, improves the rigidity of structure.
A kind of steel box girder bridge once falls frame system, including：Bent cap (1), permanent bearing (2), temporary support (3), Temporary Piers
(4), steel box-girder (5) and concrete slab (6)；Wherein：
The permanent bearing (2) is installed on the bent cap (1)；The temporary support (3) is arranged on bent cap (1)；Institute
The height for stating temporary support (3) is more than the height of the permanent bearing (2)；The Temporary Piers (4) are arranged at mid-span and height
It is concordant with the permanent bearing (2)；Steel box-girder (5) lifting is fixed on the temporary support (3) and Temporary Piers (4)；It is mixed
Native floorings (6) are coagulated to be arranged on the steel box-girder (5).
Preferably, the bent cap (1) is mid-span bent cap.
Preferably, the temporary support (3) is the prefabricated temporary support of meltability sulphur-bonded mortar.
Preferably, after steel box-girder (5) lifting is in place, Temporary Piers (4) are detachable.
Preferably, after concrete slab (6) completion, temporary support (3) is detachable.
Preferably, after the temporary support (3) and Temporary Piers (4) are removed, the steel box-girder (5) is supported in permanent bearing
(2) on.
When in use, can carry out in accordance with the following steps：(1) after the completion of bridge pier, Coping Construction, installed on bent cap permanent
Bearing, temporary support is set again on mid-span bent cap；(2) Temporary Piers, Temporary Piers height and permanent branch are set at mid-span span centre
Seat keeps concordant；(3) after the completion of steel box-girder on-site consolidation, welding, in correct lifting to temporary support, Temporary Piers；(4) steel box-girder
After installation is in place, Temporary Piers are removed；(5) steel box-girder mid-span carries out welding closure construction；(6) after the completion of closure construction, in steel case
Concrete slab pouring construction is carried out on beam；(7) temporary support is finally released, steel box-girder forces falling to design attitude.
Compared with prior art, it is described in the utility model once to fall the final internal force status of frame system and reach built a bridge at once shape
State, and precompression is formed in floorings, whole process is simple to operate, and construction is quick, and system stress is clear and definite, structure safely may be used
Lean on.
Brief description of the drawings
Fig. 1 is the initial scheme of installation of steel box-girder.
Fig. 2 is steel box girder cantilever view.
Fig. 3 is that steel box-girder closes up schematic diagram.
Fig. 4 is concrete slab construction schematic diagram.
Fig. 5 is structural system into bridge schematic diagram.
Fig. 6 is temporary support scheme of installation.
Description of reference numerals：
The permanent bearing of 1- bent caps, 2-, 3- temporary supports, 4- Temporary Piers, 5- steel box-girders, 6- concrete slabs.
Embodiment
To make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
Once fall frame system with a kind of steel box girder bridge of new offer to be described in detail.
A kind of steel box girder bridge once falls frame system, including：Bent cap 1, permanent bearing 2, temporary support 3, Temporary Piers 4, steel case
Beam 5 and concrete slab 6.
Permanent bearing 2 is installed on bent cap 1, temporary support 3 is set again on mid-span bent cap 1.Temporary support 3 can use meltability
Sulphur-bonded mortar is prefabricated to be formed.Depending on the height △ of temporary support 3 is computed and it is higher than permanent bearing 2.Temporary Piers 4 are arranged on mid-span
And height is concordant with permanent bearing 2.
After the completion of the on-site consolidation of steel box-girder 5, welding, correctly it is lifted on temporary support 3 and Temporary Piers 4.Steel box-girder 5 is installed
After in place, Temporary Piers 4 are removed.Concrete slab 6 is carried out after the completion of the welding of the mid-span of steel box-girder 5 is closed up, on steel box-girder 5 to construct.
After the completion of concrete slab 6 is constructed, temporary support 3 is released, steel box-girder 5 forces falling to design attitude；Steel box-girder 5 finally props up
Support on permanent bearing 2.
When in use, can carry out in accordance with the following steps：
(1) after the completion of bridge pier, Coping Construction, permanent bearing is installed on bent cap, interim branch is set again on mid-span bent cap
Seat, is shown in Fig. 6；
(2) the setting Temporary Piers at mid-span span centre, Temporary Piers height are concordant with the holding of permanent bearing；
(3) after the completion of steel box-girder on-site consolidation, welding, in correct lifting to temporary support, Temporary Piers, shown in Fig. 1；
(4) after steel box-girder installation is in place, Temporary Piers is removed, see Fig. 2；
(5) steel box-girder mid-span carries out welding closure construction, such as Fig. 3；
(6) after the completion of closure construction, concrete slab pouring construction, such as Fig. 4 are carried out on steel box-girder；
(7) temporary support is finally released, steel box-girder forces falling to see Fig. 5 to design attitude.
Compared with prior art, it is described in the utility model once to fall the final internal force status of frame system and reach built a bridge at once shape
State, and precompression is formed in floorings, whole process is simple to operate, and construction is quick, and system stress is clear and definite, structure safely may be used
Lean on.
It is understood that embodiment of above is merely to illustrate that principle of the present utility model and used exemplary
Embodiment, but the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, and these variations and modifications are also considered as this reality
With new protection domain.
Claims (6)
1. a kind of steel box girder bridge once falls frame system, including：Bent cap (1), permanent bearing (2), temporary support (3), Temporary Piers
(4), steel box-girder (5) and concrete slab (6)；It is characterized in that：
The permanent bearing (2) is installed on the bent cap (1)；The temporary support (3) is arranged on bent cap (1)；It is described to face
When bearing (3) height be more than the height of the permanent bearing (2)；The Temporary Piers (4) are arranged at mid-span and height and institute
It is concordant to state permanent bearing (2)；Steel box-girder (5) lifting is fixed on the temporary support (3) and Temporary Piers (4)；Concrete
Floorings (6) are arranged on the steel box-girder (5).
2. steel box girder bridge according to claim 1 once falls frame system, it is characterised in that：The bent cap (1) is mid-span lid
Beam.
3. steel box girder bridge according to claim 2 once falls frame system, it is characterised in that：The temporary support (3) is can
The prefabricated temporary support of fusibleness sulphur-bonded mortar.
4. steel box girder bridge according to claim 3 once falls frame system, it is characterised in that：Steel box-girder (5) lifting is just
Behind position, Temporary Piers (4) are detachable.
5. steel box girder bridge according to claim 4 once falls frame system, it is characterised in that：The concrete slab (6)
After completion, temporary support (3) is detachable.
6. steel box girder bridge according to claim 5 once falls frame system, it is characterised in that：The temporary support (3) and face
When pier (4) remove after, the steel box-girder (5) is supported on permanent bearing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133206.7U CN207143706U (en) | 2017-09-05 | 2017-09-05 | A kind of steel box girder bridge once falls frame system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721133206.7U CN207143706U (en) | 2017-09-05 | 2017-09-05 | A kind of steel box girder bridge once falls frame system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207143706U true CN207143706U (en) | 2018-03-27 |
Family
ID=61677561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721133206.7U Expired - Fee Related CN207143706U (en) | 2017-09-05 | 2017-09-05 | A kind of steel box girder bridge once falls frame system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207143706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055902A (en) * | 2019-05-23 | 2019-07-26 | 中铁二局集团有限公司 | Bridge construction method and its erection method on a kind of large-tonnage box beam normotopia bale handle |
-
2017
- 2017-09-05 CN CN201721133206.7U patent/CN207143706U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055902A (en) * | 2019-05-23 | 2019-07-26 | 中铁二局集团有限公司 | Bridge construction method and its erection method on a kind of large-tonnage box beam normotopia bale handle |
| US11391004B1 (en) | 2019-05-23 | 2022-07-19 | China Railway No. 2 Engineering Group Co. LTD. | Construction method for upright lifting of large-tonnage box girder to bridge, and erection method for large-tonnage box girder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180327 Termination date: 20180905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |