CN207259935U - A kind of simple supported-to-continuous girder bridge built a bridge at once system - Google Patents
A kind of simple supported-to-continuous girder bridge built a bridge at once system Download PDFInfo
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- CN207259935U CN207259935U CN201720935102.1U CN201720935102U CN207259935U CN 207259935 U CN207259935 U CN 207259935U CN 201720935102 U CN201720935102 U CN 201720935102U CN 207259935 U CN207259935 U CN 207259935U
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- temporary support
- bridge
- common
- conversion
- precast beam
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Abstract
The utility model discloses a kind of simple supported-to-continuous girder bridge built a bridge at once system, including：Precast beam, bent cap, common temporary support, conversion temporary support, permanent bearing, Cast-in-Situ Segment and hogging moment prestressing tendon.Permanent bearing, common and conversion temporary support are installed on bent cap；Precast beam is installed on common, conversion temporary support；After cast-in-place section concrete reaches design strength between precast beam, tensioning hogging moment prestressing tendon；After releasing common, conversion temporary support successively, precast beam is supported on permanent bearing, completes Program for structural Transformation.Built a bridge at once system described in the utility model finally reaches structural internal force state once to fall frame bridge completion state, and system stress is clear and definite, structure is safe and reliable, and whole process is easy to operate, and construction is quick.
Description
Technical field
The utility model belongs to bridge structure technical field of construction, it particularly relates to arrive a kind of simple support-continuous girder
Bridge built a bridge at once system.
Background technology
Simply supported-to-continuous system beam bridge is easy for construction quick by precast assembly.Limited by work progress, a phase dead load
Under effect, span centre maximal bending moment and the simply supported beam of same across footpath are almost equal, also fail to improve into structure after bridge by system transform
The internal force status of system, simply in structure " bridge floor is continuous ", for Heavy Traffic load, " bridge floor is continuous " in structure
It is difficult to ensure that structural system has enough safety stocks.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of simple supported-to-continuous girder bridge built a bridge at once system,
It is applicable to improve simply supported-to-continuous system beam bridge Internal force of bridge under completion stage state.
A kind of simple supported-to-continuous girder bridge built a bridge at once system, including：Bent cap (1), permanent bearing (2), common interim branch
Seat (3), conversion temporary support (4), precast beam (5), sagging moment prestressing tendon (6), Cast-in-Situ Segment (7) and hogging moment prestressing tendon
(8)；
Permanent bearing (2), common temporary support (3) and conversion temporary support (4) are provided with the bent cap (1)；It is described
Precast beam (5) is installed on common temporary support (3) and conversion temporary support (4)；The interior tensioning of the precast beam (5) has sagging moment
Prestressing tendon (6)；The Cast-in-Situ Segment (7) is located between precast beam (5) and tensioning has hogging moment prestressing tendon (8).
Preferably, after the completion of hogging moment prestressing tendon (8) tensioning, common temporary support (3) is detachable.
Preferably, after the common temporary support (3) is removed, conversion temporary support (4) is detachable, after dismounting, in advance
Beam (5) processed is supported on permanent bearing (2).
Preferably, the common temporary support of thickness ratio (3) of the conversion temporary support (4) is big；The common temporary support
(3) thickness is consistent with permanent bearing (2).
Preferably, the common temporary support (3) and conversion temporary support (4) are the prefabricated bearings of meltability sulphur-bonded mortar.
Compared with prior art, built a bridge at once system described in the utility model finally makes structural internal force state reach once
Fall frame bridge completion state, system stress is clear and definite, structure is safe and reliable, and whole process is easy to operate, and construction is quick.
Brief description of the drawings
Fig. 1 is precast beam scheme of installation.
Fig. 2 is Cast-in-Situ Segment concreting schematic diagram.
Fig. 3 is to release common temporary support schematic diagram.
Fig. 4 is to release conversion temporary support schematic diagram.
Fig. 5 is conversion temporary support and permanent bearing relative position schematic diagram.
Fig. 6 is the final Internal force of bridge under completion stage figure of structural system.
Description of reference numerals：
The permanent bearing of 1- bent caps, 2-, the common temporary supports of 3-, 4- conversions temporary support, 5- precast beams, 6- sagging moments in advance should
Power beam, 7- Cast-in-Situ Segments, 8- hogging moment prestressing tendons.
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
It is described in detail with a kind of simple supported-to-continuous girder bridge built a bridge at once system of new offer.
A kind of simple supported-to-continuous girder bridge built a bridge at once system, including：Bent cap 1, permanent bearing 2, common temporary support 3,
Change temporary support 4, precast beam 5, sagging moment prestressing tendon 6, Cast-in-Situ Segment 7 and hogging moment prestressing tendon 8.
Installed on bent cap 1 permanent bearing 2, common 3 and conversion 4 temporary supports；Common 3 can with conversion 4 temporary supports use
Fusibleness sulphur-bonded mortar is prefabricated to be formed；It is big to change the common temporary support 3 of 4 thickness ratio of temporary support；Common 3 thickness of temporary support with forever
Long bearing (2) is consistent；Conversion 4 thickness of temporary support is calculated by designing.
Precast beam 5 is installed on common 3 and 4 temporary supports of conversion；Tensioning has sagging moment prestressing tendon 6 in precast beam 5.In advance
57 casting concretes of Cast-in-Situ Segment of beam processed, after 7 concrete of Cast-in-Situ Segment reaches design strength, tensioning hogging moment prestressing tendon 8.It is negative curved
After the completion of 6 tensioning of square prestressing tendon, common temporary support 3 is released.After common temporary support 3 releases, conversion temporary support is released
4.Change temporary support 4 release after, precast beam 5 is supported on permanent bearing 2, final structure system internal force status reach once into
Bridge like state.
When in use, can carry out in accordance with the following steps：
(1) permanent bearing, common temporary support and conversion temporary support are installed on bent cap, temporary support is by meltability sulphur
Sulphur mortar is prefabricated to be formed.
(2) precast beam is installed on common temporary support and conversion temporary support, sees Fig. 1, Fig. 5.
(3) cast-in-place section concrete between precast beam is poured.
(4) after cast-in-place section concrete reaches design strength, tensioning hogging moment prestressing tendon, is shown in Fig. 2.
(5) after the completion of the tensioning of hogging moment prestressing tendon, common temporary support is released, sees Fig. 3.
(6) after common temporary support releases, conversion temporary support is released successively, and precast beam is finally supported in permanent bearing
On, see Fig. 4.
Compared with prior art, built a bridge at once system described in the utility model finally makes structural internal force state reach once
Fall frame bridge completion state, system stress is clear and definite, structure is safe and reliable, and whole process is easy to operate, and construction is quick.
It is understood that embodiment of above is merely to illustrate that the principle of the utility model and uses 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, these variations and modifications are also considered as this reality
With new protection domain.
Claims (5)
- A kind of 1. simple supported-to-continuous girder bridge built a bridge at once system, it is characterised in that including：It is bent cap (1), permanent bearing (2), general Logical temporary support (3), conversion temporary support (4), precast beam (5), sagging moment prestressing tendon (6), Cast-in-Situ Segment (7) and hogging moment are pre- Stress beam (8)；Permanent bearing (2), common temporary support (3) and conversion temporary support (4) are provided with the bent cap (1)；It is described prefabricated Beam (5) is installed on common temporary support (3) and conversion temporary support (4)；The interior tensioning of the precast beam (5) has sagging moment in advance should Power beam (6)；The Cast-in-Situ Segment (7) is located between precast beam (5) and tensioning has hogging moment prestressing tendon (8).
- 2. simple supported-to-continuous girder bridge built a bridge at once system according to claim 1, it is characterised in that the hogging moment is pre- After the completion of stress beam (8) tensioning, common temporary support (3) is detachable.
- 3. simple supported-to-continuous girder bridge built a bridge at once system according to claim 2, it is characterised in that described common interim After bearing (3) is removed, conversion temporary support (4) is detachable, and after dismounting, precast beam (5) is supported on permanent bearing (2).
- 4. simple supported-to-continuous girder bridge built a bridge at once system according to claim 3, it is characterised in that the conversion is interim The common temporary support of thickness ratio (3) of bearing (4) is big；Common temporary support (3) thickness is consistent with permanent bearing (2).
- 5. simple supported-to-continuous girder bridge built a bridge at once system according to claim 4, it is characterised in that described common interim Bearing (3) and conversion temporary support (4) are the prefabricated bearings of meltability sulphur-bonded mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935102.1U CN207259935U (en) | 2017-07-28 | 2017-07-28 | A kind of simple supported-to-continuous girder bridge built a bridge at once system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935102.1U CN207259935U (en) | 2017-07-28 | 2017-07-28 | A kind of simple supported-to-continuous girder bridge built a bridge at once system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207259935U true CN207259935U (en) | 2018-04-20 |
Family
ID=61927461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720935102.1U Expired - Fee Related CN207259935U (en) | 2017-07-28 | 2017-07-28 | A kind of simple supported-to-continuous girder bridge built a bridge at once system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207259935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344322A (en) * | 2019-08-09 | 2019-10-18 | 河南省交通规划设计研究院股份有限公司 | A kind of temporary support and the method using support progress bridge conversion |
-
2017
- 2017-07-28 CN CN201720935102.1U patent/CN207259935U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344322A (en) * | 2019-08-09 | 2019-10-18 | 河南省交通规划设计研究院股份有限公司 | A kind of temporary support and the method using support progress bridge conversion |
| CN110344322B (en) * | 2019-08-09 | 2024-02-06 | 河南省交通规划设计研究院股份有限公司 | Temporary support and method for converting bridge structural system by adopting same |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 Termination date: 20190728 |