CN205387670U - Temporary support device suitable for conversion of large -span prestressing force bent cap system - Google Patents
Temporary support device suitable for conversion of large -span prestressing force bent cap system Download PDFInfo
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- CN205387670U CN205387670U CN201620119137.3U CN201620119137U CN205387670U CN 205387670 U CN205387670 U CN 205387670U CN 201620119137 U CN201620119137 U CN 201620119137U CN 205387670 U CN205387670 U CN 205387670U
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- bent cap
- pin
- base
- temporary support
- support device
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Abstract
The utility model relates to a temporary support device suitable for conversion of large -span prestressing force bent cap system belongs to the bridge engineering field, the utility model discloses an upper portion swivel mount and lower part round pin toe seat, the upper portion swivel mount sets up the cooperation of the decurrent semicircle type turn trough of notch through its swivel mount center and places the upper portion at the half elliptic cylinder round pin post of lower part round pin toe seat, constitute the rotatable integrative support in upper portion, and make half elliptic cylinder round pin post perpendicular to bent cap move towards the rigid coupling between prestressing force bent cap and concrete pier column through the transposable support bolt of going up bedplate and lower part round pin toe seat in upper portion respectively, the bent cap can be along the stretch -draw direction of prestressing force, rotate for the lower part pier stud through the semiellipsoid round pin post of the transposable semicircle type turn trough in upper portion along lower part round pin toe seat, the problem of current support can not rotate is solved, effectively applying of bent cap prestressing force has been ensured, loss of prestress has significantly reduced, it is clearer and more definite to make the bent cap atress, the efficiency of the construction of large -span prestressing force bent cap is improved with safety and stability nature.
Description
Technical field
A kind of temporary support device suitable in large-span prestressed bent cap system transform of this utility model, belongs to science of bridge building field.
Background technology
The queen post bent cap structure of prior art widely uses in highway and urban road bridges because of its succinct moulding and maturation, easily construction technology.Bent cap is as the important supporting member in bridge bottom, and it subjects the dead load of superstructure and girder passes to its mobile load effect, and these loads are passed to bridge pier.But currently used structure all adopts the processing mode of bent cap and bottom pier stud consolidation.When increasing along with the distance between twin columns, when adopting Prestressed Slab Beams, this processing mode unavoidably produces following adverse influence:
(1), due to bent cap and pier stud consolidation, by the impact of pier stud, the loss of prestress of Prestressed Slab Beams span centre is bigger, it is impossible to play its due effect.
(2), due to bent cap and pier stud consolidation, bottom pier stud can be produced large effect by prestressed stretch-draw, causes pier stud cross section to increase, causes the waste of material and moulding not good.
Particularly in urban elevated bridge is built, the overall Alignment Design Dou Shi global planning of elevated bridge considers.At local special road section, limited condition occurs unavoidably, as considered the expense reducing earth clearance, underground utilities migrate, take into account existing road traffic function simultaneously.For this in sections such as the limited intersections of local condition, queen post bent cap structural design is proposed high requirement.Large-span prestressed bent cap must be adopted to be placed on by pier stud beyond the width of road, span even more than 30 meters, the adverse effect therefore brought by bent cap and pier stud consolidation process mode, it appears especially prominent, even have influence on the safety and stability of Coping Construction.
Obviously, bent cap and pier stud consolidation structure in prior art, do not adapt to the requirement that urban elevated bridge is built, particularly can not meet the requirement of large-span prestressed bent cap and pier stud connection construction, for this, the on-fixed temporary support device seeking to be applicable in construction large-span prestressed bent cap system transform becomes the major issue that the traffic elevated bridge construction of Development of Urban is paid close attention to.
Utility model content
The purpose of this utility model is to provide a kind of temporary support device suitable in large-span prestressed bent cap system transform, by arranging the temporary support device that on-fixed is connected between top Prestressed Slab Beams with bottom performance of concrete column confined, make bent cap under prestressed stretch-draw effect, can rotate along prestressed stretch-draw direction, to solve the not revolvable major issue of existing bearing, guarantee the prestressed effective applying of bent cap, thus improving security and stability and the efficiency of construction of large-span prestressed bent cap.
The purpose of this utility model is achieved by the following technical solution: a kind of temporary support device suitable in large-span prestressed bent cap system transform of this utility model, including top swivel base and bottom pin base, described top swivel base is made up of upper base plate and swivel base, and swivel base center is provided with the semi-circular turn trough that notch is downward；Bottom pin base is made up of semiellipsoid pin and lower seat board, semiellipsoid pin is fixedly connected on the upper surface center of lower seat board, lower seat board is equipped with carrier setting bolt, top swivel base coordinates the top of the semiellipse cylinder pin being placed on bottom pin base by its semi-circular turn trough, constitute top rotatable one bearing, and make semiellipse cylinder pin be perpendicular to bent cap trend respectively through the upper base plate of top swivel base and the carrier setting bolt of bottom pin base to be fixed between Prestressed Slab Beams and performance of concrete column confined.
The upper base plate of described top swivel base is built and is mounted in pre-stressed concrete coping bottom surface.
The bottom of the carrier setting bolt installed in seat board under the pin base of described bottom is built and is fixed in performance of concrete column confined.
The top radius of curvature of the semiellipse cylinder pin of described bottom pin base is less than the radius of the semi-circular turn trough of top swivel base, and the radius of curvature of bottom is more than the radius of the semi-circular turn trough of top swivel base.
The carrier setting bolt installed in seat board under the pin base of described bottom is with reinforcement crotch.
Innovation of the present utility model and obvious technical effects:
nullA kind of temporary support device suitable in large-span prestressed bent cap system transform of this utility model，By semiellipsoid pin, the weight of bent cap is transmitted uniformly the performance of concrete column confined giving bottom，Ensure that the contact surface of top swivel base and bottom pin，Improve Bearing Seat Force approach，After the age of concrete and the satisfied requirement of concrete strength of bent cap，Start stretch-draw bent cap prestressing force，Owing to the contact surface of swivel base Yu pin is semicircle，Bent cap can along prestressed stretch-draw direction，Rotated relative to bottom pier stud along the semiellipsoid pin of bottom pin base by the semi-circular turn trough of top swivel base，Solve existing bearing not revolvable key problem，Ensure that the prestressed effective applying of bent cap，Greatly reduce loss of prestress，Make bent cap stress definitely，Improve large-span prestressed bent cap security and stability and efficiency of construction；Simultaneously as bent cap can rotate during prestressed stretch-draw, prestressed stretch-draw the additional internal force produced, bottom pier stud will not be passed to, so, it is not necessary to increase pier stud sectional dimension, both favorably had and arranged in the space of pier stud, and saved again construction material.Additionally, after this utility model temporary support mission completes, only pre-buried carrier setting bolt need to be cut off, get final product dismounting temporary support from bottom to top, then by reserved steel bar welding corresponding at the bottom of concrete pier capital and Prestressed Slab Beams, and the concrete in this region of formwork erection cast in situs, complete system transform.Therefore, the innovative design of this utility model temporary support device, the construction application to the large-span prestressed bent cap system day by day promoted in urban elevated bridge construction, its technique effect is particularly significant.
Accompanying drawing explanation
Fig. 1 is this utility model schematic front view；
Fig. 2 is the turn trough schematic diagram of this utility model top swivel base；
Fig. 3 is this utility model bottom pin base schematic diagram.
Detailed description of the invention
Further illustrate how this utility model is implemented in conjunction with accompanying drawing:
A kind of temporary support device suitable in large-span prestressed bent cap system transform of this utility model, including top transposase 11 and bottom pin base 2, described top transposase 11 is made up of upper base plate 1-1 and transposase 11-2, and transposase 11-2 center is provided with the semi-circular turn trough 1-3 that notch is downward；nullBottom pin base 2 is made up of semiellipsoid pin 2-1 and lower seat board 2-2，Semiellipsoid pin 2-1 is fixedly connected on the upper surface center of lower seat board 2-2，Lower seat board 2-2 is provided with carrier setting bolt 3 by its bolt hole，Top transposase 11 coordinates the upper end of the semiellipse cylinder pin 2-1 being placed on bottom pin base 2 by its semi-circular turn trough 1-3，Constitute the rotatable one bearing in top，And make the semiellipse cylinder pin 2-1 trend being perpendicular to bent cap G be fixed between Prestressed Slab Beams G and performance of concrete column confined D respectively through the upper base plate 1-1 of top transposase 11 and the carrier setting bolt 3 of bottom pin base 2，Bent cap can along prestressed stretch-draw direction，Rotated relative to bottom pier stud along the semiellipsoid pin of bottom pin base by the semi-circular turn trough of top swivel base，As shown in Figure 1.
The upper base plate 1-1 of described top transposase 11 builds and is mounted in pre-stressed concrete coping bottom surface.
Carrier setting bolt 3 bottom installed in seat board 2-2 under described bottom pin base 2 is built and is fixed in performance of concrete column confined.
The top radius of curvature of the semiellipse cylinder pin 2-1 of described bottom pin base 2 radius less than the semi-circular turn trough 1-3 of top transposase 11, the bottom radius of curvature radius more than the semi-circular turn trough 1-3 of top transposase 11.
The carrier setting bolt 3 installed in seat board 2-2 under described bottom pin base 2 is with reinforcement crotch.
This utility model application in large-span prestressed Coping Construction:
When bottom performance of concrete column confined is built, carrier setting bolt 3 lower end with reinforcement crotch is embedded in performance of concrete column confined；After bottom performance of concrete column confined has been built, carrier setting bolt 3 is just fixed on the pier stud of bottom reliably, then is fastenedly connected on carrier setting bolt 3 by prepared screw-bolt hole by lower seat board 2-2；After under bottom pin base 2, seat board 2-2 has fixed, by penetration weld, semiellipse cylinder pin 2-1 is welded on lower seat board 2-2；The semi-circular turn trough 1-3 then passing through transposase 11-2 coordinates with semiellipsoid pin 2-1, transposase 11-2 is placed horizontally on pin 2-1, finally the upper base plate 1-1 of the top transposase 11 being embedded at the bottom of bent cap is welded on the upper surface of transposase 11-2, keep the semiellipse cylinder pin 2-1 trend being perpendicular to bent cap G to be fixed between Prestressed Slab Beams G and performance of concrete column confined D, namely complete to install.
After this utility model temporary support mission completes, only need to cut off pre-buried carrier setting bolt, can dismounting temporary support from bottom to top, then by reserved steel bar welding corresponding at the bottom of concrete pier capital and Prestressed Slab Beams, and the concrete in this region of formwork erection cast in situs, complete system transform.
Claims (5)
1. the temporary support device being applicable to large-span prestressed bent cap system transform, it is characterised in that including top swivel base and bottom pin base, described top swivel base is made up of upper base plate and swivel base, and swivel base center is provided with the semi-circular turn trough that notch is downward；Bottom pin base is made up of semiellipsoid pin and lower seat board, semiellipsoid pin is fixedly connected on the upper surface center of lower seat board, lower seat board is equipped with carrier setting bolt, top swivel base coordinates the top of the semiellipse cylinder pin being placed on bottom pin base by its semi-circular turn trough, constitute top rotatable one bearing, and make semiellipse cylinder pin be perpendicular to bent cap trend respectively through the upper base plate of top swivel base and the carrier setting bolt of bottom pin base to be fixed between Prestressed Slab Beams and performance of concrete column confined.
2. a kind of temporary support device suitable in large-span prestressed bent cap system transform according to claim 1, it is characterised in that the upper base plate of top swivel base is built and is mounted in pre-stressed concrete coping bottom surface.
3. a kind of temporary support device suitable in large-span prestressed bent cap system transform according to claim 1, it is characterised in that the bottom of the carrier setting bolt installed in seat board under the pin base of bottom is built and is fixed in performance of concrete column confined.
4. a kind of temporary support device suitable in large-span prestressed bent cap system transform according to claim 1, it is characterized in that, the top radius of curvature of the semiellipse cylinder pin of bottom pin base is less than the radius of the semi-circular turn trough of top swivel base, and the radius of curvature of bottom is more than the radius of the semi-circular turn trough of top swivel base.
5. a kind of temporary support device suitable in large-span prestressed bent cap system transform according to claim 1, it is characterised in that the carrier setting bolt installed in seat board under the pin base of bottom is with reinforcement crotch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620119137.3U CN205387670U (en) | 2016-02-06 | 2016-02-06 | Temporary support device suitable for conversion of large -span prestressing force bent cap system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620119137.3U CN205387670U (en) | 2016-02-06 | 2016-02-06 | Temporary support device suitable for conversion of large -span prestressing force bent cap system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205387670U true CN205387670U (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620119137.3U Withdrawn - After Issue CN205387670U (en) | 2016-02-06 | 2016-02-06 | Temporary support device suitable for conversion of large -span prestressing force bent cap system |
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|---|---|
| CN (1) | CN205387670U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507159A (en) * | 2016-02-06 | 2016-04-20 | 武汉市政工程设计研究院有限责任公司 | Temporary bearing device suitable for long-span prestressed cover beam system transformation |
-
2016
- 2016-02-06 CN CN201620119137.3U patent/CN205387670U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507159A (en) * | 2016-02-06 | 2016-04-20 | 武汉市政工程设计研究院有限责任公司 | Temporary bearing device suitable for long-span prestressed cover beam system transformation |
| CN105507159B (en) * | 2016-02-06 | 2017-03-29 | 武汉市政工程设计研究院有限责任公司 | A kind of temporary support device suitable for large-span prestressed bent cap system transform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160720 Effective date of abandoning: 20170329 |