CN105507159B - A kind of temporary support device suitable for large-span prestressed bent cap system transform - Google Patents
A kind of temporary support device suitable for large-span prestressed bent cap system transform Download PDFInfo
- Publication number
- CN105507159B CN105507159B CN201610083943.4A CN201610083943A CN105507159B CN 105507159 B CN105507159 B CN 105507159B CN 201610083943 A CN201610083943 A CN 201610083943A CN 105507159 B CN105507159 B CN 105507159B
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- base
- pin
- bent cap
- swivel base
- prestressed
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of temporary support device suitable for large-span prestressed bent cap system transform of the present invention，Belong to science of bridge building field，The present invention includes top swivel base and bottom pin base，The top swivel base coordinates the top of the semiellipse cylinder pin for being placed on bottom pin base by the downward semi-circular turn trough of the centrally disposed notch of its swivel base，Constitute the rotatable one bearing in top，And semiellipse cylinder pin is fixed between Prestressed Slab Beams and performance of concrete column confined perpendicular to bent cap trend by the carrier setting bolt of the upper base plate and bottom pin base of top swivel base respectively,Bent cap can be along prestressed tensioning direction，Rotated relative to bottom pier stud by semiellipsoid pin of the semi-circular turn trough of top swivel base along bottom pin base，Solve the not revolvable problem of existing bearing，Ensure that the prestressed effective applying of bent cap，Greatly reduce loss of prestress，Make bent cap stress definitely，Improve large-span prestressed Coping Construction efficiency and security and stability.
Description
Technical field
A kind of temporary support device suitable for large-span prestressed bent cap system transform of the present invention, belongs to science of bridge building neck
Domain.
Background technology
The queen post bent cap structure of prior art is because of its succinct moulding and maturation, easily construction technology is in highway
And widely use in urban road bridges.Used as the important supporting member in bridge bottom, it subjects the perseverance of superstructure to bent cap
Carry and girder passes to its mobile load effect, and these loads are passed to into bridge pier.But the structure for using at present is using lid
The processing mode that beam is consolidated with bottom pier stud.When with the increase of the distance between twin columns, during using Prestressed Slab Beams, this process
Mode unavoidably produces following detrimental effect：
(1) as bent cap is consolidated with pier stud, affected by pier stud, the loss of prestress of Prestressed Slab Beams span centre is larger, it is impossible to
Play its due effect.
(2) as bent cap is consolidated with pier stud, prestressed stretch-draw can produce large effect to bottom pier stud, cause pier stud to cut
Face increases, and causes the waste and moulding of material not good.
Particularly in urban elevated bridge construction, the overall Alignment Design of elevated bridge is all that global planning considers.
Local special road section occurs limited condition unavoidably, such as considers to reduce earth clearance, the expense of underground utilities migration, while taking into account
Existing road traffic function.For sections such as this intersections being limited in local condition, queen post bent cap structure design is proposed
High requirement.Beyond pier stud must being placed on road width using large-span prestressed bent cap, span is even more than 30 meters, therefore by covering
The adverse effect that beam and pier stud consolidation process mode are brought, it appears especially prominent, in addition have influence on Coping Construction safety and
Stability.
Obviously, bent cap and pier stud consolidation structure in prior art, have not adapted to the requirement of urban elevated bridge construction, special
It is not the requirement that can not meet large-span prestressed bent cap and pier stud connection construction, for this purpose, seeking to be applied to large span in construction
The on-fixed temporary support device of Prestressed Slab Beams system transform becomes the weight of the traffic elevated bridge construction concern of Development of Urban
Want problem.
The content of the invention
It is an object of the invention to provide a kind of temporary support device suitable for large-span prestressed bent cap system transform, leads to
The temporary support device that on-fixed connection is set between top Prestressed Slab Beams and bottom performance of concrete column confined is crossed, and bent cap is made pre-
Under the tensioning effect of stress, can rotate along prestressed tensioning direction, to solve, existing bearing is not revolvable important to ask
Topic, it is ensured that the prestressed effective applying of bent cap, so as to improve the security and stability and efficiency of construction of large-span prestressed bent cap.
The purpose of the present invention is achieved by the following technical solution：It is of the invention a kind of suitable for large-span prestressed bent cap
The temporary support device of system transform, including top swivel base and bottom pin base, the top swivel base is by upper base plate and swivel base
Composition, swivel base center is provided with the downward semi-circular turn trough of notch；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, and lower seat board is equipped with carrier setting bolt, and top swivel base passes through which partly
Round turn trough coordinates the top of the semiellipse cylinder pin for being placed on bottom pin base, constitutes the rotatable one in top
Seat, and semiellipse cylinder pin is made perpendicular to lid by the carrier setting bolt of the upper base plate and bottom pin base of top swivel base respectively
Beam trend is fixed between Prestressed Slab Beams and performance of concrete column confined.
The upper base plate of the top swivel base is poured and is mounted in pre-stressed concrete coping bottom surface.
The bottom of the carrier setting bolt installed in seat board under the bottom pin base pours and is fixed in performance of concrete column confined.
Semi-circular turn less than top swivel base of the top radius of curvature of the semiellipse cylinder pin of the bottom pin base
The radius of groove, the radius of curvature of bottom are more than the radius of the semi-circular turn trough of top swivel base.
The carrier setting bolt installed in seat board under the bottom pin base carries reinforcement crotch.
The innovation of the present invention and obvious technical effects：
A kind of temporary support device suitable for large-span prestressed bent cap system transform of the present invention, by semiellipsoid pin
Post is uniformly transmitted the performance of concrete column confined for giving bottom by the weight of bent cap, it is ensured that the contact with bottom pin of top swivel base
Face, improves Bearing Seat Force approach, after the age of concrete of bent cap and concrete strength satisfaction requirement, starts tensioning bent cap pre-
Stress, as swivel base is semicircle with the contact surface of pin, bent cap can be along prestressed tensioning direction, by top swivel base
Semi-circular turn trough along bottom pin base semiellipsoid pin relative to bottom pier stud rotate, solving existing bearing can not
The key problem of rotation, it is ensured that the prestressed effective applying of bent cap, greatly reduces loss of prestress, makes bent cap stress more
Clearly, large-span prestressed bent cap security and stability and efficiency of construction are improved；Simultaneously as bent cap can revolve during prestressed stretch-draw
Turn, the additional internal force produced by prestressed stretch-draw will not pass to bottom pier stud, so, it is not necessary to increase pier stud section chi
It is very little, both favorably had and arranged in the space of pier stud, saved construction material again.Additionally, after the completion of temporary support mission of the present invention, only needing
Cut off pre-buried carrier setting bolt, you can dismounting temporary support from bottom to top, then by concrete pier capital and Prestressed Slab Beams
The corresponding reserved steel bar welding in bottom, and the concrete in this region of formwork erection cast in situs, complete system transform.Therefore, the present invention faces
When stand apparatus innovative design, the construction of the large-span prestressed bent cap system to increasingly being lifted in urban elevated bridge construction
Using its technique effect is particularly significant.
Description of the drawings
Fig. 1 is schematic front view of the present invention；
Fig. 2 is the turn trough schematic diagram of top swivel base of the present invention；
Fig. 3 is pin base schematic diagram in bottom of the present invention.
Specific embodiment
Further illustrate how the present invention is implemented in conjunction with accompanying drawing：
A kind of temporary support device suitable for large-span prestressed bent cap system transform of the present invention, including top swivel base and
Bottom pin base, the top transposase 11 are made up of upper base plate 1-1 and transposase 11-2, and it is downward that-2 center of transposase 11 is provided with notch
Semi-circular turn trough 1-3；Bottom pin base 2 is made up of semiellipsoid pin 2-1 and lower seat board 2-2, and semiellipsoid pin 2-1 is solid
Surely the upper surface center of lower seat board 2-2 is connected to, lower seat board 2-2 is provided with carrier setting bolt 3, top transposase 11 by its bolt hole
Coordinate the upper end of the semiellipse cylinder pin 2-1 for being placed on bottom pin base 2 by its semi-circular turn trough 1-3, in composition
The rotatable one bearing in portion, and made by the carrier setting bolt 3 of the upper base plate 1-1 of top transposase 11 and bottom pin base 2 respectively
Semiellipse cylinder pin 2-1 is fixed between Prestressed Slab Beams G and performance of concrete column confined D perpendicular to the trend of bent cap G, and bent cap can be with
It is along prestressed tensioning direction, relative along the semiellipsoid pin of bottom pin base by the semi-circular turn trough of top swivel base
Rotate in bottom pier stud, as shown in Figure 1.
The upper base plate 1-1 of the top transposase 11 is poured and is mounted in pre-stressed concrete coping bottom surface.
3 bottom of carrier setting bolt installed in seat board 2-2 under the bottom pin base 2 pours and is fixed in performance of concrete column confined
It is interior.
Semicircle of the top radius of curvature of the semiellipse cylinder pin 2-1 of the bottom pin base 2 less than top transposase 11
The radius of type turn trough 1-3, radius of the bottom radius of curvature 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 the bottom pin base 2 carries reinforcement crotch.
Application of the present invention in large-span prestressed Coping Construction：
When bottom performance of concrete column confined is poured, 3 lower end of carrier setting bolt with reinforcement crotch is embedded in into performance of concrete column confined
In；After bottom performance of concrete column confined has been poured, carrier setting bolt 3 is just reliably fixed on the pier stud of bottom, then lower seat board 2-2 is led to
Cross prepared screw-bolt hole to be fastenedly connected on carrier setting bolt 3；After the completion of fixing Deng seat board 2-2 under bottom pin base 2, by molten
Weldering thoroughly is welded on semiellipse cylinder pin 2-1 on lower seat board 2-2；Then it is ellipse with half by the semi-circular turn trough 1-3 of transposase 11-2
Circle pin 2-1 coordinates, and transposase 11-2 is placed horizontally on pin 2-1, finally the upper of the top transposase 11 at bent cap bottom will be embedded in
Seat board 1-1 is welded on the upper surface of transposase 11-2, keeps semiellipse cylinder pin 2-1 to be fixed in pre- answering perpendicular to the trend of bent cap G
Between power bent cap G and performance of concrete column confined D, that is, complete to install.
After the completion of temporary support mission of the present invention, only pre-buried carrier setting bolt need to be cut off, you can dismounting from bottom to top is faced
When bearing, then by the corresponding reserved steel bar welding of concrete pier capital and Prestressed Slab Beams bottom, and this area of formwork erection cast in situs
The concrete in domain, completes system transform.
Claims (5)
1. a kind of temporary support device suitable for large-span prestressed bent cap system transform, it is characterised in that turn including top
Seat and bottom pin base, the top swivel base is made up of upper base plate and swivel base, and swivel base center is provided with downward semi-circular of notch
Turn trough；Bottom pin base is made up of semiellipsoid pin and lower seat board, and semiellipsoid pin is fixedly connected on the upper of lower seat board
Centre of surface, lower seat board are equipped with carrier setting bolt, top swivel base coordinated by its semi-circular turn trough be placed on bottom pin base it
The top of semiellipse cylinder pin, constitutes the rotatable one bearing in top, and respectively by the upper base plate of top swivel base with
The carrier setting bolt of portion's pin base makes semiellipse cylinder pin be fixed in Prestressed Slab Beams and concrete pier perpendicular to bent cap trend
Between post.
2. a kind of temporary support device suitable for large-span prestressed bent cap system transform according to claim 1, its
It is characterised by, the upper base plate of top swivel base is poured and is mounted in pre-stressed concrete coping bottom surface.
3. a kind of temporary support device suitable for large-span prestressed bent cap system transform according to claim 1, its
It is characterised by, the bottom of the carrier setting bolt installed in seat board under the pin base of bottom pours and is fixed in performance of concrete column confined.
4. a kind of temporary support device suitable for large-span prestressed bent cap system transform according to claim 1, its
It is characterised by, the top radius of curvature of the semiellipse cylinder pin of bottom pin base is less than the semi-circular turn trough of top swivel base
Radius, the radius of curvature of bottom are more than the radius of the semi-circular turn trough of top swivel base.
5. a kind of temporary support device suitable for large-span prestressed bent cap system transform according to claim 1, its
It is characterised by, the carrier setting bolt installed in seat board under the pin base of bottom carries reinforcement crotch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610083943.4A CN105507159B (en) | 2016-02-06 | 2016-02-06 | A kind of temporary support device suitable for large-span prestressed bent cap system transform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610083943.4A CN105507159B (en) | 2016-02-06 | 2016-02-06 | A kind of temporary support device suitable for large-span prestressed bent cap system transform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105507159A CN105507159A (en) | 2016-04-20 |
| CN105507159B true CN105507159B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610083943.4A Active CN105507159B (en) | 2016-02-06 | 2016-02-06 | A kind of temporary support device suitable for large-span prestressed bent cap system transform |
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| CN (1) | CN105507159B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951585A (en) * | 2016-06-20 | 2016-09-21 | 中山市公路钢结构制造有限公司 | Support structure of integrated steel-framed bridge |
| CN111733714A (en) * | 2020-06-01 | 2020-10-02 | 中铁第四勘察设计院集团有限公司 | Beam column node structure of overhead station and interval bridge |
Citations (7)
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|---|---|---|---|---|
| CN101613989A (en) * | 2009-07-16 | 2009-12-30 | 南京工业大学 | What be applied to assembling or prefabricated assembling beam bridge subtracts shock isolation method and structure |
| KR100948359B1 (en) * | 2009-06-24 | 2010-03-22 | 우경건설 주식회사 | The bridge upper structure lifting method for which bridge upper structure lifter which does the bridge shue function and this were used |
| CN102767134A (en) * | 2012-07-24 | 2012-11-07 | 成都市新筑路桥机械股份有限公司 | Large-angle assembly support |
| CN203065956U (en) * | 2013-01-15 | 2013-07-17 | 广州市市政工程设计研究院 | Transition structure between bent cap and pier stud |
| CN103205928A (en) * | 2013-04-24 | 2013-07-17 | 张保忠 | Anti-drawing curved surface rotatable support seat |
| CN204059207U (en) * | 2014-09-23 | 2014-12-31 | 中国水利水电第四工程局有限公司 | Bridge construction steel cylinder temporary support |
| CN205387670U (en) * | 2016-02-06 | 2016-07-20 | 武汉市政工程设计研究院有限责任公司 | Temporary support device suitable for conversion of large -span prestressing force bent cap system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6572071B1 (en) * | 2001-11-16 | 2003-06-03 | Chung-Shien Tsai | Shock eliminator |
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2016
- 2016-02-06 CN CN201610083943.4A patent/CN105507159B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100948359B1 (en) * | 2009-06-24 | 2010-03-22 | 우경건설 주식회사 | The bridge upper structure lifting method for which bridge upper structure lifter which does the bridge shue function and this were used |
| CN101613989A (en) * | 2009-07-16 | 2009-12-30 | 南京工业大学 | What be applied to assembling or prefabricated assembling beam bridge subtracts shock isolation method and structure |
| CN102767134A (en) * | 2012-07-24 | 2012-11-07 | 成都市新筑路桥机械股份有限公司 | Large-angle assembly support |
| CN203065956U (en) * | 2013-01-15 | 2013-07-17 | 广州市市政工程设计研究院 | Transition structure between bent cap and pier stud |
| CN103205928A (en) * | 2013-04-24 | 2013-07-17 | 张保忠 | Anti-drawing curved surface rotatable support seat |
| CN204059207U (en) * | 2014-09-23 | 2014-12-31 | 中国水利水电第四工程局有限公司 | Bridge construction steel cylinder temporary support |
| CN205387670U (en) * | 2016-02-06 | 2016-07-20 | 武汉市政工程设计研究院有限责任公司 | Temporary support device suitable for conversion of large -span prestressing force bent cap system |
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| CN105507159A (en) | 2016-04-20 |
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