CN209602942U - A kind of compound seismic reinforcing structure of V-type bridge pier - Google Patents
A kind of compound seismic reinforcing structure of V-type bridge pier Download PDFInfo
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- CN209602942U CN209602942U CN201822132203.2U CN201822132203U CN209602942U CN 209602942 U CN209602942 U CN 209602942U CN 201822132203 U CN201822132203 U CN 201822132203U CN 209602942 U CN209602942 U CN 209602942U
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Abstract
The utility model relates to a kind of compound seismic reinforcing structures of V-type bridge pier, are set between girder and cushion cap, include at least V-type piece pier, are provided with steel plate in pier on the inside of V-type piece pier, and oblique steel plate and straight tube steel plate are provided with outside pier on the outside of V-type piece pier；Fill concrete in pier is provided in V-type piece pier and pier between steel plate, is tiltedly provided with the outer fill concrete of pier outside V-type piece pier and pier between steel plate and straight tube steel plate；Tiltedly two limbs of steel plate package V-type piece pier, straight tube steel plate are welded on the lower section of the oblique steel plate of outsourcing outside pier, and straight tube steel plate is weldingly connected with flange steel plate, and flange steel plate is arranged on cushion cap.The utility model keeps pier stiffness descending excessively, prevents structure from rigidity mutation occur by changing the descending variation in plastic hinge region section；By reducing pier bottom moment of flexure, the globality of enhancing structure to the method for drawing presstressed reinforcing steel；By the method for bar planting at the top of cushion cap bottom, girder, enhance the shear-carrying capacity of bridge pier plane of weakness.
Description
Technical field
The utility model relates to the reinforcement technique field of V-type bridge pier in bridge more particularly to a kind of compound antidetonations of V-type bridge pier
Ruggedized construction.
Background technique
V pier continuous rigid frame has the mechanical characteristic of continuous beam and oblique leg rigid-frame.The continuous beam of this bridge type and identical across footpath
Bridge is compared, and is shortened and is calculated across footpath, reduces deck-molding；Compared with pier consolidation continuous beam, reduce span centre and fulcrum location
Moment of flexure, while light structure is beautiful, is one of preferable urban road bridge type.Nearly two during the last ten years, occurs both at home and abroad some
Prestressed concrete soil type supporting bridge, including type support continuous beam and continuous rigid frame.
Earliest V pier continuous rigid frame bridge build up so far oneself had more than 30 years, this more than 30 years exactly Chinese transportation cause it is fast
In the period of speed development, as the volume of traffic increases, heavy goods vehicles increase, and the diseases such as cracking, corrosion occur in some bridges, need to carry out
It reinforces or repairs.Also, according to the bridge of earthquake resistant code design at that time, much it is impossible to meet existing Aseismic Design marks
It is quasi-.In Bridge Earthquake Resistance Design, bridge pier is critically important antidetonation component, needs to meet the bending bearing capacity under geological process
Design and the shear resistant capacity of capacity protection component check, and use continuous bridge or rigid structure of the V-type pier as substructure
Bridge, V-type pier piece are often more frivolous, it is necessary to it be made to meet the mark of existing Aseismic Design by the Design Method of Reinforcing of system
Standard, and the needs of reply highly seismic region Urban Bridge.
V-type pier construction is a kind of structural form for being held two semi-girders of left and right by pulling plate.It can be seen that from V-type pier construction
Outside in semi-girder root, pulling plate root upper limb spaning middle section is position easy to crack, and pulling plate closes semi-girder root stress very much
Key.The method that common reinforcement technique has affixing steel plate, external prestressing, pasting carbon fiber composite material material and enlarged cross section,
Wherein the method for enlarged cross section includes expanding two limb of V pier and pier shaft root section etc., these reinforcement means are not changing bridge
It is proposed in the case where structural system.
Rigid frame bridge bridge pier this for V-type pier is only capable of improving the deformability of part using the method for local stiffening, and
The raising of structural-load-carrying capacity also needs integral reinforcing.Since rigid frame bridge is multiple indeterminate structure, integral reinforcing will make bridge pier
Rigidity increases, and deformability reduces, it is possible to play reverse effect.Therefore, it when carrying out integral reinforcing, needs for bridge pier
Stress reasonably designed.
Utility model content
The purpose of this utility model is that in place of solving the above deficiencies in the existing technologies.
To achieve the above object, the utility model provides a kind of compound seismic reinforcing structure of V-type bridge pier, be set to girder with
Between cushion cap, V-type piece pier is included at least, steel plate in pier is provided on the inside of V-type piece pier, is provided on the outside of V-type piece pier
Oblique steel plate and straight tube steel plate outside pier；Fill concrete in pier is provided in V-type piece pier and pier between steel plate, outside V-type piece pier and pier
The outer fill concrete of pier is provided between oblique steel plate and straight tube steel plate；Tiltedly steel plate wraps up two limbs of V-type piece pier, straight tube steel outside pier
Plate is welded on the lower section of the oblique steel plate of outsourcing, and straight tube steel plate is weldingly connected with flange steel plate, and flange steel plate is arranged on cushion cap.
Preferably, it is connected between V-type piece pier and girder by beam bottom bar planting.
Preferably, piece pier bar planting is provided in pier between fill concrete and V-type piece pier.
Preferably, piece pier bar planting is provided between the outer fill concrete of pier and V-type piece pier.
Preferably, pier bottom bar planting is provided between the outer fill concrete of pier and cushion cap.
Preferably, presstressed reinforcing steel is provided in fill concrete in pier.
Preferably, straight tube steel plate is weldingly connected with flange steel plate, specifically includes: straight tube steel plate and flange steel plate pass through steel rib
It is welded to connect.
Preferably, flange steel plate is connect with cushion cap by high-strength bolt.
Preferably, the single setting 3-5 beam of presstressed reinforcing steel, vertically arranged 2-3 row.
Preferably, the height of straight tube steel plate is the pier stud height of 1/5-1/3.
The utility model has the beneficial effects that (1) makes pier stiffness by changing the descending variation in plastic hinge region section
It is descending excessive, prevent structure from rigidity mutation occur.(2) by reducing pier bottom moment of flexure, enhancing to the method for drawing presstressed reinforcing steel
The globality of structure.(3) by the method for bar planting at the top of cushion cap bottom, girder, enhance the shear-carrying capacity of bridge pier plane of weakness.
(4) Combination Design in the above manner optimizes the stress of bridge pier, improves the bearing capacity and shock resistance of bridge pier.
Detailed description of the invention
Fig. 1 is a kind of longitudinal sectional drawing of the compound seismic reinforcing structure of V-type bridge pier provided by the embodiment of the utility model；
Fig. 2 is a kind of transverse side figure of the compound seismic reinforcing structure of V-type bridge pier provided by the embodiment of the utility model；
Fig. 3 is a kind of knot pier bottom sectional view of the compound seismic reinforcing structure of V-type bridge pier provided by the embodiment of the utility model；
Fig. 4 is a kind of pier shaft sectional view of the compound seismic reinforcing structure of V-type bridge pier provided by the embodiment of the utility model；
Description of symbols:
1- cushion cap, 2- girder, 3-V matrix pier, oblique steel plate outside 4- pier, steel plate in 5- pier, 6- piece pier bar planting, 7- pier bottom are vertical
Muscle, 8- stirrup, 9- cushion cap bar planting, 10- beam bottom bar planting, 11- presstressed reinforcing steel, fill concrete in 12- pier are filled outside 13- pier mixed
Solidifying soil, 14- steel rib, 15- anchor bolt, 16 straight tube steel plates, 17 flange steel plates.
Specific embodiment
With reference to the accompanying drawings and examples, the technical solution of the utility model is described in further detail.
Picture 1-4, the utility model embodiment provides a kind of compound seismic reinforcing structure of V-type bridge pier, be set to girder 2 with
Between cushion cap 1, including V-type piece pier 3, the inside of V-type piece pier 3 is provided with steel plate 5 in pier, is provided in the outside of V-type piece pier 3
Oblique steel plate 4 and straight tube steel plate 16 outside pier；Fill concrete 12 in pier, V-type piece pier are provided in V-type piece pier 3 and pier between steel plate 5
3 and pier outside the outer fill concrete 13 of pier is tiltedly provided between steel plate 4 and straight tube steel plate 16；Tiltedly steel plate 4 wraps up V-type piece pier outside pier
3 two limbs, straight tube steel plate 16 are welded on the lower section of the oblique steel plate 4 of outsourcing, and straight tube steel plate 16 is weldingly connected with flange steel plate 17, flange
Steel plate 17 is arranged on cushion cap 1.
In one example, it is connected between V-type piece pier 3 and girder 2 by beam bottom bar planting 10.
In one example, piece pier bar planting 6 is provided in pier between fill concrete 12 and V-type piece pier 3.
In one example, piece pier bar planting 6 is provided between the outer fill concrete 13 of pier and V-type piece pier 3.
In one example, pier bottom bar planting 9 is provided between the outer fill concrete 13 of pier and cushion cap 1.
In one example, presstressed reinforcing steel 11 is provided in pier in fill concrete 12.
In one example, straight tube steel plate 16 and flange steel plate 17 are welded to connect by steel rib 14.
In one example, flange steel plate 17 is connect with cushion cap 1 by high-strength bolt 15.
In one example, the single setting 3-5 beam of presstressed reinforcing steel 11, vertically arranged 2-3 row.
In one example, the height of straight tube steel plate 16 is the pier stud height of 1/5-1/3, and in Fig. 1, pier stud height is h.
In one example, steel plate 5 in pier is inverted trapezoidal, the equivalent width of depth and V-type pier with a thickness of 1-2cm.
Trapezoidal two sides are parallel with V-type pier, and the length on each side of inverted trapezoidal guarantees that fill concrete is in pier with a thickness of 5-10cm.Table in steel plate
Face is quincunx laying reinforcing bar peg.
In one example, tiltedly steel plate 4 is by V-type pier entirety outsourcing outside straight tube steel plate 16 and pier, with a thickness of 1-2cm, length
It need to guarantee the outer fill concrete of pier with a thickness of 5-10cm, inner surface of steel plate is quincunx laying reinforcing bar peg.
In one example, steel rib 14 with a thickness of 2cm, above-mentioned anchor bolt selects the high-strength bolt of M20 or more.
In one example, the reinforcing bar of implantation, bar planting diameter are 10-16mm, and depth 10d, exposed 5-10d are simultaneously arranged curved
Hook, using bar planting gluing knot, reinforcing bar here includes piece pier bar planting 6, beam bottom bar planting 10, cushion cap bar planting 9.Bar planting specification and quantity
It is calculated and is determined according to shear resistance.
The utility model provides a kind of V-type bridge pier seismic hardening Combination Design and construction method:
Firstly, steel plate 5 in production pier, tiltedly steel plate 4 and straight tube steel plate 16, inner surface of steel plate weld quincuncial arrangement to pier outside
Reinforcing bar peg, to enhance the cementitiousness of steel plate and concrete.Steel plate 5 in pier are inverted trapezoidal, depth and V with a thickness of 1-2cm
The equivalent width of type pier.Inverted trapezoidal two sides are parallel with V-type pier, and the length on each side of inverted trapezoidal guarantees fill concrete thickness in pier
For 5-10cm.Oblique two limbs of 4 outsourcing V-type pier of steel plate outside pier, straight tube steel plate 16 below the oblique steel plate of outsourcing, outside pier tiltedly steel plate 4 with
Straight tube steel plate 16 welds, and the two is by entire V-type pier outsourcing, with a thickness of 1-2cm, length need to guarantee the outer fill concrete of pier with a thickness of
5-10cm.The height of straight tube steel plate 16 is the pier stud height of 1/5-1/3.Tiltedly steel plate 4 need to be in presstressed reinforcing steel outside steel plate 5 and pier in pier
11 corresponding position is boxed out and the construction window of casting concrete.
Then, to pier shaft concrete dabbing, bar planting piece pier bar planting 6, beam bottom bar planting 10, cushion cap bar planting 9.In concrete surface
Plant anchor glue anchor bar, bar planting horizontal space 20-30cm, vertical spacing 40-60cm are used after drilling, bar planting diameter is
Simultaneously crotch is arranged in 10-16mm, depth 10d, exposed 5-10d.
Then, steel plate 5 in pier is set up, is welded and fixed by cushion block or with bar planting.And punched in pier coping portion, place anchorage
And prestress pipe, intert presstressed reinforcing steel 11, installs plank sheathing in V pier two sides, pour fill concrete 12 in pier.In concrete
Tensioned prestressing bar 11 after intensity reaches 75%.Concrete strength is C40 or more self-compaction non-shrinkage concrete.Remove wooden model
Plate.
Finally, binding pier bottom indulges muscle 7 and stirrup 8, oblique steel plate 4 and straight tube steel plate 16 outside outer pier are welded.Straight tube steel plate 16 with
Flange steel plate 17 is welded to connect by steel rib 14, and flange steel plate 17 is connect with cushion cap 1 by high-strength bolt 15.It pours and is filled outside pier
Concrete 12, maintenance molding.Concrete strength is C40 or more self-compaction non-shrinkage concrete.
In one example, beam bottom bar planting 10 can plant in the lateral pulling plate of V-type pier.
In one example, the height difference in pier between 16 top of 5 bottom end of steel plate and straight tube steel plate is 1/10-1/5 times of pier stud
Highly, guarantee the linear change in section.
Above specific embodiment has carried out further the purpose of this utility model, technical scheme and beneficial effects
It is described in detail, it should be understood that the above is only the specific embodiments of the utility model, is not used to limit originally practical
Novel protection scope, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of compound seismic reinforcing structure of V-type bridge pier, is set between girder (2) and cushion cap (1), which is characterized in that at least
Including V-type piece pier (3), steel plate in pier (5) are provided on the inside of the V-type piece pier (3), in the outside of the V-type piece pier (3)
Tiltedly steel plate (4) and straight tube steel plate (16) are provided with outside pier；
Fill concrete in pier (12) are provided between steel plate (5) in the V-type piece pier (3) and the pier, the V-type piece pier
(3) and outside the pier the outer fill concrete (13) of pier is tiltedly provided between steel plate (4) and the straight tube steel plate (16)；
Tiltedly steel plate (4) wraps up two limbs of the V-type piece pier (3) outside the pier, and the straight tube steel plate (16) is welded on outside the pier
The lower section of oblique steel plate (4), the straight tube steel plate (16) are weldingly connected with flange steel plate (17), and flange steel plate (17) setting exists
On the cushion cap (1).
2. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that the V-type piece pier (3) with
It is connected between the girder (2) by beam bottom bar planting (10).
3. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that fill coagulation in the pier
Piece pier bar planting (6) is provided between native (12) and the V-type piece pier (3).
4. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that fill coagulation outside the pier
Piece pier bar planting (6) is provided between native (13) and the V-type piece pier (3).
5. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that fill coagulation outside the pier
Pier bottom bar planting (9) are provided between native (13) and the cushion cap (1).
6. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that fill coagulation in the pier
Presstressed reinforcing steel (11) are provided in native (12).
7. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that the straight tube steel plate (16)
It is weldingly connected, specifically includes with flange steel plate (17):
The straight tube steel plate (16) and flange steel plate (17) are welded to connect by steel rib (14).
8. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that the flange steel plate (17)
It is connect with cushion cap (1) by high-strength bolt (15).
9. the compound seismic reinforcing structure of V-type bridge pier according to claim 6, which is characterized in that the presstressed reinforcing steel (11)
Single setting 3-5 beam, vertically arranged 2-3 row.
10. the compound seismic reinforcing structure of V-type bridge pier according to claim 1, which is characterized in that the straight tube steel plate (16)
Height be 1/5-1/3 pier stud height.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132203.2U CN209602942U (en) | 2018-12-19 | 2018-12-19 | A kind of compound seismic reinforcing structure of V-type bridge pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132203.2U CN209602942U (en) | 2018-12-19 | 2018-12-19 | A kind of compound seismic reinforcing structure of V-type bridge pier |
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| CN209602942U true CN209602942U (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371823A (en) * | 2018-12-19 | 2019-02-22 | 北京市政路桥股份有限公司 | A kind of compound seismic reinforcing structure of V-type bridge pier |
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- 2018-12-19 CN CN201822132203.2U patent/CN209602942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371823A (en) * | 2018-12-19 | 2019-02-22 | 北京市政路桥股份有限公司 | A kind of compound seismic reinforcing structure of V-type bridge pier |
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