CN106351113A - Earthquake control system of high-speed railway bridge - Google Patents
Earthquake control system of high-speed railway bridge Download PDFInfo
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- CN106351113A CN106351113A CN201610744270.2A CN201610744270A CN106351113A CN 106351113 A CN106351113 A CN 106351113A CN 201610744270 A CN201610744270 A CN 201610744270A CN 106351113 A CN106351113 A CN 106351113A
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- Prior art keywords
- pier
- bridge
- shell wall
- steel plate
- sma
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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
- E01D19/00—Structural or constructional details of 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an earthquake control system of a high-speed railway bridge, comprising a prefabricating shell wall composed of high ductility cementitious composite (ECC)-steel plate to form a pier, wherein a vertical unbonded tendon is set in the pier. The top of the pier is connected with a main beam at the upper part by two movable supports; and a shape memory alloy (SMA) spiral spring is set between the top of the pier and the main beam. The SMA spiral spring is respectively connected with a steel sleeve and a square steel rod. The upper part of the steel sleeve is embedded into the bottom of the main beam; the lower part of the square steel rod is embedded into the top of the pier. The prefabricating shell wall becomes the template of inner concrete construction in the pier; the shearing strength and ductility energy consumption of the pier are provided; the crack damage under the earthquake can be reduced; and the residual displacement of the pier is reduced by the unbonded tendon. SMA spiral spring can provide the level rigidity under the normal operation as well as energy consumption under the earthquake and self-resetting ability of the main beam. The movable support can provide vertical rigidity and bearing capacity.
Description
Technical field
The present invention relates to the bridge in civil engineering, particularly to using prefabricated shell wall and sma helical spring
High-speed railway bridge system.
Background technology
At present, China Express Railway builds quick development, certainly will cause people to such major motor vehicle earthquake resistant engineering safety
Very big concern.Bridge pier and girder are the main supporting members of bridge structure, and the quake-resistant safety of bridge pier and girder is high-speed railway
The guarantee of bridge earthquake resistance safety.
For the anti-seismic problem of such major motor vehicle engineering, traditional bridge Ductility Design theory cannot meet
Its shockproof requirements.Main reason is that: (1) is that the driving ensureing high-speed railway requires, the lateral rigidity of bridge pier must be very big, this
Result in its section big, ripping circular saw is low, stirrup is difficult to operative constraint core concrete it is difficult to forming plastic hinge and consuming ground
Shake energy；(2) a large amount of high-speed railway bridges cross over the adverse circumstances such as rivers,lakes and seas, and corrosivity are strong, and endurance issues project, to bridge
After pier shake, the cracking destruction of concrete must strictly be limited；(3) it is smooth-going and the bullet train ensureing high speed railway track
Traffic safety is it is necessary to strictly be limited to residual deformation after the shake of bridge pier and girder；(4) high-speed railway is major motor vehicle work
Journey, is closed to traffic after shake, will result in huge economic loss and social influence, examines after the shake that therefore bridge damnification destroys
Look into, repair and must be rapidly completed, this requires bridge pier concrete cracking equivalent damage is strictly controlled.
Content of the invention
The present invention is directed to above-mentioned technical problem, proposes a kind of high-speed railway bridge seismic Damage control system.By ecc- steel
The template that the prefabricated shell wall of plate is constructed as bridge pier inner concrete, and configure vertical unbonded prestressing tendon in bridge pier.ecc-
The prefabricated shell wall of steel plate will increase ductility and the energy dissipation capacity of bridge pier, and suppress to shake the cracking destruction of rear abutment, prestressing without bondn
Muscle, by residual displacement after the shake of reduction bridge pier, realizes the seismic Damage Control Design of bridge pier.High-speed railway bridge seismic Damage control
System processed will arrange sma helical spring between bridge pier and girder, limit the shake of girder using the self-resetting capability of sma helical spring
Residual deformation afterwards.Abovementioned technology will fully ensure that the quake-resistant safety of high-speed railway bridge, in major motor vehicle engineering construction
There is wide application prospect.
For reaching object above, it is achieved through the following technical solutions:
A kind of high-speed railway bridge seismic Damage control system it is characterised in that: include, pier footing, by ecc and steel plate
The prefabricated shell wall of composition.The vertical muscle of arrangement casting concrete inside prefabricated shell wall, along the vertically arranged unbonded prestressing tendon of bridge pier.
Pier coping portion is arranged 2 movable bearing supports and is connected with girder.And 4 sma helical springs are set between pier coping portion and girder.
The prefabricated shell wall being made up of ecc and steel plate is arranged along pier high sublevel, is linked by seam.Seam is dentation, is easy to
The occlusion of the prefabricated shell wall of upper-lower section.
Unbonded prestressing tendon vertically passes through bridge pier, and, in basis, top anchor is in bridge pier top for bottom anchor.
Weld stud inside and outside steel plate is it is ensured that the collaborative work of steel plate and ecc, and the peg inside steel plate is deeply internal
Concrete in, to fully ensure that the collaborative work of prefabricated shell wall and internal armored concrete.
Sma helical spring is connected with steel bushing, square steel rod respectively.Steel bushing top embeds girder bottom, square steel rod bottom
Pier coping portion is embedded by pre-embedded steel slab and anchor bar.
Ecc be a kind of by cement, sand, flyash, mix outward the high ductility cement-base composite material that pva fiber is made.ecc-
The prefabricated shell wall of steel plate can prefabrication, scene is connected by seam, and template when pouring as inner concrete.
Top girder is really connected with bottom bridge pier by 4 sma helical springs, and sma helical spring (11) is by NiTi
Marmem is made, and 4 sma helical springs are all arranged in the horizontal direction.Wherein 2 along vertical bridge to another 2 along horizontal stroke
Bridge is to arrangement.Sma helical spring is subjected only to horizontal force, does not vertically stress.
The present invention using technique scheme:
The prefabricated shell wall of 1.ecc- steel plate will be significantly greatly increased shearing strength and the tensility shock-resistant ability of bridge pier, improve the big shake of bridge pier
Collapse resistant capacity afterwards.
2., due to the anti-cracking ability that ecc is special, the prefabricated shell wall of ecc- steel plate will suppress the cracking destruction after bridge pier earthquake,
Improve bridge pier corrosion resistance and long-life quake-resistant safety.
The prefabricated shell wall of 3.ecc- steel plate can prefabrication, and template when scene pours as inner concrete, decrease
Working procedure, is easy to accelerating construction progress.
4. the unbonded prestressing tendon within bridge pier by less its shake after residual displacement it is ensured that bullet train shake after drive a vehicle
Recoverability after the shake of safety and high-speed railway bridge.
5. by providing, train is normal to run required rigidity, sma spiral after shaking greatly to the sma helical spring between girder and bridge pier
Spring can automatically reset, and significantly mitigate residual deformation after the shake of girder, and sma helical spring can earthquake energy.
6. the movable bearing support between girder and bridge pier only provides vertical bearing capacity and rigidity, and level is to rigidity and intensity by sma
Helical spring provides, and relies on sma helical spring to automatically reset and energy dissipation capacity after realizing the shake of girder.Achieve high-speed railway
The Aseismic Design Theory of bridge " function separates ".
7., on the force-mechanism of bridge pier, due to interspacing in advance between steel plate and bridge pier bottom cushion cap, and ecc- steel plate is prefabricated
Shell wall does not provide bending strength along pier high sublevel, the therefore prefabricated shell wall of ecc- steel plate；Bridge pier bending resistance is mainly by prefabricated shell wall
Internal armored concrete provides.
Compared with conventional high rate railroad bridge, the present invention has 6 outstanding advantages, and the prefabricated shell wall of first ecc- steel plate will
Greatly reduce the cracking destruction of bridge pier, improve corrosion resistance and the long-life quake-resistant safety of bridge pier；Second, ecc- steel plate is prefabricated
Shell wall will improve shearing strength and the ductility energy dissipation capacity of bridge pier, improve the collapse resistant capacity of bridge pier；Third, ecc- steel plate is pre-
Shell wall processed can prefabrication, and the template as inner concrete site operation, working procedure, accelerating construction progress can be reduced；
Fourth, unbonded prestressing tendon will reduce the residual deformation after bridge pier shake it is ensured that the traffic safety of bullet train, and increased bridge
Recoverability after the shake of pier；Fifth, the self-resetting capability of sma helical spring will greatly reduce residual deformation after the shake of girder, protect
The ride comfort of card high-speed train track；Sixth, sma helical spring and movable bearing support achieve high-speed railway bridge is based on " function
The aseismatic design concept of separation ".Under normal circumstances, movable bearing support provides vertical strength and stiffness, and sma helical spring provides level
To strength and stiffness.And lower sma helical spring offer energy dissipation capacity and self-resetting capability are provided greatly.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description
The present invention totally 5 width accompanying drawing, wherein:
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is high-speed railway bridge pier schematic cross-section.
Fig. 3 is bridge pier and girder connecting portion detail drawing.
Fig. 4 is the sma helical spring detail drawing to arrangement for 4 levels.
In figure: 1, pier footing, 2, ecc, 3, steel plate, 4, peg, 5, vertical muscle, 6, concrete, 7, unbonded prestressing tendon,
8th, seam, 9, movable bearing support, 10, girder, 11, sma helical spring, 12, steel bushing, 13, square steel rod, 14, pre-embedded steel slab, 15,
Anchor bar.
Specific embodiment
A kind of high-speed railway bridge seismic Damage control system as shown in Figures 1 to 4, comprising: include, pier footing,
The prefabricated shell wall being made up of ecc and steel plate.Inside prefabricated shell wall, the vertical muscle of arrangement casting concrete, glue along the vertically arranged nothing of bridge pier
Knot presstressed reinforcing steel.Pier coping portion is arranged 2 movable bearing supports and is connected with girder.And 4 sma spirals are set between pier coping portion and girder
Spring.
The prefabricated shell wall being made up of ecc and steel plate is arranged along pier high sublevel, is linked by seam.Seam is dentation, is easy to
The occlusion of the prefabricated shell wall of upper-lower section.
Unbonded prestressing tendon vertically passes through bridge pier, and, in basis, top anchor is in bridge pier top for bottom anchor.
Weld stud inside and outside steel plate is it is ensured that the collaborative work of steel plate and ecc, and the peg inside steel plate is deeply internal
Concrete in, to fully ensure that the collaborative work of prefabricated shell wall and internal armored concrete.
Sma helical spring is connected with steel bushing, square steel rod respectively.Steel bushing top embeds girder bottom, square steel rod bottom
Pier coping portion is embedded by pre-embedded steel slab and anchor bar.
Ecc be a kind of by cement, sand, flyash, mix outward the high ductility cement-base composite material that pva fiber is made.ecc-
The prefabricated shell wall of steel plate can prefabrication, scene is connected by seam, and template when pouring as inner concrete.
Top girder is really connected with bottom bridge pier by 4 sma helical springs, and sma helical spring (11) is by NiTi
Marmem is made, and 4 sma helical springs are all arranged in the horizontal direction.Wherein 2 along vertical bridge to another 2 along horizontal stroke
Bridge is to arrangement.Sma helical spring is subjected only to horizontal force, does not vertically stress.
The present invention using technique scheme:
The prefabricated shell wall of 1.ecc- steel plate will be significantly greatly increased shearing strength and the tensility shock-resistant ability of bridge pier, improve the big shake of bridge pier
Collapse resistant capacity afterwards.
2., due to the anti-cracking ability that ecc is special, the prefabricated shell wall of ecc- steel plate will suppress the cracking destruction after bridge pier earthquake,
Improve bridge pier corrosion resistance and long-life quake-resistant safety.
The prefabricated shell wall of 3.ecc- steel plate can prefabrication, and template when scene pours as inner concrete, decrease
Working procedure, is easy to accelerating construction progress.
4. the unbonded prestressing tendon within bridge pier by less its shake after residual displacement it is ensured that bullet train shake after drive a vehicle
Recoverability after the shake of safety and high-speed railway bridge.
5. by providing, train is normal to run required rigidity, sma spiral after shaking greatly to the sma helical spring between girder and bridge pier
Spring can automatically reset, and significantly mitigate residual deformation after the shake of girder, and sma helical spring can earthquake energy.
6. the movable bearing support between girder and bridge pier only provides vertical bearing capacity and rigidity, and level is to rigidity and intensity by sma
Helical spring provides, and relies on sma helical spring to automatically reset and energy dissipation capacity after realizing the shake of girder.Achieve high-speed railway
The Aseismic Design Theory of bridge " function separates ".
7., on the force-mechanism of bridge pier, due to interspacing in advance between steel plate and bridge pier bottom cushion cap, and ecc- steel plate is prefabricated
Shell wall does not provide bending strength along pier high sublevel, the therefore prefabricated shell wall of ecc- steel plate；Bridge pier bending resistance is mainly by prefabricated shell wall
Internal armored concrete provides.
Compared with conventional high rate railroad bridge, the present invention has 6 outstanding advantages, and the prefabricated shell wall of first ecc- steel plate will
Greatly reduce the cracking destruction of bridge pier, improve corrosion resistance and the long-life quake-resistant safety of bridge pier；Second, ecc- steel plate is prefabricated
Shell wall will improve shearing strength and the ductility energy dissipation capacity of bridge pier, improve the collapse resistant capacity of bridge pier；Third, ecc- steel plate is pre-
Shell wall processed can prefabrication, and the template as inner concrete site operation, working procedure, accelerating construction progress can be reduced；
Fourth, unbonded prestressing tendon less bridge pier is shaken after residual deformation it is ensured that the traffic safety of bullet train, and increased bridge
Recoverability after the shake of pier；Fifth, the self-resetting capability of sma helical spring will greatly reduce residual deformation after the shake of girder, protect
The ride comfort of card high-speed train track；Sixth, sma helical spring and movable bearing support achieve high-speed railway bridge is based on " function
The aseismatic design concept of separation ".Under normal circumstances, movable bearing support provides vertical strength and stiffness, and sma helical spring provides level
To strength and stiffness.And lower sma helical spring offer energy dissipation capacity and self-resetting capability are provided greatly.
The above, be only presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, makes when the technology contents that available appeal discloses and a little change or be modified to
The Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the technical spirit pair of the present invention
Any simple modification made for any of the above embodiments, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (4)
1. a kind of high-speed railway bridge seismic Damage control system it is characterised in that: include pier footing (1), by high ductility water
The prefabricated shell wall that cement-based composite material ecc (2) and steel plate (3) form；The vertical muscle (5) of arrangement casting concrete inside prefabricated shell wall
(6), along the vertically arranged unbonded prestressing tendon of bridge pier (7)；Pier coping portion is arranged 2 movable bearing supports (9) and is connected with girder (10)；
And 4 sma helical springs (11) are set between pier coping portion and girder (10)；
The prefabricated shell wall being made up of ecc (2) and steel plate (3) is arranged along pier high sublevel, is linked by seam (8)；
Unbonded prestressing tendon (7) vertically passes through bridge pier, and, in basic (1), top anchor is in bridge pier top for bottom anchor；
In the deeply internal concrete (6) of peg (4) inside weld stud (4), and steel plate (3) inside and outside steel plate (3)；
Sma helical spring (11) one end is connected with square steel rod (13) with steel bushing (12), the other end；Steel bushing (12) top embeds
Girder (10) bottom, square steel rod (13) bottom passes through pre-embedded steel slab (14) and anchor bar (15) embeds pier coping portion.
2. a kind of high-speed railway bridge seismic Damage control system according to claim 1 it is characterised in that:
Ecc (the 2)-prefabricated shell wall prefabrication of steel plate (3), scene is connected by seam (8), and pours as inner concrete (6)
Template when building.
3. a kind of high-speed railway bridge seismic Damage control system according to claim 1 it is characterised in that:
Top girder (10) is connected with bottom bridge pier by 4 sma helical springs (11), and sma helical spring (11) is by NiTi shape
Shape memory alloys are made, and 4 sma helical springs (11) are all arranged in the horizontal direction；Wherein 2 along vertical bridge to another 2 edges
Direction across bridge is arranged.
4. a kind of high-speed railway bridge seismic Damage control system according to claim 1 it is characterised in that:
Seam (8) is dentation, for the occlusion of the prefabricated shell wall of upper-lower section.
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| CN201610744270.2A CN106351113B (en) | 2016-08-28 | 2016-08-28 | A kind of high-speed railway bridge seismic Damage control system |
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| CN201610744270.2A CN106351113B (en) | 2016-08-28 | 2016-08-28 | A kind of high-speed railway bridge seismic Damage control system |
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| CN106351113B CN106351113B (en) | 2018-04-17 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288029A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making square column type performance of concrete column confined |
| CN107288030A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making cylindrical concrete pier stud |
| CN107884268A (en) * | 2017-10-11 | 2018-04-06 | 太原理工大学 | Consider the Creep of Concrete-filled Steel Tube test device of steel pipe primary stress |
| CN107905091A (en) * | 2017-04-06 | 2018-04-13 | 沈阳建筑大学 | A kind of section assembling FRP using SMA presstressed reinforcing steel systems strengthens concrete pier of steel tube |
| CN108103927A (en) * | 2017-12-30 | 2018-06-01 | 北京工业大学 | The recoverable full precast assembly double-layer frame Bridge Pier Structure System of function after shake |
| CN108691266A (en) * | 2018-05-30 | 2018-10-23 | 林同棪国际工程咨询（中国）有限公司 | The multidirectional damping device of bridge pier |
| CN108978446A (en) * | 2018-09-28 | 2018-12-11 | 武汉理工大学 | A kind of Self-resetting energy-dissipation structure suitable for bridge |
| CN110130210A (en) * | 2019-05-31 | 2019-08-16 | 中铁二院工程集团有限责任公司 | A kind of installation method of girder falling energy-consuming device |
| CN110158484A (en) * | 2019-07-03 | 2019-08-23 | 中铁上海工程局集团有限公司 | A kind of high-speed railway packaged type bridges precast assembly structure and construction method |
| CN110409279A (en) * | 2019-07-03 | 2019-11-05 | 清华大学 | Strong bridge structure and construction method |
| CN110485276A (en) * | 2019-08-15 | 2019-11-22 | 齐鲁交通发展集团有限公司 | A kind of combined anti-seismic pier stud and its without templating construction method |
| CN110863425A (en) * | 2019-12-09 | 2020-03-06 | 河南交院工程技术有限公司 | Bridge structure |
| CN113818334A (en) * | 2021-09-22 | 2021-12-21 | 湖南大学 | Prefabricated UHPC formwork core-filling concrete pier with framework and construction method thereof |
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| CN107905091A (en) * | 2017-04-06 | 2018-04-13 | 沈阳建筑大学 | A kind of section assembling FRP using SMA presstressed reinforcing steel systems strengthens concrete pier of steel tube |
| CN107905091B (en) * | 2017-04-06 | 2019-09-13 | 沈阳建筑大学 | A kind of section assembling FRP enhancing concrete pier of steel tube using SMA- presstressed reinforcing steel system |
| CN107288030A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making cylindrical concrete pier stud |
| CN107288029A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making square column type performance of concrete column confined |
| CN107884268A (en) * | 2017-10-11 | 2018-04-06 | 太原理工大学 | Consider the Creep of Concrete-filled Steel Tube test device of steel pipe primary stress |
| CN107884268B (en) * | 2017-10-11 | 2019-10-11 | 太原理工大学 | Consider the Creep of Concrete-filled Steel Tube test device of steel pipe primary stress |
| CN108103927A (en) * | 2017-12-30 | 2018-06-01 | 北京工业大学 | The recoverable full precast assembly double-layer frame Bridge Pier Structure System of function after shake |
| CN108691266B (en) * | 2018-05-30 | 2023-12-12 | 林同棪国际工程咨询（中国）有限公司 | Multidirectional damping device for bridge pier |
| CN108691266A (en) * | 2018-05-30 | 2018-10-23 | 林同棪国际工程咨询（中国）有限公司 | The multidirectional damping device of bridge pier |
| CN108978446A (en) * | 2018-09-28 | 2018-12-11 | 武汉理工大学 | A kind of Self-resetting energy-dissipation structure suitable for bridge |
| CN108978446B (en) * | 2018-09-28 | 2024-04-12 | 武汉理工大学 | Self-resetting energy consumption structure suitable for bridge |
| CN110130210A (en) * | 2019-05-31 | 2019-08-16 | 中铁二院工程集团有限责任公司 | A kind of installation method of girder falling energy-consuming device |
| CN110158484A (en) * | 2019-07-03 | 2019-08-23 | 中铁上海工程局集团有限公司 | A kind of high-speed railway packaged type bridges precast assembly structure and construction method |
| CN110409279A (en) * | 2019-07-03 | 2019-11-05 | 清华大学 | Strong bridge structure and construction method |
| CN110485276A (en) * | 2019-08-15 | 2019-11-22 | 齐鲁交通发展集团有限公司 | A kind of combined anti-seismic pier stud and its without templating construction method |
| CN110863425A (en) * | 2019-12-09 | 2020-03-06 | 河南交院工程技术有限公司 | Bridge structure |
| CN113818334A (en) * | 2021-09-22 | 2021-12-21 | 湖南大学 | Prefabricated UHPC formwork core-filling concrete pier with framework and construction method thereof |
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