CN108951402A - Improve the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity - Google Patents

Improve the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity Download PDF

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Publication number
CN108951402A
CN108951402A CN201810717535.9A CN201810717535A CN108951402A CN 108951402 A CN108951402 A CN 108951402A CN 201810717535 A CN201810717535 A CN 201810717535A CN 108951402 A CN108951402 A CN 108951402A
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CN
China
Prior art keywords
doughnut
steel plate
damper
shaped steel
bridge pier
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CN201810717535.9A
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Chinese (zh)
Inventor
张于晔
马煜
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Priority to CN201810717535.9A priority Critical patent/CN108951402A/en
Publication of CN108951402A publication Critical patent/CN108951402A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/04Bearings; Hinges

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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 a kind of devices for improving Precast Concrete Segmental Bridges bridge pier energy dissipation capacity.Damper bottom support bracket is installed on doughnut-shaped steel plate, doughnut-shaped steel plate is fixed on cushion cap top surface, bridge pier pier shaft is located at doughnut-shaped steel plate annulus center of inside;Damper top support is installed on the outside of steel bushing, steel bushing covers the seam crossing of bottom segment and bottom second section in Precast Concrete Segmental Bridges bridge pier, and damper bottom and top connector is connect with the support on doughnut-shaped steel plate and steel bushing respectively.The apparatus structure is simple, it is easy for installation, and Precast Concrete Segmental Bridges bridge pier energy dissipation capacity can be effectively promoted, the embedding reservation member in original structure is not needed in installation process, also do not need punch etc. the operation for destroying original structure or original structure redesign and local reinforced work.

Description

Improve the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity
Technical field
The invention belongs to bridge pier energy consumption technical fields, are related to a kind of external damper of utilization and improve Precast Concrete Segmental Bridges bridge The device of the energy dissipation capacity of pier is related specifically to the consumption using Effects of Viscous Fluid Damper, steel bushing and doughnut-shaped steel plate pedestal composition It can device.
Background technique
With the propulsion of China's industry 4.0, in bridge construction field, assembled bridge pier has become the head of bridge pier construction Scheme is selected, is especially most widely used with Precast Concrete Segmental Bridges bridge pier.
Pier shaft is divided horizontally into 3 ~ 6 segments by Precast Concrete Segmental Bridges bridge pier, each segment is batch production production, to Reach to be transported again to construction site after intensity requirement and carries out assembly, by joint treatment, after the processes such as prestressed reinforcement of tensioning, shape At complete bridge pier.In the prefabrication process of bridge pier segment, the binding of reinforcing bar, the preparation of concrete, the processes such as to pour, conserve equal It completes under factory conditions, therefore, the available good guarantee of the quality of bridge pier segment.Meanwhile in Precast Concrete Segmental Bridges bridge It does not need to set up template in the work progress of pier, does not need a large amount of casting concretes, this also enables Precast Concrete Segmental Bridges bridge pier phase yet Less compared with the construction personnel that the cast-in-place bridge pier of tradition needs in the construction process, faster, the influence to environment is more for the speed of construction It is small.
Precast segment assembly bridge pier compares with the cast-in-place bridge pier of tradition with big advantage, also necessarily packaged type bridges Following development trend.But current Precast Concrete Segmental Bridges bridge pier compares the cast-in-place bridge pier of tradition and remains unchanged and comes with some shortcomings.Especially It is in terms of anti-seismic performance, although Precast Concrete Segmental Bridges bridge pier possesses preferable self-resetting capability under geological process, The problems such as its energy dissipation capacity is relatively low, and seam crossing shear resistance is weaker is the main deficiency of assembled bridge pier at this stage.Meanwhile in earthquake Under effect, the bottom seam meeting of Precast Concrete Segmental Bridges bridge pier;Continuous opening and closing, therefore the earthquake position of Precast Concrete Segmental Bridges bridge pier It is also larger to move demand.In above-mentioned deficiency, weaker become of consuming energy restricts Precast Concrete Segmental Bridges bridge pier in high-intensity earthquake region The principal element of middle application.
In order to promote the energy dissipation capacity of Precast Concrete Segmental Bridges bridge pier, part engineering staff devises some energy consumptions and reinforces dress It sets.Although all kinds of devices are using damper as core component at this stage, in all kinds of devices designed at present component count compared with More, complex contour causes component to be difficult to or higher cost, and its apparatus structure is complicated, during installation There is also larger difficulties.Part invention device needs to carry out the operation of punching equivalent damage original structure on original structure, leads to device Complex installation process, or even need to carry out local reinforcement to original structure after installation is complete.
It is poor to result in its engineering practicability due to the limitation of problem above for existing bracing means.It is pre- in order to make Section assembling bridge pier processed is promoted in high-intensity earthquake region, it would be highly desirable to which it is simple to invent a kind of structure, definite principle, and effect is obvious Device Precast Concrete Segmental Bridges bridge pier is reinforced, energy consumption energy of the Precast Concrete Segmental Bridges bridge pier under geological process is promoted with this Power.
Summary of the invention
The purpose of the present invention is to provide a kind of device for improving Precast Concrete Segmental Bridges bridge pier energy dissipation capacity, the apparatus structures Simply, easy for installation, and can effectively promote Precast Concrete Segmental Bridges bridge pier energy dissipation capacity.It is not needed in present apparatus installation process The embedding reservation member in original structure is not needed punch etc. the operation for destroying original structure yet or be carried out again to original structure The work such as design and local reinforcement.
Realize the object of the invention technical solution are as follows: a kind of device for improving Precast Concrete Segmental Bridges bridge pier energy dissipation capacity, It is the energy-consuming device that complete set is formed using steel bushing, doughnut-shaped steel plate, damper and mating connector.
Damper bottom support bracket is installed on doughnut-shaped steel plate, doughnut-shaped steel plate is fixed on cushion cap top surface, and make Bridge pier pier shaft is located at doughnut-shaped steel plate annulus center of inside;
Damper top support is installed on the outside of steel bushing, steel bushing is covered to bottom segment and bottom in Precast Concrete Segmental Bridges bridge pier The seam crossing of portion's second section, and guarantee that steel bushing firmly installs, it can not slide, install between steel bushing and pier shaft It needs for the damper bottom support bracket on damper top support and doughnut-shaped steel plate to be all aligned in journey;
Damper bottom and top connector is connect with the support on doughnut-shaped steel plate and steel bushing respectively;
The doughnut-shaped steel plate of the present apparatus is that steel plate bottom surface has the monolith doughnut-shaped steel plate that peg is enclosed along its perimeter uniform welding N, N >=1;
Present apparatus bottom steel plate is the doughnut-shaped steel plate as made of more valve parts assemblings;
Doughnut-shaped steel plate annular diameters should be greater than 5% or more bridge pier pier shaft diameter;
Damper bottom support bracket is connected by screw bolts, is fixed on doughnut-shaped steel plate upper surface;
Steel bushing is formed using N valve parts assembling, and is connected by screw bolts between each valve component, N >=2;
Each valve steel bushing cartridge module up to being provided with a damper top support less;
Steel bushing internal diameter should be slightly less than bridge pier pier shaft diameter;
Damper top support is welded on the outside of steel bushing cartridge module using fillet weld mode;
The steel plate thickness that doughnut-shaped steel plate and steel bushing use is 4.5mm ~ 200mm;
The damper that the present apparatus uses for can stretch and compress both direction the Effects of Viscous Fluid Damper of damping force be provided;
Present apparatus installation is there are two damper, and the horizontal direction angle between two dampers is between 90 ° ~ 135 °;
Damper after the installation is completed, with pier shaft it is vertical to angle between 30 ° ~ 45 °.
Compared with prior art, the present invention it is significantly a little are as follows: (1) reinforce Precast Concrete Segmental Bridges bridge pier using the present apparatus When, after steel bushing, doughnut-shaped steel plate are connected with Effects of Viscous Fluid Damper by connector, a set of independent energy-consuming device is formed, no Preburied component is needed, local reinforcement is not needed, therefore, does not increase the design complexity and difficulty of construction of former bridge pier;(2) this hair Bright to be independent energy consuming mechanism, the damping force of generation is only related with dampener hydraulic cylinder movement velocity, in earthquake energy Any rigidity will not be added to original bridge pier again simultaneously, ensure that original bridge pier in temperature deformation and the deformation at a slow speed such as creep Under will not generate additional stress;(3) Effects of Viscous Fluid Damper reliable performance, maintenance is convenient, and damped coefficient vertically hung scroll is larger, answers With range than wide;(4) present invention can be used to the seismic hardening of proposed bridge, and the antidetonation that can be used for existing bridge adds Gu;(5) present invention can also provide certain position limitation protection and make while improving precast segment assembly bridge pier energy dissipation capacity With.
Detailed description of the invention
Fig. 1 is the schematic device that the present invention improves Precast Concrete Segmental Bridges bridge pier energy dissipation capacity.
Fig. 2 is a valve steel bushing component diagram.
Fig. 3 is present apparatus use state diagram.
Specific embodiment
The present invention improves the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity, as shown in Figure 1, mainly being damped by viscous fluid Device 3, the steel bushing 2 with damper top support 5 and the composition of the doughnut-shaped steel plate pedestal 1 with damper bottom support bracket 4.It has The doughnut-shaped steel plate 1 of damper bottom support bracket 4, in cushion cap top surface, installation is in place;It is completed in Precast Concrete Segmental Bridges pier shaft section assembling Afterwards, two valve of A, B of 2 component of steel bushing with damper top support 5 is mounted on the second section of pier shaft bottom segment and bottom The seaming position of section, and tighten bolt 8 and lock latch 9;Later, by the bottom fitting of Effects of Viscous Fluid Damper 3 and top Connector is connect with support 4 and 5 on doughnut-shaped steel plate 1 and on steel bushing 2 respectively, and ensure to connect it is firm.
Below with reference to specific example and instruction sheet 1, the invention will be further described by Fig. 2 and Fig. 3.
(1) doughnut-shaped steel plate and steel bushing cartridge module are processed:
First choice processes on the good doughnut-shaped steel plate 1 of pre-production for pacifying according to the installation site of Effects of Viscous Fluid Damper 3 The screw hole of damper bottom support bracket 4 is filled, and makes screw thread in screw hole;
In 4 bottom surface of doughnut-shaped steel plate for making screw hole, peg 11 is enclosed along its perimeter uniform welding two;
The peg 11 is characterized in that end with peg cap;
After steel plate 1 is cooling, damper bottom support bracket 4 is fixed on above-mentioned doughnut-shaped steel plate 1 with bolt 6, and tighten bolt 6;
On 2 component of steel bushing rolled in advance, damper top support 5 is being welded along the middle part of its short transverse, is being used Bilateral fillet weld seam;
2 component of steel bushing is divided into two valve of A, B.Wherein, a valve steel bushing cartridge module is as shown in Fig. 2.
(2) mounting assembly:
After cushion cap concreting, the ring with damper bottom support bracket 4 and peg 11 that will be made in (1) step Shape steel plate base 1 is mounted on cushion cap top surface concrete surface, it is ensured that doughnut-shaped steel plate pedestal 1 is horizontal, and all pegs 11 are complete It is inserted into cushion cap top surface concrete, 1 bottom surface of doughnut-shaped steel plate pedestal and cushion cap top surface concrete good fit;
After the completion of Precast Concrete Segmental Bridges bridge pier section assembling, by concrete near pier shaft bottom segment and bottom second section seam Surface carries out dabbing processing;
It rinses processed concrete surface well, dries;
It will uniformly be applied on the inside of the A valve of the component for the steel bushing 2 with damper top support 5 made in (1) step and B valve Smear one layer of steel bonding glue;
To be coated with two valve steel bushings, 2 assembly set of steel bonding glue in surface treated Precast Concrete Segmental Bridges bridge pier bottom segment and The seaming position of bottom second section tightens bolt 8 and locks the latch 9 of steel bushing 2;
During the steel bushing installation is in place, by two damper top supports 5 on sleeve and it should be located on doughnut-shaped steel plate 1 The alignment of two damper bottom support brackets 4 after, then the bolt 8 on latch 9 all tightened;
The internal diameter of the steel bushing 2 should be slightly less than pier shaft diameter;
The bottom fitting of Effects of Viscous Fluid Damper 3 and the damper bottom support bracket 4 on doughnut-shaped steel plate 1 are connected with link bolt 10 It connects;
The damper top support 5 on the top contact and steel bushing of Effects of Viscous Fluid Damper 3 is connected with link bolt 7;
After the completion of two Effects of Viscous Fluid Damper 3 and bottom support bracket 4, top support 5 connect, by link bolt 10 and hinged spiral shell Bolt 7 is tightened respectively.
The Effects of Viscous Fluid Damper after the installation is completed, damper and pier shaft it is vertical to angle at 30 ° ~ 45 °.
The present invention after the installation is completed, as shown in Figure 3.
The present invention provides damping force using Effects of Viscous Fluid Damper for Precast Concrete Segmental Bridges bridge pier, improves Precast Concrete Segmental Bridges The energy dissipation capacity of bridge pier, and Effects of Viscous Fluid Damper is mounted on Precast Concrete Segmental Bridges bridge pier using steel bushing and doughnut-shaped steel plate On cushion cap, pre-buried reservation member is not needed, does not need the operation for punch etc. damage bridge pier structure yet, it is easy for installation.Meanwhile The displacement stroke of general Effects of Viscous Fluid Damper is larger, can satisfy Precast Concrete Segmental Bridges bridge pier bridge pier under geological process and occurs The case where larger swing.Apparatus of the present invention only need to install two Effects of Viscous Fluid Damper, horizontal direction angle under normal circumstances Between 90 ° ~ 135 °, more existing similar approach more save the cost.

Claims (10)

1. a kind of device for improving Precast Concrete Segmental Bridges bridge pier energy dissipation capacity, it is characterised in that: including Effects of Viscous Fluid Damper (3), the steel bushing (2) with damper top support (5) and the doughnut-shaped steel plate (1) with damper bottom support bracket (4);
It is equipped on doughnut-shaped steel plate (1) damper bottom support bracket (4), doughnut-shaped steel plate (1) is fixed on cushion cap top surface, bridge pier pier Body is located at doughnut-shaped steel plate (1) annulus center of inside;
It is equipped with damper top support (5) on the outside of steel bushing (2), steel bushing (2) is covered in the bottom of Precast Concrete Segmental Bridges bridge pier The seam crossing of segment and bottom second section;
Damper bottom and top connector is respectively and on the damper bottom support bracket (4) and steel bushing (2) on doughnut-shaped steel plate (1) Damper top support (5) connection.
2. the apparatus according to claim 1, it is characterised in that: the doughnut-shaped steel plate (1) is bottom surface with equal along its perimeter The monolith doughnut-shaped steel plate of even welding N circle peg, N >=1.
3. the apparatus according to claim 1, it is characterised in that: the doughnut-shaped steel plate (1) is formed by more valve parts assemblings.
4. the apparatus according to claim 1, it is characterised in that: doughnut-shaped steel plate (1) annular diameters are greater than bridge pier pier shaft 5% or more diameter.
5. the apparatus according to claim 1, it is characterised in that: the damper bottom support bracket (4) is connected by screw bolts solid It is scheduled on doughnut-shaped steel plate (1) upper surface.
6. the apparatus according to claim 1, it is characterised in that: the steel bushing (2) is formed using N valve parts assembling, and It is connected by screw bolts between each valve component, N >=2.
7. the apparatus according to claim 1, it is characterised in that: be at least arranged one on each valve steel bushing (2) component A damper top support (5).
8. the apparatus according to claim 1, it is characterised in that: steel bushing (2) internal diameter is slightly less than bridge pier pier shaft diameter.
9. the apparatus according to claim 1, it is characterised in that: the damper top support (5) uses fillet weld mode It is welded on the outside of steel bushing (2) component.
10. the apparatus according to claim 1, it is characterised in that: the steel that the doughnut-shaped steel plate (1) and steel bushing (2) use Plate thickness is 4.5mm ~ 200mm.
CN201810717535.9A 2018-06-29 2018-06-29 Improve the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity Pending CN108951402A (en)

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CN201810717535.9A CN108951402A (en) 2018-06-29 2018-06-29 Improve the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity

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Application Number Priority Date Filing Date Title
CN201810717535.9A CN108951402A (en) 2018-06-29 2018-06-29 Improve the device of Precast Concrete Segmental Bridges bridge pier energy dissipation capacity

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109706831A (en) * 2019-01-11 2019-05-03 南京理工大学 Improve the device and its construction method of the energy consumption of section assembling bridge pier and self-resetting capability
CN114319072A (en) * 2021-12-09 2022-04-12 东南大学 Hydraulic energy consumption device for self-resetting pier, anti-seismic system and construction method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05230808A (en) * 1992-02-24 1993-09-07 Ishikawajima Harima Heavy Ind Co Ltd Vibration damping device for bridge
KR20090125233A (en) * 2009-11-09 2009-12-04 장정환 Connection for steel pile head, connection structure and method of pile and precast concrete pier structure
CN104612036A (en) * 2015-01-22 2015-05-13 宁波大学 Unbonded post-tensioning prestress concrete-filled double-wall steel pipe prefabricated assembly piers with additional dampers
CN104612038A (en) * 2015-01-22 2015-05-13 宁波大学 Flange-connecting concrete-filled double-wall steel pipe prefabricated assembly piers with additional dampers
CN206359994U (en) * 2016-12-22 2017-07-28 安徽建筑大学 A kind of spacing power consumption protection device of existing section assembling bridge pier
CN107974933A (en) * 2017-07-06 2018-05-01 东南大学 The precast assembly bridge pier anti-seismic structure and its construction method of built-in replaceable viscous damper and energy consumption reinforcing bar

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05230808A (en) * 1992-02-24 1993-09-07 Ishikawajima Harima Heavy Ind Co Ltd Vibration damping device for bridge
KR20090125233A (en) * 2009-11-09 2009-12-04 장정환 Connection for steel pile head, connection structure and method of pile and precast concrete pier structure
CN104612036A (en) * 2015-01-22 2015-05-13 宁波大学 Unbonded post-tensioning prestress concrete-filled double-wall steel pipe prefabricated assembly piers with additional dampers
CN104612038A (en) * 2015-01-22 2015-05-13 宁波大学 Flange-connecting concrete-filled double-wall steel pipe prefabricated assembly piers with additional dampers
CN206359994U (en) * 2016-12-22 2017-07-28 安徽建筑大学 A kind of spacing power consumption protection device of existing section assembling bridge pier
CN107974933A (en) * 2017-07-06 2018-05-01 东南大学 The precast assembly bridge pier anti-seismic structure and its construction method of built-in replaceable viscous damper and energy consumption reinforcing bar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109706831A (en) * 2019-01-11 2019-05-03 南京理工大学 Improve the device and its construction method of the energy consumption of section assembling bridge pier and self-resetting capability
CN114319072A (en) * 2021-12-09 2022-04-12 东南大学 Hydraulic energy consumption device for self-resetting pier, anti-seismic system and construction method
CN114319072B (en) * 2021-12-09 2024-05-03 东南大学 Hydraulic energy consumption device for self-resetting bridge pier, earthquake-resistant system and construction method

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Application publication date: 20181207