CN215441468U

CN215441468U - Bridge anti-falling limiting device

Info

Publication number: CN215441468U
Application number: CN202120775057.4U
Authority: CN
Inventors: 闫磊; 李果; 程龙飞; 郭远臣; 刘芳平
Original assignee: Chongqing Three Gorges University
Current assignee: Chongqing Three Gorges University
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2022-01-07
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a bridge anti-falling limiting device, which mainly relates to the technical field of bridge building construction; the method comprises the following steps: the side plate is fixed on the beam body; the upper top plate is horizontally arranged, and one end of the upper top plate is fixedly connected with the side plate; the lower bottom plate is horizontally arranged and is fixed on the cover beam or the bridge abutment; a plurality of vertical plates are vertically arranged between the upper top plate and the lower bottom plate, the top ends of the vertical plates are fixedly connected with the upper top plate, and the bottom ends of the vertical plates are fixedly connected with the lower bottom plate; a replaceable energy consumption section is arranged between every two adjacent vertical plates and is horizontally arranged; the utility model has the capacity of energy consumption limiting and quick replacement and repair, has simple structure, low manufacturing cost and easy manufacture and installation, and can greatly improve the beam falling prevention performance of the bridge structure.

Description

Bridge anti-falling limiting device

Technical Field

The utility model relates to the technical field of bridge building construction, in particular to a bridge anti-falling limiting device.

Background

Under the action of an earthquake, the bridge is easy to have earthquake damages such as longitudinal and transverse displacement of a beam body, seating of a main beam, shearing damage of a stop block, beam falling of an upper structure and the like, and after the earthquake occurs, the smooth traffic route plays a role in lifting earthquake relief smoothly, and particularly, traffic is blocked after the earthquake occurs in life line projects such as roads, railways and urban bridges, so that the earthquake relief is very unfavorable for resisting the development of the earthquake relief.

In the prior art, after an earthquake occurs, the concrete stop block is mostly used for 'hard resistance' beam falling, the energy consumption limiting function cannot be exerted to the maximum extent, the capability of fast replacement after energy consumption is often lacked, the earthquake damage part and the damage degree of a bridge are difficult to control, and the bridge is difficult to repair fast after the earthquake.

In addition, displacement of the beam body by the running vehicle is more serious with rapid rise of traffic flow and vehicle load. On one hand, when the bridge structure is in normal use, under the action of vehicle load, constant load and the like, a beam body tends to slide along the driving direction of an automobile, for example, a curved beam bridge body tends to slide transversely, and a continuous beam bridge with a large longitudinal gradient tends to slide longitudinally, for example, expansion joints are squeezed to cause the bridge deck to swell, which is caused by accumulation of the driving action of the automobile, particularly, a lower structure is arranged as a bridge with a single support (a single column pier), and the beam body is easy to twist due to eccentric driving of the automobile; on the other hand, if the beam body transversely shifts, the offset amount is larger and larger under the repeated action of the vehicle load along with the lapse of time, and sudden change occurs when the beam body deviates to a certain degree, so that the beam body is easy to overturn. And lack among the prior art and move the roof beam body that causes and take precautions against, have the potential risk that the bridge slope falls, threaten people's property life safety seriously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides a bridge anti-falling limiting device which has the capabilities of energy consumption limiting and quick replacement and repair, is simple in structure, low in manufacturing cost, easy to manufacture and install and capable of greatly improving the anti-falling performance of a bridge structure.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the utility model provides a roof beam stop device is prevented falling by bridge, includes:

the side plate is fixed on the beam body;

the upper top plate is horizontally arranged, and one end of the upper top plate is fixedly connected with the side plate;

the lower bottom plate is horizontally arranged and is fixed on the cover beam or the bridge abutment;

a plurality of vertical plates are vertically arranged between the upper top plate and the lower bottom plate, the top ends of the vertical plates are fixedly connected with the upper top plate, and the bottom ends of the vertical plates are fixedly connected with the lower bottom plate;

and a replaceable energy consumption section is arranged between every two adjacent vertical plates and is horizontally arranged.

Preferably, a certain distance is left between the side plate and the beam body.

Preferably, the side plate comprises a joint plate and an embedded steel plate embedded in the beam body, the embedded steel plate is detachably connected with the joint plate, and one end of the upper top plate is fixed on the joint plate.

Preferably, one side of the embedded steel plate, which is far away from the joint plate, is provided with embedded ribs.

Preferably, the embedded steel plate is connected with the joint plate through a first high-strength bolt.

Preferably, the top ends of the vertical plates are connected with the upper top plate, and the bottom ends of the vertical plates are connected with the lower bottom plate through welding fillet welds.

Preferably, the upper top plate and the side plate are welded through on-site welding seams.

Preferably, the replaceable energy consumption section is of an H shape and comprises an energy consumption piece vertical plate, energy consumption piece horizontal plates are arranged at the upper end and the lower end of the energy consumption piece vertical plate, energy consumption piece base plates are arranged at the left end and the right end of the energy consumption piece vertical plate, and the energy consumption piece base plates are detachably connected with the vertical plates.

Preferably, the replaceable energy consumption section is detachably connected with the vertical plate through a second high-strength bolt.

Preferably, the lower base plate is fixed to the capping beam or the abutment by an anchor bolt.

Compared with the prior art, the utility model has the beneficial effects that:

1. the anti-beam-falling device has a reasonable structural form, can realize the energy consumption limiting effect by being divided into two stages through local or whole damage and damage, dissipates the seismic energy through the damage deformation of the replaceable energy consumption section in the first stage, can recover the normal use function of the structure only by locally replacing the replaceable energy consumption section after the device is damaged, and ensures that the bridge structure does not generate beam-falling damage through the cost of the whole damage and damage of the device in the second stage, thereby realizing that the anti-beam-falling device has two capabilities of energy consumption limiting and quick replacement and repair, can furthest exert the energy consumption limiting effect, and has good application prospect.

2. Compared with the existing beam-falling prevention energy-consumption damping device, the beam-falling prevention energy-consumption damping device has the characteristics of simple structure, low manufacturing cost and easiness in manufacturing and installation, and the manufacturing cost can be obviously reduced compared with that of the existing device while the same limiting effect of the beam-falling prevention device is achieved.

3. The replaceable energy consumption section adopted by the utility model can be quickly replaced on site after an earthquake is finished, so that the traffic recovery time after the earthquake is greatly shortened, and the life and property loss of people can be reduced to the maximum extent.

4. The utility model can comprehensively consider the displacement condition of the upper structure of the bridge caused by the vehicle load action, the earthquake action and the like, can effectively limit the displacement condition and can greatly improve the beam falling prevention performance of the bridge structure.

5. The utility model has modular assembly capability, can comprehensively consider the structure of the adjusting device according to the actual engineering conditions of the bridge, the load action of a vehicle, the earthquake intensity division and other conditions, for example, the number of the replaceable energy consumption sections and the vertical plate arrangement is adjusted, so that the energy consumption limiting function of the device is fully exerted under different engineering practices.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic installation view A of the present invention;

FIG. 3 is a schematic view B of the installation of the present invention;

fig. 4 is a schematic structural diagram of the replaceable energy dissipating section.

The reference numbers in the drawings: 1. a side plate; 11. a joint plate; 12. pre-burying a steel plate; 13. pre-embedding ribs; 14. a first high-strength bolt; 2. an upper top plate; 3. a lower base plate; 31. an anchor bolt; 4. a vertical plate; 5. the energy consumption section can be replaced; 51. a vertical plate of the energy dissipation member; 52. a horizontal plate of energy dissipation members; 53. a pad plate of the energy dissipation part; 54. a second high-strength bolt; 6. a T-beam; 7. a capping beam; 8. and (5) pier studs.

Detailed Description

The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

Example 1: as shown in the attached drawings 1-4, the utility model relates to a bridge anti-falling limiting device, which comprises:

the side plate 1 is fixed on the beam body;

preferably, in order to prolong the service life of the bridge, a certain distance is reserved between the side plate 1 and the beam body, and in an initial state, when the bridge is installed between the beam bodies, a proper distance is reserved between the side plate 1 and the contact surface of the beam body so as to provide a sufficient deformation space for the structure, which is beneficial to releasing the relative displacement of the beam body caused by temperature and load, avoiding the energy consumption of the replaceable energy consumption section in the normal use stage of the bridge and prolonging the service life of the device.

The upper top plate 2 is horizontally arranged, and one end of the upper top plate 2 is fixedly connected with the side plate 1; preferably, for convenient installation, the upper top plate 2 and the side plate 1 are welded through on-site welding seams.

Preferably, in order to fix the side plate on the beam body conveniently, the side plate 1 includes a joint plate 11 and an embedded steel plate 12 embedded in the beam body, the embedded steel plate 12 is detachably connected with the joint plate 11, and one end of the upper top plate 2 is fixed on the joint plate 11.

Further, in order to ensure the pre-embedded firmness of the embedded steel plate, at least two pre-embedded ribs 13 are welded on one side, away from the joint plate 11, of the embedded steel plate 12, and the pre-embedded ribs 13 and the embedded steel plate 12 are all embedded into the T-shaped beam 6.

Furthermore, in order to facilitate the connection between the embedded steel plate and the joint plate, the firmness of the connection between the embedded steel plate and the joint plate is ensured, and the embedded steel plate 12 is connected with the joint plate 11 through a first high-strength bolt 14.

The lower bottom plate 3 is horizontally arranged, and the lower bottom plate 3 is fixed on a cover beam or a bridge abutment;

preferably, the bottom plate 3 is fixed on the bent cap or the abutment through an anchor bolt 31, as shown in fig. 2, an anchor bolt opening corresponding to the anchor bolt 31 is formed in the bent cap 7, mortar is poured into the anchor bolt opening after the anchor bolt 31 is inserted into the anchor bolt opening, and in fig. 3, the pier 8 is arranged at the bottom end of the bent cap 7.

Four vertical plates 4 are vertically arranged between the upper top plate 2 and the lower bottom plate 3, the top ends of the vertical plates 4 are fixedly connected with the upper top plate 2, and the bottom ends of the vertical plates 4 are fixedly connected with the lower bottom plate 3;

preferably, in order to ensure the firmness of the connection of the vertical plate with the upper top plate and the lower bottom plate, the top ends of the vertical plates 4 are connected with the upper top plate 2, and the bottom ends of the vertical plates 4 are connected with the lower bottom plate 3 through welding fillet welds.

Adjacent two all be equipped with a removable energy consumption section 5 between the riser 4, removable energy consumption section 5 level is arranged, energy consumption spare backing plate 53 can be dismantled with riser 4 and be connected, and is preferred, and in order to make things convenient for the change of removable energy consumption section, removable energy consumption section 5 can be dismantled with riser 4 through second high strength bolt 54 and be connected.

Specifically, the replaceable energy consumption section 5 is an H-shaped section, and may be made of H-shaped steel, preferably, as shown in fig. 4, the replaceable energy consumption section 5 includes an energy consumption vertical plate 51, energy consumption horizontal plates 52 are welded at the upper and lower ends of the energy consumption vertical plate 51, the lengths of the energy consumption vertical plate 51 and the energy consumption horizontal plates 52 are the same, energy consumption backing plates 53 are arranged at the left and right ends of the energy consumption vertical plate 51, the energy consumption backing plates 53 may be made of energy consumption steel backing plates, the left ends of the energy consumption vertical plate 51 and the energy consumption horizontal plates 52 are welded to the left energy consumption backing plate 53, the right ends of the energy consumption vertical plate 51 and the energy consumption horizontal plates 52 are welded to the right energy consumption backing plate 53, and a plurality of mounting holes adapted to the second high-strength bolts 54 are formed in the two energy consumption backing plates 53.

The working principle of the utility model is as follows: the lower bottom plate 3 is fixedly connected with the cover beam 7 or the abutment through the anchor bolts 31, the lower bottom plate 3 is connected with four groups of vertical plates 4 through welding fillet welds, 3 groups of replaceable energy consumption sections 5 are arranged among the four groups of vertical plates 4 and are connected through second high-strength bolts 54, the four groups of vertical plates 4 are fixedly connected with the upper top plate 2 through welding fillet welds, the upper top plate 2 is connected with the side plate 1 through a welding mode, and the side plate 1 is externally connected with the embedded ribs 13 and is fixedly connected with the beam body.

When the beam body shifts due to the action of earthquake, vehicle load and the like, the energy is transmitted to the replaceable energy consumption section 5 through the connecting part of the side plate 1 and the beam body, the energy is dissipated through damage deformation by the three groups of replaceable energy consumption sections 5, the normal use function of the structure can be recovered only by locally replacing the replaceable energy consumption section 5 after the replaceable energy consumption section 5 is damaged, if the replaceable energy consumption section 5 is damaged and deformed, the energy is not sufficiently dissipated, the residual energy ensures that the bridge structure is not damaged by falling the beam through the damage of the whole device, the graded energy consumption of the beam falling prevention device is realized, two capabilities of energy consumption limiting and quick replacement and repair are simultaneously provided, and the beam falling prevention device has a good application prospect.

Example 2: on the basis of the embodiment 1, the vertical plates 4 are arranged into a plurality of groups, and the number of the arranged groups of the vertical plates 4 is customized according to the actual needs of the bridge structure, so that the energy consumption capacity of the bridge structure is fully exerted under different engineering practices.

Specifically, the vertical setting group number of the vertical plates 4 is a plurality of groups.

Specifically, the number of the replaceable energy consumption sections 5 is one less than the number of the vertical plates 4.

Claims

1. The utility model provides a roof beam stop device is prevented falling by bridge which characterized in that includes:

the side plate (1), the side plate (1) is fixed on the beam body;

the upper top plate (2) is horizontally arranged, and one end of the upper top plate (2) is fixedly connected with the side plate (1);

the lower bottom plate (3) is horizontally arranged, and the lower bottom plate (3) is fixed on the cover beam or the bridge abutment;

a plurality of vertical plates (4) are vertically arranged between the upper top plate (2) and the lower bottom plate (3), the top ends of the vertical plates (4) are fixedly connected with the upper top plate (2), and the bottom ends of the vertical plates are fixedly connected with the lower bottom plate (3);

a replaceable energy consumption section (5) is arranged between every two adjacent vertical plates (4), and the replaceable energy consumption sections (5) are horizontally arranged.

2. The bridge anti-falling beam limiting device according to claim 1, characterized in that: and a certain distance is reserved between the side plate (1) and the beam body.

3. The bridge anti-falling beam limiting device according to claim 1, characterized in that: the side plate (1) comprises a joint plate (11) and an embedded steel plate (12) embedded in the beam body, the embedded steel plate (12) is detachably connected with the joint plate (11), and one end of the upper top plate (2) is fixed on the joint plate (11).

4. The bridge anti-falling beam limiting device according to claim 3, characterized in that: one side of the embedded steel plate (12) far away from the joint plate (11) is provided with embedded ribs (13).

5. The bridge anti-falling beam limiting device according to claim 3, characterized in that: the embedded steel plate (12) is connected with the joint plate (11) through a first high-strength bolt (14).

6. The bridge anti-falling beam limiting device according to claim 1, characterized in that: the top ends of the vertical plates (4) are connected with the upper top plate (2) and the bottom ends of the vertical plates (4) are connected with the lower bottom plate (3) through welding fillet welds.

7. The bridge anti-falling beam limiting device according to claim 1, characterized in that: the upper top plate (2) and the side plate (1) are welded through on-site welding seams.

8. The bridge anti-falling beam limiting device according to claim 1, characterized in that: removable power consumption section (5) are the H type, removable power consumption section (5) are including power consumption piece vertical plate (51), the upper and lower both ends of power consumption piece vertical plate (51) all are equipped with power consumption piece horizontal plate (52), both ends all are equipped with power consumption piece backing plate (53) about power consumption piece vertical plate (51), power consumption piece backing plate (53) can be dismantled with riser (4) and be connected.

9. The bridge anti-falling beam limiting device according to claim 1, characterized in that: the replaceable energy consumption section (5) is detachably connected with the vertical plate (4) through a second high-strength bolt (54).

10. The bridge anti-falling beam limiting device according to claim 1, characterized in that: the lower bottom plate (3) is fixed on the bent cap or the bridge abutment through an anchor bolt (31).