A friction and gravity energy dissipation type bridge seismic stopper and construction method thereof

Abstract

The present invention relates to the technical field of bridge earthquake resistance, and in particular to a friction and gravity energy dissipation type bridge earthquake resistance block and a construction method thereof, comprising a steel bottom plate, a steel cover, a groove steel block, a small steel block, a steel block, a steel ball, a transverse spring, a vertical spring, a heavy pulley, a steel corbel web, a steel corbel bottom plate, a steel corbel top plate, a steel corbel side plate, a steel corbel bolt, a steel baffle web, a steel baffle top plate, a steel baffle side plate, and a steel baffle bolt. When an earthquake occurs, the present invention reduces the effect of earthquake energy on the bridge by converting earthquake energy into pulley gravity potential energy, and the internal components generate friction and consume earthquake energy when moving, and at the same time, the setting of each steel spring can buffer the earthquake energy, so that the present invention can alleviate the problem of bridge beam movement, and even reduce the possibility of collision between bridge beams, and can better protect the bridge, so that the damage to the bridge when an earthquake occurs is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge earthquake protection, and in particular to a friction and gravity energy dissipation type bridge earthquake-resistant stopper and a construction method thereof. Background Art

[0002] With the continuous acceleration of urban modernization, the large-scale gathering of urban population, and the increasing importance of transportation networks in the lifeline of the entire city, people's dependence on bridges has also increased.

[0003] However, due to the continuous occurrence of earthquakes and disasters, many bridge projects around the world have been damaged in earthquakes in recent decades, seriously blocking the transportation lifeline in the earthquake zone, further aggravating the secondary disasters caused by the earthquake, and bringing great difficulties to disaster relief and post-disaster reconstruction. At the same time, as an important social infrastructure, bridges require large investments, are highly public, and are difficult to maintain and manage. Once a bridge is damaged, it will cause heavy economic losses.

[0004] Therefore, improving the seismic performance of bridges is one of the basic measures to reduce earthquake losses and enhance regional safety. How to invent a device for bridges that can buffer seismic energy and prevent earthquakes is an issue that we need to focus on. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a friction and gravity energy-consuming bridge seismic block and a construction method thereof, so as to reduce the displacement of the bridge beam and consume and buffer the seismic energy, and be able to provide a certain degree of protection for the bridge when an earthquake occurs; when an earthquake occurs, the bridge beam moves, and even the beams collide with each other. The device can convert the energy generated by the earthquake into the gravitational potential energy of the heavy pulley and the elastic potential energy of the spring, and the internal components can generate friction to consume energy when moving, thereby reducing the movement of the bridge beam and achieving the effect of buffering the seismic energy, and after use, the device can be self-reset by resetting the spring and can be used many times.

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0007] The present invention discloses a friction and gravity energy dissipation type bridge anti-seismic stopper, comprising a steel base plate, a groove steel block, a steel stopper, a steel ball, a transverse spring, a steel corbel assembly and a steel baffle assembly; the steel corbel assembly is fixed above the side wall of the pier, and two steel baffle assemblies are fixed below the main beam; the steel base plate is fixed to the top of the steel corbel assembly, groove steel blocks are placed on both sides of the upper surface of the steel base plate, the steel ball is placed in the middle of its upper surface, the steel stopper is placed between the steel ball and the groove steel block, the three are connected by a transverse spring, and the outer wall of the groove steel block and the steel baffle assembly are connected by a transverse spring.

[0008] A concave arc-shaped groove is formed on the top of the groove steel block; a steel cover is provided on the outside, and the steel cover has an inverted "concave" structure. The middle part of the lower surface of the top plate is connected to one end of the vertical spring, and the other end of the vertical spring is connected to a heavy pulley, and the heavy pulley slides in cooperation with the arc-shaped groove on the top of the groove steel block; a gap is provided between the side plates on both sides of the steel cover and the two side walls of the groove steel block, and the bottom of the side plate is fixed on the upper surface of the steel bottom plate.

[0009] The arc-shaped groove at the top of the groove steel block is provided with a first small steel block and a second small steel block connected thereto on both sides, and the gap between the top of the first small steel block and the second small steel block and the lower surface of the top plate of the steel cover is smaller than the outer diameter of the heavy pulley.

[0010] A rectangular opening for the transverse spring to pass through is provided below the side walls of the side plates on both sides of the steel cover.

[0011] A track with a concave arc-shaped cross section is formed in the middle of the upper surface of the steel bottom plate, and the steel ball slides in cooperation with the track.

[0012] The steel corbel assembly comprises a steel corbel web, a steel corbel bottom plate, a steel corbel top plate and a steel corbel side plate. The steel corbel side plates are fixed to the top of the side wall of the pier by steel corbel bolts. The steel corbel top plate and the steel corbel bottom plate are placed horizontally, and two parallel steel corbel webs are vertically welded therebetween. The right side of the steel corbel side plate is respectively connected to the steel corbel top plate, the steel corbel bottom plate and one side of the steel corbel web; the steel bottom plate is fixed to the steel corbel top plate.

[0013] The steel baffle assembly includes a steel baffle web, a steel baffle top plate, and steel baffle side plates. The steel baffle top plate is fixed to the bottom of the main beam by steel baffle bolts. The steel baffle side plates are placed vertically and welded to two parallel steel baffle webs and steel baffle top plates.

[0014] The transverse spring includes an outer transverse spring, a middle transverse spring and an inner transverse spring. The outer side wall of the groove steel block is connected to the steel baffle side plate through the outer transverse spring, the inner side wall is connected to the steel baffle through the middle transverse spring, and the steel baffle and the steel ball are connected through the inner transverse spring.

[0015] The invention discloses a construction method of a friction and gravity energy dissipation bridge seismic stopper, comprising the following steps: firstly, a steel corbel web, a steel corbel bottom plate, a steel corbel top plate and a steel corbel side plate are welded and fixed to form a steel corbel assembly; a steel baffle web, a steel baffle top plate and a steel baffle side plate are welded and fixed to form a steel baffle assembly; then, steel corbel bolts and steel baffle bolts are used to fix them to the bridge pier and the main beam respectively; then, the steel bottom plate is welded and fixed to the steel corbel top plate, and a groove steel block, a steel stopper and a steel ball are placed in sequence. On the steel bottom plate, the steel baffle side plate, the groove steel block, the steel baffle and the steel ball are welded and connected with the outer transverse spring, the middle transverse spring and the inner transverse spring; then the first small steel baffle and the second small steel baffle are respectively welded and fixed to the two sides of the highest point of the groove steel block to ensure that the distance between the upper side of the small steel baffle and the lower surface of the top plate of the steel cover is less than the outer diameter of the heavy pulley; finally, the steel cover connected to the heavy pulley through the vertical spring is welded and fixed to the steel bottom plate, and ensure that the outer transverse spring and the middle transverse spring can pass through the rectangular openings on both sides of the steel cover.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention can buffer the energy generated when an earthquake occurs, and at the same time can alleviate the problem of movement of bridge beams, and even reduce the possibility of collision between bridge beams, so as to better protect the bridge and reduce the damage to the bridge when an earthquake occurs.

[0018] 2. The present invention reduces the effect of earthquake energy on the bridge through energy conversion, does not require additional use of electricity or other energy, and is more environmentally friendly and convenient.

[0019] 3. The groove steel block, steel stopper and steel ball in the present invention can generate friction with the steel bottom plate and consume seismic energy when sliding, and the front and rear sides of the groove steel block can generate friction with the inner wall of the steel cover and consume seismic energy when sliding.

[0020] 4. The steel cover in the present invention can prevent the groove steel block from being displaced too much and separated from the steel bottom plate, and the track can prevent the steel ball from rolling around at will, both of which can make the device safe and feasible.

[0021] 5. The present invention has a simple structure, is easy to construct, and uses materials with a long lifespan, which can extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the cross section of the core device of the present invention;

[0023] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0024] Figure 3 for Figure 2 Partial magnification;

[0025] Figure 4 It is the overall three-dimensional schematic diagram of the core device;

[0026] Figure 5 This is a schematic diagram of the exploded structure of the core device of the present invention;

[0027] Figure 6 This is a schematic diagram of the device being arranged along the bridge.

[0028] In the figure: 1. steel bottom plate, 2. steel cover, 3. grooved steel block, 4. first small steel stopper, 5. second small steel stopper, 6. steel stopper, 7. steel ball, 8. outer transverse spring, 9. middle transverse spring, 10. inner transverse spring, 11. vertical spring, 12. rectangular opening, 13. track, 14. heavy pulley, 15. steel corbel web, 16. steel corbel bottom plate, 17. steel corbel top plate, 18. steel corbel side plate, 19. steel corbel bolts, 20. steel baffle web, 21. steel baffle top plate, 22. steel baffle side plate, 23. steel baffle bolts, 24. main beam, 25. second main beam, 26. bridge pier, 27. fixed bridge bearing, 28. movable bridge bearing, 29. expansion joint. DETAILED DESCRIPTION

[0029] The present invention is further described below:

[0030] See also Figure 1-6 ,

[0031] The present invention discloses a friction and gravity energy dissipation type bridge seismic stopper, comprising a steel base plate 1, a steel cover 2, a grooved steel block 3, a first small steel stopper 4, a second small steel stopper 5, a steel stopper 6, a steel ball 7, an outer transverse spring 8, a middle transverse spring 9, an inner transverse spring 10, a vertical spring 11, a heavy pulley 14, a steel corbel assembly, and a steel baffle assembly; this embodiment is divided into two parts: a core device and an auxiliary device, the auxiliary device comprising a steel corbel assembly and a steel baffle assembly; the core device is the device part except the auxiliary device, and the core device is a symmetrical device on the left and right sides.

[0032] like Figure 1-4As shown, when the device is placed naturally, the steel ball 7 is located at the midpoint of the core device in the horizontal direction, and the structure of the core device is symmetrical about the midpoint. The heavy pulley 14 is placed at the lowest point of the groove in the groove steel block 3. The outer transverse spring 8 passes through the rectangular opening 12 of the steel cover 2 to connect the steel baffle side plate 22 and the groove steel block 2, the middle steel spring 9 passes through the rectangular opening 12 of the steel cover 2 to connect the groove steel block 2 and the steel baffle 6, and the inner steel spring 10 connects the steel baffle 6 and the steel ball 7; in the auxiliary device, the steel corbel web 15, the steel corbel bottom plate 16, the steel corbel top plate 17, and the steel corbel side plates 18 constitute a steel corbel assembly, which is fixed above the side wall of the pier 26 of the bridge to support the core device; the steel baffle web 20, the steel baffle top plate 21, and the steel baffle side plates 22 constitute a steel baffle assembly, which is fixed below the main beam 24 of the bridge.

[0033] Construction method: First, weld and fix the steel corbel web 15, steel corbel bottom plate 16, steel corbel top plate 17, and steel corbel side plate 18 to form a steel corbel assembly, weld and fix the steel baffle web 20, steel baffle top plate 21, and steel baffle side plate 22 to form a steel baffle assembly, and then respectively fix them to the pier 26 and the main beam 24 with steel corbel bolts 19 and steel baffle bolts 23; then weld and fix the steel bottom plate 1 and the steel corbel top plate 17, and place the groove steel block 3, steel baffle 6 and steel ball 7 on the steel bottom plate 1 in turn, and use the outer layer transverse spring 8 to fix them. , middle-layer transverse spring 9 and inner-layer transverse spring 10 are welded to connect the steel baffle side plate 22, the groove steel block 3, the steel block 6 and the steel ball 7; then the first small steel block 4 and the second small steel block 5 are respectively welded and fixed to both sides of the highest point of the groove steel block 3 to ensure that the distance between the upper side of the small steel block and the lower surface of the top plate of the steel cover 2 is less than the outer diameter of the heavy pulley 14; finally, the steel cover 2 connected to the heavy pulley 14 by the vertical spring 11 is welded and fixed to the steel bottom plate 1 to ensure that the outer-layer transverse spring 8 and the middle-layer transverse spring 9 can pass through the rectangular openings 12 on both sides of the steel cover.

[0034] Working principle: When an earthquake occurs, the main beam 24 and the second main beam 25 of the bridge along the bridge direction will move relative to each other. When the main beam 24 moves, it will drive the steel baffle assembly composed of the steel baffle web 20, the steel baffle top plate 21, and the steel baffle side plate 22 to move, and the movement of the steel baffle assembly will drive the outer transverse spring 8 to undergo elastic deformation, thereby driving the groove steel block 3 to slide left and right. At this time, the heavy pulley 14 placed at the arc groove on the top of the groove steel block 3 will move upward along the arc groove. The first small steel stopper 4 and the second small steel stopper 5 will prevent the heavy sliding 14 from detaching from the groove steel block 3. The steel cover 2 can also prevent the groove steel block 3 from displacing too much and detaching from the steel bottom plate. At this time, part of the seismic energy is converted into the gravitational potential energy of the heavy pulley 14. The friction force generated by the groove steel block 3 and the steel bottom plate 1 and the steel cover 2 when sliding, and the friction force generated by the heavy pulley 14 and the groove steel block 3 when sliding can also consume part of the capacity, and the outer transverse spring 8 and the vertical spring 11 can buffer the seismic energy to a certain extent. Then, the sliding of the grooved steel block 3 will drive the elastic deformation of the middle-layer transverse spring 9, and then drive the sliding of the steel stopper 6. The sliding of the steel stopper 6 will drive the elastic deformation of the inner-layer steel spring 10 and drive the rolling of the steel ball 7. The steel cover 2 can prevent the steel stopper 6 from being displaced too much, and the track 13 can prevent the steel ball 7 from rolling around at will, thereby ensuring the safety and feasibility of the device. At this time, the steel ball 7 and the steel stopper 6 will generate friction with the steel bottom plate 1 during movement and consume part of the energy, and the middle-layer transverse spring 9 and the inner-layer transverse spring 10 can also buffer the earthquake energy to a certain extent.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings or directly or indirectly applied in related technical fields are also included in the patent protection scope of the present invention.

Claims

1. A friction and gravity energy dissipation bridge seismic stopper, characterized in that: The invention comprises a steel base plate (1), a groove steel block (3), a steel stopper (6), a steel ball (7), a transverse spring, a steel corbel assembly and a steel stopper assembly; the steel corbel assembly is fixed above the side wall of the bridge pier (26), and two steel stopper assemblies are fixed below the main beam (24); the steel base plate (1) is fixed to the top of the steel corbel assembly, groove steel blocks (3) are placed on both sides of the upper surface of the steel base plate (1), the steel ball (7) is placed in the middle of its upper surface, the steel stopper (6) is placed between the steel ball (7) and the groove steel block (3), and the three are connected by a transverse spring, and the outer wall of the groove steel block (3) and the steel stopper assembly are connected by a transverse spring; the groove steel block A concave arc groove is formed on the top of the groove steel block (3); a steel cover (2) is provided on the outside thereof, the steel cover (2) is in an inverted "concave" structure, the middle part of the lower surface of the top plate is connected to one end of the vertical spring (11), the other end of the vertical spring (11) is connected to a heavy pulley (14), and the heavy pulley (14) slides in cooperation with the arc groove on the top of the groove steel block (3); gaps are provided between the side plates on both sides of the steel cover (2) and the two side walls of the groove steel block (3), and the bottom of the side plates is fixed on the upper surface of the steel bottom plate (1); a track (13) with a concave arc cross section is formed in the middle part of the upper surface of the steel bottom plate (1), and the steel ball (7) slides in cooperation with the track (13).

2. The friction and gravity energy dissipation bridge anti-seismic stopper according to claim 1, characterized in that: A first small steel stopper (4) and a second small steel stopper (5) connected to the arc-shaped groove at the top of the groove steel block (3) are provided on both sides thereof, and the gap between the top of the first small steel stopper (4) and the second small steel stopper (5) and the lower surface of the top plate of the steel cover (2) is smaller than the outer diameter of the heavy pulley (14).

3. The friction and gravity energy dissipation bridge anti-seismic stopper according to claim 2, characterized in that: A rectangular opening (12) for the transverse spring to pass through is provided below the side walls of the side plates on both sides of the steel cover (2).

4. The friction and gravity energy dissipation bridge anti-seismic stopper according to claim 1, characterized in that: The steel corbel assembly comprises a steel corbel web (15), a steel corbel bottom plate (16), a steel corbel top plate (17), and a steel corbel side plate (18); the steel corbel side plate (18) is fixed to the upper side wall of the pier (26) by means of steel corbel bolts (19); the steel corbel top plate (17) and the steel corbel bottom plate (16) are horizontally placed, and two mutually parallel steel corbel webs (15) are vertically welded therebetween; the right side of the steel corbel side plate (18) is respectively connected to the steel corbel top plate (17), the steel corbel bottom plate (16), and one side of the steel corbel web (15); and the steel bottom plate (1) is fixed to the steel corbel top plate (17).

5. The friction and gravity energy dissipation bridge anti-seismic stopper according to claim 1, characterized in that: The steel baffle assembly comprises a steel baffle web (20), a steel baffle top plate (21), and steel baffle side plates (22); the steel baffle top plate (21) is fixed to the bottom of the main beam (24) by steel baffle bolts (23); the steel baffle side plates (22) are placed vertically and are welded and fixed to two mutually parallel steel baffle webs (20) and steel baffle top plates (21).

6. The friction and gravity energy dissipation bridge anti-seismic stopper according to claim 5, characterized in that: The transverse spring comprises an outer transverse spring (8), a middle transverse spring (9) and an inner transverse spring (10); the outer side wall of the groove steel block (3) is connected to the steel baffle side plate (22) via the outer transverse spring (8); the inner side wall of the groove steel block (3) is connected to the steel baffle (6) via the middle transverse spring (9); and the steel baffle (6) is connected to the steel ball (7) via the inner transverse spring (10).

7. A construction method for the friction and gravity energy dissipation bridge seismic stopper as claimed in claim 1, characterized in that: The method comprises the following steps: firstly, welding and fixing a steel corbel web plate (15), a steel corbel bottom plate (16), a steel corbel top plate (17), and a steel corbel side plate (18) to form a steel corbel assembly; then, welding and fixing a steel baffle web plate (20), a steel baffle top plate (21), and a steel baffle side plate (22) to form a steel baffle assembly; and then respectively fixing them to a pier (26) and a main beam (24) with steel corbel bolts (19) and steel baffle bolts (23); then, welding and fixing a steel bottom plate (1) and a steel corbel top plate (17); and sequentially placing a groove steel block (3), a steel baffle block (6), and a steel ball (7) on the steel bottom plate (1); and fixing them with an outer transverse spring (8 ), the middle transverse spring (9) and the inner transverse spring (10) are welded to connect the steel baffle side plate (22), the groove steel block (3), the steel block (6) and the steel ball (7); then the first small steel block (4) and the second small steel block (5) are respectively welded to the two sides of the highest point of the groove steel block (3), ensuring that the distance between the upper side of the small steel block and the lower surface of the top plate of the steel cover (2) is less than the outer diameter of the heavy pulley (14); finally, the steel cover (2) connected to the heavy pulley (14) by the vertical spring (11) is welded to the steel bottom plate (1), and it is ensured that the outer transverse spring (8) and the middle transverse spring (9) can pass through the rectangular openings (12) on both sides of the steel cover.

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