A bridge seismic installation structure

Abstract

The utility model discloses a seismic mounting structure for a bridge, comprising a seismic mounting base and a metal anti-slipping cylinder A arranged in the middle section of the top of the seismic mounting base, the metal anti-slipping cylinder A is fixedly connected to the seismic mounting base by welding, a metal anti-slipping cylinder B is symmetrically arranged on the upper side of the metal anti-slipping cylinder A, and a seismic top seat is welded on the top of the metal anti-slipping cylinder B, and a novel air pressure buffer device is added between the seismic mounting base and the seismic top seat near the front and rear ends of the seismic mounting structure of the bridge, when the bridge is compressed and loaded, pressure is applied to the seismic top seat, so that the seismic top seat moves downward, and the seismic rubber bearing can produce seismic resistance and buffering effects at this time, and the novel air pressure buffer device can further play a seismic resistance and pressure buffering role by means of compressed air, so that the compressive and weight-bearing capacity of the seismic mounting structure of the bridge can be increased, and the seismic effect of the entire seismic mounting structure of the bridge can be increased.

Description

Technical Field

[0001] The utility model belongs to the technical field related to bridges, and in particular relates to an earthquake-resistant installation structure for bridges. Background Art

[0002] The seismic mounting structure of a bridge refers to a measure adopted in the design and construction of a bridge to enhance the seismic performance of the bridge. Among them, the seismic rubber bearing is a common seismic device. The seismic rubber bearing is a structural bearing made of rubber material, which is usually placed on the bridge beam and between the piers. Its main function is to effectively reduce shock, isolate and dissipate energy when an earthquake occurs through its special material and structural characteristics.

[0003] However, the seismic mounting structure of the bridge mainly uses seismic rubber bearings to buffer, isolate and disperse seismic loads. However, the buffering effect of the seismic rubber bearings on the seismic mounting structure of the bridge has its limits. When the external force acting on the seismic rubber bearings is too large, the ability of the seismic rubber bearings to buffer, isolate and disperse the force loads will exceed the limit, which will cause the buffering, isolation and dispersion of the force loads of the seismic rubber bearings to fail to meet the seismic buffering requirements, which will easily damage the bridge. Utility Model Content

[0004] The purpose of the utility model is to provide a seismic mounting structure for a bridge to solve the problem raised in the above-mentioned background technology that when the external force acting on the seismic rubber bearing is too large, the ability of the seismic rubber bearing to buffer, isolate and disperse the force load will exceed the limit, which will then cause the seismic rubber bearing to fail to meet the seismic buffering requirements, which will easily damage the bridge.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bridge seismic installation structure, comprising a seismic base and a metal anti-slip cylinder A arranged in the middle section of the top of the seismic base, the metal anti-slip cylinder A and the seismic base are fixedly connected by welding, a metal anti-slip cylinder B is symmetrically arranged on the upper side of the metal anti-slip cylinder A, a seismic top seat is welded on the top of the metal anti-slip cylinder B, and a seismic rubber bearing is connected between the metal anti-slip cylinder A and the metal anti-slip cylinder B, and a pneumatic buffer device is connected between the seismic base and the seismic top seat near the front and rear ends;

[0006] The pneumatic buffer device includes a fixed plate, a metal pneumatic cylinder, a pneumatic buffer pillar and a tray. The fixed plate is welded to the outer wall of the top end of the seismic-resistant base. A metal pneumatic cylinder is vertically welded to the top end of the fixed plate, and the opening direction of the metal pneumatic cylinder faces upward. A pneumatic buffer pillar is inserted into the metal pneumatic cylinder from top to bottom. A tray is welded to the top end of the pneumatic buffer pillar, and the tray is attached to the outer wall of the bottom end of the seismic-resistant top seat.

[0007] Preferably, the pneumatic buffer device also includes a pneumatic buffer plunger, which is fixed at the bottom of the pneumatic buffer pillar. The circular outer wall of the pneumatic buffer plunger is tightly fitted with the circular inner wall of the metal pneumatic cylinder, and the pneumatic buffer plunger and the metal pneumatic cylinder have an interference fit. The pneumatic buffer plunger can drive the pneumatic buffer pillar to move up and down inside the metal pneumatic cylinder.

[0008] Preferably, an upper sealing plate is provided at the upper end of the seismic rubber bearing, and the upper sealing plate is attached to the bottom outer wall of the seismic top seat, and a lower sealing plate is provided at the lower end of the seismic rubber bearing, and the lower sealing plate is attached to the top outer wall of the seismic base.

[0009] Preferably, the seismic-resistant base is provided with metal connecting plates A near the front and rear sides and on the outer walls of the left and right ends, and the seismic-resistant top seat is provided with metal connecting plates B near the front and rear sides and on the outer walls of the left and right ends, and the four metal connecting plates A and the four metal connecting plates B are opposite to each other.

[0010] Preferably, the metal connecting plate B is provided with a through hole inside, a connecting screw is vertically welded on the top outer wall of the metal connecting plate A, and the top of the connecting screw passes through the through hole, and an anti-slip nut is sleeved on the external thread of the connecting screw near the top, and the anti-slip nut is located on the upper side of the top outer wall of the metal connecting plate B.

[0011] Preferably, the cross-sectional shape and area of ​​the metal anti-dropping tube A and the metal anti-dropping tube B are the same, the seismic-resistant base and the seismic-resistant top seat are both solid metal plates, and the seismic-resistant base and the seismic-resistant top seat are parallel to each other.

[0012] Compared with the prior art, the utility model provides a bridge seismic installation structure having the following features:

[0013] Beneficial effects:

[0014] The utility model adds a novel air pressure buffer device between the seismic base and the seismic top seat near the front and rear ends of the seismic mounting structure of the bridge, and the bottom of the air pressure buffer device is welded to the outer wall of the top end of the seismic base, and the top of the air pressure buffer device is lifted on the outer wall of the bottom end of the seismic top seat, so that it can produce a supporting and buffering effect between the seismic base and the seismic top seat, and will not hinder the normal downward movement of the seismic top seat after being compressed. When the bridge is compressed and weighed, pressure will be applied to the seismic top seat to make the seismic top seat move downward. At this time, the seismic rubber bearing can produce seismic resistance and buffering effects, and the novel air pressure buffer device can further play a seismic resistance and buffering pressure role by means of compressed air, which can increase the compressive and weight-bearing capacity of the seismic mounting structure of the bridge, and can increase the seismic effect of the entire seismic mounting structure of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the external three-dimensional structure of a bridge earthquake-resistant installation structure.

[0016] Figure 2 The utility model is a schematic diagram of the external plane structure of a bridge earthquake-resistant installation structure.

[0017] Figure 3 The utility model is a schematic diagram of the internal cross-sectional structure of a bridge earthquake-resistant installation structure.

[0018] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the air pressure buffer device of the utility model.

[0019] In the figure: 1. earthquake-resistant base; 2. earthquake-resistant top seat; 3. metal anti-dropping cylinder A; 4. metal anti-dropping cylinder B; 5. air pressure buffer device; 6. earthquake-resistant rubber support; 7. metal connecting plate A; 8. metal connecting plate B; 9. anti-dropping nut; 10. connecting screw; 11. upper sealing plate; 12. lower sealing plate; 13. fixing plate; 14. metal air pressure cylinder; 15. air pressure buffer plunger; 16. air pressure buffer support; 17. tray. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1-4A bridge seismic installation structure shown in the figure comprises a seismic base 1 and a metal anti-slipping cylinder A3 arranged in the middle section of the top of the seismic base 1, the metal anti-slipping cylinder A3 is fixedly connected to the seismic base 1 by welding, a metal anti-slipping cylinder B4 is symmetrically arranged on the upper side of the metal anti-slipping cylinder A3, a seismic top seat 2 is welded on the top of the metal anti-slipping cylinder B4, and a seismic rubber bearing 6 is connected between the metal anti-slipping cylinder A3 and the metal anti-slipping cylinder B4, an air pressure buffer device 5 is connected between the seismic base 1 and the seismic top seat 2 near the front and rear ends, an upper sealing plate 11 is arranged on the upper end of the seismic rubber bearing 6, and The upper sealing plate 11 is attached to the outer wall of the bottom of the seismic top seat 2, the lower end of the seismic rubber support 6 is provided with a lower sealing plate 12, and the lower sealing plate 12 is attached to the top outer wall of the seismic base 1, the seismic base 1 is provided with metal connecting plates A7 near the front and rear sides and on the outer walls of the left and right ends, the seismic top seat 2 is provided with metal connecting plates B8 near the front and rear sides and on the outer walls of the left and right ends, and the four metal connecting plates A7 are opposite to the four metal connecting plates B8, the metal connecting plates B8 are provided with perforations inside, and the top outer wall of the metal connecting plate A7 is vertically welded with connecting plates The screw rod 10 is connected to the bridge pier by a screw rod 10, and the top end of the connecting screw rod 10 passes through a through hole, and the connecting screw rod 10 is sleeved with an anti-slip nut 9 near the top external thread, and the anti-slip nut 9 is located on the upper side of the top outer wall of the metal connecting plate B8, the cross-sectional shape and area of ​​the metal anti-slip tube A3 and the metal anti-slip tube B4 are the same, the earthquake-resistant base 1 and the earthquake-resistant top seat 2 are both solid metal plates, and the earthquake-resistant base 1 and the earthquake-resistant top seat 2 are parallel to each other. When installing and using the earthquake-resistant installation structure of the bridge, the earthquake-resistant base 1 needs to be installed on the bridge pier by special bolts first, and then the bottom end of the metal anti-slip tube A3 needs to be fixed with a special bolt. Place the lower sealing plate 12 inside, and place the seismic rubber bearing 6 on the lower sealing plate 12, and then place the upper sealing plate 11 on the top of the seismic rubber bearing 6, then lift the seismic top seat 2 and make the opening of the metal anti-detachment tube B4 face downward to align with the seismic rubber bearing 6, and then put the metal anti-detachment tube B4 onto the outside of the upper sealing plate 11 and the seismic rubber bearing 6. At this time, the seismic top seat 2 fits on the outer wall of the bottom end of the bridge, and then the seismic top seat 2 can be installed on the bottom of the bridge by special bolts, and then the seismic mounting structure of the bridge can be put into use normally.

[0022] like Figure 1 , Figure 2 and Figure 4As shown, the air pressure buffer device 5 includes a fixed plate 13, a metal air pressure cylinder 14, an air pressure buffer pillar 16 and a tray 17. The fixed plate 13 is welded on the outer wall of the top end of the earthquake-resistant base 1. The metal air pressure cylinder 14 is vertically welded on the top end of the fixed plate 13, and the opening direction of the metal air pressure cylinder 14 is upward. The air pressure buffer pillar 16 is inserted from top to bottom inside the metal air pressure cylinder 14. The top of the air pressure buffer pillar 16 is welded with a tray 17, and the tray 17 is fitted on the outer wall of the bottom end of the earthquake-resistant top seat 2. The air pressure buffer device 5 also includes an air pressure buffer plunger 15. The air pressure buffer plunger 15 is fixed to the bottom of the air pressure buffer pillar 16. The circular outer wall of the air pressure buffer plunger 15 is tightly fitted with the circular inner wall of the metal air pressure cylinder 14, and the air pressure buffer plunger 15 and the metal air pressure cylinder 14 have an interference fit. The air pressure buffer plunger 15 can drive the air pressure buffer pillar 1 6 moves up and down inside the metal air cylinder 14. When the bridge is under pressure and weight, it will press down the seismic top seat 2. When the seismic top seat 2 is pressed down, it will cause the seismic rubber bearing 6 to produce pressure deformation, which will produce seismic and buffering effects. At the same time, when the seismic top seat 2 is pressed down, it will push the air pressure buffer support 16 downward through the tray 17, and the air pressure buffer plunger 15 at the bottom of the air pressure buffer support 16 will move downward in the metal air cylinder 14. Because the air pressure buffer plunger 15 and the metal air cylinder 14 have an interference fit, the air pressure buffer support 16 will compress the air inside the metal air cylinder 14 when driving the air pressure buffer plunger 15 to descend. The compressed air will produce a strong reaction force, which can help the seismic rubber bearing 6 to resist the pressure together, thereby increasing the seismic effect of the seismic mounting structure of the bridge and the buffering pressure gravity effect.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A seismic mounting structure for a bridge, comprising a seismic base (1) and a metal anti-slip cylinder A (3) arranged in the middle section of the top of the seismic base (1), wherein the metal anti-slip cylinder A (3) is fixedly connected to the seismic base (1) by welding, a metal anti-slip cylinder B (4) is symmetrically arranged on the upper side of the metal anti-slip cylinder A (3), a seismic top seat (2) is welded on the top of the metal anti-slip cylinder B (4), and a seismic rubber bearing (6) is connected between the metal anti-slip cylinder A (3) and the metal anti-slip cylinder B (4), characterized in that: A pneumatic buffer device (5) is connected between the anti-vibration base (1) and the anti-vibration top seat (2) near the front and rear ends; The pneumatic buffer device (5) comprises a fixed plate (13), a metal pneumatic cylinder (14), a pneumatic buffer pillar (16) and a tray (17); the fixed plate (13) is welded to the outer wall of the top end of the earthquake-resistant base (1); the metal pneumatic cylinder (14) is vertically welded to the top end of the fixed plate (13), and the opening direction of the metal pneumatic cylinder (14) faces upward; the pneumatic buffer pillar (16) is inserted into the metal pneumatic cylinder (14) from top to bottom; the top end of the pneumatic buffer pillar (16) is welded to the tray (17), and the tray (17) is attached to the outer wall of the bottom end of the earthquake-resistant top seat (2).

2. The bridge seismic mounting structure according to claim 1, characterized in that: The air pressure buffer device (5) also includes an air pressure buffer plunger (15), which is fixed to the bottom of the air pressure buffer pillar (16). The circular outer wall of the air pressure buffer plunger (15) is tightly fitted with the circular inner wall of the metal air pressure cylinder (14), and the air pressure buffer plunger (15) and the metal air pressure cylinder (14) are interference fit. The air pressure buffer plunger (15) can drive the air pressure buffer pillar (16) to move up and down inside the metal air pressure cylinder (14).

3. The bridge seismic mounting structure according to claim 1, characterized in that: An upper sealing plate (11) is provided at the upper end of the anti-seismic rubber support (6), and the upper sealing plate (11) is fitted on the bottom outer wall of the anti-seismic top seat (2); a lower sealing plate (12) is provided at the lower end of the anti-seismic rubber support (6), and the lower sealing plate (12) is fitted on the top outer wall of the anti-seismic base (1).

4. The bridge seismic mounting structure according to claim 1, characterized in that: The anti-seismic base (1) is provided with metal connecting plates A (7) near the front and rear sides and on the outer walls of the left and right ends, and the anti-seismic top seat (2) is provided with metal connecting plates B (8) near the front and rear sides and on the outer walls of the left and right ends, and the four metal connecting plates A (7) and the four metal connecting plates B (8) are opposite to each other.

5. The bridge seismic mounting structure according to claim 4, characterized in that: The metal connecting plate B (8) is provided with a through hole inside, a connecting screw (10) is vertically welded on the top outer wall of the metal connecting plate A (7), and the top end of the connecting screw (10) passes through the through hole, and an anti-slip nut (9) is sleeved on the external thread near the top end of the connecting screw (10), and the anti-slip nut (9) is located on the upper side of the top outer wall of the metal connecting plate B (8).

6. The bridge seismic mounting structure according to claim 1, characterized in that: The cross-sectional shape and area of ​​the metal anti-slip tube A (3) and the metal anti-slip tube B (4) are the same; the anti-seismic base (1) and the anti-seismic top seat (2) are both solid metal plates; and the anti-seismic base (1) and the anti-seismic top seat (2) are parallel to each other.

Images