Anti-seismic structure for municipal bridge

Abstract

The utility model relates to the technical field of bridge seismic resistance, and discloses an anti-seismic structure for a municipal bridge, which comprises a top seat, a shock absorber is arranged at the lower end of the top seat, a base is arranged at the lower end of the shock absorber, and a sealing sleeve is arranged on the outer side of the shock absorber. According to the anti-seismic structure for the municipal bridge, the second viscous damper between the upper base and the lower base, the spring and the limiting sleeve cooperatively operate, the earthquake impact force can be powerfully buffered in the vertical direction, the spring provides reliable elastic support, the second viscous damper effectively consumes energy, the stability of the bridge structure under the action of vertical earthquake force is guaranteed, and the anti-seismic effect is good. A first rotating rod, a second rotating rod, a first side plate and a third viscous damper are matched, a third rotating rod, a fourth rotating rod, a second side plate and a fourth viscous damper are matched, earthquake energy can be dispersed and consumed, earthquake force in the vertical direction is borne, the rotating rods rotate to drive the side plate to extrude the viscous dampers, and the viscous dampers are driven to vibrate. Earthquake energy is converted into heat energy to be consumed, and damage of earthquakes to bridges is reduced in an all-around mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge seismic technology field, concretely is a kind of seismic structure for municipal bridge. BACKGROUND

[0002] As the key component of urban traffic network, the safety and stability of municipal bridge are crucial when facing earthquake disaster. With the acceleration of urbanization, the number of municipal bridges is increasing, and they are distributed in various complex geographical environments and geological conditions.

[0003] In earthquake-prone areas, the previous seismic structure often focuses on a single direction or simple shock absorption method, which is difficult to effectively cope with the complex forces generated by seismic waves in multiple directions at the same time. Some early seismic designs only have simple buffer devices in the vertical or horizontal direction, which is insufficient to resist the coupling effect of vertical and horizontal forces during an earthquake. Therefore, a seismic structure for municipal bridge is proposed.

[0004] Chinese utility model patent publication No. CN 221421664 U discloses a seismic device for municipal bridge. When the top plate is shaken, it transmits the vibration to the movable block, which moves up and down. When the movable block moves, the first damping rod absorbs and counteracts the vibration on the movable block. At the same time, the movable block pushes the two support plates to move in opposite directions through the connecting rod. When the two support plates move, they stretch the first damping rod, and then the first damping rod contracts, returning the two support plates to their original positions. At the same time, the two support plates stretch the extension spring, and then the extension spring contracts, improving the stability of the buffer assembly and enhancing the buffering effect on the bridge. This further absorbs and counteracts the vibration, achieving high-strength compression resistance and effectively buffering the bridge. However, this seismic device for municipal bridge cannot buffer the horizontal force, and the seismic effect is insufficient. Moreover, the seismic device has a large volume, which is not conducive to deployment. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a seismic structure for municipal bridge, which effectively solves the problems in the prior art.

[0006] The technical solution adopted by the utility model is as follows: a seismic structure for municipal bridge, comprising a top seat, a shock absorber is arranged at the lower end of the top seat, a base is arranged at the lower end of the shock absorber, and a sealing sleeve is arranged on the outer side of the shock absorber.

[0007] The top seat comprises a mounting seat one, a fixed plate one, a sliding rod one, a fixed seat one and a viscous damper one. The lower end of the mounting seat is provided with a fixed plate one, the center of the fixed plate one is provided with a sliding rod one, and the lower end of the mounting seat is fixedly connected with a fixed seat one on both sides. The inner side of the fixed seat one is fixedly connected with a viscous damper one.

[0008] The shock absorber comprises an upper seat, a sliding block one, a viscous damper two, a limiting sleeve, a spring, a lower seat, a rotating rod one, a rotating rod two, a side plate one, a viscous damper three, a rotating rod three, a rotating rod four, a side plate two and a viscous damper four, the upper end of the upper seat is provided with the sliding block one, the lower side of the upper seat is provided with the lower seat, the viscous damper two is arranged between the lower seat and the upper seat, the upper and lower ends of the viscous damper two are fixedly connected with the limiting sleeve, the limiting sleeve is fixedly connected with the spring, the lower end of the upper seat is rotationally connected with one end of the rotating rod one, the upper end of the lower seat is rotationally connected with one end of the rotating rod two, the other ends of the rotating rod one and the rotating rod two are rotationally connected with the outer side of the side plate one, the inner side of the side plate one is fixedly connected with the viscous damper three, the lower end of the upper seat is rotationally connected with one end of the rotating rod three, the upper end of the lower seat is rotationally connected with one end of the rotating rod four, the other ends of the rotating rod three and the rotating rod four are rotationally connected with the outer side of the side plate two, the inner side of the side plate two is fixedly connected with the viscous damper four, and the lower end of the lower seat is provided with a sliding block two.

[0009] Preferably, the base comprises a mounting seat two, a fixed plate two, a sliding rod two, a fixed seat two and a viscous damper five, the upper end of the mounting seat two is provided with the fixed plate two and the fixed seat two, the center of the fixed plate two is fixedly connected with the sliding rod two, and the inner side of the fixed seat two is fixedly connected with the viscous damper five.

[0010] Through the above technical scheme, the mounting seat one in the top seat cooperates with the sliding rod one and the viscous damper one, can effectively limit the sliding range of the sliding block one when the earthquake occurs, consumes energy through the viscous damper one, reduces the displacement of the bridge superstructure, and enhances the anti-seismic stability.

[0011] Preferably, the sliding block one and the sliding block two are perpendicular to each other, the sliding rod one and the sliding block one are in sliding connection, and the two sides of the sliding block one are fixedly connected with the viscous damper one.

[0012] Through the above technical scheme, the base and the top seat cooperate with each other to reduce the horizontal displacement between the bridge deck and the pier when the earthquake occurs.

[0013] Preferably, the sliding rod two and the sliding block two are in sliding connection, and the viscous damper five and the sliding block two are in fixed connection.

[0014] Through the above technical scheme, the combination of the mounting seat two, the fixed plate two, the sliding rod two and the fixed seat two of the base and the viscous damper five cooperates with the top seat to reduce the horizontal displacement between the pier and the bridge deck.

[0015] Preferably, the rotating rod one, the rotating rod two and the side plate one are provided with two groups of symmetrical and same structures and are fixedly connected through two side viscous dampers three, and the rotating rod three, the rotating rod four and the side plate two are provided with two groups of symmetrical and same structures and are fixedly connected through two viscous dampers four.

[0016] Through the above technical solution, the combination of viscous damper 2, spring and limiting sleeve between the upper and lower seats can effectively buffer the seismic impact force in the vertical direction. The spring can provide elastic support, and viscous damper 2 consumes energy. At the same time, the setting of rotating rod 1, rotating rod 2, side plate 1 and viscous damper 3, as well as rotating rod 3, rotating rod 4, side plate 2 and viscous damper 4, disperses and consumes seismic energy in multiple dimensions. When the bridge is subjected to seismic force in the vertical direction, the rotation of the rotating rod drives the side plate to squeeze the viscous damper, converting the seismic energy into heat energy and consuming it, effectively reducing the damage of earthquakes to the bridge.

[0017] Preferably, the two viscous dampers three are disposed between the two viscous dampers four.

[0018] The above technical solution results in a shock absorber with a compact structure, small size, and easy deployment.

[0019] Preferably, the sealing sleeve is made of fluororubber and is disposed between the upper seat and the lower seat.

[0020] Through the above technical solution, the sealing sleeve is made of fluororubber, which has good weather resistance, corrosion resistance and sealing performance. It can effectively protect the internal components of the shock absorber from the influence of external environmental factors, extend the service life of the shock absorber and ensure the long-term stable operation of the seismic structure.

[0021] Compared with the prior art, this utility model provides a seismic-resistant structure for municipal bridges, which has the following beneficial effects:

[0022] 1. The municipal bridge uses an earthquake-resistant structure. The mounting base, fixing plate, sliding rod, fixing base, and viscous damper work together to limit the sliding range of the sliding block during an earthquake. The viscous damper efficiently dissipates energy and reduces the displacement of the bridge superstructure. The base and top seat fit tightly together, which can effectively reduce the horizontal displacement of the piers and the bridge deck, enhance the stability of the connection between the piers and the bridge deck, prevent the bridge structure from deforming or being damaged due to excessive horizontal displacement, and ensure the integrity and safety of the overall bridge structure.

[0023] 2、The municipal bridge anti-seismic structure, the viscous damper two between the upper seat and the lower seat, the spring and the limiting sleeve cooperate and work, can effectively buffer the earthquake impact force in the vertical direction, the spring provides reliable elastic support, the viscous damper two effectively consumes energy, guarantees the stability of the bridge structure under the action of the vertical earthquake force, reduces the damage of the vertical vibration to the bridge structure, the rotary rod one, the rotary rod two, the side plate one, the viscous damper three and the rotary rod three, the rotary rod four, the side plate two and the viscous damper four are matched, can disperse and consume the earthquake energy, under the action of the earthquake force in the up-down direction, the side plate is extruded by the viscous damper through the rotation of the rotary rod, the earthquake energy is converted into heat energy and consumed, the damage of the earthquake to the bridge is reduced in all directions, the adaptability of the bridge in the complex earthquake environment is enhanced, the layout of the two viscous dampers three between the two viscous dampers four makes the shock absorber structure compact and small in size. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional structure diagram of the utility model Figure 1 ;

[0025] Figure 2 It is a shock absorber and sealing sleeve split structure schematic view of the utility model

[0026] Figure 3 It is a top seat, base and shock absorber split structure schematic view of the utility model Figure 1 ;

[0027] Figure 4 It is a top seat, base and shock absorber split structure schematic view of the utility model Figure 2 ;

[0028] Figure 5 It is a top seat, base and shock absorber split structure schematic view of the utility model Figure 3 .

[0029] 1, top seat;101, mounting seat one;102, fixed plate one;103, sliding rod one;104, fixed seat one;105, viscous damper one;2, shock absorber;201, upper seat;202, sliding block one;203, viscous damper two;204, limiting sleeve;205, spring;206, lower seat;207, rotary rod one;208, rotary rod two;209, side plate one;210, viscous damper three;211, rotary rod three;212, rotary rod four;213, side plate two;214, viscous damper four;215, sliding block two;3, base;301, mounting seat two;302, fixed plate two;303, sliding rod two;304, fixed seat two;305, viscous damper five;4, sealing sleeve. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0031] Embodiment one: as shown in the present application provides a kind of municipal bridge anti-seismic structure, including top seat 1, shock absorber 2 is arranged in the lower end of top seat 1, base 3 is arranged in the lower end of shock absorber 2, sealing sleeve 4 is arranged in the outer side of shock absorber 2; Figures 1-5

[0032] Top seat 1 includes mounting seat one 101, fixed plate one 102, sliding rod one 103, fixed seat one 104 and viscous damper one 105, fixed plate one 102 is arranged in the lower end of mounting seat one 101, sliding rod one 103 is arranged in the center of fixed plate one 102, fixed seat one 104 is fixedly connected on both sides of the lower end of mounting seat one 101, viscous damper one 105 is fixedly connected in the inner side of fixed seat one 104;

[0033] Shock absorber 2 includes upper seat 201, sliding block one 202, viscous damper two 203, limiting sleeve 204, spring 205, lower seat 206, rotating rod one 207, rotating rod two 208, side plate one 209, viscous damper three 210, rotating rod three 211, rotating rod four 212, side plate two 213 and viscous damper four 214, sliding block one 202 is arranged in the upper end of upper seat 201, lower seat 206 is arranged below upper seat 201, viscous damper two 203 is arranged between lower seat 206 and upper seat 201, limiting sleeve 204 is fixedly connected on the upper and lower ends of viscous damper two 203, spring 205 is fixedly connected between limiting sleeve 204, one end of rotating rod one 207 is rotationally connected to the lower end of upper seat 201, one end of rotating rod two 208 is rotationally connected to the upper end of lower seat 206, the other end of rotating rod one 207 and rotating rod two 208 are both rotationally connected to the outer side of side plate one 209, viscous damper three 210 is fixedly connected to the inner side of side plate one 209, one end of rotating rod three 211 is rotationally connected to the lower end of upper seat 201, one end of rotating rod four 212 is rotationally connected to the upper end of lower seat 206, the other end of rotating rod three 211 and rotating rod four 212 are both rotationally connected to the outer side of side plate two 213, viscous damper four 214 is fixedly connected to the inner side of side plate two 213, sliding block two 215 is arranged in the lower end of lower seat 206.

[0034] ​Specifically, the base 3 comprises a mounting seat two 301, a fixed plate two 302, a sliding rod two 303, a fixed seat two 304 and a viscous damper five 305, the upper end of the mounting seat two 301 is provided with the fixed plate two 302 and the fixed seat two 304, the center of the fixed plate two 302 is fixedly connected with the sliding rod two 303, and the inner side of the fixed seat two 304 is fixedly connected with the viscous damper five 305. The mounting seat one 101 in the top seat 1 cooperates with the fixed plate one 102, the sliding rod one 103 and the viscous damper one 105, can effectively limit the sliding range of the sliding block one 202 when the earthquake occurs, consume energy through the viscous damper one 105, reduce the displacement of the bridge superstructure, and enhance the anti-seismic stability.

[0035] Specifically, the sliding block one 202 and the sliding block two 215 are perpendicular to each other, the sliding rod one 103 and the sliding block one 202 are in sliding connection, and the sliding block one 202 is fixedly connected with the viscous damper one 105 on both sides. The base 3 cooperates with the top seat 1 to reduce the horizontal displacement between the bridge deck and the pier when the earthquake occurs.

[0036] Embodiment two: as shown in the figure, as an improvement on the last embodiment. Figures 2-5

[0037] Specifically, the sliding rod two 303 and the sliding block two 215 are in sliding connection, and the viscous damper five 305 and the sliding block two 215 are in fixed connection. The combination of the mounting seat two 301, the fixed plate two 302, the sliding rod two 303 and the fixed seat two 304 of the base 3 and the viscous damper five 305 cooperates with the top seat 1 to reduce the horizontal displacement between the pier and the bridge deck.

[0038] Specifically, the rotating rod one 207, the rotating rod two 208 and the side plate one 209 are provided with two groups of symmetrical and same structures and are fixedly connected through two side viscous dampers three 210, and the rotating rod three 211, the rotating rod four 212 and the side plate two 213 are provided with two groups of symmetrical and same structures and are fixedly connected through two viscous dampers four 214. The combination of the viscous damper two 203, the spring 205 and the limiting sleeve 204 between the upper seat 201 and the lower seat 206 can effectively buffer the earthquake impact force in the vertical direction, the spring 205 can provide elastic support, and the viscous damper two 203 consumes energy. At the same time, the rotating rod one 207, the rotating rod two 208, the side plate one 209, the viscous damper three 210, the rotating rod three 211, the rotating rod four 212, the side plate two 213 and the viscous damper four 214 are arranged to disperse and consume earthquake energy in multiple dimensions. When the bridge is subjected to the vertical earthquake force, the rotating rod drives the side plate to extrude the viscous damper through rotation, converts the earthquake energy into heat energy and consumes it, thereby effectively reducing the damage of the earthquake to the bridge.

[0039] ​Specifically, two viscous dampers three 210 are arranged between two viscous dampers four 214.

[0040] Specifically, the sealing sleeve 4 is made of fluororubber, and the sealing sleeve 4 is arranged between the upper seat 201 and the lower seat 206.

[0041] Working principle: in use, under normal circumstances, the top seat 1 is stably connected with the upper structure of the bridge through the mounting seat one 101, and the bottom seat 3 is installed on the lower support structure such as a pier, so that the shock absorber 2 is in a stable and static state, and the spring 205 maintains a certain pre-compression force, and all parts cooperatively maintain the balance and stability of the whole structure; when an earthquake occurs, the seismic wave will simultaneously generate vertical and horizontal action forces and transmit them to the bridge structure. In the vertical direction, the viscous damper two 203, the spring 205 and the limiting sleeve 204 between the upper seat 201 and the lower seat 206 begin to work, the earthquake force makes the upper seat 201 and the lower seat 206 produce relative displacement, the spring 205 is first compressed or stretched, and the elastic potential energy is used to buffer part of the earthquake energy, thereby reducing the instantaneous impact force on the bridge structure, at the same time, the viscous damper two 203 converts the earthquake energy into heat energy for consumption according to its own characteristics through the damping action of the internal fluid, further reduces the vertical vibration amplitude, and protects the stability of the bridge under the action of the vertical earthquake force; in the horizontal direction, the slider one 202 of the top seat 1 slides along the slide rod one 103, at this time, the viscous damper one 105 generates damping resistance to the sliding of the slider one 202, consumes the horizontal earthquake energy, and limits the horizontal displacement range of the top seat 1, so as to reduce the horizontal swing amplitude of the upper structure of the bridge, the slider two 215 in the bottom seat 3 slides along the slide rod two 303, and the viscous damper five 305 in the inner side of the fixed seat two 304 also exerts damping action on the slider two 215, which cooperates with the top seat 1 to reduce the relative displacement between the pier and the bridge deck in the horizontal direction, thereby enhancing the horizontal seismic capacity of the whole bridge structure, and avoiding damage to the connection part between the bridge body and the pier due to excessive horizontal displacement.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-seismic structure for a municipal bridge comprising a top base (1), characterized in that: The top seat (1) is provided with a shock absorber (2) at the lower end, the shock absorber (2) is provided with a base (3) at the lower end, and the shock absorber (2) is provided with a sealing sleeve (4) on the outer side. The top seat (1) comprises a mounting seat one (101), a fixed plate one (102), a sliding rod one (103), a fixed seat one (104) and a viscous damper one (105), the fixed plate one (102) is arranged at the lower end of the mounting seat one (101), the sliding rod one (103) is arranged at the center of the fixed plate one (102), the fixed seat one (104) is fixedly connected to the both sides of the lower end of the mounting seat one (101), and the viscous damper one (105) is fixedly connected to the inner side of the fixed seat one (104). The shock absorber (2) comprises an upper seat (201), a sliding block one (202), a viscous damper two (203), a limiting sleeve (204), a spring (205), a lower seat (206), a rotating rod one (207), a rotating rod two (208), a side plate one (209), a viscous damper three (210), a rotating rod three (211), a rotating rod four (212), a side plate two (213) and a viscous damper four (214), the sliding block one (202) is arranged at the upper end of the upper seat (201), the lower seat (206) is arranged below the upper seat (201), the viscous damper two (203) is arranged between the upper seat (201) and the lower seat (206), the limiting sleeve (204) is fixedly connected to the upper and lower ends of the viscous damper two (203), the spring (205) is fixedly connected between the limiting sleeves (204), one end of the rotating rod one (207) is rotationally connected to the lower end of the upper seat (201), one end of the rotating rod two (208) is rotationally connected to the upper end of the lower seat (206), the other ends of the rotating rod one (207) and the rotating rod two (208) are rotationally connected to the outer side of the side plate one (209), the viscous damper three (210) is fixedly connected to the inner side of the side plate one (209), one end of the rotating rod three (211) is rotationally connected to the lower end of the upper seat (201), one end of the rotating rod four (212) is rotationally connected to the upper end of the lower seat (206), the other ends of the rotating rod three (211) and the rotating rod four (212) are rotationally connected to the outer side of the side plate two (213), the viscous damper four (214) is fixedly connected to the inner side of the side plate two (213), and the sliding block two (215) is arranged at the lower end of the lower seat (206).

2. The anti-seismic structure for municipal bridges according to claim 1, characterized in that: The base (3) comprises a mounting seat two (301), a fixed plate two (302), a sliding rod two (303), a fixed seat two (304) and a viscous damper five (305), the fixed plate two (302) and the fixed seat two (304) are arranged at the upper end of the mounting seat two (301), the sliding rod two (303) is fixedly connected to the center of the fixed plate two (302), and the viscous damper five (305) is fixedly connected to the inner side of the fixed seat two (304).

3. The anti-seismic structure for municipal bridges according to claim 1, characterized in that: The slider one (202) is perpendicular to the slider two (215), the slide rod one (103) is in sliding connection with the slider one (202), and the slider one (202) is in fixed connection with the viscous damper one (105) on both sides.

4. The anti-seismic structure for municipal bridges according to claim 2, characterized in that: The slide rod two (303) is in sliding connection with the slider two (215), and the viscous damper five (305) is in fixed connection with the slider two (215).

5. The anti-seismic structure for a municipal bridge according to claim 1, characterized in that: The rotating rod one (207) and the rotating rod two (208) are provided with two groups of symmetrical and same edge plates one (209) and are fixedly connected through two side viscous dampers three (210), the rotating rod three (211) and the rotating rod four (212) are provided with two groups of symmetrical and same edge plates two (213) and are fixedly connected through two viscous dampers four (214).

6. The anti-seismic structure for a municipal bridge according to claim 1, characterized by: The two viscous dampers three (210) are arranged between the two viscous dampers four (214).

7. The anti-seismic structure for a municipal bridge according to claim 1, characterized by: The sealing sleeve (4) is made of fluorine rubber, and the sealing sleeve (4) is arranged between the upper seat (201) and the lower seat (206).

Images