Bridge anti-seismic structure

Abstract

The utility model relates to the technical field of bridge anti-seismic, in particular to a bridge anti-seismic structure which comprises a pier and a bridge body installed on the pier, two anti-seismic mechanisms are arranged on the pier, each anti-seismic mechanism comprises a fixing frame fixedly installed on the pier, and supporting plates movably installed through rotating shafts are arranged on the two sides of each fixing frame. A plurality of sliding grooves are formed in the bottom of the bridge body, a sliding block movably installed through a rotating shaft is arranged at one end of the supporting plate, and the sliding block is in sliding connection with the sliding grooves. Through the arrangement of the anti-seismic mechanism, the viscous damper and the supporting frame formed by combining the fixing frame and the supporting plate are arranged in the anti-seismic mechanism, the movable frame body and the viscous damper are arranged between the pier and the bridge body in a combined mode to replace a spring elastic piece for seismic resistance, the structure is more stable, and the anti-seismic effect is good; the bridge body is not easy to fluctuate, and the stability of the bridge body is improved.

Description

Technical Field

[0001] The utility model relates to an earthquake-resistant structure, in particular to an earthquake-resistant structure of a bridge, and belongs to the technical field of bridge earthquake resistance. Background Art

[0002] A bridge generally refers to a structure erected across rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. To adapt to the modern, rapidly developing transportation industry, bridges have also been extended to buildings that are erected to cross mountain streams, poor geology, or to meet other transportation needs, making travel more convenient. A bridge generally consists of a superstructure, a substructure, supports, and ancillary structures. The superstructure, also known as the span structure, is the main structure for crossing obstacles; the substructure includes abutments, piers, and foundations; supports are force-transmitting devices installed at the supporting locations between the span structure and the piers or abutments; and ancillary structures include bridgehead slabs, conical slope protection, revetments, diversion projects, etc.

[0003] According to a bridge seismic resistance structure disclosed in a Chinese patent document with application number (CN202021123608.0), a bridge seismic resistance structure is disclosed, which belongs to the field of bridge engineering technology. It includes bridge piers, supports and bridge spans, and auxiliary bridge frames are symmetrically provided on both sides of the bridge spans. The upper sides of the auxiliary bridge frames are provided with slots connected to the outside world, and the slots are provided with angle deviation monitoring mechanisms, seismic resistance buffer mechanisms and reinforcement mechanisms. The utility model has the effect of enabling the bridge to have effective seismic resistance, and at the same time can monitor the deviation angle of the bridge, discover its danger in time, and provide a spare reinforcement support function in the event of damage to the supports.

[0004] Based on the search of the above patents and combined with the equipment found in the prior art, the above equipment is used.

[0005] The anti-seismic structure of the bridge is simple in construction and relies solely on spring elastic parts for anti-seismic buffering, which has a poor effect and is prone to cause fluctuations in the bridge, thereby causing instability of the bridge.

[0006] Therefore, it is urgent to improve to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of the utility model is to provide a bridge seismic-resistant structure. Through the setting of the seismic-resistant mechanism, a viscous damper and a support frame composed of a fixed frame and a support plate are provided in the seismic-resistant mechanism. The movable frame and the viscous damper are combined and arranged between the pier and the bridge body to replace the spring elastic parts for seismic resistance. The structure is more stable, the seismic-resistant effect is better, it is not easy to cause fluctuations in the bridge body, and the stability of the bridge body is improved.

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the present invention include: a bridge seismic resistance structure, including a bridge pier, and a bridge body installed on the bridge pier, two seismic resistance mechanisms are provided on the bridge pier, the seismic resistance mechanism includes a fixed frame fixedly installed on the bridge pier, support plates movably installed through a rotating shaft are provided on both sides of the fixed frame, a plurality of slide grooves are provided at the bottom of the bridge body, a slider movably installed through a rotating shaft is provided at one end of the support plate, the slider is slidably connected to the slide groove, a viscous damper is fixedly installed on one side of the support plate, and a second fixed plate movably connected to the bridge pier is fixedly installed on the bottom of the viscous damper.

[0009] Preferably, a first fixing plate movably connected to the second fixing plate is fixedly mounted on the inner wall of the pier, and a plurality of compression springs are mounted between the first fixing plate and the second fixing plate.

[0010] Preferably, a first mounting groove is provided on the sliding block, and a roller is movably installed inside the first mounting groove.

[0011] Preferably, two support blocks are symmetrically fixedly installed on the top of the pier, damping plates are fixedly installed on the surfaces of the support blocks, and grooves matching the support blocks are opened on the bridge body.

[0012] Preferably, a second mounting groove is provided on the support block, and a spring damping rod fixedly connected to the groove is fixedly installed inside the second mounting groove.

[0013] Preferably, the two seismic-resistant mechanisms are symmetrically distributed between the pier and the bridge body.

[0014] Preferably, the fixing frame and the supporting block are both fixedly mounted with a plurality of mounting steel plates, and the mounting steel plates are fixedly connected to the bridge piers via a plurality of bolts.

[0015] The present invention has at least the following beneficial effects: through the setting of the anti-seismic mechanism, the anti-seismic mechanism is provided with a viscous damper and a support frame composed of a fixed frame and a support plate, and the movable frame and the viscous damper are combined and arranged between the pier and the bridge body to replace the spring elastic parts for anti-seismic, its structure is more stable, the anti-seismic effect is better, it is not easy to cause fluctuations in the bridge body, and the stability of the bridge body is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the support plate structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the support block structure of the utility model;

[0021] Figure 5 For the utility model Figure 1 Enlarged view of point A in the middle.

[0022] In the figure, 1-bridge pier; 2-bridge; 3-seismic mechanism; 4-fixed frame; 5-support plate; 6-slide groove; 7-slider; 8-viscous damper; 9-first fixed plate; 10-second fixed plate; 11-compression spring; 12-first mounting groove; 13-roller; 14-support block; 15-damping plate; 16-second mounting groove; 17-spring shock absorber rod; 18-mounting steel plate; 19-bolt. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 5 As shown, this embodiment provides an embodiment of a bridge seismic resistant structure.

[0025] The scissor lift 5 is a kind of anti-seismic structure of a bridge, and its structure is as follows:

[0026] A first fixing plate 9, movably connected to a second fixing plate 10, is fixedly mounted on the inner wall of the pier 1. Multiple compression springs 11 are installed between the first and second fixing plates 9 and 10. A first mounting slot 12 is defined on the slider 7, within which a roller 13 is movably mounted. The arrangement of the first fixing plate 9 and the compression springs 11 allows multiple compression springs 11 to be positioned at the bottom of the second fixing plate 10 to support it. When the viscous damper 8 is squeezed, the compression springs 11 are indirectly compressed. When the shock absorption is complete, the compression springs 11 return, driving the viscous damper 8 back to its original position. The first mounting slot 12 and the roller 13 allow the slider 7 to be equipped with a rolling roller 13, which contacts the inner wall of the chute 6. During seismic operation, the slider 7 drives the roller 13 to move. The rolling of the roller 13 on the inner wall of the chute 6 reduces friction between the slider 7 and the chute 6, thereby reducing wear on the slider 7 and improving its durability.

[0027] Two support blocks 14 are symmetrically fixedly installed on the top of the bridge pier 1. Damping plates 15 are fixedly installed on the surface of the support blocks 14. A groove that matches the support blocks 14 is provided on the bridge body 2. A second mounting groove 16 is provided on the support block 14. A spring damping rod 17 that is fixedly connected to the groove is fixedly installed inside the second mounting groove 16. Through the arrangement of the support blocks 14 and the damping plates 15, the damping plates 15 on the support blocks 14 are inserted into the grooves provided on the bridge body 2. Under the action of the damping plates 15, the bridge body 2 can be seismically isolated from the left and right to prevent the bridge body 2 from shaking from the left and right. Through the arrangement of the second mounting groove 16 and the spring damping rod 17, the spring damping rod 17 can provide secondary seismic resistance to the bridge body 2, and cooperate with the seismic resistance mechanism 3 to improve the seismic resistance of the bridge body 2.

[0028] The two seismic-resistant mechanisms 3 are symmetrically distributed between the pier 1 and the bridge body 2. Multiple mounting steel plates 18 are fixedly mounted on the fixing frame 4 and the support block 14. The mounting steel plates 18 are fixedly connected to the pier 1 via multiple bolts 19. By symmetrically arranging the two seismic-resistant mechanisms 3 between the pier 1 and the bridge body 2, the pressure on both seismic-resistant mechanisms 3 is equal, making the seismic resistance more uniform and improving the seismic resistance quality. The use of mounting steel plates 18 and bolts 19 to mount the fixing frame 4 and the support block 14 on the pier 1 enhances the secureness of the installation.

[0029] In this embodiment, if Figure 1-Figure 5 As shown, the working process of a bridge seismic resistant structure provided by this embodiment is as follows:

[0030] Step 1: When the bridge body 2 vibrates, it squeezes downward. When squeezed, the support plate 5 expands and contracts on the fixing frame 4. The slider 7 at one end slides in the slide groove 6. During the expansion and contraction process of the support plate 5, the viscous damper 8 is squeezed. The viscous damper 8 generates resistance to dissipate the squeezing force, thereby absorbing the vibration of the bridge body 2.

[0031] Step 2: The damping plate 15 on the support block 14 fits tightly with the inner wall of the groove on the bridge body 2, and can perform vibration isolation when the bridge body 2 swings left and right, thereby also playing a role in earthquake resistance.

[0032] In summary, in this embodiment, according to a bridge seismic structure of this embodiment, through the arrangement of the first fixing plate 9 and the compression spring 11, a plurality of compression springs 11 are arranged at the bottom of the second fixing plate 10 to support it. When the viscous damper 8 is squeezed, the compression spring 11 is squeezed directly, and when the shock absorption and buffering are completed, the compression spring 11 is reset to drive the viscous damper 8 to reset. Through the arrangement of the first mounting groove 12 and the roller 13, a rolling roller 13 is arranged on the slider 7, and the roller 13 contacts the inner wall of the slide 6. During the seismic process, the slider 7 drives the roller 13 to move, and the roller 13 rolls on the inner wall of the slide 6 to reduce the friction between the slider 7 and the slide 6, thereby reducing the wear on the slider 7 and improving a certain durability. The plate 15 is set, and the damping plate 15 on the support block 14 is inserted into the groove opened on the bridge body 2. Under the action of the damping plate 15, the bridge body 2 can be seismically isolated from the left and right to prevent the bridge body 2 from shaking left and right. Through the setting of the second installation groove 16 and the spring shock-absorbing rod 17, the spring shock-absorbing rod 17 can be set to perform secondary seismic resistance on the bridge body 2, and cooperate with the seismic resistance mechanism 3 to improve the seismic resistance effect of the bridge body 2. By symmetrically arranging the two seismic resistance mechanisms 3 between the pier 1 and the bridge body 2, the pressures on the two seismic resistance mechanisms 3 are the same, so that the seismic resistance force is more uniform, and the seismic resistance quality is improved. By installing the steel plate 18 and the bolts 19, the fixing frame 4 and the support block 14 are installed on the pier 1 using the installing steel plate 18 and the bolts 19, which can improve the firmness of the installation.

[0033] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0034] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0035] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A bridge seismic resistant structure, comprising a bridge pier (1) and a bridge body (2) mounted on the bridge pier (1), characterized in that: Two anti-seismic mechanisms (3) are provided on the bridge pier (1), and the anti-seismic mechanism (3) includes a fixing frame (4) fixedly installed on the bridge pier (1), and support plates (5) movably installed through a rotating shaft are provided on both sides of the fixing frame (4), and a plurality of slide grooves (6) are provided at the bottom of the bridge body (2), and a slider (7) movably installed through a rotating shaft is provided at one end of the support plate (5), and the slider (7) is slidably connected to the slide groove (6), and a viscous damper (8) is fixedly installed on one side of the support plate (5), and a second fixing plate (10) movably connected to the bridge pier (1) is fixedly installed at the bottom of the viscous damper (8).

2. The bridge seismic resistant structure according to claim 1, characterized in that: A first fixing plate (9) movably connected to the second fixing plate (10) is fixedly mounted on the inner wall of the pier (1), and a plurality of compression springs (11) are mounted between the first fixing plate (9) and the second fixing plate (10).

3. The bridge seismic resistant structure according to claim 1, characterized in that: The slider (7) is provided with a first mounting groove (12), and a roller (13) is movably mounted inside the first mounting groove (12).

4. The seismic-resistant bridge structure according to claim 1, characterized in that: Two support blocks (14) are symmetrically fixedly mounted on the top of the bridge pier (1), a damping plate (15) is fixedly mounted on the surface of the support block (14), and a groove matching the support block (14) is provided on the bridge body (2).

5. The bridge seismic resistant structure according to claim 4, characterized in that: A second mounting groove (16) is provided on the support block (14), and a spring damping rod (17) fixedly connected to the groove is fixedly installed inside the second mounting groove (16).

6. The bridge seismic resistant structure according to claim 1, characterized in that: The two anti-seismic mechanisms (3) are symmetrically distributed between the bridge pier (1) and the bridge body (2).

7. The bridge seismic resistant structure according to claim 4, characterized in that: The fixing frame (4) and the supporting block (14) are both fixedly mounted with a plurality of mounting steel plates (18), and the mounting steel plates (18) are fixedly connected to the bridge pier (1) via a plurality of bolts (19).

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