CN109778684B

CN109778684B - Bridge damping support

Info

Publication number: CN109778684B
Application number: CN201910135457.6A
Authority: CN
Inventors: 詹连恩
Original assignee: Zhejiang Huajin Building Decoration Design Co ltd
Current assignee: Zhejiang Huajin Building Decoration Design Co ltd
Priority date: 2019-02-23
Filing date: 2019-02-23
Publication date: 2020-12-18
Anticipated expiration: 2039-02-23
Also published as: CN109778684A

Abstract

The invention discloses a bridge damping support, which relates to the technical field of bridges and comprises reinforced steel plates and rubber damping cushions, wherein reinforcing plates are fixedly embedded in the rubber damping cushions, two sides of each rubber damping cushion are respectively connected with damping boxes through a fixed bolt, the two damping boxes are respectively connected with the two reinforced steel plates, a sliding plate is arranged between the two fixed bolts in a sliding manner, wedge-shaped blocks are fixedly arranged on the two fixed bolts, movable blocks are arranged between the two wedge-shaped blocks and the reinforcing plates in a sliding manner, one side surfaces of the two movable blocks are arranged into inclined surfaces and respectively slide on the two wedge-shaped blocks, one ends of the two movable blocks are abutted against the sliding plate, the other ends of the two movable blocks slide on the reinforcing plates, linkage rods are symmetrically hinged on the sliding plate, one ends of the two linkage rods are respectively connected with the damping cushions, and the two damping cushions are respectively arranged in the two damping cushions; the bridge has the effect of reducing the vibration of the bridge while bearing the load, and can be suitable for large and medium span bridges.

Description

Bridge damping support

Technical Field

The invention relates to the technical field of bridges, in particular to a bridge damping support.

Background

The bridge bearing is an important structural component for connecting the upper structure and the lower structure of the bridge, and can reliably transmit the counter force and the deformation of the upper structure of the bridge to the lower structure of the bridge, so that the actual stress condition of the structure conforms to the calculated theoretical diagram.

The existing bridge support is mainly a plate type rubber support, and the support of the type has enough vertical rigidity to bear vertical load, but cannot realize the damping effect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a bridge damping support which can reduce the vibration of a bridge while bearing load and can be suitable for large and medium span bridges.

In order to achieve the purpose, the invention provides the following technical scheme:

a shock-absorbing bridge support comprises reinforcing steel plates fixed on a bridge and a rubber shock-absorbing pad arranged between the two reinforcing steel plates, wherein a reinforcing plate is fixedly embedded in the rubber shock-absorbing pad, two sides of the rubber shock-absorbing pad are respectively connected with shock-absorbing boxes through a fixed bolt, the two shock-absorbing boxes are respectively connected with the two reinforcing steel plates, a sliding plate is arranged between the two fixed bolts in a sliding manner, wedge-shaped blocks are fixedly arranged on the two fixed bolts, movable blocks are arranged between the two wedge-shaped blocks and the reinforcing plate in a sliding manner, one side faces of the two movable blocks are arranged to be inclined planes and respectively slide on the two wedge-shaped blocks, one ends of the two movable blocks are abutted against the sliding plate, the other ends of the two movable blocks are directionally slide on the reinforcing plate, linkage rods are symmetrically hinged on the sliding plate, and one ends of the two linkage rods, which are far away from being connected with the sliding, and the two damping buffer parts are respectively arranged in the two damping boxes.

According to the arrangement, firstly, two reinforcing steel plates are respectively fixed at the gap of a bridge, so that the connection positions of the bridge are connected through a bridge damping support; when the outer surface of the rubber shock pad is stressed, the rubber shock pad is deformed to enable the inner reinforcing plate to move towards the shock absorption buffer part, the movable blocks of the inner reinforcing plate slide on the wedge-shaped block and the reinforcing plate respectively, the sliding plate is enabled to move away from the reinforcing plate, and at the moment, the linkage rod acts on the shock absorption buffer part again to achieve the purpose of buffering and shock absorption; when the pressure on the outer surface of the rubber shock pad disappears, the springs restore to the original state, and the purposes of stress shock absorption and buffering are achieved; the purpose of stress dispersion is achieved through the shock absorption buffer parts, the rubber shock absorption pads, the movable blocks, the linkage rods and the sliding plates, the vibration of the bridge is reduced while the load is borne through multi-aspect stress dispersion and energy absorption, and the shock absorption device can be suitable for the effect of large and medium span bridges.

Further setting: the damping buffer piece comprises a sliding rod fixedly arranged in the damping box, sliding sleeves symmetrically and slidably arranged on the sliding rod, a buffer rod, a damping spring and a push plate, wherein one end of the buffer rod is hinged to the two sliding sleeves respectively, the buffer spring is sleeved on the sliding rod, two ends of the damping spring are fixedly connected with the two sliding sleeves respectively, the push plate is slidably arranged in the damping box, one end, far away from the sliding sleeve, of the buffer rod is hinged to the push plate, and one end, far away from the linkage rod, connected with the sliding plate is hinged to the push plate.

When the outer surface of the rubber shock pad is pressed, the linkage rod drives the push plate to slide in the shock absorption box, the buffer rod acts on the sliding sleeve and slides on the sliding rod, and the shock absorption spring is stretched; on the one hand, the purposes of energy absorption and buffering and shock absorption are achieved by stress stretching or compression of the springs, on the other hand, the purposes of stress dispersion are achieved by the aid of the rubber shock absorption pads, the push plates, the buffer rods, the movable blocks and the sliding plates, and the purposes of reducing the vibration of the bridge while bearing loads are achieved by the aid of multi-aspect stress dispersion and energy absorption.

Further setting: and compression springs are respectively arranged between the two sliding sleeves and the side wall of the damping box, and the two compression springs are sleeved on the sliding rod.

So set up, slide in the gangbar drive push pedal is in the shock attenuation box, impel the buffer beam to act on the slip cap and slide on being in the litter, compression spring compression, damping spring are tensile, stretch or compress through each spring atress and reach energy-absorbing buffering, absorbing purpose.

Further setting: at least one return spring is arranged between the two push plates.

By the arrangement, when the linkage rod drives the push plates to slide in the damping box, the linkage rod acts between the two push plates through the return spring, so that the aim of stretching and absorbing energy of the return spring is fulfilled when the bridge damping support is stressed, and the vibration of a bridge is reduced while the load is borne.

Further setting: the inner side walls of the damping box symmetry are provided with guide grooves, and two ends of the push plate are respectively arranged in the guide grooves of the two inner side walls in a sliding mode.

So set up, make the both ends of its push pedal slide in the guide way respectively, improve the stability of push pedal when being in the interior motion of shock attenuation box.

Further setting: and a plurality of supporting springs are symmetrically arranged between the sliding plate and the damping box.

So set up, make its movable block when acting on the sliding plate, through the supporting spring between shock attenuation box and the sliding plate, reach the effect of energy-absorbing, realize its absorbing effect.

Further setting: the end face of the reinforcing plate is symmetrically provided with sliding grooves, and the ends, far away from the end abutting against the reinforcing plate, of the two movable blocks slide in the two sliding grooves respectively.

So set up, when the power on the reinforcing plate acted on the movable block, make it slide in the sliding tray, improve the job stabilization nature between reinforcing plate and the movable block, played the gliding effect of location.

Further setting: a movable spring is connected between the two movable blocks.

So set up, when the reinforcing plate atress and impel two movable blocks to slide each other, make its activity spring compression, reach the effect of energy-absorbing, and then improve shock absorber's shock attenuation effect.

Further setting: and positioning grooves are formed in the two fixed inserting pins, and two ends of the sliding plate are respectively arranged in the two positioning grooves in a sliding manner.

So set up, when the sliding plate atress slided, make the both ends of its sliding plate slide respectively in the constant head tank, improve the stability of being connected between sliding tray and the fixed bolt.

Further setting: the reinforcing steel plate is L-shaped and wraps the top surface and the side surface of the bridge, and the damping box is fixedly arranged at one end of the reinforcing steel plate connected to the side surface of the bridge.

So set up, make on its reinforcement steel sheet is fixed in the bridge, improve the stability of being connected between bridge damping bearing and the bridge, the effect of shock attenuation buffering is realized to shock attenuation box and shock attenuation bolster simultaneously.

Compared with the prior art, the invention has the following advantages by adopting the technical scheme:

1. when the outer surface of the rubber shock pad is stressed and deformed, the purposes of energy absorption, buffering and shock absorption are achieved by the stress stretching or compression of each spring, meanwhile, the purposes of stress dispersion are achieved by the rubber shock pad, the push plate, the buffer rod, the movable block and the sliding plate, the shock of the bridge is reduced while the load is borne by the rubber shock pad, the push plate, the buffer rod, the movable block and the sliding plate, and the effect of being suitable for large and medium span bridges is achieved by the stress dispersion and energy absorption in multiple aspects;

2. the return spring acts between the two push plates, so that when the bridge damping support is stressed, the aim of stretching and absorbing energy by the return spring is achieved, and the vibration of the bridge is reduced while the load is borne;

3. the two ends of the push plate are respectively positioned in the guide grooves to slide, so that the stability of the push plate in the movement of the damping box is improved;

4. through being connected with the floating spring between two movable blocks, when the reinforcing plate atress and impel two movable blocks to slide each other, make its floating spring compress, reach the effect of energy-absorbing, and then improve shock-absorbing support's shock attenuation effect.

Drawings

FIG. 1 is a schematic cross-sectional view of a bridge damping mount;

fig. 2 is a schematic view of a partial structure between a shock absorption buffer member and a shock absorption box in a bridge shock absorption support.

In the figure: 1. reinforcing the steel plate; 2. a rubber shock pad; 3. a shock-absorbing box; 31. a guide groove; 41. a reinforcing plate; 411. a sliding groove; 42. fixing the bolt; 421. positioning a groove; 43. a wedge block; 44. a movable block; 45. a movable spring; 46. a sliding plate; 47. a support spring; 48. a linkage rod; 5. a shock absorbing buffer; 51. a slide rod; 52. a sliding sleeve; 53. a buffer rod; 54. a damping spring; 55. pushing the plate; 56. a return spring; 57. compressing the spring.

Detailed Description

The bridge damping support is further explained with reference to the attached drawings.

A bridge damping support comprises reinforcing steel plates 1 which are arranged in an L shape and fixed on a bridge, rubber damping pads 2 arranged between the two reinforcing steel plates 1, and damping boxes 3 respectively fixedly arranged on the two reinforcing steel plates 1, as shown in figure 1; the both ends of reinforcing steel sheet 1 wrap up in the top surface and the side of bridge, and open-ended metal casing has been seted up for a terminal surface to shock attenuation box 3, and its bottom surface is fixed to be arranged in reinforcing steel sheet 1 and to be connected in one of bridge side and serve.

As shown in fig. 1, a reinforcing plate 41 is fixedly embedded in the rubber shock pad 2, and the cross section of the reinforcing plate 41 is arranged in a shape like a Chinese character shan and is a metal plate; the both sides of rubber shock pad 2 are respectively through a fixing

bolt

42 and 3 fixed connection of shock attenuation box, all fixedly on two fixing bolt 42 be provided with wedge 43, and the inclined plane slope of wedge 43 arranges down, and all slides between two wedges 43 and reinforcing plate 41 and be provided with movable block 44, and a side of two movable blocks 44 all sets up to the inclined plane and slides respectively on two wedges 43.

As shown in fig. 1 and 2, the reinforcing plate 41 in the inverted "mountain" shape has two sliding grooves 411 formed therein, one ends of the two movable blocks 44 are respectively located on a horizontal plane and slide in the two sliding grooves 411, and the other ends of the sliding blocks are respectively in sliding contact with the sliding plate 46; in order to improve the stability of the two movable blocks 44 sliding on the two wedge-shaped blocks 43, a movable spring 45 is fixedly connected between the two movable blocks 44.

As shown in fig. 1 and 2, a sliding plate 46 is disposed between the two fixing bolts 42, positioning grooves 421 are disposed on the fixing bolts 42, and two ends of the sliding plate 46 are slidably disposed in the two positioning grooves 421, so that the sliding plate 46 reciprocates within a range of a distance between the shock-absorbing box 3 and the wedge block 43; in order to improve the stability of the sliding plate 46 sliding between the two fixed bolts 42, a plurality of supporting springs 47 are symmetrically arranged between the sliding plate 46 and the damping box 3, and the compression direction of the supporting springs 47 is perpendicular to the compression direction of the movable spring 45.

As shown in fig. 1, linkage rods 48 are symmetrically hinged on the sliding plate 46, the ends of the two linkage rods 48 far away from the end connected with the sliding plate 46 are respectively connected with shock absorbing buffers 5, and the two shock absorbing buffers 5 are respectively arranged in the two shock absorbing boxes 3.

Referring to fig. 1 and 2, the shock-absorbing buffer 5 includes a sliding rod 51 fixedly disposed in the shock-absorbing box 3, sliding sleeves 52 symmetrically slidably disposed on the sliding rod 51, a buffer rod 53 having one end respectively hinged to the two sliding sleeves 52, a shock-absorbing spring 54 sleeved on the sliding rod 51 and having two ends respectively fixedly connected to the two sliding sleeves 52, and a push plate 55 slidably disposed in the shock-absorbing box 3; the ends of the two buffer rods 53 far away from the connection with the sliding sleeve 52 are hinged on the push plate 55, and the ends of the two linkage rods 48 far away from the connection with the sliding plate 46 are hinged on the two push plates 55 respectively.

Referring to fig. 1 and 2, in order to improve the stability of the push plate 55 sliding in the damping box 3, guide grooves 31 are respectively formed in the symmetrical inner side walls of the damping box 3, and two ends of the push plate 55 are respectively arranged in the guide grooves 31 of the two inner side walls in a sliding manner; meanwhile, in order to improve the damping performance of the damping and buffering assembly, at least one return spring 56 is arranged between the two push plates 55, and two return springs are preferably selected in the scheme.

Referring to fig. 1 and 2, meanwhile, compression springs 57 are respectively disposed between the two sliding sleeves 52 and the side walls of the damping box 3, the two compression springs 57 are both sleeved on the sliding rod 51, and two ends of the compression springs 57 are respectively fixedly connected with the sliding sleeves 52 and the inner side walls of the damping box 3.

The working principle is as follows: firstly, respectively fixing two reinforcing steel plates 1 at the gap of a bridge, and connecting the joints of the bridge through a bridge damping support; when the outer surface of the rubber shock pad 2 is pressed, the rubber shock pad 2 is deformed to urge the inner reinforcing plate 41 to move towards the shock absorbing and buffering piece 5, so that the movable blocks 44 of the inner reinforcing plate slide on the wedge-shaped blocks 43 and the reinforcing plate 41 respectively, and the sliding plate 46 is urged to move away from the reinforcing plate 41; at the moment, the linkage rod 48 drives the push plate 55 to slide in the shock absorption box 3, the return spring 56 stretches, the buffer rod 53 is driven to act on the sliding sleeve 52 to slide on the sliding rod 51, the compression spring 57 compresses, and the shock absorption spring 54 stretches; when the pressure on the outer surface of the rubber shock pad 2 disappears, the springs restore to the original state, and the purposes of stress shock absorption and buffering are achieved; on one hand, the purposes of energy absorption, buffering and shock absorption are achieved by stress stretching or compression of each spring, on the other hand, the purpose of stress dispersion is achieved by the aid of the rubber shock absorption pad 2, the push plate 55, the buffer rod 53, the movable block 44 and the sliding plate 46, and the shock of the bridge is reduced while bearing load is achieved by means of multi-aspect stress dispersion and energy absorption, and the shock absorption device is suitable for large and medium span bridges.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a bridge damping bearing, is including being fixed in reinforced steel sheet (1) on the bridge and setting up rubber shock pad (2) between two reinforced steel sheet (1), its characterized in that: a reinforcing plate (41) is fixedly embedded in the rubber shock pad (2), two sides of the rubber shock pad (2) are respectively connected with shock absorption boxes (3) through fixing bolts (42), the two shock absorption boxes (3) are respectively connected with the two reinforcing steel plates (1), a sliding plate (46) is arranged between the two fixing bolts (42) in a sliding mode, and a plurality of supporting springs (47) are symmetrically arranged between the sliding plate (46) and the shock absorption boxes (3); wedge-shaped blocks (43) are fixedly arranged on the two fixed bolts (42), movable blocks (44) are arranged between the two wedge-shaped blocks (43) and the reinforcing plate (41) in a sliding mode, a movable spring (45) is connected between the two movable blocks (44), one side faces of the two movable blocks (44) are arranged to be inclined faces and slide on the two wedge-shaped blocks (43) respectively, one ends of the two movable blocks (44) are abutted against the sliding plate (46), the other ends of the two movable blocks are directionally slid on the reinforcing plate (41), linkage rods (48) are symmetrically hinged on the sliding plate (46), one ends, far away from the ends connected with the sliding plate (46), of the two linkage rods (48) are connected with damping buffers (5) respectively, and the two damping buffers (5) are arranged in the two damping boxes (3) respectively; shock attenuation bolster (5) including fixed litter (51), the symmetry slip that sets up in shock attenuation box (3) slide sleeve (52), one end articulate buffer bar (53) on two slip sleeves (52) respectively, overlap and locate on litter (51) and both ends respectively with two slip sleeve (52) fixed connection's damping spring (54) and slip set up push pedal (55) in shock attenuation box (3), two buffer bar (53) keep away from the one end of being connected with slip sleeve (52) and all articulate on push pedal (55), the one end of keeping away from with sliding plate (46) and being connected of gangbar (48) articulate in on push pedal (55).

2. The bridge damping bearer according to claim 1, characterized in that: compression springs (57) are respectively arranged between the two sliding sleeves (52) and the side wall of the damping box (3), and the two compression springs (57) are sleeved on the sliding rod (51).

3. The bridge damping mount according to claim 1 or 2, wherein: at least one return spring (56) is arranged between the two push plates (55).

4. The bridge damping mount according to claim 1 or 2, wherein: the inner side walls of the damping box (3) in symmetry are provided with guide grooves (31), and two ends of the push plate (55) are respectively arranged in the guide grooves (31) of the two inner side walls in a sliding mode.

5. The bridge damping bearer according to claim 1, characterized in that: sliding grooves (411) are symmetrically formed in the end face of the reinforcing plate (41), and the ends, far away from the end abutting against the reinforcing plate (41), of the two movable blocks (44) slide in the two sliding grooves (411) respectively.

6. The bridge damping bearer according to claim 1, characterized in that: positioning grooves (421) are formed in the two fixing bolts (42), and two ends of the sliding plate (46) are respectively arranged in the two positioning grooves (421) in a sliding mode.

7. The bridge damping bearer according to claim 1, characterized in that: consolidate steel sheet (1) and be the setting of L type and wrap up in the top surface and the side of bridge, shock attenuation box (3) fixed arrangement is served in the one end of consolidating steel sheet (1) connection in the bridge side.