CN111878541B

CN111878541B - Bridge antidetonation strutting arrangement

Info

Publication number: CN111878541B
Application number: CN202010548160.5A
Authority: CN
Inventors: 刘建华; 鲁超; 余伽义; 王炎; 曹成杰; 张楠楠
Original assignee: Zhejiang Sci Tech University ZSTU
Current assignee: Zhejiang Sci Tech University ZSTU
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2022-08-30
Anticipated expiration: 2040-06-16
Also published as: CN111878541A

Abstract

The invention discloses a bridge anti-seismic support device which comprises two housings, two connecting mechanisms, two buffering devices and a plurality of anti-seismic supports, wherein the two housings are respectively sleeved at two ends of a cover beam, the two housings are detachably and fixedly connected through the two connecting mechanisms, the buffering devices are arranged at the upper ends of the housings, the anti-seismic supports are positioned on the cover beam between the two housings, each buffering device comprises a first sliding plate, a spring body, a second sliding plate, two connecting arms, two supporting seats, two guide rods and a pushing body, the two guide rods which are horizontally arranged in parallel are arranged between the two supporting seats, and the first sliding plate and the second sliding plate can be arranged on the two guide rods in a sliding mode.

Description

Bridge antidetonation strutting arrangement

Technical Field

The invention relates to the technical field of bridges, in particular to the technical field of a bridge anti-seismic supporting device.

Background

The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass.

With the development of the transportation industry and the improvement of the standards of construction engineering, the support not only plays a supporting role in bridges and other engineering, but also has a damping role. The buffering anti-seismic device is arranged between the bridge body and the bridge support, so that vibration generated when a vehicle on the bridge travels is reduced, and the whole bridge is protected. The existing anti-seismic device has poor anti-seismic capability and short service life.

Under the action of overlarge earthquake, a main beam of the bridge structure is easy to generate large transverse displacement in the transverse bridge direction, and the main beam is directly contacted or collided with transverse constraint displacement measures such as an anti-seismic stop block, a buffering energy dissipation measure and the like arranged on the bent cap. The girder falling accidents of the main girder of the bridge structure are usually prevented at the expense of destroying the transverse constraint displacement measures such as anti-seismic blocks, buffering and energy dissipation measures and the like. In the prior art, when the main beam generates transverse displacement and impacts a certain side anti-seismic stop block, the two side anti-seismic stop blocks can not bear impact force together, so that the impact force born by the single side anti-seismic stop block is greatly increased, and the transverse beam falling accident is easily caused.

Therefore, a bridge anti-seismic support device which improves the damping effect, prolongs the service life, reduces the occurrence of transverse beam falling accidents and is simple to install is needed.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a bridge anti-seismic support device which has the advantages of improving the shock absorption effect, prolonging the service life, reducing the occurrence of transverse beam falling accidents and being simple to install.

In order to achieve the purpose, the invention provides a bridge anti-seismic support device, which comprises two housings, two connecting mechanisms, two buffering devices and a plurality of anti-seismic supports, wherein the two housings are respectively sleeved on two ends of a cover beam, the two housings are detachably and fixedly connected through the two connecting mechanisms, the upper ends of the housings are respectively provided with the buffering devices, the anti-seismic supports are positioned on the cover beam between the two housings, the buffering devices comprise a first sliding plate, a spring body, a second sliding plate, two connecting arms, two supporting seats, two guide rods and a pushing body, two guide rods horizontally arranged in parallel are arranged between the two supporting seats, the first sliding plate and the second sliding plate can be arranged on the two guide rods in a sliding manner, the spring body is arranged between the first sliding plate and the second sliding plate, and blocking bodies positioned at the rear ends of the second sliding plate are arranged on the guide rods, one end of the connecting arm is fixedly connected with the first sliding plate, the other end is fixedly connected with the third sliding plate, a pushing body fixedly connected with the bridge is arranged between the second sliding plate and the third sliding plate, the third sliding plate is positioned at the inner side of the pushing body, the anti-seismic support comprises a lower base, a frame body, a plurality of damping devices, a sliding body and an upper base, wherein the frame body is arranged on the lower base, the upper base is provided with a sliding body positioned in the frame body, four side wall bodies of the frame body are provided with damping devices which are abutted against the sliding body, the sliding body is a round table with a large upper part and a small lower part, the damping device comprises a plate spring assembly, a support and a roller, but support and the both ends sliding connection of leaf spring assembly, the support is kept away from the one end of leaf spring assembly and is equipped with the gyro wheel of contradicting on the slider, be equipped with the bumper shock absorber between slider and the lower base.

Preferably, the support comprises a first fork body, two ends of the first fork body are provided with second fork bodies, and the second fork bodies are provided with rolling wheels a which abut against the inner sides of the ends of the plate spring assemblies.

Preferably, the plate spring assembly is formed by stacking at least two plate spring pieces and fixing the plate spring pieces by using a clamping hoop, and both ends of the plate spring pieces of the plate spring assembly, which are close to the sliding body, are bent to form blocking parts.

Preferably, the plate spring assembly is fixed to a side wall of the frame by a U-shaped bolt, and a spacer is provided between the plate spring assembly and the side wall of the frame.

As preferred, all be equipped with the adjustable strutting arrangement who is used for supporting the leaf spring assembly on four lateral wall bodies of framework, strutting arrangement includes mount pad, pivot, two slides, two supporting wheels and two fender bodies, the mount pad is established on the lateral surface of the lateral wall body of framework, be equipped with the pivot of rotatable setting on the mount pad, all be equipped with threaded connection's slide in the pivot of mount pad both sides, the slide is located and establishes rather than the slotted hole that corresponds on the lateral wall body of framework, the free end of slide all is equipped with the supporting wheel that is used for supporting the leaf spring assembly, all be equipped with the fender body that is located the lateral wall body of framework on the slide.

Preferably, the rollers are guide rail wheels, and the peripheral surface of the sliding body is provided with guide rails which correspond to the rollers one to one and are matched with the rollers.

Preferably, a rotatable rotating shaft is arranged on the lower base, a turbine is arranged on the rotating shaft, a worm meshed with the turbine is arranged on the frame body, a nut connected with threads is arranged on the rotating shaft, and a fixing seat a fixedly connected with the shock absorber is arranged at the upper end of the nut.

Preferably, a screw rod body is arranged on the corresponding surface of the support seat and the first sliding plate, a nut body is arranged on the screw rod body, and a top head which is propped against the first sliding plate is arranged on the nut body.

Preferably, the second sliding plate and the third sliding plate are both provided with rolling wheels b abutting against the pushing body, the upper end of the pushing body is provided with a fixed seat b fixedly connected with the bridge, the fixed seat b is welded with the pushing body, and the fixed seat b is provided with a shaft body penetrating through the pushing body.

Preferably, the connecting mechanism comprises a front connecting body and a rear connecting body, one end of the front connecting body is fixedly connected with the front housing through a bolt, the other end of the front connecting body is provided with a front connecting seat, one end of the rear connecting body is fixedly connected with the rear housing through a bolt, the other end of the rear connecting body is provided with a rear connecting seat, the front connecting seat and the rear connecting seat are fixedly connected together through a bolt pair, the front connecting body and the rear connecting body are respectively provided with a positioning protrusion, and the housing is provided with a positioning groove matched with the positioning protrusion.

The invention has the beneficial effects that: according to the invention, the two housings are respectively sleeved on the two ends of the cover beam, the two housings are detachably and fixedly connected through the two connecting mechanisms, the upper ends of the housings are respectively provided with the buffer devices, and the mounting and dismounting are simple; the second sliding plate is pushed by the pushing body in front to compress the spring body, and the pushing body in back drives the first sliding plate to compress the spring body to consume the impact force of the transverse left movement of the bridge through the cooperation of the third sliding plate and the connecting arm; the pushing body in front drives the first sliding plate to compress the spring body and the pushing body in back to push the second sliding plate to compress the spring body to consume the impact force of the transverse right movement of the bridge through the cooperation of the third sliding plate and the connecting arm, the transverse impact force of the bridge is shared by the housing and the buffer devices on both sides, so that the occurrence of transverse beam falling accidents caused by the collision of the bridge due to overlarge impact force of the buffer device on one side is reduced, the anti-seismic effect is good, the spring body and the shock absorber can effectively buffer the impact force of the bridge, and the restorability is good; the energy of the system is consumed through the cooperation of the plate spring assembly and the damper, so that the aim of good vibration reduction effect is fulfilled, the service life is long, and the damper inhibits the vibration of the plate spring assembly during the backward rebound and the impact from a bridge and accelerates the attenuation of the vibration; according to the weight of the bridge, the supporting point position of the supporting device on the plate spring assembly is adjusted, so that the plate spring assembly is stressed in the optimal working state, and the shock absorber can be adjusted in a lifting mode, and the application range can be widened.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of an earthquake-resistant supporting device for a bridge according to the present invention;

FIG. 2 is a partial top plan view of the cushioning device of the present invention;

FIG. 3 is a schematic structural view of a seismic support;

FIG. 4 is a partial top view of the seismic mount.

In the figure: 1-housing, 2-connecting mechanism, 3-buffer device, 4-anti-seismic support, 5-capping beam, 6-bridge, 21-front connecting body, 22-rear connecting body, 23-front connecting seat, 24-rear connecting seat, 25-bolt pair, 26-positioning lug, 27-positioning groove, 31-first sliding plate, 32-spring body, 33-second sliding plate, 34-connecting arm, 35-blocking body, 36-top, 37-supporting seat, 38-guide rod, 39-pushing body, 310-third sliding plate, 311-rolling wheel b, 312-fixing seat b, 313-shaft body, 314-screw rod body, 315-nut body, 41-lower base, 42-frame body, 43-shock-absorbing device, 44-sliding body, 45-upper base, 46-supporting device, 47-slotted hole, 48-guide rail, 49-shock absorber, 40-rotating shaft, 411-worm wheel, 412-worm, 413-nut, 414-fixed seat a, 431-plate spring assembly, 432-support, 433-roller, 434-blocking part, 435-cushion block, 461-mounting seat, 462-rotating shaft, 463-sliding seat, 464-supporting wheel, 465-blocking body, 4321-first fork body, 4322-second fork body and 4323-rolling wheel a.

Detailed Description

Referring to fig. 1, 2, 3 and 4, the anti-seismic bridge supporting device of the present invention comprises two housings 1, two connecting mechanisms 2, two buffering devices 3 and a plurality of anti-seismic supports 4, wherein the two housings 1 are respectively sleeved on two ends of a cover beam 5, the two housings 1 are detachably and fixedly connected by the two connecting mechanisms 2, the buffering devices 3 are respectively disposed at the upper ends of the housings 1, the anti-seismic supports 4 are located on the cover beam 5 between the two housings 1, the buffering device 3 comprises a first sliding plate 31, a spring body 32, a second sliding plate 33, two connecting arms 34, two supporting seats 37, two guide rods 38 and a pushing body 39, the two guide rods 38 are horizontally and parallelly disposed between the two supporting seats 37, the first sliding plate 31 and the second sliding plate 33 are slidably disposed on the two guide rods 38, the spring body 32 is disposed between the first sliding plate 31 and the second sliding plate 33, the guide rods 38 are all provided with a blocking body 35 positioned at the rear end of the second sliding plate 33, one end of the connecting arm 34 is fixedly connected with the first sliding plate 31, the other end of the connecting arm is fixedly connected with the third sliding plate 310, a pushing body 39 fixedly connected with the bridge 6 is arranged between the second sliding plate 33 and the third sliding plate 310, the third sliding plate 310 is positioned at the inner side of the pushing body 39, the anti-seismic support 4 comprises a lower base 41, a frame 42, a plurality of shock-absorbing devices 43, a sliding body 44 and an upper base 45, the lower base 41 is provided with the frame 42, the upper base 45 is provided with the sliding body 44 positioned in the frame 42, the four side wall bodies of the frame 42 are all provided with the shock-absorbing devices 43 which are abutted against the sliding body 44, the sliding body 44 is a circular table with a large upper part and a small lower part, the shock-absorbing devices 43 comprise a plate spring assembly 431, a support 432 and a roller 433, the support 432 is slidably connected with two ends of the plate spring assembly 431, a roller 433 abutting against the sliding body 44 is arranged at one end of the support 432 far away from the plate spring assembly 431, a shock absorber 49 is arranged between the sliding body 44 and the lower base 41, the support 432 comprises a first fork body 4321, two ends of the first fork body 4321 are respectively provided with a second fork body 4322, the second fork body 4322 is respectively provided with a roller a4323 abutting against the inner side of the end part of the plate spring assembly 431, the plate spring assembly 431 is formed by stacking and fixing at least two plate spring sheets by using a hoop, two ends of the plate spring sheet of the plate spring assembly 431 close to the sliding body 44 are respectively bent to form a blocking part 434, the plate spring assembly 431 is fixed on a side wall body of the frame body 42 by a U-shaped bolt, cushion blocks 435 are arranged between the plate spring assembly 431 and a side wall body of the frame body 42, adjustable supporting devices 46 for supporting the plate spring assembly 431 are arranged on four side wall bodies of the frame body 42, and each supporting device 46 comprises a mounting base 461, a second fork body 4321 and a lower base 41, wherein the first fork body 4321 is arranged on the upper side wall body, the lower base, and the lower base 41 are arranged on the lower base, and the lower base is arranged on the lower base, and is arranged on the upper base, the lower base, and is arranged on the lower base is arranged on the upper base, the lower base is arranged on the upper base is arranged on the lower base, the lower base is arranged on the upper base is arranged on the lower base is arranged on the upper base is arranged on the lower base is arranged on the upper base is arranged on the lower base is arranged on the upper base is arranged on the lower, A rotating shaft 462, two sliding seats 463, two supporting wheels 464 and two blocking bodies 465, wherein the installation seat 461 is arranged on the outer side surface of the side wall body of the frame body 42, the rotating shaft 462 which is rotatably arranged is arranged on the installation seat 461, the rotating shaft 462 on both sides of the installation seat 461 is provided with the sliding seats 463 which are in threaded connection, the sliding seats 463 are arranged in the corresponding slotted holes 47 arranged on the side wall body of the frame body 42, the free ends of the sliding seats 463 are provided with the supporting wheels 464 used for supporting the plate spring assembly 431, the sliding seats 463 are provided with the blocking bodies 465 arranged on the inner side of the side wall body of the frame body 42, the rollers 433 are guide rail wheels, the peripheral surface of the sliding body 44 is provided with guide rails 48 which are in one-to-one correspondence and are matched with the rollers 433, the lower base 41 is provided with a rotating shaft 410 which is rotatable, the rotating shaft 410 is provided with a worm wheel 411, the frame body 42 is provided with a worm 412 which is in meshing connection with the worm wheel 411, a nut 413 connected with a screw thread is arranged on the rotating shaft 410, a fixed seat a414 fixedly connected with a shock absorber 49 is arranged at the upper end of the nut 413, a screw rod body 314 is arranged on the corresponding surface of the supporting seat 37 and the first sliding plate 31, a nut body 315 is arranged on the screw rod body 314, a top 36 pressed against the first sliding plate 31 is arranged on the nut body 315, rolling wheels b311 pressed against the pushing body 39 are arranged on the second sliding plate 33 and the third sliding plate 310, a fixed seat b312 fixedly connected with the bridge 6 is arranged at the upper end of the pushing body 39, the fixed seat b312 is welded with the pushing body 39, a shaft body 313 penetrated on the pushing body 39 is arranged on the fixed seat b312, the connecting mechanism 2 comprises a front connecting body 21 and a rear connecting body 22, one end of the front connecting body 21 is fixedly connected with the front housing 1 through a bolt, and the other end is provided with a front connecting seat 23, one end of the rear connecting body 22 is fixedly connected with the housing 1 at the rear through a bolt, the other end of the rear connecting body is provided with a rear connecting seat 24, the front connecting seat 23 and the rear connecting seat 24 are fixedly connected together through a bolt pair 25, the front connecting body 21 and the rear connecting body 22 are both provided with positioning bulges 26, and the housing 1 is provided with positioning grooves 27 matched with the positioning bulges 26.

The working process of the invention is as follows:

in the working process of the anti-seismic bridge supporting device, when the upper base 45 is subjected to downward acting force of a bridge, the upper base 45 drives the sliding body 44 to move downwards, the sliding body 44 exerts the downward acting force on the shock absorber 49 and simultaneously forces the first fork body 4321 to move away from the sliding body 44 through the matching of the guide rail 48 and the roller 433, and the first fork body 4321 drives the rolling wheel 4323 close to the first fork body 4321 to press the plate spring assembly 431 to deform so as to consume the energy of the system through the second fork body 4322, so that the aim of good shock absorption effect is fulfilled.

When the weight of the borne bridge is increased, the rotating shaft 462 is rotated clockwise to drive the two sliding seats 463 to move reversely, the sliding seats 463 drive the supporting wheels 464 to be away from the central axis of the plate spring assembly 431, the acting force borne by the deformation of the plate spring assembly 431 is improved, then the worm 412 is rotated clockwise and the rotating shaft 410 is driven to rotate through the worm wheel 411, the nut 413 is driven to move upwards while the rotating shaft 410 rotates, and the nut 413 drives the shock absorber 49 to move upwards through the fixed seat a 414.

When the bridge 6 moves laterally and leftwards, the pushing body 39 in front pushes the second sliding plate 33 to compress the spring body 32 and the pushing body 39 in back drives the first sliding plate 31 to compress the spring body 32 through the cooperation of the third sliding plate 310 and the connecting arm 34 so as to consume the impact force of the bridge 6 moving laterally and leftwards; when the bridge 6 moves laterally to the right, the forward pushing body 39 drives the first sliding plate 31 to compress the spring body 32 and the backward pushing body 39 pushes the second sliding plate 33 to compress the spring body 32 through the cooperation of the third sliding plate 310 and the connecting arm 34, so as to consume the impact force of the lateral movement of the bridge 6.

During installation, the two housings 1 are respectively sleeved on two ends of the cover beam 5, then the front connecting seat 23 and the rear connecting seat 24 which correspond to each other in the front and rear direction are fixedly connected together through the bolt pair 25, and then the fixed seat b312 is fixedly connected with the bridge 6 through the fixing bolt.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a bridge antidetonation strutting arrangement which characterized in that: the anti-seismic support comprises two housings (1), two connecting mechanisms (2), two buffering devices (3) and a plurality of anti-seismic supports (4), wherein the two housings (1) are respectively sleeved on two ends of a cover beam (5), the two housings (1) are detachably and fixedly connected through the two connecting mechanisms (2), the buffering devices (3) are arranged at the upper ends of the housings (1), the anti-seismic supports (4) are positioned on the cover beam (5) between the two housings (1), each buffering device (3) comprises a first sliding plate (31), a spring body (32), a second sliding plate (33), two connecting arms (34), two supporting seats (37), two guide rods (38) and a pushing body (39), two guide rods (38) which are horizontally arranged in parallel are arranged between the two supporting seats (37), and the first sliding plate (31) and the second sliding plate (33) are arranged on the two guide rods (38) in a sliding manner, a spring body (32) is arranged between the first sliding plate (31) and the second sliding plate (33), the guide rods (38) are respectively provided with a blocking body (35) positioned at the rear end of the second sliding plate (33), one end of the connecting arm (34) is fixedly connected with the first sliding plate (31), the other end of the connecting arm is fixedly connected with the third sliding plate (310), a pushing body (39) fixedly connected with the bridge (6) is arranged between the second sliding plate (33) and the third sliding plate (310), the third sliding plate (310) is positioned at the inner side of the pushing body (39), the anti-seismic support (4) comprises a lower base (41), a frame body (42), a plurality of damping devices (43), a sliding body (44) and an upper base (45), the lower base (41) is provided with the frame body (42), the upper base (45) is provided with the sliding body (44) positioned in the frame body (42), the damping device (43) abutting against the sliding body (44) is arranged on four side wall bodies of the frame body (42), the sliding body (44) is a circular table with a large top and a small bottom, the damping device (43) comprises a plate spring assembly (431), a support (432) and rollers (433), the support (432) is connected with two ends of the plate spring assembly (431) in a sliding mode, the rollers (433) abutting against the sliding body (44) are arranged at one end, far away from the plate spring assembly (431), of the support (432), a shock absorber (49) is arranged between the sliding body (44) and the lower base (41), a screw body (314) is arranged on the corresponding surface of the support (37) and the first sliding plate (31), a nut body (315) is arranged on the screw body (314), and a top head (36) abutting against the first sliding plate (31) is arranged on the nut body (315).

2. A bridge anti-seismic support device according to claim 1, characterized in that: the support (432) comprises a first fork body (4321), wherein second fork bodies (4322) are arranged at two ends of the first fork body (4321), and rolling wheels a (4323) which are abutted to the inner sides of the ends of the plate spring assemblies (431) are arranged on the second fork bodies (4322).

3. A bridge anti-seismic support device according to claim 1, characterized in that: the plate spring assembly (431) is formed by stacking at least two plate spring pieces and fixing the plate spring pieces by using a clamping hoop, and both ends of the plate spring pieces of the plate spring assembly (431) close to the sliding body (44) are bent to form blocking parts (434).

4. A bridge anti-seismic support device according to claim 1, characterized in that: the plate spring assembly (431) is fixed on a side wall body of the frame body (42) through a U-shaped bolt, and a cushion block (435) is arranged between the plate spring assembly (431) and the side wall body of the frame body (42).

5. A bridge anti-seismic support device according to claim 1, characterized in that: four side wall bodies of the frame body (42) are respectively provided with an adjustable supporting device (46) for supporting the plate spring assembly (431), the supporting device (46) comprises a mounting seat (461), a rotating shaft (462), two sliding seats (463), two supporting wheels (464) and two blocking bodies (465), the mounting seat (461) is arranged on the outer side surface of the side wall body of the frame body (42), a rotating shaft (462) which can be rotatably arranged is arranged on the mounting seat (461), sliding seats (463) which are in threaded connection are arranged on the rotating shaft (462) at the two sides of the mounting seat (461), the sliding seat (463) is positioned in a groove hole (47) which is arranged on the side wall body of the frame body (42) and corresponds to the sliding seat, the free ends of the sliding seats (463) are provided with supporting wheels (464) for supporting the plate spring assemblies (431), the sliding seats (463) are respectively provided with a baffle body (465) positioned at the inner side of the side wall body of the frame body (42).

6. A bridge anti-seismic support device according to claim 1, characterized in that: the rollers (433) are guide rail wheels, and the peripheral surface of the sliding body (44) is provided with guide rails (48) which correspond to the rollers (433) one by one and are matched with the rollers.

7. A bridge anti-seismic support device according to claim 1, characterized in that: be equipped with rotatable axis of rotation (410) on lower base (41), be equipped with turbine (411) on axis of rotation (410), be equipped with worm (412) of being connected with turbine (411) meshing on framework (42), be equipped with threaded connection's nut (413) on axis of rotation (410), the upper end of nut (413) is equipped with fixing base a (414) with bumper shock absorber (49) fixed connection.

8. A bridge anti-seismic support device according to claim 1, characterized in that: the second sliding plate (33) and the third sliding plate (310) are respectively provided with a rolling wheel b (311) which is abutted against the pushing body (39), the upper end of the pushing body (39) is provided with a fixed seat b (312) which is fixedly connected with the bridge (6), the fixed seat b (312) is welded with the pushing body (39), and the fixed seat b (312) is provided with a shaft body (313) which is arranged on the pushing body (39) in a penetrating mode.

9. An anti-seismic bridge supporting device as defined in any one of claims 1 to 8, wherein: coupling mechanism (2) are including preceding connector (21) and back connector (22), the one end of preceding connector (21) is through bolt and housing (1) fixed connection in the place ahead, and connecting seat (23) before the other end is equipped with, housing (1) fixed connection at bolt and rear is passed through to the one end of back connector (22), and the other end is equipped with back connecting seat (24), preceding connecting seat (23) are in the same place through bolt pair (25) fixed connection with back connecting seat (24), all be equipped with location arch (26) on preceding connector (21) and the back connector (22), be equipped with on housing (1) with location arch (26) matched with constant head tank (27).