CN216338994U

CN216338994U - Anti-seismic bridge structure

Info

Publication number: CN216338994U
Application number: CN202123110306.7U
Authority: CN
Inventors: 芦吉青
Original assignee: Xian University of Science and Technology
Current assignee: Xian University of Science and Technology
Priority date: 2021-12-11
Filing date: 2021-12-11
Publication date: 2022-04-19
Anticipated expiration: 2031-12-11

Abstract

The application relates to an anti-seismic bridge structure, and relates to the technical field of bridge construction. The damping device comprises a bridge span, a first damping component, an abutment and a second damping component, wherein the first damping component is located between the bridge span and the abutment and used for buffering the vibration of the bridge along the longitudinal direction, the second damping component is located at the joint of the abutment and the bridge span and used for buffering the vibration of the bridge along the transverse direction and the vertical direction. This application has the effect that improves bridge damping performance.

Description

Anti-seismic bridge structure

Technical Field

The application relates to the technical field of bridge construction, in particular to an anti-seismic bridge structure.

Background

In the long-distance highway construction, rivers, valleys and the like often need to be crossed, the bridge plays a main connecting role, and in the construction and use process, in order to avoid natural disasters such as earthquakes and the like to enable the bridge to generate large displacement in the space of the upper part, the lower part, the left part and the right part, the negative influence on the bridge caused by the earthquakes and the like is generally reduced by installing a damping device, and the probability of the displacement of the bridge is reduced.

In the correlation technique, an anti-seismic bridge structure is disclosed, which comprises a bridge, a pier and a damper, wherein one end of the damper is connected with the lower end of the bridge, and the other end of the damper is connected with the side surface of the pier close to the bridge.

In view of the above-mentioned related art, the damper damps the vibration of the bridge in the longitudinal direction, and the inventor believes that there is a problem in that the bridge has a poor damping effect.

SUMMERY OF THE UTILITY MODEL

In order to improve the shock attenuation effect, this application provides an antidetonation bridge structures.

In a first aspect, the application provides an earthquake-resistant bridge structure, which adopts the following technical scheme:

the utility model provides an antidetonation bridge structures, includes bridge span, first damper, abutment and second damper, first damper is located between bridge span and the abutment, first damper is used for buffering the vibrations of bridge along longitudinal direction, second damper is located abutment and bridge span junction, second damper is used for buffering the vibrations of bridge along transverse direction and vertical direction, reduces the probability that the bridge shifts along vertical, horizontal and vertical direction, improves the stability of bridge.

Through adopting above-mentioned technical scheme, when the peripheral geological state of bridge changes, the vibrations of first shock attenuation subassembly buffering bridge along longitudinal direction, and the vibrations of shock attenuation buffering subassembly buffering bridge along vertical direction and bridge span width direction improve bridge stability.

Optionally, second damper includes connecting block, reinforcing bar, installation pipe and elastic buffer, the spread groove has been seted up to the upper end that the abutment is close to the bay, the connecting block is installed in the spread groove, the connecting block upper end is connected with the bay, reinforcing bar through connection piece, the reinforcing bar axis is parallel with bay width direction, the reinforcing bar both ends are installed respectively in the installation pipe, the axis of installation pipe is parallel with bay width direction, the inside movable groove that has seted up of abutment, movable notch is towards the reinforcing bar, the installation pipe is arranged in movable groove, the one end that the reinforcing bar was kept away from to the installation pipe is connected with elastic buffer, elastic buffer is used for buffering the vibrations that the installation pipe produced along movable groove axis direction.

Through adopting above-mentioned technical scheme, when the peripheral geological state of bridge changes and arouses the abutment to rock, the reinforcing bar that runs through on the connecting block drives the installation pipe and shakes along being on a parallel with the bridge width direction at the activity inslot, and elastic buffer cushions the vibrations of installation pipe in the activity inslot, and the reinforcing bar cushions the vibrations of bridge in the transverse direction, reduces the probability that takes place relative displacement between abutment and the bridge.

Optionally, a connecting groove is formed in the middle of the bridge abutment close to the upper end of the bridge span, the connecting block is installed in the connecting groove, and a first flexible buffer piece is connected between the connecting block and the inner wall of the connecting groove.

Through adopting above-mentioned technical scheme, when the peripheral geological state of bridge changes, lateral vibration and vertical vibration between first flexible bolster buffering connecting block and the abutment reduce the probability that produces relative displacement between abutment and the bridge span.

Optionally, the first flexible buffer is a shock pad.

Through adopting above-mentioned technical scheme, the shock pad cushions the vibrations between connecting block and the abutment.

Optionally, a second flexible buffer is connected between the reinforcing steel bar and the installation pipe.

Through adopting above-mentioned technical scheme, when the abutment takes place to vibrate when the geological conditions around the bridge changes, the second flexible bolster can alleviate the vibrations of reinforcing bar in the installation pipe, reduces the probability that produces relative displacement between abutment and the bridge span.

Optionally, the second flexible buffer is a shock tube.

Through adopting above-mentioned technical scheme, the shock pad rubber buffering reinforcing bar and the vibrations between the installation pipe.

Optionally, the elastic buffer part is a damping spring, one end of the damping spring is connected with one end of the installation pipe far away from the steel bar, and the other end of the damping spring is connected with the inner wall of the movable groove close to the installation pipe.

Through adopting above-mentioned technical scheme, when the peripheral geological state of bridge takes place horizontal vibrations, elastic buffer can cushion the vibrations between installation pipe and the movable groove, and then alleviates the whole displacement degree of bridge in horizontal direction.

Optionally, first shock-absorbing component includes attenuator, first anchor block, second anchor block, a plurality of first bolt and a plurality of second bolt, first anchor block is connected through first bolt and abutment and is close to one side of bridge span, one side that the abutment was kept away from to first anchor block is connected with attenuator one end, the attenuator other end is connected with one side that the bridge span was kept away from to second anchor block, the second anchor block passes through the second bolt and is connected with the bottom that the bridge span is close to one side of bridge span.

Through adopting above-mentioned technical scheme, after first damper assembly used a period, the staff of being convenient for dismantled, overhauld and change.

In summary, the present application includes at least one of the following beneficial technical effects:

through setting up first damper and second damper, the horizontal vibrations effect and the vertical vibrations that the buffering bridge received reduce the probability that the bridge squinted in longitudinal direction, horizontal direction and vertical direction, improve bridge stability.

Through setting up attenuator and bridge bolted connection, the staff of being convenient for overhauls the maintenance to the attenuator.

Drawings

Fig. 1 is a schematic structural diagram of an earthquake-proof bridge structure according to an embodiment of the present application.

Fig. 2 is an enlarged view, partly in section, taken along the horizontal plane of the axis of the bar in fig. 1.

Fig. 3 is an enlarged view of a portion a in fig. 2.

FIG. 4 is a partial structural schematic view of the first shock absorbing assembly mounting structure seen in FIG. 1.

Description of reference numerals: 1. a bridge span; 2. a first dampening member; 21. a damper; 22. a first anchor block; 23. a second anchor block; 24. a first bolt; 25. a second bolt; 3. an abutment; 31. connecting grooves; 32. a movable groove; 4. a second dampening member; 41. connecting blocks; 411. a first flexible buffer; 42. reinforcing steel bars; 421. a second flexible buffer; 43. installing a pipe; 44. an elastomeric buffer.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses antidetonation bridge structures. Referring to fig. 1, 2 and 3, the earthquake-resistant bridge structure includes a bridge span 1, a first shock-absorbing assembly 2, an abutment 3 and a second shock-absorbing assembly 4. The second damping component 4 is located in the middle of the upper end of the abutment 3 close to the bridge span 1, the second damping component includes a connecting block 41, a reinforcing steel bar 42, a mounting tube 43, a movable groove 32 and an elastic damping member 44, the middle of the abutment 3 close to the upper end of the bridge span 1 is provided with a connecting groove 31, in this embodiment, the notch of the connecting groove 31 faces the bridge span 1, the connecting block 41 is installed in the connecting groove 31, in this embodiment, the height of the horizontal plane of the upper end of the connecting block 41 is the same as the height of the horizontal plane of the upper end of the abutment 3, a first flexible damping member 411 is laid between the connecting block 41 and the inner wall of the connecting groove 31 in advance, after the abutment 3 is cast, the first flexible damping member 411 is fixed between the connecting block 41 and the bottom wall of the connecting groove 31, the first flexible damping member 411 may be a damping pad or damping rubber, in this embodiment, the first flexible damping member 411 is a damping pad, the reinforcing steel bar 42 penetrates through the connecting block 41 and the first flexible damping member 411, the reinforcing steel bar 42 can move along the axial direction, the axial line of the reinforcing steel bar 42 is parallel to the width direction of the bridge span 1, two ends of the reinforcing steel bar 42 are respectively inserted in the mounting pipes 43, a second flexible buffer material is connected between the steel bar 42 and the mounting tube 43, the second flexible buffer 421 can be a shock pad, or a shock absorbing rubber, in this embodiment, the second flexible buffer 421 is a damping tube made of rubber, the axis of the mounting tube 43 is parallel to the width direction of the bridge span 1, the movable slot 32 is opened inside the bridge abutment 3, the mounting tube 43 is located in the movable slot 32, the opening of the movable slot 32 faces the reinforcing steel bar 42, in this embodiment, the elastic buffer 44 is a damping spring, one end of the damping spring is welded to the end of the mounting tube 43 away from the steel bar 42, the other end of the damping spring abuts against the bottom wall of the movable groove 32 close to the mounting tube 43, and the damping spring is used for buffering the vibration generated by the mounting tube 43 along the axial direction of the movable groove 32.

Referring to fig. 4, the first shock absorption assembly 2 is located between the bridge span 1 and the bridge abutment 3, the first shock absorption assembly 2 comprises a damper 21, a first anchor block 22, a second anchor block 23, a plurality of first bolts 24 and a plurality of second bolts 25, the first anchor block 22 is in bolt connection with one side, close to the bridge span 1, of the bridge abutment 3 through the first bolts 24, one side, far away from the bridge abutment 3, of the first anchor block 22 is in bolt connection with one end of the damper 21, the other end of the damper 21 is in bolt connection with one side, far away from the bridge span 1, of the second anchor block 23, the second anchor block 23 is in bolt connection with the bottom, close to one side of the bridge abutment 3, of the bridge span 1 through the second bolts 25, and after the first anchor block 22, the second anchor block 23 and the damper 21 are used for a period of time, and workers can conveniently detach, overhaul and replace the first anchor block 22, the second anchor block 23 and the damper 21.

The implementation principle of an anti-seismic bridge structure of the embodiment of the application is as follows: when the geological state around the bridge changes to cause the abutment 3 to vibrate, the first damping component 2 buffers the vibration of the bridge in the longitudinal direction, the first flexible damping component 411 between the connecting block 41 and the abutment 3 buffers the vibration between the connecting block 41 and the abutment 3 in the vertical direction and the transverse direction, and further buffers the vibration between the bridge span 1 and the abutment 3, the second flexible damping component 421 and the elastic damping component 44 buffer the vibration between the connecting block 41 and the abutment 3 in the transverse direction, and further buffers the amplitude of the transverse vibration between the bridge span 1 and the abutment 3, reduce the relative displacement between the bridge span 1 and the abutment 3, and improve the stability of the bridge.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An anti-seismic bridge structure, its characterized in that: including bridge span (1), first damper (2), abutment (3) and second damper (4), first damper (2) are located between bridge span (1) and abutment (3), first damper (2) are used for buffering the vibrations of bridge along longitudinal direction, second damper (4) are located bridge span (3) and bridge span (1) junction, second damper (4) are used for buffering the vibrations of bridge along transverse direction and vertical direction.

2. An earthquake-resistant bridge construction according to claim 1, wherein: the second damping component (4) comprises a connecting block (41), a reinforcing steel bar (42), an installation pipe (43) and an elastic buffer piece (44), the upper end of the bridge abutment (3) close to the bridge span (1) is provided with a connecting groove (31), the connecting block (41) is installed in the connecting groove (31), the upper end of the connecting block (41) is connected with the bridge span (1), the reinforcing steel bar (42) penetrates through the connecting block (41), the axis of the reinforcing steel bar (42) is parallel to the width direction of the bridge span (1), two ends of the reinforcing steel bar (42) are respectively installed in the installation pipe (43), the axis of the installation pipe (43) is parallel to the width direction of the bridge span (1), a movable groove (32) is formed inside the bridge abutment (3), the notch of the movable groove (32) faces towards the reinforcing steel bar (42), the installation pipe (43) is located in the movable groove (32), one end, far away from the reinforcing steel bar (42), of the installation pipe (43) is connected with the elastic buffer piece (44), the elastic buffer piece (44) is used for buffering the vibration generated by the mounting tube (43) along the axial direction of the movable groove (32).

3. An earthquake-resistant bridge construction according to claim 2, wherein: a first flexible buffer piece (411) is connected between the connecting block (41) and the inner wall of the connecting groove (31).

4. An earthquake-resistant bridge construction according to claim 3, wherein: the first flexible bumper (411) is a shock pad.

5. An earthquake-resistant bridge construction according to claim 2, wherein: and a second flexible buffer (421) is connected between the reinforcing steel bar (42) and the mounting pipe (43).

6. An earthquake-resistant bridge construction according to claim 5, wherein: the second flexible buffer (421) is a shock tube.

7. An earthquake-resistant bridge construction according to claim 2, wherein: elastic buffer piece (44) are damping spring, damping spring one end is connected with the one end that reinforcing bar (42) were kept away from in installation pipe (43), the damping spring other end and activity groove (32) are close to the interior wall connection of installation pipe (43).

8. An earthquake-resistant bridge construction according to claim 1, wherein: first shock-absorbing component (2) include attenuator (21), first anchor block (22), second anchor block (23), a plurality of first bolt (24) and a plurality of second bolt (25), first anchor block (22) are connected through one side that first bolt (24) and abutment (3) are close to bridge span (1), one side that bridge span (3) were kept away from in first anchor block (22) is connected with attenuator (21) one end, one side that bridge span (1) were kept away from in attenuator (21) other end and second anchor block (23) is connected, second anchor block (23) are connected through second bolt (25) and bridge span (1) bottom that is close to bridge span (3) one side.