CN217517349U

CN217517349U - Self-adaptive fast-assembling shock absorption and isolation support for highway bridge

Info

Publication number: CN217517349U
Application number: CN202221129660.6U
Authority: CN
Inventors: 郭金波
Original assignee: Anhui Mingtu Transportation Technology Co ltd
Current assignee: Anhui Mingtu Transportation Technology Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-30
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a self-adaptive fast-assembling shock absorption and isolation support for a highway bridge, which comprises a shock absorption support main body, a pre-buried steel plate, a plurality of fastening sleeves and a plurality of fastening mechanisms; the main body of the shock absorption support comprises an upper seat plate, a lower seat plate and a middle steel lining plate; the fastening mechanism comprises a fastening bolt and a wedge-shaped fixing block; the bottom of the upper seat plate is provided with an outer side barrier strip and an inner side barrier strip matched with the lower seat plate, and a damping device is arranged between the outer side barrier strip and the inner side barrier strip; the inner side barrier strip is fixed with the upper seat plate through the shearing bolt by the support, and the damping device is arranged between the outer side barrier strip and the inner side barrier strip, so that the damping device can generate damping during an earthquake and can automatically reset after the earthquake; in addition, through setting up a plurality of fastening sleeves, pre-buried steel sheet and having the fastening device of wedge fixed block, can adapt to the skew that the bridge beam supports takes place at the certain limit when the installation, guaranteed support installation intensity, effectively reduced the bridge beam supports the installation degree of difficulty on precast beam and steel box girder.

Description

Self-adaptive fast-assembling shock absorption and isolation support for highway bridge

Technical Field

The utility model relates to a bridge beam supports technical field, concretely relates to public road bridge roof beam of self-adaptation quick-witted shock insulation support that subtracts.

Background

At present, the domestic bridge support mainly has the following shock absorption and isolation products: high damping rubber support, lead core shock insulation rubber support, hyperboloid ball-type support, friction pendulum ball-type support and the like.

The high-damping rubber support is made of rubber as a main material, so that the defects of different product hardness, different compression deformation, different beam stress and rubber aging exist. Heavy metal lead is used as a main material for yielding energy absorption in the lead core shock insulation rubber support, and the lead belongs to heavy metals, so that the defect that the environmental protection requirement does not reach the standard exists.

The hyperboloid ball-type support and the friction pendulum ball-type support have complicated structures, the structure utilizes the difference of upper and lower curved surfaces to respectively carry out beam body corner and relieve the effect of earthquake force, however, because the upper curved surface is great and has great displacement, consequently, the plane size of the upper part of the support is great, and the whole height of the support and the cost are all higher, and when an earthquake occurs, because the upper curved surface moves, the defect that the beam body on the upper part of the support rises is caused. And various supports can not generate damping per se during the earthquake, and can not automatically reset after the earthquake.

In addition, the support in road and bridge engineering needs to meet the damping function, and needs an improved series of supports which allow the bridge support to deviate within a certain range in the support installation process and reduce the support installation time.

When the road and bridge engineering beam slab in the prior art is erected, a constructor firstly connects a support with a pre-buried steel plate through bolts, then hoists the beam slab to the upper side of an abutment base stone, aligns and adjusts bolts at the lower part of the support with bolt holes on the base stone, then slowly falls down to place the beam on a temporary support, places a template between the bottom of the support and the base stone, pours concrete, and removes the temporary support after waiting for final setting of the concrete.

In the above content, the construction difficulty of aligning the bolt at the lower part of the support with the bolt hole on the cushion stone is high, the support is easy to deviate, the operation level of engineering machinery and operators is higher, and meanwhile, the phenomenon that the bolt hole is not reserved in the pre-buried steel plate can also occur under partial conditions, so that the support cannot be installed at the bottom of a beam firstly. The waiting time for the cast-in-place of concrete is long or the economic cost is high.

Disclosure of Invention

For overcoming prior art's defect, the utility model aims to provide a highway bridge subtracts isolation bearing of self-adaptation fast dress to can not automatic re-setting after solving the bridge earthquake, the construction degree of difficulty is high among the bridge beam supports installation, and the support takes place the skew easily, and the problem at the bottom of the beam can't be installed earlier to the support.

Therefore, the utility model provides a self-adaptive fast-assembling shock absorption and isolation support for a highway bridge, which comprises a shock absorption support main body, a pre-buried steel plate, a plurality of fastening sleeves and a plurality of fastening mechanisms; the damping support main part includes bedplate, lower bedplate and middle steel liner board, and pre-buried steel sheet setting is at the bedplate upside, and fastening device distributes around last bedplate to be located the fastening sleeve below, the fastening sleeve setting is at pre-buried steel sheet upside and be connected with it.

The fastening mechanism comprises a fastening bolt and a wedge-shaped fixing block; the inclined plane of the wedge-shaped fixing block is matched with the shape of the end face of the upper base plate; the fastening bolt can penetrate through the wedge-shaped fixing block and the embedded steel plate to be in threaded connection with the fastening sleeve; the up-and-down movement of the wedge-shaped fixing block is controlled by adjusting the screwing depth of the fastening bolt into the fastening sleeve, and the damping support body in an offset state is fixed; the bottom of the upper seat plate is provided with an outer side barrier strip and an inner side barrier strip matched with the lower seat plate, a damping device is arranged between the outer side barrier strip and the inner side barrier strip, and the inner side barrier strip is fixed with the upper seat plate through a shearing bolt.

Further, the main body of the damping support is a spherical support, wherein the top surface of the middle steel lining plate is a plane, and the bottom surface of the middle steel lining plate is a convex spherical surface; the top surface of the lower base plate is a concave spherical surface which is matched with the shape of the middle steel lining plate.

Further, the damping support main part is the basin formula support, and wherein, the top surface and the bottom surface of middle steel lining board all are the plane, and the shape and the middle steel lining board phase-match of bedplate down are equipped with the pressure-bearing rubber slab down between bedplate and the middle steel lining board.

Further, a supporting plate is arranged on the lower side of the damping device and is arranged at the bottom of the outer barrier strip through a fixing bolt.

Furthermore, an anti-falling oil wire rope is arranged between the inner side barrier strip and the upper seat plate.

Further, the damping means may be a polyurethane spring, an elastic bow plate, a coil spring or a high damping rubber.

Furthermore, the fastening mechanism is an L-shaped fastening mechanism, one end of the wedge-shaped fixing block is a vertical surface, and the other end of the wedge-shaped fixing block is an inclined surface.

Further, fastening device designs for T type fastening device, and both ends all have the inclined plane about the wedge fixed block.

Furthermore, a plurality of bolt holes I are formed in the embedded steel plate, and bolt holes II are formed in the wedge-shaped fixing block.

Furthermore, each fastening mechanism corresponds to the first three bolt holes and the first three fastening sleeves, and the fastening sleeves and the first bolt holes of the same group are distributed on the embedded steel plate in an array mode.

The utility model provides a public road bridge roof beam of self-adaptation quick-mounting subtracts isolation bearing is fixed inboard blend stop through cutting the bolt with last seat mutually to set up damping device between outside blend stop and inboard blend stop, thereby self can produce the damping during the earthquake, can automatic re-setting after the earthquake. And an anti-falling oil silk rope is arranged between the inner side barrier strip and the upper seat plate to prevent the inner side barrier strip from falling.

Through setting up a plurality of fastening sleeves, pre-buried steel sheet and having the fastening device of wedge fixed block, can adapt to the skew that the bridge beam supports takes place at the certain limit when the installation, the adaptation falls the construction mode of roof beam board again with the bearing mounting on the support bed stone earlier simultaneously, and fastening device passes through bolted connection, has guaranteed support installation intensity, has effectively reduced the bridge beam supports and has installed the degree of difficulty on precast beam and steel box girder.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a top view of a self-adaptive fast-mounting road bridge seismic isolation bearing;

FIG. 2 is a semi-sectional view of a self-adaptive fast-mounting road bridge seismic isolation and reduction support with a spherical support;

FIG. 3 is a partial enlarged view of a self-adaptive fast-assembly highway bridge seismic isolation and reduction support with a spherical support;

FIG. 4 is a schematic structural diagram of the self-adaptive fast-mounting highway bridge seismic isolation and reduction support with the basin-shaped support;

FIG. 5 is an enlarged view of the matching of an L-shaped fastening mechanism and an upper seat plate in the self-adaptive fast-assembly highway bridge seismic isolation bearing;

FIG. 6 is an enlarged view of the matching of a T-shaped fastening mechanism and an upper seat plate in the self-adaptive fast-assembly highway bridge seismic isolation bearing;

FIG. 7 is a top view of an adaptive fast-mounting road bridge seismic mitigation and isolation bearing with an array type fastening mechanism;

FIG. 8 is an enlarged view of an array type fastening mechanism and an upper seat plate in the self-adaptive fast-assembly highway bridge seismic isolation bearing.

Description of the reference numerals

1. Fastening the sleeve; 2. pre-burying a steel plate; 3. a fastening mechanism; 4. an outer barrier strip; 5. an inner barrier strip; 6. a damping device; 7. a support plate; 8. fixing the bolt; 9. shearing the bolt; 10. an anti-falling oil rope; 11. an upper seat plate; 12. a lower seat plate; 13. an intermediate steel liner plate; 14. a pressure-bearing rubber plate; 21. a first bolt hole; 31. fastening a bolt; 32. a wedge-shaped fixing block.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-2, the self-adaptive fast-assembling shock absorption and isolation support for the highway bridge of the present invention comprises a shock absorption support main body, a pre-buried steel plate 2, a plurality of fastening sleeves 1 and a plurality of fastening mechanisms 3; the damping support main body comprises an upper seat plate 11, a lower seat plate 12 and a middle steel lining plate 13, the embedded steel plate 2 is arranged on the upper side of the upper seat plate 11, the fastening mechanisms 3 are distributed around the upper seat plate 11 and are positioned below the fastening sleeve 1, and the fastening sleeve 1 is arranged on the upper side of the embedded steel plate 2 and is connected with the embedded steel plate; the damping support body in the offset state is fixed through the fastening mechanism and the fastening sleeve threads.

Specifically, as shown in fig. 2 and 3, the main body of the shock absorbing support is a spherical support, the top surface of the lower seat plate 12 is a concave spherical surface, a middle steel lining plate 13 with a plane top surface and a convex spherical bottom surface is arranged between the upper seat plate 11 and the lower seat plate 12, an outer barrier strip 4 and an inner barrier strip 5 matched with the lower seat plate 12 are arranged at the bottom of the upper seat plate 11, a damping device 6 is arranged between the outer barrier strip 4 and the inner barrier strip 5, a supporting plate 7 supporting the damping device 6 is arranged at the bottom of the outer barrier strip 4 through a fixing bolt 8, the inner barrier strip 5 is fixed with the upper seat plate 11 through a shear bolt 9, and an anti-falling oil wire rope 10 is arranged between the inner barrier strip 5 and the upper seat plate 11. Wherein, the damping device 6 can be a polyurethane spring, an elastic bow plate, a spiral spring or high damping rubber.

In the seismic isolation and reduction support main body, the inner side barrier strip 5 is fixed with the upper seat plate 11 through the shear bolt 9, after the seismic force exceeds the shearing force of a normal beam plate, the shear bolt 9 is broken, meanwhile, the lateral movement is generated, the traction resistance of an upper lower part structure caused by the seismic force is reduced, along with the increase of the movement amount, the damping device 6 between the outer side barrier strip 4 and the inner side barrier strip 5 plays a role in increasing the damping force, and the outer side barrier strip 4 provides a damping counter-force foundation. After the earthquake is finished, the damping device 6 between the outer side barrier strip 4 and the inner side barrier strip 5 restores the support to the original position, and the shear bolt 9 and the inner side barrier strip 5 are repaired manually, so that the original function of the support is restored. And an anti-falling oil wire rope 10 is arranged between the inner side barrier strip 5 and the upper seat plate 11 to prevent the inner side barrier strip 5 from falling off.

As shown in fig. 2, the pre-buried steel plate 2 is used as a main bearing platform, a fastening sleeve 1 and a fastening mechanism 3 are attached to the pre-buried steel plate 2, and the pre-buried steel plate 2 is located between the fastening sleeve 1 and the fastening mechanism 3; fastening sleeve 1 is fixed in one side of pre-buried steel sheet 2, and fastening device 3 is located pre-buried steel sheet 2 opposite side, is connected with fastening sleeve 1 through bolt hole 21 on the pre-buried steel sheet 2.

As shown in fig. 5, the fastening mechanism 3 is a main limiting component and is used for limiting and fixing the upper seat plate 11, the fastening mechanism 3 is composed of a fastening bolt 31 and a wedge-shaped fixing block 32, a bolt hole two is formed in the wedge-shaped fixing block 32, the fastening bolt 31 can be screwed into the bolt hole two, the wedge-shaped fixing block can rotate around the fastening bolt, and the fastening bolt 31 is connected with the fastening sleeve 1 through the bolt hole one in the embedded steel plate 2. The periphery of the upper seat plate 11 is chamfered or beveled, and the inclination angle is matched with the shape of the wedge-shaped fixed block 32.

As shown in fig. 2, before the upper seat plate 11 is fixed, the upper seat plate 11 is first placed at the center position below the embedded steel plate 2. The vertical movement of the wedge-shaped fixed block 32 is controlled by adjusting the depth of the fastening bolt 31 screwed into the fastening sleeve 1, the fastening sleeve 1 ensures the normal screwing-in and screwing-out of the fastening bolt, the vertical movement of the wedge-shaped fixed block is transferred to the clamping of the upper seat plate through the inclined plane of the wedge-shaped fixed block, and after the upper seat plate 11 deviates to one side, the peripheral fastening mechanisms are respectively adjusted to the inclined plane of the wedge-shaped fixed block 32 to tightly attach to the upper seat plate, so that the fixing work of the upper seat plate is completed.

Before installing the support, need be pre-buried to the beam bottom with pre-buried steel sheet 2, it is outside to rotate the inclined plane of the wedge fixed block 32 on fastening device 3 simultaneously. When the support is installed, the support can be installed at the top of the support base cushion stone, then the beam plate is hoisted and placed at the top of the support, the wedge-shaped steel block is rotated to enable the inclined plane to rotate the support and the fastening bolt to be screwed into the fastening sleeve, and the wedge-shaped steel block is tightly attached to the upper seat plate to complete support installation.

In the scheme, the fastening sleeve 1 is fixed above the embedded steel plate 2, can prevent concrete or foreign matters from influencing the adjusting performance of the fastening mechanism, and can increase the cohesiveness with the concrete and the connection points with other structures.

Aiming at different fastening conditions, the self-adaptive fast-assembly highway bridge seismic isolation bearing has different structural forms of the components.

As shown in fig. 5, the pre-assembled self-adaptive fast-assembled road bridge seismic isolation bearing is suitable for engineering projects with small fixed working faces, the fastening mechanism 3 of the pre-assembled self-adaptive fast-assembled road bridge seismic isolation bearing is an L-shaped fastening mechanism, the fastening mechanism is connected to an embedded steel plate in advance, the fastening mechanism is designed to be L-shaped for adapting to possible deviation of an upper seat plate when the upper seat plate is placed, one end of a wedge-shaped fixing block 32 is a vertical surface, the other end of the wedge-shaped fixing block 32 is an inclined surface (as shown in fig. 5), and the wedge-shaped surface of the wedge-shaped fixing block is turned to the outer side in advance.

As shown in figure 6, the rear-mounted type is suitable for engineering projects with large fixed working faces, the fastening mechanism of the road bridge seismic mitigation and isolation support of the rear-mounted type self-adaptive quick mounting is screwed into the fastening sleeve through a bolt hole in the embedded steel plate after the upper base plate is placed, in order to improve the convenience degree during fastening, the fastening mechanism is designed to be a T-shaped fastening mechanism, and inclined planes are arranged at the left end and the right end of the wedge-shaped fixing block 32.

As shown in fig. 7-8, the array type self-adaptive fast-assembly road bridge seismic isolation bearing is suitable for an upper base plate with a large component size and a large predicted offset, the array type self-adaptive fast-assembly road bridge seismic isolation bearing is formed by combining and arranging a plurality of groups of fastening sleeves in an array manner, meanwhile, a first bolt hole arranged on an embedded steel plate 2 is increased, the fastening sleeves 1 and a first bolt hole 21 in the same group are distributed in an array manner, and each fastening mechanism corresponds to a first three bolt hole and a first three fastening sleeve 1; when the upper seat plate offset exceeds the range of the single set of fastening mechanisms, the fastening mechanism can be moved into another fastening sleeve to match the larger offset of the upper seat plate.

In another embodiment, as shown in fig. 4, the shock mount body is a basin mount; wherein, the shock mount main part of basin formula includes seat board 11 and lower seat board 12, is provided with between seat board 11 and the lower seat board 12 that the top surface and bottom surface all are planar middle steel lining board 13, and lower seat board 12 is the basin formula, and the shape and the middle steel lining board 13 phase-match of lower seat board 12, and is equipped with pressure-bearing rubber slab 14 between lower seat board 12 and the middle steel lining board 13.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a highway bridge that self-adaptation was adorned soon subtracts isolation bearing which characterized in that includes: the damping support comprises a damping support body, an embedded steel plate (2), a plurality of fastening sleeves (1) and a plurality of fastening mechanisms (3); the damping support main body comprises an upper seat plate (11), a lower seat plate (12) and a middle steel lining plate (13), the embedded steel plate (2) is arranged on the upper side of the upper seat plate (11), the fastening mechanisms (3) are distributed around the upper seat plate (11) and located below the fastening sleeve (1), and the fastening sleeve (1) is arranged on the upper side of the embedded steel plate (2) and connected with the embedded steel plate;

the fastening mechanism (3) comprises a fastening bolt (31) and a wedge-shaped fixing block (32); the inclined surface of the wedge-shaped fixing block (32) is matched with the end surface shape of the upper seat plate (11); controlling the up-and-down movement of the wedge-shaped fixing block (32) by adjusting the depth of the fastening bolt (31) screwed into the fastening sleeve (1); fixing the damping support main body in an offset state;

the bottom of the upper seat plate (11) is provided with an outer side barrier strip (4) and an inner side barrier strip (5) matched with the lower seat plate (12), a damping device (6) is arranged between the outer side barrier strip (4) and the inner side barrier strip (5), and the inner side barrier strip (5) is fixed with the upper seat plate (11) through a shearing bolt (9).

2. The adaptive fast-assembling road bridge seismic isolation bearing according to claim 1, wherein the main body of the seismic isolation bearing is a spherical bearing, wherein the top surface of the middle steel lining plate (13) is a plane, and the bottom surface of the middle steel lining plate is a convex spherical surface; the top surface of the lower seat plate (12) is a concave spherical surface and is matched with the shape of the middle steel lining plate (13).

3. The adaptive fast-assembly road bridge seismic isolation bearing according to claim 1, characterized in that the damping bearing body is a basin-shaped bearing, wherein the top surface and the bottom surface of the middle steel lining plate (13) are both planes, the shape of the lower base plate (12) is matched with that of the middle steel lining plate (13), and a pressure-bearing rubber plate (14) is arranged between the lower base plate (12) and the middle steel lining plate (13).

4. The adaptive quick-mounting road bridge seismic isolation bearing according to claim 1, characterized in that a supporting plate (7) is arranged on the lower side of the damping device (6), and the supporting plate (7) is arranged at the bottom of the outer barrier strip (4) through a fixing bolt (8).

5. The adaptive fast-assembly road bridge seismic isolation bearing according to claim 1, characterized in that an anti-drop oil wire rope (10) is arranged between the inner side barrier strip (5) and the upper seat plate (11).

6. The adaptive fast-mounting road bridge seismic isolation bearing according to claim 1, characterized in that the damping device (6) is a polyurethane spring or high-damping rubber.

7. The adaptive fast-assembly road bridge seismic mitigation and isolation bearing according to claim 1, wherein the fastening mechanism (3) is an L-shaped fastening mechanism, one end of the wedge-shaped fixing block (32) is a vertical surface, and the other end of the wedge-shaped fixing block (32) is an inclined surface.

8. The adaptive quick-mounting highway bridge seismic mitigation and isolation support seat according to claim 1, wherein the fastening mechanism (3) is designed as a T-shaped fastening mechanism, and inclined surfaces are arranged at the left end and the right end of the wedge-shaped fixing block (32).

9. The adaptive fast-assembly road bridge seismic mitigation and isolation bearing according to claim 1, wherein a plurality of first bolt holes (21) are formed in the embedded steel plate (2), and a second bolt hole is formed in the wedge-shaped fixing block (32).

10. The adaptive quick-mounting road bridge seismic mitigation and isolation bearing according to claim 1, wherein each fastening mechanism (3) corresponds to three bolt holes I (21) and three fastening sleeves I (1), and the fastening sleeves I (1) and the bolt holes I (21) in the same group are distributed on the embedded steel plate (2) in an array mode.