CN214882916U - Shock absorption and isolation damper and shock absorption and isolation device - Google Patents

Abstract

The utility model discloses an earthquake reduction and isolation damper and an earthquake reduction and isolation device, wherein the earthquake reduction and isolation damper comprises a spiral earthquake reduction and isolation main body rotating for a circle, the surface of the earthquake reduction and isolation main body is a smooth cambered surface, more than two thirds of sections of the earthquake reduction and isolation main body are deformation energy consumption sections when the earthquake reduction and isolation main body is deformed under stress, the earthquake reduction and isolation main body is provided with two upper and lower spaced end parts, and the two end parts are respectively connected with a force transmission connecting part; the shock absorption and isolation device comprises a shock absorption and isolation support, the shock absorption and isolation support comprises an upper seat plate and a lower seat plate, at least one shock absorption and isolation damper is connected between the outer edges of the upper seat plate and the lower seat plate, and two force transmission connecting parts of each shock absorption and isolation damper are connected with the upper seat plate and the lower seat plate through connecting pieces respectively. The utility model discloses the structure is succinct, change the convenience, does not receive the restriction of support height, and arbitrary horizontal direction all can realize the energy consumption shock attenuation, can effectively prolong structure cycle, provides stable and higher damping ratio, can be by computational analysis and experimental realization to damping force, horizontal displacement, plastic deformation, damping ratio isoparametric effective control.

Description

Shock absorption and isolation damper and shock absorption and isolation device

Technical Field

The utility model relates to a bridge subtracts isolation bearing technical field, especially relates to an subtract isolation bearing attenuator and subtract isolation bearing device.

Background

Bridge bearings are important connection means arranged between the upper and lower structures of a bridge. At present, spherical steel supports and pot rubber supports are widely applied, but the two types of supports do not have obvious seismic isolation and reduction functions. Aiming at the damage of the earthquake to the bridge, arranging a seismic isolation device or a damper between a beam body and a pier of the bridge becomes an important means for designing the seismic isolation of the bridge.

The shock absorption and isolation device used at present comprises a lead core rubber support, a high-damping rubber support, a friction pendulum support, a viscous damper, a metal damper and the like, wherein the metal damper comprises an E-shaped steel damper, an X-shaped steel damper and the like. From the technical point of view, these seismic isolation and reduction devices have certain disadvantages, such as: the initial stiffness of the lead rubber bearing is small. The vertical displacement of friction pendulum support during operation raises the circuit elevation easily and has the influence to the driving, and damping ratio descends during big displacement. The operating life or durability of viscous dampers is questioned. The E-shaped steel and X-shaped steel dampers are subjected to unidirectional stress, so that the shock absorption and isolation functions of the E-shaped steel dampers and the X-shaped steel dampers are limited by the directivity, and the E-shaped steel dampers and the X-shaped steel dampers are greatly influenced by the space between the beam bottom and the pier top.

In view of the technical current situation of the bridge seismic isolation and reduction device, how to design a seismic isolation and reduction damper and a seismic isolation and reduction device which have the advantages of simple structure, convenient replacement, no limitation of the height of a support, capability of realizing energy consumption and shock absorption in any horizontal direction, stability and higher damping ratio, and capability of effectively controlling damping force, horizontal displacement, plastic deformation, damping ratio and other parameters through calculation analysis and tests becomes the subject of intense research of the inventor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an subtract shock insulation damper and subtract shock insulation device, its structure is succinct, change the convenience, does not receive the restriction of support height, and arbitrary horizontal direction all can realize the energy dissipation shock attenuation, can effectively prolong structural cycle, provides stable and higher damping ratio, and can be by computational analysis and experimental realization to damping force, horizontal displacement, plastic deformation, damping ratio isoparametric effective control.

In order to achieve the above object, the utility model provides a subtract shock insulation damper, wherein subtract the shock insulation main part including the heliciform, subtract shock insulation main part surface for smooth cambered surface, subtract the shock insulation main part and be two-thirds the district section more than when the atress warp for warping the energy consumption section, subtract the shock insulation main part and have two and be upper and lower interval formation open-ended tip, two connect biography power connecting portion on the tip respectively.

Preferably, the seismic isolation and reduction body is a spiral structure body which is circular in cross section and rotates for one circle.

Preferably, the seismic isolation and reduction body is made of high-quality carbon steel LY345Q for seismic resistance.

Preferably, the force transmission connecting part comprises a connecting sleeve, and the connecting sleeve is inserted into and fixed with the end part of the seismic isolation and reduction main body.

Preferably, the connecting sleeve is a cylindrical steel cylinder, and the outer diameter of the cross section of the connecting sleeve is 1.2-1.4 times of the diameter of the cross section of the seismic isolation and reduction body.

Preferably, the length of the end part of the seismic isolation and reduction main body inserted into the connecting sleeve is 2.0-2.5 times of the diameter of the cross section of the seismic isolation and reduction main body.

Preferably, the side wall of the connecting sleeve is provided with a connecting seat, and the connecting sleeve and the connecting seat are integrally manufactured or connected.

Preferably, the connecting base comprises a plurality of rib plates connected with the side wall of the connecting sleeve, the other ends of the plurality of rib plates are connected with the inner surface of the bottom plate, the outer surface of the bottom plate is connected with the connecting plate, and the connecting plate is provided with a connecting hole.

The utility model provides an subtract isolation bearing, its characterized in that, is including subtracting isolation bearing, subtract isolation bearing and include upper seat board and lower bedplate, be connected with at least one between the outer fringe of upper seat board and lower bedplate subtract isolation damper, each subtract two of isolation damper pass through the connecting piece respectively power connecting portion with the upper seat board reaches the lower bedplate is connected.

Preferably, the seismic isolation and reduction support is a spherical steel support or a pot rubber support.

After the scheme is adopted, the utility model discloses subtract isolation damper and subtract isolation device has following beneficial effect:

(1) the utility model discloses it is succinct to subtract shock insulation attenuator structural design, can regard as and subtract shock insulation device exclusive use, it implements fixed connection with roof beam body beam bottom and lower part pier top surface respectively through two biography power connecting portions, bear and reduce the earthquake power of any direction, realize the shock insulation demand of subtracting of bridge in arbitrary horizontal direction, or subtract shock insulation device and roof beam body beam bottom and lower part pier top surface implementation fixed connection by subtracting shock insulation attenuator and support connection constitution, because subtract shock insulation attenuator not receive subtract the restriction of shock insulation support height, energy dissipation shock attenuation can all be realized to arbitrary horizontal direction, realize the shock insulation demand of subtracting of bridge in arbitrary horizontal direction;

(2) the shock absorption and isolation main body of the shock absorption and isolation damper adopts the production process of bending and forming round steel bar at high temperature, so that the material consumption and the processing amount can be reduced to the maximum extent, the product cost can be reduced, and the product competitiveness can be improved;

(3) the utility model discloses subtract the shock insulation device and connect the mode of realizing parallelly connected use on same subtract shock insulation support through adopting a plurality of subtract shock insulation dampers, effectively improved the damping ratio of subtracting the shock insulation, the bridge subtracts the shock insulation design demand when satisfying different seismic intensity conditions;

(4) the utility model discloses subtract isolation bearing's the side that subtracts isolation bearing adopts external form to arrange at the bridge and subtract isolation bearing, and when normal operation, bridge beam supports undertakes vertically downwards, subtracts isolation bearing atress not, and when the earthquake, subtracts isolation bearing and undertakes earthquake horizontal force, can effectively reduce bridge beam supports and subtract isolation bearing's plane size and structure height, is favorable to the maintenance and the change in later stage

(5) When an earthquake occurs, the shock absorption and isolation damper of the utility model enters a plastic working state, and the earthquake action is reduced by prolonging the structural period and the plastic energy consumption, so that a good shock absorption and isolation effect is obtained;

(6) the utility model discloses can be by computational analysis and experimental realization to damping force, horizontal displacement, plastic deformation, damping ratio isoparametric effective control, the earthquake effect is calculated to the accuracy to the realization subtracts isolation design and control to bridge substructure foundation.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of an embodiment of the seismic isolation and reduction damper of the present invention;

FIG. 2 is a schematic view of the three-dimensional structure of the seismic isolation and reduction main body of the seismic isolation and reduction damper of the present invention;

FIG. 3 is a schematic view of the force transmission connection portion of the seismic isolation and reduction damper according to the present invention;

FIG. 4 is a schematic view of the force transmission connection portion of the seismic isolation and reduction damper according to the present invention;

fig. 5 is a schematic structural view of an embodiment of the seismic isolation and reduction device of the present invention.

Detailed Description

The invention will be elucidated below on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications that have the same meaning as the scope of the claims and are within the scope of the claims.

The utility model relates to an subtract shock insulation attenuator and subtract shock insulation device that follows combined description figure is concrete to be elucidated.

As shown in fig. 1 the utility model discloses subtract isolation damper's embodiment spatial structure sketch map, subtract isolation main part 1 including the heliciform, it is shown with reference to fig. 2 that this embodiment subtracts isolation main part 1 is the circular shape spiral barred body for rotatory round, cross section, should subtract isolation main part 1 along the axis direction for the uniform cross section, should subtract isolation main part 1 for circular in the top view. Subtract shock insulation main part 1 and guarantee that there is the district section more than two thirds for the deformation energy consumption section when the atress warp, subtract the surface of shock insulation main part 1 and be smooth cambered surface, subtract shock insulation main part 1 and have two and be upper and lower interval formation opening 2's tip 3, so the interval sets up about adopting, is not influenced when warping for making this subtract shock insulation main part 1. In order to provide larger plastic deformation and higher damping ratio, the seismic isolation and reduction main body 1 of the embodiment is formed by bending high-quality carbon steel LY345Q for seismic resistance with better plasticity and toughness after being heated at high temperature. The yield ratio is controlled to be below 0.72, and the low cycle fatigue test of the seismic isolation and reduction main body 1 under the design displacement condition reaches more than 15 cycles.

Two end parts 3 of the seismic isolation and reduction main body 1 are respectively connected with a force transmission connecting part 4.

Referring to fig. 3 and 4, the force transmission connecting part 4 comprises a cylindrical connecting sleeve 5, the connecting sleeve 5 is made of 45-grade steel or Q345-grade steel, and the connecting sleeve 5 is fixed with the end part of the seismic isolation and reduction main body 1 in a welding mode after being inserted. The cross-sectional outer diameter of the connecting sleeve 5 is 1.2 to 1.4 times, preferably 1.3 times, the cross-sectional diameter of the seismic isolation body 1. The design can ensure that the connecting sleeve 5 is still in a linear elastic working state when the seismic isolation and reduction main body 1 enters a plastic deformation state. The length of the end part of the seismic isolation and reduction main body 1 inserted into the connecting sleeve 5 is 2.0-2.5 times of the diameter of the cross section of the seismic isolation and reduction main body 1, and the reliability of force transmission connection work can be guaranteed through the design.

The connecting sleeve 5 is provided with a connecting seat 6 on the side wall, and the connecting sleeve 5 and the connecting seat 6 are integrally manufactured or connected. In the embodiment, the connecting sleeve 5 and the connecting seat 6 are preferably welded into a whole, and then the connecting sleeve is reliably connected with the upper and lower seat plates of the support through the high-strength bolt, so that the horizontal force (including shearing force, bending moment and torque) of the shock insulation main body 1 is transmitted and decreased.

The connecting seat 6 comprises a plurality of rib plates 7 welded with the side wall of the connecting sleeve 5, the other ends of the plurality of rib plates 7 are welded with the inner surface of a bottom plate 8 vertically arranged in the drawing, the lower part of the outer surface of the bottom plate 8 is welded with a connecting plate 9 horizontally arranged, and a plurality of connecting holes 10 are arranged on the connecting plate 9.

The utility model discloses subtract isolation damper can the exclusive use, also can jointly use with ordinary ball-type steel support or basin formula rubber support. When the utility model discloses subtract shock insulation attenuator when using alone, pass connecting sleeve 5 of biography power connecting portion 4 by connecting seat 6 through high strength bolt and upper portion roof beam body structure's bottom surface and lower part pier top surface fixed connection, through two connecting plates 9 that pass power connecting portion 4 by high strength bolt respectively with roof beam body beam bottom and lower part pier top surface implement fixed connection, bear and reduce the earthquake power of any direction, realize the bridge at arbitrary ascending shock insulation demand that subtracts of horizontal direction.

As shown in FIG. 5, the utility model discloses subtract isolation device's embodiment structure schematic diagram, including subtracting isolation bearing 11, subtract isolation bearing 11 and adopt ball-type steel support or benzvalene form rubber support. This embodiment adopts ball-type steel bearing, and this subtract isolation bearing 11 includes bedplate 12 and lower bedplate 13, goes up bedplate 12 and is equipped with at least lower surface for the well bedplate 14 of sphere between the bedplate 13 down, and this embodiment has adopted the lower surface to be the well bedplate 14 of sphere, also can adopt the well bedplate that upper and lower surface is the sphere, is the utility model discloses the scope of protection is equipped with base 15 between well bedplate 14 and lower bedplate 13, and this base 15's upper surface is the sphere that matches with the spherical lower surface of well bedplate 14, and base 15's lower surface is the plane that corresponds with lower bedplate 13. In this embodiment, a planar first friction pair 16 is disposed between the upper seat plate 12 and the middle seat plate 14, a spherical second friction pair 17 is disposed between the middle seat plate 14 and the base 15, and a planar third friction pair 18 is disposed between the base 15 and the lower seat plate 13. At least one seismic isolation and reduction damper 19 shown in fig. 1 is connected between the outer edges of the upper seat plate 12 and the lower seat plate 13, and the two seismic isolation and reduction dampers 19 are symmetrically connected to the left and right sides of the seismic isolation and reduction support 11. The two force transmission connecting parts 4 of each seismic isolation and reduction damper 19 are respectively connected with the upper seat plate 12 and the lower seat plate 13 through connecting pieces, and the connecting pieces of the embodiment adopt high-strength bolts 20.

As shown in fig. 5, the installation method of the seismic isolation and reduction device of the present invention comprises the following steps:

(1) manufacturing the seismic isolation damper 19: and (3) processing and manufacturing two spiral seismic isolation and reduction bodies 1 rotating for one circle, wherein the seismic isolation and reduction bodies 1 are circular in a plan view. Two end parts 3 of each seismic isolation and reduction main body 1 are arranged at intervals up and down to form an opening 2;

(2) manufacturing a force transmission connecting part 4: manufacturing four cylindrical connecting sleeves 5 made of 45-grade steel or Q345 steel, and connecting seats 6 are respectively connected to the side walls of the connecting sleeves 5 in a welding mode to form four force transmission connecting parts 4;

(3) installing a force transmission connecting part 4: respectively inserting the connecting sleeves 5 of the four force transmission connecting parts 4 in the step (2) into the four end parts 3 of the two seismic isolation and reduction main bodies 1 in the step (1), and welding and fixing each end part 3 and the corresponding connecting sleeve 5 in a welding mode;

(4) assembling the seismic isolation and reduction device: and (4) moving the seismic isolation and reduction dampers 19 respectively provided with the two force transmission connecting parts 4 in the step (3) to the seismic isolation and reduction support 11 for matching use for positioning, and fixing the two force transmission connecting parts 4 on each seismic isolation and reduction main body 1 with the outer edges of the upper seat plate 12 and the lower seat plate 13 of the seismic isolation and reduction support 11 through high-strength bolts 20 in a threaded manner.

In order to facilitate transportation and field installation of the seismic isolation and reduction support 11, when the support leaves a factory, the seismic isolation and reduction damper 19 is not installed, and after the beam erection on the field is completed, the seismic isolation and reduction damper 19 is installed and fixed.

The utility model discloses subtract seismic isolation device will be connected with the upper saddle board 12, the lower saddle board 13 that subtract seismic isolation attenuator 19 through a plurality of high strength bolts 20 respectively with the roof beam body beam bottom and lower part pier top surface implementation fixed connection, form a set of complete bridge subtract seismic isolation system, the vertical power of this system superstructure is undertaken by ball-type steel support or basin formula rubber support, the earthquake horizontal force is undertaken by subtracting seismic isolation attenuator 19, under normal use state (bridge operation stage or during low intensity earthquake), subtract seismic isolation body 1 and be in elasticity operating condition and can freely release temperature power; when a high-intensity earthquake occurs, and when the relative displacement of the upper structure and the lower structure of the bridge exceeds the normal operation, the seismic isolation and reduction main body 1 of the seismic isolation and reduction damper 19 enters a shaping energy consumption working state, so that the seismic energy is consumed, the structural period is prolonged, and the aim of reducing the seismic force is fulfilled. Compare metal damper in the past or subtract isolation device, the utility model provides a stable and higher damping ratio, and can realize damping force, horizontal displacement, plastic deformation, damping ratio isoparametric effective control by computational analysis and experiment, the earthquake effect is calculated to the accuracy to the realization subtracts isolation design and control to bridge substructure foundation.

The utility model discloses this subtract isolation damper 19 does not receive the restriction of subtracting isolation bearing 11 height, and energy dissipation shock attenuation all can be realized to arbitrary horizontal direction, realizes the bridge and subtracts isolation demand on arbitrary horizontal direction, in addition because this subtract isolation damper 19 adopts the horizontal direction to place, can not influence the space height between the roof beam body and the pier, makes this subtract isolation device have compact structure, the structure is succinct, the atress is clear and definite, job stabilization, be convenient for change etc. outstanding advantage.

The shock absorption and isolation main body 1 of the shock absorption and isolation damper 19 of the utility model adopts the production process of round steel bar high-temperature bending forming, which can reduce the material consumption and the processing amount to the utmost extent, is favorable for reducing the product cost and improving the product competitiveness; the shock absorption and isolation device of the utility model adopts the mode that a plurality of shock absorption and isolation dampers 19 are connected on the same shock absorption and isolation support 11 to realize parallel use, thereby effectively improving the damping ratio of shock absorption and isolation and meeting the design requirements of shock absorption and isolation of bridges under different seismic intensity conditions; the utility model discloses subtract shock isolation device adopts and subtracts the external form of isolation damper 19 and arranges in the bridge and subtract the left and right sides of isolation bearing 11, and when normal operation, bridge beam supports undertakes vertically downwards, subtracts isolation damper 19 not atress, and when the earthquake, subtracts isolation damper 19 and undertakes earthquake horizontal force, can effectively reduce whole plane size and the structure height that subtracts shock isolation device, is favorable to the maintenance and the change in later stage.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (10)

1. The utility model provides a subtract shock insulation attenuator which characterized in that, subtracts the shock insulation main part including the heliciform, subtract shock insulation main part surface for smooth cambered surface, subtract the shock insulation main part and be out of shape the energy consumption section for the district section more than two-thirds when the atress is out of shape, subtract the shock insulation main part and have two and be upper and lower interval formation open-ended tip, two connect biography power connecting portion on the tip respectively.

2. The seismic isolation damper according to claim 1, wherein the seismic isolation body is a spiral structure which rotates one turn and has a circular cross section.

3. The seismic isolation damper according to claim 2, wherein the seismic isolation body is made of seismic carbon steel LY 345Q.

4. The seismic isolation damper of claim 3, wherein the force transmission connection comprises a connection sleeve, and the connection sleeve is inserted into and fixed with the end of the seismic isolation body.

5. The seismic isolation damper according to claim 4, wherein the connecting sleeve is a cylindrical steel cylinder, and the outer diameter of the cross section of the connecting sleeve is 1.2-1.4 times the diameter of the cross section of the seismic isolation body.

6. The seismic isolation damper according to claim 4, wherein the length of the end of the seismic isolation body inserted into the connecting sleeve is 2.0-2.5 times the diameter of the cross section of the seismic isolation body.

7. The seismic isolation damper according to claim 4, wherein the side wall of the connecting sleeve is provided with a connecting seat, and the connecting sleeve and the connecting seat are integrally manufactured or connected.

8. The seismic isolation and reduction damper according to claim 7, wherein the connecting base comprises a plurality of rib plates connected with the side wall of the connecting sleeve, the other ends of the plurality of rib plates are connected with the inner surface of the bottom plate, the outer surface of the bottom plate is connected with a connecting plate, and the connecting plate is provided with a connecting hole.

9. An earthquake reduction and isolation device is characterized by comprising an earthquake reduction and isolation support, wherein the earthquake reduction and isolation support comprises an upper seat plate and a lower seat plate, at least one earthquake reduction and isolation damper as claimed in any one of claims 1 to 8 is connected between the outer edges of the upper seat plate and the lower seat plate, and two force transmission connecting parts of each earthquake reduction and isolation damper are respectively connected with the upper seat plate and the lower seat plate through connecting pieces.

10. The seismic isolation and reduction device according to claim 9, wherein the seismic isolation and reduction support is a spherical steel support or a pot rubber support.

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