CN112627020A - Seismic isolation damper, seismic isolation device and mounting method thereof - Google Patents
Seismic isolation damper, seismic isolation device and mounting method thereof Download PDFInfo
- Publication number
- CN112627020A CN112627020A CN202011634427.9A CN202011634427A CN112627020A CN 112627020 A CN112627020 A CN 112627020A CN 202011634427 A CN202011634427 A CN 202011634427A CN 112627020 A CN112627020 A CN 112627020A
- Authority
- CN
- China
- Prior art keywords
- seismic isolation
- reduction
- isolation
- seat plate
- damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/047—Pot bearings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/06—Wound springs with turns lying in cylindrical surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/123—Attachments or mountings characterised by the ends of the spring being specially adapted, e.g. to form an eye for engagement with a radial insert
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
Abstract
The invention discloses a seismic isolation and reduction damper, a seismic isolation and reduction device and an installation method thereof, wherein the seismic isolation and reduction damper comprises a spiral seismic isolation and reduction main body which rotates for one circle, the surface of the spiral seismic isolation and reduction main body is a smooth cambered surface, more than two thirds of sections of the seismic isolation and reduction main body are deformation energy consumption sections when the seismic isolation and reduction main body is deformed under stress, the seismic isolation and reduction main body is provided with two end parts which are spaced up and down, and the two end parts are respectively connected with a force transmission connecting; 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 invention has simple structure and convenient replacement, is not limited by the height of the support, can realize energy dissipation and shock absorption in any horizontal direction, can effectively prolong the structure period, provides stable and higher damping ratio, and can realize effective control on parameters such as damping force, horizontal displacement, plastic deformation, damping ratio and the like by calculation analysis and test.
Description
Technical Field
The invention relates to the technical field of bridge seismic isolation and reduction, in particular to a seismic isolation and reduction damper, a seismic isolation and reduction device and an installation method thereof.
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, which has a simple structure, is convenient to replace, is not limited by the height of a support, can realize energy consumption and shock absorption in any horizontal direction, provides a stable and higher damping ratio, and can realize effective control on parameters such as damping force, horizontal displacement, plastic deformation, damping ratio and the like through calculation analysis and tests becomes the subject of intense research of the inventor.
Disclosure of Invention
The invention aims to provide an earthquake reduction and isolation damper, an earthquake reduction and isolation device and an installation method thereof, which have the advantages of simple structure, convenience in replacement, no limitation of the height of a support, capability of realizing energy dissipation and shock absorption in any horizontal direction, capability of effectively prolonging the structural period, capability of providing a stable and higher damping ratio, and capability of realizing effective control of parameters such as damping force, horizontal displacement, plastic deformation, damping ratio and the like through calculation analysis and tests.
In order to achieve the purpose, the invention provides a seismic isolation and reduction damper which comprises a spiral seismic isolation and reduction main body, wherein the surface of the seismic isolation and reduction main body is a smooth cambered surface, more than two thirds of sections are deformation energy consumption sections when the seismic isolation and reduction main body is deformed under stress, the seismic isolation and reduction main body is provided with two end parts which are formed into openings at intervals up and down, and the two end parts are respectively connected with a force transmission connecting part.
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.
A method for installing a seismic isolation and reduction device comprises the following steps:
(1) manufacturing the seismic isolation damper: processing and manufacturing at least one spiral seismic isolation and reduction main body, and enabling two end parts of each seismic isolation and reduction main body to be arranged at intervals up and down to form an opening;
(2) manufacturing a force transmission connecting part: manufacturing at least one pair of steel cylindrical connecting sleeves, and processing a connecting seat on the side wall of each connecting sleeve in an integrated processing mode or connecting the connecting seats in a welding mode to form at least one pair of force transmission connecting parts;
(3) installing a force transmission connecting part: respectively inserting the connecting sleeves of at least one pair of force transmission connecting parts in the step (2) into the two end parts of each seismic isolation and reduction main body in the step (1), and connecting and fixing each end part and the corresponding connecting sleeve in a welding mode;
(4) assembling the seismic isolation and reduction device: and (4) moving the seismic isolation and reduction dampers which are respectively provided with the two force transmission connecting parts in the step (3) to the seismic isolation and reduction support seats which are used in a matched mode for positioning, and connecting the two force transmission connecting parts on each seismic isolation and reduction main body with the outer edges of the upper seat plate and the lower seat plate of the seismic isolation and reduction support seats respectively through connecting pieces.
After the scheme is adopted, the shock absorption and isolation damper, the shock absorption and isolation device and the installation method thereof have the following beneficial effects:
(1) the seismic isolation and reduction damper is simple in structural design and can be used as a seismic isolation and reduction device independently, the seismic isolation and reduction damper is fixedly connected with the bottom of a beam body and the top surface of a lower pier through two force transmission connecting parts respectively, so that seismic force in any direction is borne and reduced, the seismic isolation and reduction requirement of a bridge in any horizontal direction is met, or the seismic isolation and reduction damper is connected with a support to form the seismic isolation and reduction device, and the seismic isolation and reduction device is fixedly connected with the bottom of the beam body and the top surface of the lower pier;
(2) the shock absorption and isolation main body of the shock absorption and isolation damper adopts a production process of bending and forming a round steel bar at a 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) according to the seismic isolation and reduction device, a plurality of seismic isolation and reduction dampers are connected to the same seismic isolation support to realize parallel use, so that the damping ratio of seismic isolation and reduction is effectively improved, and the seismic isolation and reduction design requirements of bridges under different seismic intensity conditions are met;
(4) the vibration reduction and isolation damper of the vibration reduction and isolation device is arranged on the side surfaces of the bridge and the vibration reduction and isolation support in an externally hung mode, when the vibration reduction and isolation damper is in normal operation, the bridge support bears the vertical downward direction, the vibration reduction and isolation damper is not stressed, and when the earthquake occurs, the vibration reduction and isolation damper bears the horizontal force of the earthquake, so that the plane size and the structural height of the bridge support and the vibration reduction and isolation device can be effectively reduced, and later-stage maintenance and replacement are facilitated;
(5) when an earthquake occurs, the seismic isolation damper enters a plastic working state, and the earthquake action is reduced by prolonging the structural period and plastic energy consumption, so that a good seismic isolation effect is obtained;
(6) the invention can realize effective control of parameters such as damping force, horizontal displacement, plastic deformation, damping ratio and the like through calculation analysis and tests, and accurately calculate the earthquake action effect, thereby realizing the seismic isolation design and control of the bridge substructure foundation.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a seismic isolation damper according to the present invention;
FIG. 2 is a schematic view of a three-dimensional structure of a seismic isolation and reduction main body of the seismic isolation and reduction damper of the invention;
FIG. 3 is a front view of the force transmission connection part of the seismic isolation damper of the present invention;
FIG. 4 is a schematic top view of the force transmission connection part of the seismic isolation damper of 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 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 to the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications having the same meaning as and within the scope of the claims.
The invention relates to a seismic isolation and reduction damper, a seismic isolation and reduction device and an installation method thereof, which are specifically explained in the following by combining the attached drawings of the specification.
As shown in fig. 1, a schematic perspective view of an embodiment of the seismic isolation and reduction damper of the present invention includes a spiral seismic isolation and reduction main body 1, and as shown in fig. 2, the seismic isolation and reduction main body 1 of the embodiment is a spiral rod body which rotates once and has a circular cross section, the seismic isolation and reduction main body 1 has an equal cross section along an axial direction, and the seismic isolation and reduction main body 1 is circular in a 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 seismic isolation and reduction damper can be used independently, and can also be used together with a common spherical steel support or a pot-type rubber support. When the seismic isolation and reduction damper is used independently, the connecting sleeve 5 of the force transmission connecting part 4 is fixedly connected with the bottom surface of the upper beam body structure and the top surface of the lower pier through the connecting seat 6 and the high-strength bolt, and is fixedly connected with the beam bottom of the beam body and the top surface of the lower pier through the connecting plates 9 of the two force transmission connecting parts 4 and the high-strength bolt respectively, so that seismic force in any direction is borne and reduced, and seismic isolation and reduction requirements of a bridge in any horizontal direction are met.
As shown in fig. 5, the structural schematic diagram of the embodiment of the seismic isolation and reduction device of the invention includes a seismic isolation and reduction support 11, and the seismic isolation and reduction support 11 adopts a spherical steel support or a pot-type rubber support. In the embodiment, a spherical steel support is adopted, the seismic isolation and reduction support 11 comprises an upper seat plate 12 and a lower seat plate 13, a middle seat plate 14 with at least a spherical lower surface is arranged between the upper seat plate 12 and the lower seat plate 13, the middle seat plate 14 with the spherical lower surface is adopted in the embodiment, or the middle seat plate with the spherical upper and lower surfaces can be adopted, which are within the protection scope of the invention, a base 15 is arranged between the middle seat plate 14 and the lower seat plate 13, the upper surface of the base 15 is a spherical surface matched with the spherical lower surface of the middle seat plate 14, and the lower surface of the base 15 is a plane corresponding to the lower seat plate 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.
Referring to fig. 5, the method for installing the seismic isolation and reduction device of the present invention includes 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.
According to the seismic isolation and reduction device, an upper seat plate 12 and a lower seat plate 13 which are connected with a seismic isolation and reduction damper 19 are fixedly connected with the bottom of a beam body and the top surface of a lower pier through a plurality of high-strength bolts 20 to form a complete bridge seismic isolation and reduction system, the vertical force of the upper structure of the system is borne by a spherical steel support or a basin-shaped rubber support, the horizontal seismic force is borne by the seismic isolation and reduction damper 19, and in a normal use state (in a bridge operation stage or during low-intensity earthquake), the seismic isolation and reduction body 1 is in an elastic working state and can freely release temperature force; 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. Compared with the prior metal damper or seismic isolation device, the invention provides stable and higher damping ratio, and can realize effective control on parameters such as damping force, horizontal displacement, plastic deformation, damping ratio and the like through calculation analysis and test, and accurately calculate seismic action effect, thereby realizing seismic isolation design and control on the bridge lower structure foundation.
The seismic isolation and reduction damper 19 is not limited by the height of the seismic isolation and reduction support 11, energy dissipation and shock absorption can be realized in any horizontal direction, seismic isolation and reduction requirements of a bridge in any horizontal direction are realized, and in addition, the seismic isolation and reduction damper 19 is placed in the horizontal direction, so that the spatial height between a beam body and a pier cannot be influenced, and the seismic isolation and reduction device has the outstanding advantages of compact structure, simple structure, clear stress, stable work, convenience in replacement and the like.
The shock absorption and isolation main body 1 of the shock absorption and isolation damper 19 adopts a production process of bending and forming a round steel bar at a 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; according to the seismic isolation and reduction device, a plurality of seismic isolation and reduction dampers 19 are connected to the same seismic isolation and reduction support 11 to realize parallel use, so that the damping ratio of seismic isolation and reduction is effectively improved, and the design requirements of seismic isolation and reduction of bridges under different seismic intensity conditions are met; the seismic isolation and reduction device is arranged on the left side and the right side of the bridge and the seismic isolation support 11 in a mode of externally hanging the seismic isolation and reduction dampers 19, the bridge support bears vertical downward force during normal operation, the seismic isolation and reduction dampers 19 are not stressed, the seismic isolation and reduction dampers 19 bear horizontal seismic force during earthquake, the plane size and the structural height of the whole seismic isolation and reduction device can be effectively reduced, and later-stage maintenance and replacement are facilitated.
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 invention is limited only by the appended claims.
Claims (11)
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 high-quality carbon steel LY345Q for seismic resistance.
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.
11. The method for installing the seismic isolation and reduction device is characterized by comprising the following steps of:
(1) manufacturing the seismic isolation damper: processing and manufacturing at least one spiral seismic isolation and reduction main body, and enabling two end parts of each seismic isolation and reduction main body to be arranged at intervals up and down to form an opening;
(2) manufacturing a force transmission connecting part: manufacturing at least one pair of steel cylindrical connecting sleeves, and processing a connecting seat on the side wall of each connecting sleeve in an integrated processing mode or connecting the connecting seats in a welding mode to form at least one pair of force transmission connecting parts;
(3) installing a force transmission connecting part: respectively inserting the connecting sleeves of at least one pair of force transmission connecting parts in the step (2) into the two end parts of each seismic isolation and reduction main body in the step (1), and connecting and fixing each end part and the corresponding connecting sleeve in a welding mode;
(4) assembling the seismic isolation and reduction device: and (4) moving the seismic isolation and reduction dampers which are respectively provided with the two force transmission connecting parts in the step (3) to the seismic isolation and reduction support seats which are used in a matched mode for positioning, and connecting the two force transmission connecting parts on each seismic isolation and reduction main body with the outer edges of the upper seat plate and the lower seat plate of the seismic isolation and reduction support seats respectively through connecting pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634427.9A CN112627020A (en) | 2020-12-31 | 2020-12-31 | Seismic isolation damper, seismic isolation device and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634427.9A CN112627020A (en) | 2020-12-31 | 2020-12-31 | Seismic isolation damper, seismic isolation device and mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112627020A true CN112627020A (en) | 2021-04-09 |
Family
ID=75289898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011634427.9A Pending CN112627020A (en) | 2020-12-31 | 2020-12-31 | Seismic isolation damper, seismic isolation device and mounting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112627020A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960412A (en) * | 2022-03-23 | 2022-08-30 | 中国铁路设计集团有限公司 | Annular damper support, seismic isolation and reduction method and damping energy consumption method |
-
2020
- 2020-12-31 CN CN202011634427.9A patent/CN112627020A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960412A (en) * | 2022-03-23 | 2022-08-30 | 中国铁路设计集团有限公司 | Annular damper support, seismic isolation and reduction method and damping energy consumption method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107202738B (en) | Node fatigue test loading device and using method | |
| CN101974951B (en) | Wall type soft steel bending energy-consumption damper | |
| CN108331193B (en) | Square sleeve type self-resetting metal friction damper | |
| CN110983953B (en) | Transverse energy dissipation and shock absorption device suitable for bridge structure and installation method thereof | |
| CN112627020A (en) | Seismic isolation damper, seismic isolation device and mounting method thereof | |
| CN207905107U (en) | A kind of steel damper and assembling-type metal energy-dissipation beam column node | |
| CN214882916U (en) | Shock absorption and isolation damper and shock absorption and isolation device | |
| CN203546592U (en) | Damper with external bridge cable | |
| CN205443912U (en) | Steel damping antidetonation device | |
| CN103806568B (en) | Steel lead lamination porous power consumption plate | |
| CN211200786U (en) | Shock insulation support with normal damping characteristic and tensile function | |
| CN210421490U (en) | SMA-wood friction damper with self-resetting function | |
| CN110924550A (en) | Shock insulation support with normal damping characteristic and tensile function | |
| CN101413297A (en) | Large-tonnage vertical shock insulation damping device | |
| CN109027677B (en) | Shock insulation support for L NG storage tank and mounting method | |
| CN212561141U (en) | Shock absorption and isolation frame structure and shock absorption and isolation damper | |
| CN110952669A (en) | Assembled building with antidetonation function | |
| CN111979907A (en) | Seismic isolation and reduction frame structure, seismic isolation and reduction damper and mounting method thereof | |
| CN215858247U (en) | Three-dimensional shock insulation support for high-tech factory building | |
| CN205421587U (en) | Anti torsional damper of multidimension | |
| CN114197302A (en) | Metal damper for damping and energy consumption of bridge | |
| CN219099790U (en) | Annular shock-absorbing and isolating damper and shock-absorbing and isolating device | |
| CN210368591U (en) | Viscous damping device for counteracting bridge micro-amplitude vibration response | |
| CN103790252A (en) | Steel lead lamination shearing damper | |
| CN216740172U (en) | Self-centering cable support device with out-of-plane buckling metal damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |