CN114753243A

CN114753243A - Assembled spring subtracts isolation bearing

Info

Publication number: CN114753243A
Application number: CN202210581413.8A
Authority: CN
Inventors: 李子特; 樊江; 武维宏; 王根会; 胡炎文; 刘鸿博
Original assignee: Lanzhou Jiaotong University; Gansu Province Transportation Planning Survey and Design Institute Co Ltd
Current assignee: Lanzhou Jiaotong University; Gansu Province Transportation Planning Survey and Design Institute Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-07-15

Abstract

The invention relates to the field of supports in bridge and building engineering, in particular to a seismic isolation and reduction support based on a spring locking principle. The problem of current subtract that shock insulation support shock attenuation exists poor, the life-span is short is solved. Bedplate under the last bedplate that is fixed in the roof beam body and being fixed in the padstone, its characterized in that: the lower seat plate is evenly embedded with a plurality of elastic components and spring head combinations, and the tips of the spring heads are correspondingly embedded in a plurality of upper slotted holes of the upper seat plate in an initial state. This device is through setting up spring head and elastic component structure between last bedplate and lower bedplate, can be with vertical spring power consumption of horizontal seismic energy conversion for, reaches the purpose that warp damage-free, quality easily guarantee, shock insulation can the reinforce.

Description

Assembled spring subtracts isolation bearing

Technical Field

The invention relates to the field of supports in bridge and building engineering, in particular to an assembled spring seismic mitigation and isolation support.

Background

The seismic isolation and reduction technology can obviously reduce the damage of the earthquake to bridges and building engineering. The seismic isolation and reduction technology is a relatively economic, simple and advanced engineering measure, and an earthquake-proof means for protecting a main body structure from earthquake damage is realized by consuming seismic isolation and reduction components and devices with specific functions and buffering ground vibration.

The traditional seismic mitigation and isolation support takes the traditional seismic mitigation and isolation support as a main component for dissipating seismic energy. For example, a support taking a rubber material as a base body converts seismic energy input into the structure into strain energy and heat energy of the support through shearing deformation, so that the shock absorption and isolation function is realized, but the shock absorption effect is small, the shock isolation displacement is small, the support is greatly damaged, and the support needs to be replaced after strong shock; the steel support realizes energy consumption through supporting contact surface friction or inhaul cable strain, but the energy consumption ability is little, and the shock attenuation effect is not outstanding.

Disclosure of Invention

The invention provides an assembled spring seismic isolation and reduction support, which effectively solves the problem of shock absorption of the existing seismic isolation and reduction support.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides an assembled spring subtracts isolation bearing, is including the lower bedplate 2 that is fixed in the upper seat board 1 of the roof beam body and is fixed in the base stone, its characterized in that: the lower seat plate 2 is evenly embedded with a plurality of elastic components 4 and spring heads 3, and the tips of the spring heads 3 are correspondingly embedded in a plurality of upper slotted holes 102 of the upper seat plate 1 in an initial state.

The upper seat plate 1 is provided with a limiting plate 101, and the plurality of upper slotted holes 102 are all positioned on a panel of the upper seat plate 1 limited by the limiting plate 101.

The upper slot hole 102 is a hemispherical hole, the tip of the spring head 3 is hemispherical, and the diameter of the upper slot hole 102 is larger than that of the tip of the spring head 3.

The connection part of the edge of the upper slot 102 and the surface of the upper base plate 1 is in an arc structure.

The lower seat plate 2 is provided with a plurality of lower slotted holes 201, and the combination of the elastic component 4 and the spring head 3 is placed in the lower slotted holes 201.

The upper slots 102 on the upper seat plate 1 and the lower slots 201 on the lower seat plate 2 are arranged in a longitudinal and transverse array, and the longitudinal and transverse number of the upper slots 102 is greater than the longitudinal and transverse number of the lower slots 201.

The interval between the upper slots 102 is the same as the interval between the upper slots 201.

The elastic component 4 can be replaced by a strong magnet 8 with opposite magnetic poles which is arranged on the spring head 3 and the lower seat plate 2.

The tips of the upper seat plate 1, the lower seat plate 2 and the spring head 3 are coated with polytetrafluoroethylene plates 5.

The edges of the upper seat plate 1 and the lower seat plate 2 are hermetically connected through a corrugated dustproof cover 7.

The invention has the beneficial effects that: first, under the earthquake effect, the frictional force on the contact surface has been overcome to powerful structural inertia power, makes to take place the level between support upper bedplate and the lower bedplate to the displacement, and the spring head compresses elastic component to the level that makes input structure is still transferred for the ground in order to reach the purpose of power consumption shock attenuation again to the vertical elastic energy of seismic energy conversion for the spring.

Secondly, the horizontal displacement causes vibration displacement difference between the upper and lower part structures of the bridge or between the building structure and the foundation, thereby realizing certain shock insulation function.

Thirdly, under the action of continuous and repeated earthquakes, the effect of repeated shock absorption and isolation can be achieved.

Fourthly, this support can be disassembled and transported to the construction site for spare part, assembles the equipment at the scene, transportation and simple to operate.

Fifthly, the vertical bearing capacity is high, deformation is not damaged, seismic isolation and reduction capacity is strong, and reliability is good.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a sectional view of the main structure of the present invention;

FIG. 3 is an exploded view of the main structure of the present invention;

FIG. 4 is a schematic view of an upper seat plate structure;

FIG. 5 is a schematic view of a lower base plate mounting structure;

FIG. 6 is a cross-sectional view of the lower deck;

FIG. 7 is a schematic view of the compression of the resilient member during actuation;

FIG. 8 is a schematic view of the maximum displacement state during activity;

FIG. 9 is an exploded view of the mounting of a strong magnet;

shown in the figure: the anti-theft device comprises an upper seat plate 1, a limiting plate 101, an upper slotted hole 102, a lower seat plate 2, a lower slotted hole 201, a spring head 3, an elastic component 4, a polytetrafluoroethylene plate 5, a connecting bolt 6, a corrugated dustproof cover 7 and a strong magnet 8.

Detailed Description

The technical scheme of the invention is further explained by specific embodiments in the following with the accompanying drawings:

example 1

As shown in figures 1-8, the invention provides an assembled spring seismic mitigation and isolation support which comprises an upper seat plate 1, a limiting plate 101, an upper slotted hole 102, a lower seat plate 2, a lower slotted hole 201, a spring head 3, an elastic component 4, a polytetrafluoroethylene plate 5, a connecting bolt 6 and a corrugated dust cover 7.

As shown in FIG. 4, the upper seat plate 1 has a structure in which a bottom plate of the upper seat plate 1 is provided with vertically and horizontally linearly arrayed upper slots 102, and in order to ensure stability during shock absorption, an arc chamfer is formed between the edge of the upper slot 102 and the bottom plate. Meanwhile, the peripheries of the upper slotted holes 102 are defined by the limiting plates 102, and the limiting plates 101 are used for preventing the lower seat plate 2 from being separated from the upper seat plate 1 in the shock absorption process.

Meanwhile, in order to ensure the damping effect, the polytetrafluoroethylene plates 5 with the thickness of 3mm are coated on the bottom panel of the upper seat plate 1 and in the upper slotted holes 102. The polytetrafluoroethylene plate 5 can effectively reduce the friction coefficient when moving each other, and when improving the shock attenuation effect, can effectually prevent the wearing and tearing of bedplate 1, improve life.

As shown in FIGS. 4 and 5, the lower seat plate 2 is provided with a plurality of lower slots 201 having the same interval as the upper slots 102 on the lower seat plate 2. The purpose of the lower slot 201 is to mount the spring assembly 4, and after the lower end of the spring assembly 4 is fixed in the lower slot 201, the spring head 3 is disposed at the upper end of the spring assembly 4. In the natural state of the spring assembly, the tip of the spring head 3 is clamped in the upper slot 102.

Meanwhile, in order to ensure the damping effect, polytetrafluoroethylene plates 5 with the thickness of 3mm are coated on the upper panel of the lower seat plate 2 and the tips of the spring heads 3. The polytetrafluoroethylene plate 5 can effectual reduction coefficient of friction when removing each other, when improving the shock attenuation effect, can effectually prevent lower bedplate 2 and spring head 3's wearing and tearing, improve life.

Meanwhile, in order to ensure the damping effect and prevent the influence of the external environment on the equipment, the upper seat plate 1 and the lower seat plate 2 are connected and sealed into a whole body through the corrugated dust cover 9.

Under the action of earthquake, the inertia force of the structure can easily overcome the friction force on the contact surface, so that the upper seat plate 1 and the lower seat plate 2 are relatively displaced horizontally, the spring head 3 compresses the circular spring 4 to convert the earthquake energy into the elastic potential energy of the spring and then transmits the elastic potential energy to the foundation, and the purposes of energy dissipation and shock absorption are achieved; the upper seat plate 1 and the lower seat plate 2 generate relative horizontal displacement to form vibration displacement difference between upper and lower structures of a bridge or between a building structure and a foundation, so that a certain shock insulation function is realized; under the action of continuous and repeated earthquakes, the effects of repeated shock absorption and isolation can be synchronously realized; meanwhile, the support has the advantages of high vertical bearing capacity, no damage to deformation, strong seismic isolation and reduction capacity and good reliability.

The concrete construction steps are as follows:

disassemble this support and transport to the construction site for spare part after, directly structurally assemble and piece together, its main construction steps as follows:

a polytetrafluoroethylene plate 5 is laid on the bottom surface of the upper seat plate 1, the top surface of the lower seat plate 2 and the top surface of the spring head 3; connecting the lower base plate 2 provided with the lower slotted hole 201 with a support base or a foundation through a connecting bolt 6; the elastic component 4 is arranged in the lower slotted hole 201 of the lower seat plate 2; the spring head 3 is vertically arranged on the elastic component 4; the upper base plate 1 is installed after the upper slotted holes 102 correspond to the spring heads 3 one by one; the upper seat plate 1 is connected with a beam body or a building through a connecting bolt 6; the support is circumferentially closed by a corrugated dust cover 7.

As shown in FIG. 9, the invention provides an assembled spring seismic mitigation and isolation bearing, which comprises an upper seat plate 1, a limiting plate 101, an upper slotted hole 102, a lower seat plate 2, a lower slotted hole 201, a spring head 3, a strong magnet 8, a polytetrafluoroethylene plate 5, a connecting bolt 6 and a corrugated dust cover 7.

Compare with embodiment 1, embodiment 2 adopts the opposite strong magnet 8 replacement of magnetic pole with elastic component 4, during specific installation, the bottom surface is installed the opposite strong magnet 8 of a set of magnetic pole respectively under spring head 3 terminal surface and lower slotted hole 201, and its effect is the same with elastic component 4, and the advantage is: the service life is longer.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an assembled spring subtracts isolation bearing, is including the last bedplate that is fixed in the roof beam body and the bedplate down that is fixed in the stone, its characterized in that: the lower seat plate is evenly embedded with a plurality of elastic components and spring head combinations, and the tip ends of the spring heads are correspondingly embedded in a plurality of upper slotted holes of the upper seat plate in an initial state.

2. The assembled spring seismic mitigation and absorption support saddle according to claim 1, wherein: the upper seat plate is provided with a limiting plate, and the plurality of upper slotted holes are all positioned on an upper seat plate panel limited by the limiting plate.

3. The assembled spring seismic mitigation and absorption support saddle as claimed in claim, wherein: the upper slotted hole is a hemispherical hole, the tip of the spring head is hemispherical, and the diameter of the upper slotted hole is larger than that of the tip of the spring head.

4. The assembled spring seismic mitigation and absorption support saddle according to claim 3, wherein: the joint of the edge of the upper slotted hole and the surface of the upper base plate is of an arc structure.

5. The assembled spring seismic mitigation and absorption support saddle according to claim 1, wherein: the lower seat plate is provided with a plurality of lower slotted holes, and the combination of the elastic component and the spring head is placed in the lower slotted holes.

6. The assembled spring seismic mitigation and absorption support saddle according to claim 1, wherein: the upper slotted holes on the upper seat plate and the lower slotted holes on the lower seat plate are arranged in a longitudinal and transverse array mode, and the longitudinal and transverse quantity of the upper slotted holes is larger than the longitudinal and transverse quantity of the lower slotted holes.

7. The assembled spring seismic mitigation and absorption support saddle according to claim 6, wherein: the interval between the upper slotted holes is the same as that between the upper slotted holes.

8. The assembled spring seismic mitigation and absorption support saddle according to claim 1, wherein: the elastic component can be replaced by strong magnets with opposite magnetic poles arranged on the spring head and the lower seat plate.

9. The assembled spring seismic mitigation and absorption support saddle according to claim 1, wherein: the upper seat plate, the lower seat plate and the tip of the spring head are all coated with polytetrafluoroethylene plates.

10. The assembled spring seismic mitigation and absorption support saddle according to claim 1, wherein: the edges of the upper seat plate and the lower seat plate are hermetically connected through a corrugated dust cover.