Variable-stiffness vibration isolator

A seismic isolation bearing and variable stiffness technology, applied in the field of bridge engineering and construction engineering, can solve the problems of endangering the safety of buildings, excessive deformation of the isolation bearing, unable to play the role of isolation and shock absorption, etc., to ensure safety. , The effect of reducing the impact of earthquake disasters

Inactive Publication Date: 2010-11-24
CHINA ACAD OF BUILDING RES +1
View PDF7 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the building uses a seismic isolation bearing with a large horizontal stiffness, when a small earthquake occurs, the external force on the isolation bearing is less than the minimum force that can deform, and the seismic isolation bearing does not deform and cannot play a role. Seismic isolation and shock absorption...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable-stiffness vibration isolator
  • Variable-stiffness vibration isolator
  • Variable-stiffness vibration isolator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 , figure 2 As shown, Embodiment 1 of the variable stiffness seismic isolation support of the present invention includes an upper connecting plate 3, a lower connecting plate 4, an inner support 1 arranged between the upper connecting plate 3 and the lower connecting plate 4 and The outer support 2 outside the inner support 1 has a gap between the inner support 1 and the outer support 2; the lower end of the inner support 1 and the lower end of the outer support 2 are both fixedly connected to the lower connecting plate 3; the inner support The upper end of the seat 1 is fixedly connected to the upper connecting plate 3; the upper end of the outer support 2 is slidably connected to the upper connecting plate 3 through a frictional sliding plate 7, wherein the frictional sliding plate 7 includes an upper sliding plate 71 and a lower sliding plate 72 which are attached up and down. The sliding plate 71 is fixedly connected to the upper connecting plate 3, a...

Embodiment 2-4

[0046] The embodiment 2-4 is a vibration isolation support with variable stiffness added with a damping device (lead core).

[0047] In order to increase the damping force of the variable stiffness seismic isolation support and enhance its energy dissipation capacity when encountering an earthquake, a lead core 8 is installed in the middle of the inner support 1 and / or the outer support 2 is nested with a cross section of Ring-shaped lead core 10. Such as Figure 5 with Image 6 The shown embodiment 2 of the variable stiffness shock-isolation support of the present invention, the difference between the second embodiment and the first embodiment is that the inner support 1 has a lead core 8 in the middle. Such as Figure 7 with Figure 8 The shown embodiment 3 of the variable stiffness seismic isolation support of the present invention is different from the embodiment 1 in that the outer support 2 is nested with a lead core 10 with a circular cross section. The lead core 8 can pr...

Embodiment 5-7

[0050] Examples 5-7 are vibration isolation supports with variable stiffness added with damping devices (tension rods).

[0051] In order to improve the tensile strength of the variable-rigidity shock-isolating support and protect it from being damaged when subjected to vertical tension, a tensile bar 9 can be installed in the middle of the inner support 1 and / or evenly around the periphery of the outer support 2 A plurality of anti-tension rods 9 are provided. Such as Picture 11 with Picture 12 The shown embodiment 5 of the variable stiffness seismic isolation support of the present invention, the difference between the embodiment 5 and the embodiment 1 is that there is a tension rod 9 in the middle of the inner support 1. Such as Figure 13 with Figure 14 The embodiment 6 of the variable stiffness shock isolation support of the present invention is shown. The difference between the embodiment 6 and the embodiment 1 is that four tensile rods 9 are evenly arranged around the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a variable-stiffness vibration isolator which comprises an upper connecting plate, a lower connecting plate, an inner supporting seat arranged between the upper connecting plate and the lower connecting plate and an outer supporting seat sleeved outside the inner supporting seat. A gap is formed between the inner supporting seat and the outer supporting seat, the lower end of the inner supporting seat and the lower end of the outer supporting seat are both fixedly connected with the lower connecting plate, the upper end of the inner supporting seat is fixedly connected with the upper connecting plate, the upper end of the outer supporting seat is glidingly connected with the upper connecting plate through a friction-type sliding plate which comprises an upper sliding plate and a lower sliding plate which are fit vertically, the upper sliding plate is fixedly connected with the upper connecting plate, and the lower sliding plate is fixedly connected with the upper end of the outer supporting seat. The variable-stiffness vibration isolator can provide small quakeproof capability and cushioning capability in case of a slight earthquake, provide strong quakeproof capability and cushioning capability in case of a serious earthquake to satisfy the quakeproof requirements of a mid-high building in different conditions, is applied to the building and bridge construction field and can effectively lighten the influence of earthquake disasters and protect the life and property security.

Description

Technical field [0001] The invention relates to the technical field of construction engineering and bridge engineering, in particular to a variable stiffness seismic isolation support used for construction engineering structures and bridge structures. Background technique [0002] In the design of building structure, the installation of seismic isolation and damping supports can effectively reduce earthquake disasters. [0003] According to the requirements of the national standard GB50011-2001 "Code for Seismic Design of Buildings", rubber shock isolation bearings are usually used as shock isolation devices. The existing seismic isolation support generally includes laminated rubber and upper and lower partitions arranged above and below the laminated rubber. The upper and lower partitions of the seismic isolation support are respectively connected to the building through upper and lower connecting plates. . [0004] The horizontal rigidity of the existing seismic isolation support...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E01D19/04E04B1/36E04B1/98
Inventor 薛彦涛高杰肖从真
Owner CHINA ACAD OF BUILDING RES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap