Seismic metamaterial and method for blocking propagation of seismic lamb waves

A technology of metamaterials and cubes, applied in architecture, instruments, geometric CAD, etc.

Active Publication Date: 2021-06-01
NORTHWESTERN POLYTECHNICAL UNIV
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, most of the existing seismic metamaterials focus on shielding the surface waves and body waves of seismic waves. For Lamb waves generated in specific geological environments, they also carry seismic energy and destroy buildings, sometimes ...

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
  • Seismic metamaterial and method for blocking propagation of seismic lamb waves
  • Seismic metamaterial and method for blocking propagation of seismic lamb waves
  • Seismic metamaterial and method for blocking propagation of seismic lamb waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure.

[0031] In the drawings, the thicknesses of regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0032] The described features, structures, or characteristic...

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

PropertyMeasurementUnit
Elastic modulusaaaaaaaaaa
Mass densityaaaaaaaaaa
Login to view more

Abstract

The invention provides a seismic metamaterial and method for blocking propagation of seismic lamb waves, and belongs to the technical field of foundation seismic isolation. The seismic metamaterial comprises a plurality of metamaterial unit cells arranged periodically, each metamaterial unit cell comprises a steel block and a soil block, the periphery of each soil block is cubic, a containing cavity is formed in the center of the interior of each soil block, each steel block is located in the corresponding containing cavity, each containing cavity is matched with the corresponding steel block in peripheral shape, the contact surfaces of each steel block and the corresponding soil block are tightly attached, the elastic modulus of the material of the soil block is 0-90 MPa, and the mass density is 600-22,000 kg/m < 3 >. The metamaterial is simple in structure and capable of blocking seismic lamb waves and protecting buildings.

Description

technical field [0001] The present disclosure relates to the technical field of foundation isolation, and in particular to a seismic metamaterial and a method for isolating the propagation of seismic Lamb waves. Background technique [0002] Among natural disasters, earthquakes cause the most damage to buildings and can cause even greater damage to the environment, economy and society. Worldwide, millions of earthquakes occur each year with more than 1,000 earthquakes measuring 5.0 or above on the Richter scale. When an earthquake occurs, seismic waves propagate from the depth of the epicenter, carrying huge energy and launching in all directions, which can cause major damage to civil structures. [0003] The traditional anti-seismic design mainly focuses on the anti-seismic design of the structure itself. By increasing the cross-section of the structural members to ensure that the structure has sufficient strength, stiffness and ductility, the nonlinear state of the struct...

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): E02D31/08G06F30/13G06F30/23G06F119/14
CPCE02D31/08G06F30/13G06F30/23G06F2119/14
Inventor 张凯罗杰洪放赵鹏程赵诚邓子辰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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