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Seismic defence structures

A technology of seismic wave and shielding device, used in seismology, seismic surveying, infrastructure engineering, etc.

Pending Publication Date: 2019-11-26
IMPERIAL INNOVATIONS LTD +3
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Seismic waves with frequencies within the stopband cannot pass through the shield

Method used

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other Embodiment approach

[0052] The posts in other embodiments may be in contact with the surface of the bedrock, or they may be embedded in the bedrock. Preferably, the columns are embedded in bedrock for more than 0.3m.

[0053] In general, the more the post is embedded in the bedrock, the more firmly the post will be fixed and the closer the lower frequency limit of the stop band will be to 0 Hz.

[0054] The material used for the studs may have a greater or lesser density, a higher or lower Young's modulus, a higher or lower bulk modulus, and / or a higher or lower shear modulus than the regolith quantity. The inconsistency between the properties of the regolith and the regolith widens the stop band, so the greater the difference between these properties of the regolith and the regolith, the greater the bandwidth of the stop band produced by the shield. Thus, when the pillars have a greater density than the regolith, the higher the density of the material used to form the pillars, the lower the fr...

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Abstract

A seismic wave shield for protecting an area from seismic vibrations and a method of shielding an area from seismic waves by installing a seismic wave shield. The seismic wave shield comprises a set of columns (1) embedded in regolith (3) and in contact with bedrock (4). There is a material contrast between a material forming the columns (1) and the regolith (3).

Description

technical field [0001] The present invention relates to earthquake protection structures and, in particular, to structures providing earthquake protection for buildings or groups of buildings. Background technique [0002] According to the U.S. Geological Survey, more than 3 million earthquakes occur around the world every year, most of which are below 3.9 on the Richter scale, but more than 900 are above 5.0 on the Richter scale. Even minor earthquake-induced shaking can have an impact on the structural integrity of buildings. Similarly, disturbing ground shaking from city train systems, subways, machines such as pile drivers, and roads often affects property values ​​or land use. Seismic waves are composed of surface waves (Rayleigh waves), pressure waves, and shear waves propagating through the ground. Surface waves cause most of any damage and propagate the fastest, however, body waves (pressure and shear waves) also cause damage, especially in the case of notched wave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/34E04H9/02G01V1/00E02D27/12
CPCE02D27/34E04H9/02G01V1/01E02D31/08
Inventor 特里丰·安托纳卡基斯理查德·克拉斯特尤尼斯·阿乔伊斯蒂芬·伊诺克塞巴斯蒂安·圭诺斯特凡·布鲁尔
Owner IMPERIAL INNOVATIONS LTD
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