Optically-based interstory drift meter system for rapid assessment of the earthquake response of building structures
Abstract
A sensor system provides measurement of building interstory drift based on a laser beam impinging on a discrete diode sensor array. The diode sensor array determines the location at which a projected laser bean strikes the array, which provides a direct measurement of interstory drift. The diode sensor array is a two dimensional array of discrete diodes that allow the location of an impinging laser beam to be very accurately tracked as the beam moves back-and-forth across the diode array. Local rotations of the laser source that result from rotations of structural members (e.g. floor beam rotation) are appropriately corrected for. This allows accurate, dynamic measurements of the interstory drift between two floor levels of a shaking building.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1493336
- Patent Number(s):
- 10168245
- Application Number:
- 15/509,757
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2016 Apr 27
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
McCallen, David B., Coates, Jason, Repanich, Nick, and Wattenburg, William Harvey. Optically-based interstory drift meter system for rapid assessment of the earthquake response of building structures. United States: N. p., 2019.
Web.
McCallen, David B., Coates, Jason, Repanich, Nick, & Wattenburg, William Harvey. Optically-based interstory drift meter system for rapid assessment of the earthquake response of building structures. United States.
McCallen, David B., Coates, Jason, Repanich, Nick, and Wattenburg, William Harvey. Tue .
"Optically-based interstory drift meter system for rapid assessment of the earthquake response of building structures". United States. https://www.osti.gov/servlets/purl/1493336.
@article{osti_1493336,
title = {Optically-based interstory drift meter system for rapid assessment of the earthquake response of building structures},
author = {McCallen, David B. and Coates, Jason and Repanich, Nick and Wattenburg, William Harvey},
abstractNote = {A sensor system provides measurement of building interstory drift based on a laser beam impinging on a discrete diode sensor array. The diode sensor array determines the location at which a projected laser bean strikes the array, which provides a direct measurement of interstory drift. The diode sensor array is a two dimensional array of discrete diodes that allow the location of an impinging laser beam to be very accurately tracked as the beam moves back-and-forth across the diode array. Local rotations of the laser source that result from rotations of structural members (e.g. floor beam rotation) are appropriately corrected for. This allows accurate, dynamic measurements of the interstory drift between two floor levels of a shaking building.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2019},
month = {Tue Jan 01 00:00:00 EST 2019}
}
Works referenced in this record:
Device for detecting objects on a glass door and elevator equipped therewith
patent, August 2009
- Copsey, Gary
- US Patent Document 7,575,101
Method for determining loads on a mechanical structure and the resultant damage
patent, September 2014
- Schreiber, Ulrich; Rasch, Andreas; Mander, John B.
- US Patent Document 8,830,477