A deformed shape monitoring model for building structures based on a 2D laser scanner

Se Woon Choi, Bub Ryur Kim, Hong Min Lee, Yousok Kim, Hyo Seon Park

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

High-rise buildings subjected to lateral loads such as wind and earthquake loads must be checked not to exceed the limits on the maximum lateral displacement or the maximum inter-story drift ratios. In this paper, a sensing model for deformed shapes of a building structure in motion is presented. The deformed shape sensing model based on a 2D scanner consists of five modules: (1) module for acquiring coordinate information of a point in a building; (2) module for coordinate transformation and data arrangement for generation of time history of the point; (3) module for smoothing by adjacent averaging technique; (4) module for generation of the displacement history for each story and deformed shape of a building, and (5) module for evaluation of the serviceability of a building. The feasibility of the sensing model based on a 2D laser scanner is tested through free vibration tests of a three-story steel frame structure with a relatively high slenderness ratio of 5.0. Free vibration responses measured from both laser displacement sensors and a 2D laser scanner are compared. In the experimentation, the deformed shapes were obtained from three different methods: the model based on the 2D laser scanner, the direct measurement based on laser displacement sensors, and the numerical method using acceleration data and the displacements from GPS. As a result, it is confirmed that the deformed shape measurement model based on a 2D laser scanner can be a promising alternative for high-rise buildings where installation of laser displacement sensors is impossible.

Original languageEnglish
Pages (from-to)6746-6758
Number of pages13
JournalSensors (Switzerland)
Volume13
Issue number5
DOIs
Publication statusPublished - 2013 May 1

Fingerprint

scanners
Lasers
modules
Monitoring
lasers
free vibration
Vibration
sensors
Sensors
histories
vibration tests
Earthquakes
coordinate transformations
Steel
experimentation
smoothing
installing
Global positioning system
aspect ratio
Loads (forces)

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

Choi, Se Woon ; Kim, Bub Ryur ; Lee, Hong Min ; Kim, Yousok ; Park, Hyo Seon. / A deformed shape monitoring model for building structures based on a 2D laser scanner. In: Sensors (Switzerland). 2013 ; Vol. 13, No. 5. pp. 6746-6758.
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A deformed shape monitoring model for building structures based on a 2D laser scanner. / Choi, Se Woon; Kim, Bub Ryur; Lee, Hong Min; Kim, Yousok; Park, Hyo Seon.

In: Sensors (Switzerland), Vol. 13, No. 5, 01.05.2013, p. 6746-6758.

Research output: Contribution to journalArticle

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