Share Email Print
cover

Proceedings Paper

Operational modal analysis of a steel-frame, low-rise building with L-shaped construction
Author(s): Rodrigo Sarlo; Pablo A. Tarazaga; Mary E. Kasarda
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The Goodwin Hall Smart Infrastructure facility at Virginia Tech is a five-story “smart building" with an integrated network of 213 wired accelerometers. We utilize a subset of 68 sensors to perform high-resolution Operational Modal Analysis (OMA) of the structure under windy conditions. The low-rise, L-shaped construction and high mass, high stiffness properties of Goodwin Hall provide a unique case study in comparison to typical cases of building OMA in literature, which generally feature high-rise buildings with rectangular architectures. Our work focuses on data acquisition and feature extraction, which are two critical steps within a complete structural health monitoring approach. Our detailed methodology establishes guidelines for sensor selection and data processing applicable to this and more general cases. Modal parameters extraction using Stochastic Subspace Identification shows the first four natural frequencies, damping values, participation factors and mode shapes of the building. We hypothesize that high damping values and large differences in the participation of fundamental modes are related to the nature of the wind excitation.

Paper Details

Date Published: 12 April 2017
PDF: 13 pages
Proc. SPIE 10168, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017, 101682H (12 April 2017); doi: 10.1117/12.2260340
Show Author Affiliations
Rodrigo Sarlo, Virginia Polytechnic Institute and State Univ. (United States)
Pablo A. Tarazaga, Virginia Polytechnic Institute and State Univ. (United States)
Mary E. Kasarda, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 10168:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2017
Jerome P. Lynch, Editor(s)

© SPIE. Terms of Use
Back to Top