Comparative study of damage detection in symmetric and asymmetric buildings
Paper
Paper/Presentation Title | Comparative study of damage detection in symmetric and asymmetric buildings |
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Presentation Type | Paper |
Authors | Wang, Y. (Author), Thambiratnam, D. P. (Author), Chan, T. H. T. (Author) and Nguyen, A. (Author) |
Editors | Motavalli, Masoud, Ilki, Alper, Havranek, Bernadette and Inci, Pinar |
Journal or Proceedings Title | Proceedings of the 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures (SMAR 2017) |
Number of Pages | 8 |
Year | 2017 |
Place of Publication | Zurich, Switzerland |
Web Address (URL) of Paper | https://www.smar-conferences.org/proceedings |
Conference/Event | 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures (SMAR 2017) |
Event Details | 4th Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures (SMAR 2017) Event Date 13 to end of 15 Sep 2017 Event Location Zurich, Switzerland |
Abstract | Aesthetics and functionality requirements have made most buildings asymmetric in recent times. Such buildings exhibit complex vibration under dynamic loads as there is coupling between the lateral and torsional components of vibration, and are referred to as torsionally coupled buildings. These building require three dimensional modelling and analysis. In spite of much recent research and some successful applications of damage detection and assessment methods to civil structures in recent years, the applications to asymmetric buildings remains a challenging task for civil engineers. Less investigation has been made on the methodologies for detecting and locating damage specific to torsionally coupled asymmetric buildings. This paper aims to investigate and compare the difference in vibration behavior between symmetric and asymmetric buildings and the use of vibration characteristics for predicting damage in them. The need for developing a special method to detect damage in asymmetric buildings becomes evident. Towards this end, the paper presents a technique based on a modified version of the traditional modal strain energy method. The modified approach is developed from Stubbs’ modal strain energy damage index by decomposing the mode shape into lateral and vertical components. The procedure is illustrated through numerical studies conducted on a three dimensional five-story symmetric and asymmetric frame structure with the same layout. Vibration parameters obtained from finite element analysis of the intact and damaged building models are then applied into the proposed algorithms for detecting and locating the damage in these buildings. |
Keywords | structural deterioration; structural health monitoring; asymmetric buidlings |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Queensland University of Technology |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q54y6/comparative-study-of-damage-detection-in-symmetric-and-asymmetric-buildings
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