Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical damage localisation for building systems including dynamic soil-structure interaction
This study develops a vibration-based damage detection method for shear buildings embedded in soil by evaluating the cumulative changes on curvature of the frequency response of displacements between undamaged and damaged structures. The curvature is calculated through direct differentiation rather than finite difference approximation. The effectiveness of the proposed method is compared with two existing methods through numerical studies. The effects of the severity of damage, level of noise and soil rigidity on the localisation of the single and successive damage scenario are investigated. Observations show that the proposed method is able to correctly localise the structural damage with different severity levels under noise-free conditions and performs better than the existing methods under noise-polluted conditions. In addition, the proposed method behaves robustly in successful predictions when buildings are located at various sites with different soil rigidities. The soil rigidity is also observed to considerably influence the effectiveness of the damage localisation method due to dynamic soil-structure interaction. Therefore, the proposed method may be used to effectively predict the damage location for building structures and can be considered to have a great potential for health monitoring of the life-cycle performance of buildings.
Numerical damage localisation for building systems including dynamic soil-structure interaction
This study develops a vibration-based damage detection method for shear buildings embedded in soil by evaluating the cumulative changes on curvature of the frequency response of displacements between undamaged and damaged structures. The curvature is calculated through direct differentiation rather than finite difference approximation. The effectiveness of the proposed method is compared with two existing methods through numerical studies. The effects of the severity of damage, level of noise and soil rigidity on the localisation of the single and successive damage scenario are investigated. Observations show that the proposed method is able to correctly localise the structural damage with different severity levels under noise-free conditions and performs better than the existing methods under noise-polluted conditions. In addition, the proposed method behaves robustly in successful predictions when buildings are located at various sites with different soil rigidities. The soil rigidity is also observed to considerably influence the effectiveness of the damage localisation method due to dynamic soil-structure interaction. Therefore, the proposed method may be used to effectively predict the damage location for building structures and can be considered to have a great potential for health monitoring of the life-cycle performance of buildings.
Numerical damage localisation for building systems including dynamic soil-structure interaction
Chen, Shi-Shuenn (Autor:in) / Shi, Jun-Yang (Autor:in) / Wu, Yi-Ying (Autor:in)
Structure and Infrastructure Engineering ; 15 ; 362-375
04.03.2019
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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