Real-time structural health monitoring is a well established tool for post-earthquake damage estimation. A key component in the monitoring campaign is the approach used for processing the data from the structural health monitoring system. There is a large body of literature on signal processing approaches aimed at identifying ground-motion induced damage in civil engineering structures. This dissertation expands on a specific subgroup of processing approaches dealing with the identification of damage induced high-frequency transients in the monitoring data. The underlying intuition guiding the current research can be formulated in the following hypothesis - the time difference between the occurrence of a high-frequency transient and the closest deformation extremum forward in time is proportional to the degree of damage. A mathematical deduction is provided in support of the above hypothesis followed by a set of shaking table tests. For the purposes of this research two shaking table tests of reinforced concrete bridge piers were performed. Data from a shaking table test performed by another research group was also analyzed. The cases in which the proposed procedure could find a practical application are examined along with the present limitations.
Development of a Damage Indicator Based on Detection of High-Frequency Transients Monitored in Bridge Piers During Earthquake Ground Shaking / Zhelyazkov, Aleksandar. - (2020 Aug 05), pp. 1-109.
|Titolo:||Development of a Damage Indicator Based on Detection of High-Frequency Transients Monitored in Bridge Piers During Earthquake Ground Shaking|
|Anno di pubblicazione:||2020-08-05|
|Struttura:||Dipartimento di Ingegneria Civile Ambientale e Meccanica|
|Corso di dottorato:||Civil, Environmental and Mechanical Engineering|
|Tutor esterno:||Prof. Helmut Wenzel|
|Supervisori e coordinatori:||Bursi, Oreste Salvatore|
|Tesi in cotutela:||no|
|Settore Scientifico Disciplinare:||Settore ICAR/08 - Scienza delle Costruzioni|
|Digital Object Identifier (DOI):||10.15168/11572_272732|
|Appare nelle tipologie:||08.1 Tesi di dottorato (Doctoral Thesis)|