A Procedure for Post-Earthquake Damage Estimation Based on Detection of High-Frequency Transients

International Journal of Information Technology

Aleksandar Zhelyazkov ; Daniele Zonta ; Helmut Wenzel ; Peter Furtner

关键词: Acoustic emission;    Damage detection;    Shaking table test;    Structural health monitoring;    High-frequency transients.;   

DOI  :  10.1999/1307-6892/10009832

学科分类：计算机应用

来源: World Academy of Science, Engineering and Technology (W A S E T)

【 摘 要 】

In the current research structural health monitoring is considered for addressing the critical issue of post-earthquake damage detection. A non-standard approach for damage detection via acoustic emission is presented - acoustic emissions are monitored in the low frequency range (up to 120 Hz). Such emissions are termed high-frequency transients. Further a damage indicator defined as the Time-Ratio Damage Indicator is introduced. The indicator relies on time-instance measurements of damage initiation and deformation peaks. Based on the time-instance measurements a procedure for estimation of the maximum drift ratio is proposed. Monitoring data is used from a shaking-table test of a full-scale reinforced concrete bridge pier. Damage of the experimental column is successfully detected and the proposed damage indicator is calculated.

【 授权许可】

Unknown