Damage identification of non-dispersible underwater concrete columns under compression using impedance technique and stress-wave propagation
Journal of Civil Structural Health Monitoring(2024)
摘要
Current scouring effects and additives increase the risk of failure in underwater structures, and poor observation complicates the identification and assessment of damage. We present a novel index for assessing non-dispersible underwater concrete columns using stress-wave and impedance. A piezoelectric lead zirconate titanate sensor was used to monitor the compression process of non-dispersible underwater concrete columns and ascertain the extent of damage. The proposed index divides the damage process into initial compaction, elastic deformation, and crack development and failure stages. Additionally, the proposed method quantifies and identifies damage, producing results that agree with those for the axial compression failure characteristics.
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关键词
Non-dispersible underwater concrete column,Stress-wave,Impedance,Damage assessment
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