Substandard reinforced concrete (RC) joints often exhibited poor seismic performance even under moderate intensity earthquakes, which is due to the lack of earthquake-resistant design detailing. Premature joint cracking often compromises the seismic performance of the entire building, initiating local collapses or global failure mechanisms. The quantification of the joint repairability in terms of reduction of the structural damage as well as expected economic losses is still a challenging task. This is due to the uncertainties in the assessment of residual and maximum crack widths. This study deals with th e evaluation of crack by the increasing drift level. To this end, available numerical and experimental cyclic data on the substandard beam- column joints are collected. The variability in material properties is considered and the corre- lation between residual and maximum crack width is obtained. These data are then used to obtain residual-to-maximum crack width ratio by increasing drift level. The available repaira- bility thresholds are then compared with the residual-to-maximum crack width ratio curve.
Damage evolution for repairability of substandard beam-column joints / Yurdakul, Ö.; Del Vecchio, C.; Di Ludovico, M.; Řoutil, L.; Avşar, Ö.. - 2021-June:(2021), pp. 120-130. (Intervento presentato al convegno 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering tenutosi a Athens (Greece) nel 28-30 June 2021) [10.7712/120121.8467.18768].
Damage evolution for repairability of substandard beam-column joints
Del Vecchio C.;Di Ludovico M.;
2021
Abstract
Substandard reinforced concrete (RC) joints often exhibited poor seismic performance even under moderate intensity earthquakes, which is due to the lack of earthquake-resistant design detailing. Premature joint cracking often compromises the seismic performance of the entire building, initiating local collapses or global failure mechanisms. The quantification of the joint repairability in terms of reduction of the structural damage as well as expected economic losses is still a challenging task. This is due to the uncertainties in the assessment of residual and maximum crack widths. This study deals with th e evaluation of crack by the increasing drift level. To this end, available numerical and experimental cyclic data on the substandard beam- column joints are collected. The variability in material properties is considered and the corre- lation between residual and maximum crack width is obtained. These data are then used to obtain residual-to-maximum crack width ratio by increasing drift level. The available repaira- bility thresholds are then compared with the residual-to-maximum crack width ratio curve.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.