Evaluation of Performance-Based Deformation Limits for Reinforced Concrete Columns

Şenocak, Alperen
Reinforced concrete columns, as fundamental load-bearing elements in structures, play a crucial role in overall stability and safety of the buildings. A precise assessment of their performance, especially concerning deformation capacities, becomes essential in mitigating potential risks posed by seismic events. Performance-based design principles consider both the strength and displacement capacities of columns. The study of performance-based displacement limits for reinforced concrete columns necessitates a comprehensive understanding of factors impacting column deformation behavior. Current seismic codes contain deformation limits for each performance state. To assess the precision of these limits, 186 experimental column specimens extracted from the PEER database are used. After verifying the accuracy of OpenSees software by using 37 experimental column specimens from the PEER database and one portal frame experiment that was conducted at METU, 3072 columns are generated. Performance limits of the seismic guidelines are compared with experimental and analytical results. The effect of various parameters on the plastic rotation capacity and the capability of each seismic guideline to capture this effect are examined. It is found that the predictive safety of the seismic guidelines -TBEC (2018), ASCE/SEI 41-17, Eurocode 8-3- is affected from the axial load ratio and transverse reinforcement ratio. Safety of the guidelines is examined for each performance limit
Citation Formats
A. Şenocak, “Evaluation of Performance-Based Deformation Limits for Reinforced Concrete Columns,” M.S. - Master of Science, Middle East Technical University, 2023.