Reliability-Based Probabilistic Safety Evaluation of Seismic Design Approaches for RC–MR Buildings
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 7, Issue 2
Abstract
This study evaluates the seismic safety of reinforced concrete moment-resistant (RC–MR) buildings designed with two different methods, i.e., direct displacement based design (DDBD) and conventional force based design (FBD), through a reliability-based probabilistic approach. Two groups of buildings with irregular but symmetric configuration of frames and different heights are designed based on the aforementioned seismic design approaches. After validation of the model developed in OpenSees version 2.5.0 software, all buildings are subjected to incremental dynamic analysis. The results indicate that the irregularity of the configuration of the frames has challenged the seismic performance of the buildings designed with the DDBD approach, whereas changing the height does not significantly affect the seismic performance. Comparison of the two seismic design approaches shows that by changing the approach from DDBD to FBD, the structures behave in a highly vulnerable and unreliable way, exhibiting poor seismic performance. Finally, the evaluation of various probabilistic methods indicates that the use of both aleatory and epistemic uncertainties increases the mean annual frequency of exceedance, resulting in a more conservative level of damage.
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Data Availability Statement
Some data, models, or codes generated or used during the study are available from the corresponding author by request (i.e., OpenSees modeling files and generated outputs).
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Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 7 • Issue 2 • June 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jun 12, 2020
Accepted: Dec 14, 2020
Published online: Mar 9, 2021
Published in print: Jun 1, 2021
Discussion open until: Aug 9, 2021
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