Reliability Based Evaluation of Low-rise Reinforced Concrete Moment Frames Designed for Different Levels of Ductility

Document Type : Research Article

Authors

1 department of civil engineering/faculty of engineering/Yazd university

2 Assistant Professor, Civil Engineering Department, Yazd University, Yazd, Iran

3 Civil Engineering Department, Yazd University

Abstract

This study aims to evaluate the low-rise reinforced concrete moment frames designed based on different levels of ductility in a typical reinforced concrete structure from a reliability perspective. This article investigates the probabilistic methods of designing different levels of ductility in the current Iranian Code of concrete in terms of reliability. In this study, a three-story concrete moment frame structure with various ductility levels of Iranian code, namely low, medium and special ductility, is considered. Regarding the uncertainties in loading and dimensional parameters of the frame and the properties of the probability space, the reliability analysis is performed on the structural performance functions, including drift and acceleration of floors. The horizontal component of earthquakes introduced by the FEMA P-695 standard are used in order to investigate the uncertainty of earthquake records. The uniformity of the failure is evaluated by comparing the reliability index and the probability of failure of each of the performance functions. The results show that the maximum probability of failure in collapse damage state is nearly 9, 5 and 2 percent for low, medium and special ductility frames respectively.

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Amirkabir Journal of Civil Engineering
Volume 56, Issue 2
May 2024
Pages 1-1

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