Reliability-based study on ductility measures of reinforced concrete beams in ACI 318

Baji, Hassan and Ronagh, Hamid Reza (2016) Reliability-based study on ductility measures of reinforced concrete beams in ACI 318. ACI Structural Journal, 113 2: 373-382. doi:10.14359/51688201


Author Baji, Hassan
Ronagh, Hamid Reza
Title Reliability-based study on ductility measures of reinforced concrete beams in ACI 318
Journal name ACI Structural Journal   Check publisher's open access policy
ISSN 0889-3241
1944-7361
Publication date 2016-03-01
Year available 2016
Sub-type Article (original research)
DOI 10.14359/51688201
Open Access Status Not yet assessed
Volume 113
Issue 2
Start page 373
End page 382
Total pages 10
Place of publication Farmington Hills, MI, United States
Publisher American Concrete Institute
Collection year 2017
Language eng
Abstract This paper presents a reliability-based investigation into the ductility requirements of reinforced concrete beams designed based on the ACI Code. Results showed that the code-specified model for predicting ductility measures, such as the neutral axis depth, is considerably less reliable than it is for predicting the flexural strength. The ratio of the strain at tensile reinforcement to yield strain of steel was used to define a limit state to ensure adequate ductility in reinforced concrete beams. Due to variability in the material properties and model error, there is high variability in ductility measures, leading to a high probability of compressive failure. Based on a target probability of failure taken from the literature, it was found that modification of the current ductility requirements is desired. This research highlights the need for more reliability-based studies into the safety factors provided by the ACI Code for ensuring adequate ductility in reinforced concrete beams.
Keyword Beams
Ductility
Monte Carlo simulation
Reinforced concrete
Reliability
Safety factor
Strength
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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Created: Tue, 22 Mar 2016, 00:37:07 EST by System User on behalf of Learning and Research Services (UQ Library)