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Overstrength and ductility of limited ductile RC walls: from the design engineers perspective

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conference contribution
posted on 2024-07-11, 08:00 authored by Scott MenegonScott Menegon, Hing Ho TsangHing Ho Tsang, John WilsonJohn Wilson, N. Lam
Force-based seismic analysis of a structure requires knowledge of its overstrength and displacement ductility. Local earthquake standards provide typical values for both of these parameters for common types of construction in that region. This paper presents the findings of a recent study to determine the overstrength and displacement ductility of limited ductile reinforced concrete (RC) walls in Australia using the static non-linear pushover analysis method introduced in the latest version of the Australian earthquake code. This activity was performed from the ‘perspective of a design engineer’, i.e. by using simple analysis methods presented in well-known texts without having to rely on the use of specialised finite element packages, while following and complying with the Australian earthquake loading and material standards. For this purpose a mean stress-strain curve of Australian and New Zealand reinforcement was determined by analysing test data from an independent industry materials testing laboratory. A proposed model for the actual stress-strain curve of 500 MPa L, N and E grade reinforcement is presented in this paper. The long term mean in-situ strength of concrete is also discussed and recommendations put forward.

Funding

Collapse assessment of reinforced concrete buildings in regions of lower seismicity

Australian Research Council

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Journal title

Building an Earthquake-Resilient Pacific, 10th Pacific Conference on Earthquake Engineering (10PCEE2015), Sydney, New South Wales, Australia, 06-08 November, 2015

Conference name

10th Pacific Conference on Earthquake Engineering (10PCEE2015)

Location

Sydney, New South Wales

Start date

2015-11-06

End date

2015-11-08

Publisher

Australian Earthquake Engineering Society

Copyright statement

Copyright © 2015. This work is reproduced in good faith. Every reasonable effort has been made to trace the copyright owner. For more information please contact researchbank@swin.edu.au.

Language

eng

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