He, L., Gilbert, M. orcid.org/0000-0003-4633-2839 and Shepherd, M. (2017) Automatic yield-line analysis of practical slab configurations via discontinuity layout optimization. Journal of Structural Engineering, 143 (7). 04017036. ISSN 0733-9445
Abstract
The yield-line method provides a powerful means of rapidly estimating the ultimate load that can be carried by a reinforced concrete slab. The method can reveal hidden reserves of strength in existing slabs and can lead to highly economic slabs when used in design. Originally conceived before the widespread availability of computers, the yield-line method subsequently proved difficult to computerize, limiting its appeal in recent years. However, it was recently demonstrated that the discontinuity layout optimization (DLO) procedure could be used to systematically automate the method, and various isotropically reinforced, uniformly loaded slab examples were used to demonstrate this. The main purpose of this paper is to demonstrate that the DLO procedure can also be applied to a wide range of more practical slab problems, for example involving orthotropic reinforcement, internal columns, and point, line, and patch loads. The efficacy of the procedure is demonstrated via application to a variety of example problems from the literature; for all problems considered solutions are presented that improve upon existing numerical solutions. Furthermore, in a number of cases, solutions derived using previously proposed automated yield-line analysis procedures are shown to be highly nonconservative.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © American Society of Civil Engineers 2016. This work is made available under the terms of the Creative Commons Attribution 4.0 International license, http://creativecommons.org/licenses/by/4.0/. |
Keywords: | Yield-line analysis; plastic analysis; discontinuity layout optimization; slabs; rationalization |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Dec 2016 15:52 |
Last Modified: | 27 Jun 2017 10:57 |
Published Version: | https://doi.org/10.1061/(ASCE)ST.1943-541X.0001700 |
Status: | Published |
Publisher: | American Society of Civil Engineers |
Refereed: | Yes |
Identification Number: | 10.1061/(ASCE)ST.1943-541X.0001700 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:108951 |