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Alternative shear reinforcement for reinforced concrete flat slabs

Pilakoutas, K. and Li, X. (2003) Alternative shear reinforcement for reinforced concrete flat slabs. Journal of Structural Engineering, 129 (9). pp. 1164-1172. ISSN 0733-9445

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Abstract

This paper presents the first series of validation tests for a patented shear reinforcement system for reinforced concrete flat slabs. The system, called “Shearband,” consists of elongated thin steel strips punched with holes, which undulate into the slab from the top surface. The main advantages of the new reinforcement system are structural effectiveness, flexibility, simplicity, and speed of construction. Four reinforced concrete slabs were tested in a specially designed test rig. The slabs reinforced in shear exhibited ductile behavior after achieving their full flexural potential, thus proving the effectiveness of the new reinforcement. This paper reviews briefly existing types of shear reinforcement and identifies the need for more efficient and economic solutions. Details of the experimental setup and results are given, including strain and deflection measurements as well as photographs of sections through the slabs. Finally, comparisons are made with the ACI 318 and BS8110 code predictions, which confirm that the system enabled the slabs to avoid punching shear failure and achieve their flexural potential. In addition, both codes are shown to lead to conservative estimates of flexural and punching shear capacities of reinforced concrete slabs.

Item Type: Article
Copyright, Publisher and Additional Information: © 2003 ASCE. This is an author produced version of a paper subsequently published in Journal of Structural Engineering. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Concrete slabs, Concrete, reinforced, Validation, Shear resistance, Tests
Institution: The University of Sheffield
Academic Units: The University of Sheffield > University of Sheffield Research Centres and Institutes > Centre for Cement and Concrete (Sheffield)
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield)
Depositing User: Prof Kypros Pilakoutas
Date Deposited: 31 Jan 2011 10:30
Last Modified: 08 Feb 2013 17:30
Published Version: http://dx.doi.org/10.1061/(ASCE)0733-9445(2003)129...
Status: Published
Publisher: American Society of Civil Engineers
Refereed: Yes
Identification Number: 10.1061/(ASCE)0733-9445(2003)129:9(1164)
URI: http://eprints.whiterose.ac.uk/id/eprint/42824

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