Experimental and Analytical Assessment of Flexural Behavior of Cantilevered RC Walls Subjected to Impact Actions
Publication: Journal of Structural Engineering
Volume 146, Issue 4
Abstract
Reinforced concrete (RC) impact-resistance barriers, such as rockfall barriers, often consist of a cantilever RC wall, which is expected to experience flexural bending under impact loading to resist the associated design actions. In order to investigate the flexural response behavior of an RC cantilever wall, a large-scale experiment was carried out on a fixed base RC cantilevered barrier wall measured 1.5 m in height, 3 m in length, and 0.23 m in thickness. Two torpedo shaped steel impactors with a mass of 280 and 435 kg were released from controlled heights ranging from 0.2 to 1.4 m in pendulum style to strike the top of the wall. The first half of this paper presents an overview, findings, and results of this large-scale, original experimental work. The second half of the paper presents a displacement-based analytical model, which can be used to assess and determine important design parameters for cantilever RC barrier walls of this nature, including deflection demand and material strains. Systematic comparisons of the experimental results and the proposed analytical model demonstrate the accuracy and reliability of the proposed model for assessing cantilevered RC barrier walls subject to impact actions.
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Acknowledgments
This work was supported by the Australian Research Council (ARC) Discovery Project (DP) entitled New Approach for Design of Barriers for Impact (Grant No. DP170101858).
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Published In
Journal of Structural Engineering
Volume 146 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Mar 25, 2019
Accepted: Sep 10, 2019
Published online: Jan 31, 2020
Published in print: Apr 1, 2020
Discussion open until: Jun 30, 2020
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