Impact Tests of Model RC Columns by an Equivalent Truck Frame
Publication: Journal of Structural Engineering
Volume 142, Issue 5
Abstract
An equivalent frame is developed to simulate the effect of a large-size truck colliding with a reinforced-concrete column. The surrogate frame is made of simple steel elements and blocks, representing the major features of a reference truck. Equivalence between the frame and actual truck is achieved by comparing their deformation versus internal energy relationships. The equivalent truck frame is scaled down and used in laboratory tests to study the collision process between trucks and bridge piers, thereby significantly reducing the difficulty and cost of conducting full-scale collision tests while maintaining high fidelity. Using the scaled surrogate frames, three drop-weight impact tests are conducted on circular reinforced-concrete model columns. Test results show that the structural responses of the columns are not only influenced by the impact energy itself but also the impact speed and impactor mass. Finite-element simulations of the collision process are conducted using both the equivalent truck frame and the reference truck, confirming the overall similarity between them.
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Acknowledgments
The research described in this paper was carried out at the Center of Integrated Protection Research of Engineering Structures (CIPRES) of the China Ministry of Education Key Laboratory of Building Safety and Energy Efficiency, under the supports of the National Key Basic Research Program of China (973-2012CB026200) and the National Natural Science Foundation of China projects (51178174 and 51438010). The first author is sponsored by the China Scholarship Council and second and third authors by the One-thousand Talent National Expert program.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 142 • Issue 5 • May 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Feb 20, 2015
Accepted: Sep 30, 2015
Published online: Jan 6, 2016
Published in print: May 1, 2016
Discussion open until: Jun 6, 2016
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