Development of Fully Prefabricated Steel-UHPC Composite Deck System
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Volume 145, Issue 7
Abstract
This paper proposes a novel fully prefabricated composite deck system to achieve green and accelerated construction in bridge engineering. Ultra-high-performance concrete (UHPC), which has excellent mechanical properties, was employed as the main material of the prefabricated deck. Special connecting configurations, that is, steel plates with studs or pretensioned rebar, were used for enhancing the crack resistance of the steel-UHPC interface and facilitating convenient on-site assembly. Two sets of specimens featuring passive and active crack resistance were tested for investigation of the behavior of the composite deck under negative moment. The tests showed that the fully prefabricated composite deck provided satisfactory crack resistance compared with a traditional cast-in-place construction composite deck. On the basis of physical testing, a numerical model was built with Abaqus for further parametric analysis. Several design parameters were evaluated through supplementary analyses and recommendations were made for rebar pretension force and beam stiffener height.
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Acknowledgments
This work was completed under the support of the Natural Science Foundation of China (Grant No. 51708466), Science and Technology Project of Sichuan Province (Grant No. 2019YFH0139), and Fundamental Research Funds for the Central Universities (Grant No. 2682017CX002). All the authors appreciate the contribution from Hefei Special Material Technology Limited Company.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 7 • July 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Feb 2, 2018
Accepted: Nov 16, 2018
Published online: Apr 25, 2019
Published in print: Jul 1, 2019
Discussion open until: Sep 25, 2019
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