Assessing the Structural Behavior of a New UHPC-Infilled Top Chords Integrated Deck Plate System at Construction Stage

Hong-Jun Son, Young-Ho Kim, Sung-Gul Hong and Dae-Jin Kim ()
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Hong-Jun Son: Department of Architectural Engineering, Kyung Hee University, Yongin 17104, Korea
Young-Ho Kim: Department of Architectural Engineering, Mokpo National University, Cheonggye-myeon 58554, Korea
Sung-Gul Hong: Department of Architecture and Architectural Engineering, Seoul National University, Seoul 08826, Korea
Dae-Jin Kim: Department of Architectural Engineering, Kyung Hee University, Yongin 17104, Korea

Sustainability, 2022, vol. 14, issue 19, 1-26

Abstract: In this paper, a new deck plate system, in which the top chords are infilled with high-performance cement-based material such as high-strength mortar and UHPC (ultra-high performance concrete), was proposed. The bending capacity of the proposed deck plate system at the construction stage was investigated by performing a four-point bending test on seven specimens with a net span of 4.6 m. Test parameters included the type of top chords, type and amount of infilled material, and existence of inner shear connectors. The load versus displacement curves were plotted for all the specimens, and their failure modes were identified. In addition, a theoretical strength estimation process was developed for the proposed deck plate system. The strength values calculated by the estimation process were compared with the test results and analyzed. This comparison showed that the proposed system retained the peak strength and initial stiffness at a much higher level than the conventional system, and the theoretical strength estimation process can predict the failure modes and peak strength of the proposed system accurately.

Keywords: deck plate system; structural behavior; UHPC-infilled top chord; compressive strength; construction stage (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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