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An Evaluation of Flexural Performance of Composite Beam with Ultra High Performance Concrete Deck and Inverted T-Shaped Steel Girder
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 Title & Authors
An Evaluation of Flexural Performance of Composite Beam with Ultra High Performance Concrete Deck and Inverted T-Shaped Steel Girder
Yoo, Sung-Won; Joh, Chang-Bin; Choi, Kwang-Ho;
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 Abstract
In this paper, when the composite beam is made with UHPC deck and steel girder, the steel girder takes the form of the inverted-T shape without top flange because of high strength and stiffness of UHPC deck. There is no evaluation by experiment and analysis about the shear connector behavior on the web of steel girder and flexural behavior of inverted-T shape composite beam. By this reason, this study compares between experiment and analysis by using tension softening model of UHPC on the basis of flexural test results of 16 members considering compressive strength of UHPC, spacing of stud and thickness of deck as variables. The results of tensile strength of UHPC by inverse analysis were 6.57 MPa(in case of 120 MPa) and 9.57 MPa(in case of 150 MPa). In case of the test members with small stud spacing, the results of analysis and test were close clearly, and the test members with thick deck and low UHPC compressive strength also similar, but effects were small. As it compared between analysis and experiment totally, the results of analysis and experiment agree well. So the tension softening model of UHPC is reasonably reflected on the real behavior of composite beam of UHPC.
 Keywords
Composite beam;Inverted-T shape;Shear connector;Tension softening;UHPC;
 Language
Korean
 Cited by
 References
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Yoo, S.W., Yang, I., and Jung, S. (2015), Analysis of Flexural Behavior of Composite Beam with Steel Fiber Reinforced Ultra High Performance Concrete Deck and Inverted-T Shaped Steel with Tension Softening Behavior, Journal of Korea Concrete Institute, 27(2), 185-193 (in Korean). crossref(new window)