Proceedings of the International Conference on Applied Sciences and Engineering (ICASE 2023)

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Ultimate moment capacity of 50m ultra-high performance fiber reinforced concrete composite box girder

Authors
Tsas-Orgilmaa Makhbal1, *, Sang Mook Han2
1School of Civil Engineering and Architecture of Mongolian, University of Science and Technology, Ulaanbaatar, Mongolia
2Civil Engineering Department of Kumoh, National Institute of Technology, Gumi, South Korea
*Corresponding author. Email: tsasorgilmaa@must.edu.mn
Corresponding Author
Tsas-Orgilmaa Makhbal
Available Online 31 December 2023.
DOI
10.2991/978-94-6463-330-6_23How to use a DOI?
Keywords
flexural behavior; bridge; girder; stress block; prestress loss
Abstract

The objective of this study described in this paper is to grasp the ultimate moment capacity of 50 m prestressed ultra-high-performance fiber-reinforced concrete (UHPFRC) composite box girder. The uniqueness of the prestressed UHPFRC composite box girder is no longitudinal reinforcement and no stirrups in two webs and lower flanges. In order to predict the flexural behavior of large-scale UHPFRC composite box girders, the current knowledge of UHPFRC properties and modelling tools is to be developed. The UHPFRC composite box girder consists of three segments UHPFRC U-shaped girder, UHPFRC deck plate, reinforced high-strength concrete (HSC) slab. The steel fiber 1.5% of volume fraction was added to ultra-high-performance concrete (UHPC) to induce ductile behavior in the girder. In total, 146 tendons are installed in the upper and lower flanges of U-shaped girder to cause flexural strength. A simple assumption of composite box girder was considered for a U-shaped girder, UHPFRC deck plate, HSC slab. Equivalent rectangular stress blocks are derived based on compressive and tensile constitutive laws of UHPFRC and HSC. The instantaneous prestress loss was calculated by the analytical method. The ultimate moment capacity of the composite box girder is evaluated with a modified analytical model, which has strain-softening behavior in tension. The result of ultimate moment capacity shows high flexural stiffness.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Conference on Applied Sciences and Engineering (ICASE 2023)
Series
Atlantis Highlights in Engineering
Publication Date
31 December 2023
ISBN
10.2991/978-94-6463-330-6_23
ISSN
2589-4943
DOI
10.2991/978-94-6463-330-6_23How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Tsas-Orgilmaa Makhbal
AU  - Sang Mook Han
PY  - 2023
DA  - 2023/12/31
TI  - Ultimate moment capacity of 50m ultra-high performance fiber reinforced concrete composite box girder
BT  - Proceedings of the International Conference on Applied Sciences and Engineering (ICASE 2023)
PB  - Atlantis Press
SP  - 184
EP  - 192
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-330-6_23
DO  - 10.2991/978-94-6463-330-6_23
ID  - Makhbal2023
ER  -