Lateral torsional buckling of ultra-high-performance fibre-reinforced concrete girders
- Authors
- Lee, Keesei; Andrawes, Bassem; Lee, Jeonghwa; Kang, Young Jong
- Issue Date
- 8월-2020
- Publisher
- ICE PUBLISHING
- Keywords
- beams & girders; failure; structural analysis
- Citation
- MAGAZINE OF CONCRETE RESEARCH, v.72, no.16, pp.820 - 836
- Indexed
- SCIE
SCOPUS
- Journal Title
- MAGAZINE OF CONCRETE RESEARCH
- Volume
- 72
- Number
- 16
- Start Page
- 820
- End Page
- 836
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/53877
- DOI
- 10.1680/jmacr.18.00180
- ISSN
- 0024-9831
- Abstract
- Ultra-high-performance fibre-reinforced concrete (UHPFRC) is a relatively newly developed construction material that not only has high compressive strength (greater than 150 MPa), but also high tensile strength (10-20 MPa). The use of UHPFRC enables the design of slender structural members; hence, instability could become a major governing failure mode. However, the estimation of buckling strength for a concrete structure is not easy, owing to its material characteristics. In this paper, the lateral torsional bucking behaviour and strength of ultra-high-performance concrete I-beams are discussed. A methodology is introduced to obtain the effective moment of inertia of UHPFRC I-beams, considering tensile cracks. By using the effective moment of inertia, the linear elastic buckling strength can be calculated. In addition, the inelastic lateral torsional buckling behaviour is investigated through finite-element analysis. A generalised buckling strength curve with a slenderness parameter is discussed. As a result, the limitations for classification of compact and non-compact members are defined, and lateral torsional buckling strength equations are suggested for a simply supported UHPFRC I-girder subjected to centre point loading. Several experimental studies were also conducted, and the results are applied to verify the final results.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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