고성능강재 HSB460 적용 강합성 I-거더 조밀단면의 변형-경화 효과를 고려한 부모멘트부 공칭휨강도Nominal negative flexural strength considering the effect of strain-hardening for compact composite I-sections using high-performance steels HSB460
- Other Titles
- Nominal negative flexural strength considering the effect of strain-hardening for compact composite I-sections using high-performance steels HSB460
- Authors
- 임지훈; 김정호; 최동호
- Issue Date
- Jun-2021
- Publisher
- 사단법인 한국교량및구조공학회
- Citation
- 2021년 한국강구조학회 학술대회 발표집, pp.23 - 24
- Indexed
- OTHER
- Journal Title
- 2021년 한국강구조학회 학술대회 발표집
- Start Page
- 23
- End Page
- 24
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/192315
- Abstract
- The objective of this study is to propose a new nominal flexural strength for a compact composite I-section usinga high-performance steel HSB460 subjected to a negative moment, considering the effect of strain-hardening of HSB460. In astress-strain curve of HSB460, the strain-hardening occurs immediately after yielding, unlike conventional steels. Thestrain-hardening stress probably affects the ultimate flexural strength of the compact composite I-section. However, thedesign equations for nominal flexural strengths presented in AASHTO LRFD Bridge Design Specification do not take into
account the strain-hardening effect. In this paper, by conducting extensive parametric study with a wide range of compositeI-sections, the strain-hardening effect is analyzed. Based on the parametric study results, new equations for a nominal flexural strength for the compact composite I-section using HSB460 under the negative moment were proposed.
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