Steel and Composite Structures

  • 제21권6호
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  • Pages.1307-1325
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical investigation of continuous composite girders strengthened with CFRP

  • Samaaneh, Mohammad A. (An-Najah National University) ;
  • Sharif, Alfarabi M. (Department of Civil & Environmental Engineering, King Fahd University of Petroleum and Minerals) ;
  • Baluch, Mohammed H. (Department of Civil & Environmental Engineering, King Fahd University of Petroleum and Minerals) ;
  • Azad, Abul K. (Department of Civil & Environmental Engineering, King Fahd University of Petroleum and Minerals)
  • 투고 : 2016.02.18
  • 심사 : 2016.08.14
  • 발행 : 2016.08.30
⟨ 이전 논문 다음 논문 ⟩

초록

Nonlinear behavior of two-span, continuous composite steel-concrete girders strengthened with Carbon Fiber Reinforced Polymers (CFRP) bonded to the top of concrete slab over the negative moment region was evaluated using a non-linear Finite Element (FE) model in this paper. A three-dimensional FE model of continuous composite girder using commercial software ABAQUS simulated and validated with experimental results. The interfacial regions of the composite girder components were modeled using suitable interface elements. Validation of the proposed numerical model with experimental data confirmed the applicability of this model to predict the loading history, strain level for the different components and concrete-steel relative slip. The FE model captured the different modes of failure for the continuous composite girder either in the concrete slab or at the interfacial region between CFRP sheet and concrete slab. Through a parametric study, the thickness of CFRP sheet and shear connection required to develop full capacity of the continuous composite girder at negative moment zone have been investigated. The FE results showed that the proper thickness of CFRP sheet at negative moment region is a function of the adhesive strength and the positive moment capacity of the composite section. The shear connection required at the negative moment zone depends on CFRP sheet's tensile stress level at ultimate load.

키워드

과제정보

연구 과제 주관 기관 : King Fahd University of Petroleum and Minerals

참고문헌

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  5. Use of UHPC slab for continuous composite steel-concrete girders vol.34, pp.3, 2016, https://doi.org/10.12989/scs.2020.34.3.321
  6. Experimental and analytical study on continuous GFRP-concrete decks with steel bars vol.76, pp.6, 2016, https://doi.org/10.12989/sem.2020.76.6.737