Structural Engineering and Mechanics

  • 제5권3호
  • /
  • Pages.307-327
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  • 1997
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

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Time dependent service load behaviour of prestressed composite tee beams

  • Uy, Brian (Department of Civil and Mining Engineering, University of Wollongong)
  • 발행 : 1997.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper is concerned with the time dependent service load behaviour of prestressed composite tee beams. The effects of creep and shrinkage of the concrete slab are modelled using the age adjusted effective modulus method and a relaxation approach. The tendon strain is determined considering compatibility of deformations and equilibrium of forces between the tendon and the composite tee beam. A parametric study is undertaken to study the influence of various aspects on the stress, strain and deformations of the concrete slab, steel beam and prestressing tendon. The effect of loading type and tendon relaxation has also been considered for various types of prestressing tendon materials. Recommendations are then made in relation to adequate span to depth ratios for varying levels of prestressing force.

키워드

참고문헌

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피인용 문헌

  1. Static Flexural Behaviour of Externally Post-Tensioned Steel-Concrete Composite Beams vol.7, pp.1, 2004, https://doi.org/10.1260/136943304322985729