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Improvement in Long-term Behavior Estimation of Prestressed Composite Girders for Various Construction Sequences using Parametric Study

변수해석을 통한 프리스트레스트 합성거더의 시공단계별 장기거동 평가법 개선방안

  • Bae, Doobyong (School of Civil and Environmental Engineering, Kookmin University) ;
  • Oh, Chang Kook (School of Civil and Environmental Engineering, Kookmin University)
  • 배두병 (국민대학교, 건설시스템공학부) ;
  • 오창국 (국민대학교, 건설시스템공학부)
  • Received : 2012.12.14
  • Accepted : 2013.07.24
  • Published : 2013.08.27

Abstract

The age-adjusted effective modulus method has been known to provide more precise assessment than the traditional Yassumi method for long-term behavior estimation of prestressed composite girders. The age-adjusted effective modulus method, however, involves complicated calculation, thereby making the Yassumi method more prevalent in actual design. This study presents rational approaches to revise creep coefficients for the Yassumi method by using parametric study results obtained from the age-adjusted effective modulus method.

Keywords

age-adjusted effective modulus method;prestressed composite girders;long-term behavior;creep;shrinkage

Acknowledgement

Supported by : 한국건설교통기술평가원

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