Computational Structural Engineering (전산구조공학)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
권호 표지

A Simplified Method for Creep Analysis of R/C Beams

철근콘크리트 보의 크리이프 단순 해석법

  • 곽효경 (한국과학기술원 토목공학과) ;
  • 서영재 (한국과학기술원 토목공학과)
  • Published : 1997.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper deals with the development of simplified methods to predict the creep deformation of reinforced concrete beams. The layer approach based on a degenerate kernel of compliance function in form of Dirichlet series is mentioned and a simplified analytical method derived from the equilibrium equations and compatibility conditions is proposed to overcome the sophisticated calculation procedures in the classical creep analysis. Correlation studies between analytical and experimental results and design codes are conducted with the objective to establish the validity of the proposed methods. Besides, various parameter studies are conducted with the objective to identify the effects of cracking, steel ratio and sectional shape in the creep deformation and the obtained results are discussed.

본 논문은 철근콘크리트 보의 시간의존적 거동인 크리이프 변형의 산정에 관한 것으로 크리이프 Compliance 함수의 1차 순환적 단계 알고리즘에 토대를 둔 적층단면법에 대하여 논의하였으며, 단면의 평형조건과 적합조건으로부터 구조물의 크리이프 변형을 쉽게 예측할 수 있는 간략 해석법을 제안하였다. 여러 실험치와 기존 해석방법 및 설계 규준과의 비교를 통해 제안된 해석모델의 효율성을 검증하였고, 적층단면법을 사용한 다양한 해석을 통해 단면의 형상, 철근비의 변화 및 균열의 유무에 따른 구조물의 시간의존적 거동에 비교 및 분석되었다.

Keywords

References

  1. 도로교 표준 시방서 건설부
  2. American Concrete Institute Building Code Requirements for Reinforced Concrete (ACI 318-89) ACI Committee 318
  3. State-of-Art Report on Finite Element Analysis of Reinforced Concrete ASCE
  4. British Standards Institution Structural Use of Concrete. Part 1. Code of Practice for Design and Construction BS 8110
  5. Numerical Modelling and Applications Concrete and Concrete structures Bangash, M.Y.H.
  6. Magazine of Concrete Research(Wexham Springs) v.34 no.121 Long-Term Deflections of Reinforced Concrete Beams Bakoss S. L.(et al.)
  7. Deformation of Cocnrete Structures Branson, Dan E.
  8. MSc thesis, University of the Witwaters-rand Long-Term Deflections of Reinforced Concrete Flexural Elements Clarke, G.S.
  9. ACI Materials Journal New Method to Predict the Creep Deflection of Cracked Reinforced Concrete Flexural Members Clarke, G.S.;H. Scholz;M. Alexander
  10. Proceedings v.63 no.3 Time-Dependent Defelctions of Reinforced Concrete Beams Corley, William G.;Sozen, Mete A.
  11. Time Effect in Concrete Structure Gilbert, R.I.
  12. Report No. UC-SEEM 77-1, UNIV. of California, Berkeley Nonlinear Geometric, Material and Time Dependent Analysis of Reinforced and Prestressed Concrete Frame Kang, Young-Jin
  13. Bulletin NO. 194 Die Berechnung der Durchbiegung von Stahlbeton-Bauteilen Mayer, Horst
  14. Creep of Plain and Structural Concrete Neville, A.M.;Dilger, W.H.;Brooks, J. J.
  15. Creep and Shrinkage of Concrete Elements and Structures Smerda, Z.;Kristek, V.
  16. ACI Journal v.49 no.2 Effect of Compressive Reinforcement on the Plastic Flow of Concrete Beams Washa, G. W.;Fluck, P.G.
  17. In. J. Mech. Sci. v.10 A Numerical Method of Viscoelastic Stress Analysis Zienkiewicz, O. C.;Watson, M.;King, I.P.