Nonlinear Finite Element Analysis of UHPFRC I-Beam on the Basis of an Elastic-Plastic Fracture Model

탄소성 파괴역학 모델에 근거한 초고강도 섬유보강 콘크리트 I 형보의 비선형 유한요소해석

  • 한상묵 (금오공과대학교 토목환경공학부) ;
  • 궈이홍 (금오공과대학교 토목환경공학부 토목공학과)
  • Received : 2009.01.28
  • Accepted : 2009.04.24
  • Published : 2009.06.30

Abstract

This paper deals with the three-dimensional finite element analysis of failure behavior of UHPFRC I-beam under monotonic load. Different from the constitutive law of normal and high strength concrete, an elastic-plastic fracture model that considers the tensile strain hardening is proposed to describe the material properties of UHPFRC. A multi-directional fixed crack criterion with tensile strain hardening is defined in the tensile region, and Drucker-Prager criterion with an associated flow rule is adopted in the compressive region. The influence of span, prestressing force and section on the behavior of UHPFRC I-beam are investigated. The comparison of the numerical results with the test results indicates a good agreement.

Acknowledgement

Supported by : Kumoh National Institute of Technology

References

  1. 주관연구기관, 협동연구기관 (2005) 초고성능 시멘트 복합재료를 활용한 교량 거더 개발
  2. Barros, J., Gettu, R. (2004) Material Nonlinear Analysis of Steel Fiber Reinforced Concrete Beams Failing In Shear, Proceedings of the Sixth International RILEM Symposium in Italy, Fiber Reinforced Concretes, pp.711-730
  3. Behloul, M. (2007) HPFRCC Field of Applications: Ductal Recent Experience, 5th High Performance Fiber Reinforced Cement Composites(HPFRCC5), pp.213-222
  4. Chen, W.F. (1982) Plasticity in Reinforced Concrete, Book
  5. Chote. S., Barzin, M. (2007) Flexural Modeling of Strain Softening and Strain Hardening Fiber Reinforced Concrete, 5th High Performance Fiber Reinforced Cement Composites(HPFRCC5), pp.155-164
  6. Diana Element Library User’s Manual
  7. Ekkehard, F., Michael, S. (2004) Ultra High Performance Composite Bridge Across the River Fulda in Kassel, International Symposium on Ultra High Performance Concrete in Germany, Ultra High Performance Concrete, pp.69-75
  8. Giovanni, M., Alberto M. (2007) Strengthening of R/C Beams with High Performance Fiber Reinforced Cementitious Composites, 5th High Performance Fiber Reinforced Cement Composites (HPFRCC5), pp.389-397
  9. Hsieh, S.S., Ting, E.C., Chen, W.F. (1988) Application of A Plastic–Fracture Model to Concrete Structure, Computer & Structure, 28(3), pp.373-393 https://doi.org/10.1016/0045-7949(88)90077-6
  10. Imran, I., Pantazopoulous (2001) Plasticity Model for Concrete under Triaxial Compression, J.Engrg. Mech, 127(3), pp.281-290 https://doi.org/10.1061/(ASCE)0733-9399(2001)127:3(281)
  11. Kittinum, S., Sherif, E.T. (2007) Three Dimensional Plasticity Model for High Performance Fiber Reinforced Cement Composites, 5th High Performance Fiber Reinforced Cement Composites(HPFRCC5), pp.231-240
  12. Nam, S.H. (2004) Finite Element Analysis Solution, Computational Structural Engineering, 17(3), pp.72-77
  13. Paul, A. (2004) Ductal Technology: A Large Spectrum of Properties, A Wide Range of Applications, International Symposium on Ultra High Performance Concrete in Germany, Ultra High Performance Concrete, pp.11-23
  14. Xuehui, A., Koichi, M., Tetsuya I. (2007) Life- span Simulation and Design Approach for Reinforced Concrete Structure, Computational Structural Engineering, 20(4). pp.3-17