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Fiber Beam Element Model for the Collapse Simulation of Concrete Structures under Fire

In: Computational Mechanics

Author

Listed:
  • S. C. Chen

    (Tsinghua University, Department of Civil Engineering)

  • X. Z. Lu

    (Tsinghua University, Department of Civil Engineering)

  • A. Z. Ren

    (Tsinghua University, Department of Civil Engineering)

  • J. J. Jiang

    (Tsinghua University, Department of Civil Engineering)

Abstract

In order to analyze and simulate the collapse of reinforced concrete elements under fire, a novel numerical model based on the fiber beam model is proposed in this paper. By dividing the cross section of beam element into many small concrete and steel fibers and assigning different materials to each fiber, this model can consider the non-uniform temperature distribution across the section and simulate the behavior of cracking or crushing for concrete and yielding for steel. The explicit tangential stiffness matrix is deduced for proposed fiber beam with Total Lagrange description, and the incremental equilibrium equations are also established. Finally, the fiber model proposed in this paper is validated by comparing with various experimental results.

Suggested Citation

  • S. C. Chen & X. Z. Lu & A. Z. Ren & J. J. Jiang, 2007. "Fiber Beam Element Model for the Collapse Simulation of Concrete Structures under Fire," Springer Books, in: Computational Mechanics, pages 288-288, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-75999-7_88
    DOI: 10.1007/978-3-540-75999-7_88
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