Static analysis of beam resting on elastic foundation by anisotropic beam-foundation element taking into account non-contact between beam and foundation

  • Quy Do Xuan

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
  • Nga Vu Thi

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
Email: quysbvl@utc.edu.vn
Keywords: Beam resting on elastic foundation, FEM, nonlinearity, anisotropic restraints, anisotropic beam-foundation element.

Abstract

Beam resting on the elastic foundation is a common structure in the construction engineering, especially in civil engineering, for instance, ground beams, buoys floating on water, piles resting in foundation or rails acting on railway sleepers. The well-known computing models used in design based on the assumption that beam is fully contacted with foundation. In fact, there are some non-contact regions between beam and foundation, and hence, the above assumption is not always valid. As a result, such conclusions or recommendations made by construction consultants are sometimes inappropriate with the actual behaviors of beam and foundation. This paper proposes a new element in FEM, so-called anisotropic beam-foundation element. Each proposed anisotropic beam-foundation element characterizes a combined model between beam element and foundation. This anisotropic beam-foundation element allows the FE analysis of beam resting on foundation considering contact and non-contact regions between beam and foundation. The behavior of beam and foundation is presented through explicit formulations. As a result, the analysis of beam resting in foundation with these explicit forms leads to faster convergence compared to other methods.

References

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Received
08/04/2021
Revised
10/05/2021
Accepted
14/05/2021
Published
15/06/2021
Type
Research Article
How to Cite
Đỗ Xuân, Q., & Vũ Thị, N. (1623690000). Static analysis of beam resting on elastic foundation by anisotropic beam-foundation element taking into account non-contact between beam and foundation . Transport and Communications Science Journal, 72(5), 552-564. https://doi.org/10.47869/tcsj.72.5.4
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