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AN ANALYSIS OF PILE-SUPPORTED STRUCTURES (PART 2)

The linear elastic analysis method of pile-supported structures has been presented in the first report and in this paper, a non-linear analysis method and a buckling analysis method are studied. In the first section, the non-linear structural analysis method is considered in conjunction with a computer program. If the foundation is a non-linear elastic continuum, the coefficient (K value) of horizontal subgrade reaction of the ground varies in accordance with the amount of displacement so that the K value was computed on the basis of load deflection curve, P-Y, by iteration method. As an example, the result of the analysis of plane frame is reported. The buckling analysis of a pile buried in a elastic continuum by finite method is described in the second section. In order to investigate the buckling load, the stiffness matrix and initial stress matrix of a pile buried in an elastic continuum based on the formula of Y. L. Chang have been induced and the buckling loads were calculated after preparing a compatibility and equilibrium equation at each node. In the design of offshore and harbour structures, it is very difficult to quickly and exactly calculate the external forces but a computer program called COSMS has been developed. The COSMS can automatically compute the force of wave and current, wind and dead load necessary for structural calculation. It is expected that the COSMS can be linked with the analysis program for nonlinear pile structures in the near future.

  • Corporate Authors:

    Mitsui Shipbuilding and Engineering Company, Ltd

    6-4 Tsukiji, 5-chome, Chuo-ku
    Tokyo,   Japan 
  • Publication Date: 1977

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Filing Info

  • Accession Number: 00167753
  • Record Type: Publication
  • Source Agency: Mitsui Technical Review
  • Report/Paper Numbers: No. 99
  • Files: TRIS
  • Created Date: Jan 13 1978 12:00AM