Fatigue life prediction of the marine steel gates


Yilmaz L., Ozgen A.

2nd International Conference on Marine Technology (ODRA 97), Szczecin, Poland, 01 May 1997, pp.159-167 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Szczecin
  • Country: Poland
  • Page Numbers: pp.159-167

Abstract

The maritime structures are subjected to the effects of nonbreaking, breaking and broken waves. Quaywalls are designed by the hydrostatic pressures and dynamical forces of the wave motions; and Morison's forces to the legs are also taken into account if their combinations cause greater stresses. Members and fasteners of the quaywalls in harbour which are subjected to repeated variations and reversals of stresses shall be designed so that the maximum stress does not exceed the given allowable stresses, and the actual range of stress does not exceed the allowable fatigue stress range. The main objective of the paper is to present a procedure to calculate effective stress range for quaywall members under variable-amplitude random-sequence stress spectrums and to give analytical method for predicting fatigue life under variable amplitude stress spectrums from constant amplitude fatigue stress.