TRANSVERSE FORCES ON VERTICAL PILE IN REGULAR AND IRREGULAR WAVES

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The magnitude and the fluctuating frequency of the total transverse wave forces, particularly those by irregular waves on an isolated pile are investigated experimentally. The results indicate that the transverse force FL is usually not negligible and the resultant force FR of the transverse force and the inline force may be 40% (in regular waves) or 18% (in irregular waves) larger than the inline force F. The plots of FL/F, FR/F and several kinds of lift coefficient CL versus KC number are given for both regular waves and irregular waves. The methods for estimating the total transverse forces and resultant wave forces are suggested. The magnitude and the fluctuating frequency of the total transverse wave forces, on those isolated irregularities on an isolated pile are investigally experimentally. The results indicate that the transverse force FL is usually not negligible and the resultant force FR of the transverse force and the inline force may be 40% (in regular waves) or 18% (in irregular waves) larger than the inline force F. The plots of FL / F, FR / F and several kinds of lift coefficient CL versus KC number are given for both regular waves and irregular waves. The methods for estimating the total transverse forces and resultant wave forces are suggested.
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