Abstract
In regard to quaywall on shallow water at fishing port, the seismic coefficient method has been applied to a design against level-one earthquake ground motion. However, Improved design technique which realizes adequate seismic performance is required to cope well with the performance regulations for fishing port facilities in the near future. Therefore, in this paper, based on seismic design technique of commercial and industrial port, design parameters for quaywall on shallow water are examined. First, Two-dimensional dynamic finite element analyses on typical cross section of gravity-type quaywall are conducted against various sine waves. These analyses show the accerelation values which bring prescribed displacement by frequency of sine waves. These values bring the design parameters to reflect frequency characteristic of gravity-type quaywall on shallow water, duration time of ground motion and allowable displacement during in-service period. The improved coefficient for seismic design can be calculated from these parameters. Finally, the analyses are carried out on a cross section of quaywall designed upon these parameters against various level-one seismic waveforms. These indicate the validity of parameters.
