[1]Centers for Civil Engineering and Architectures, Kansai Electric Power Co., Inc., Fukushima Ward, Osaka, Osaka 553-0003,Japan;
[2]Port and Coastal Engineering Group, Newjec Inc., Kita Ward, Osaka, Osaka 531-0074, Japan;
[2]Port and Coastal Engineering Group, Newjec Inc., Kita Ward, Osaka, Osaka 531-0074, Japan;