[1] National Institute for Land Infrastructure and Management, MLIT, Kanagawa, Yokosuka, Japan
[2] Graduate School of Management, Kyoto University, Kyoto, Kyoto, Japan
[3] Kinki Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism(MLIT), Hyogo, Kobe, Japan
[4] Harbor Airport Bureau, Wakayama Prefecture, Wakayama, Wakayama, Japan
[5] Kochi Civil Engineering Office, Kochi Prefecture, Kochi, Kochi, Japan
[6] Research Department, Costal Development Institute of Technology(CDIT), Minato-ku, Tokyo, Japan