Graduate School of Engineering, Kitami Institute of Technology, Hokkaido 090-8507, Japan;
Department of Civil and Environmental Engineering, Kitami Institute of Technology, Hokkaido 090-8507, Japan;
Department of Civil and Environmental Engineering, Kitami Institute of Technology, Hokkaido 090-8507, Japan;
Hokkaido Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism, Hokkaido 090-8507, Japan;