1. College of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, China
2. Department of Architecture, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku , Yokohama 221-8686, Japan; Beijing 100124, China
3. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, 3-27-1 Rokkakubashi, Kanagawa-ku , Yokohama 221-8686, Japan; Beijing 100124, China