Department of Civil & Environmental Engineering, University of California at Berkeley, Berkeley CA 94720-1710, USA;
College of Shipbuilding and Ocean Engineering, Harbin Engineering University, Harbin 150001, China;
College of Shipbuilding and Ocean Engineering, Harbin Engineering University, Harbin 150001, China;
College of Shipbuilding and Ocean Engineering, Harbin Engineering University, Harbin 150001, China;
College of Shipbuilding and Ocean Engineering, Harbin Engineering University, Harbin 150001, China;