1. Département de génie mécanique; École Polytechnique de Montréal; Montréal H3C 3A7 Canada
2. Institute of Geotechnical Engineering, Zhejiang University; Hangzhou 310058 China
3. MOE Key Laboratory of Soft Soils and Geo-environmental Engineering, Zhejiang University; Hangzhou 310058 China
4. Department of Civil Engineering; Zhejiang University City College; Hangzhou 310015 China