1. Professor, Institute of Geotechnical Engineering, Southeast University, Nanjing, Jiangsu, China, 210096, Telephone: +86 25 83795836; Telefax: +86 25 83795836; E-mail: lc.miao@seu.edu.cn (corresponding author)
2. Lecturer, Institute of Geotechnical Engineering, Southeast University, Nanjing, Jiangsu, China, 210096, Telephone: +86 25 83792776; Telefax: +86 25 83795836; E-mail: feiwangseu@gmail.com
3. Professor, Department of Civil, Environmental, and Architectural Engineering, University of Kansas, Lawrence, KS 66045, USA, Telephone: +1 785 864 3714; Telefax: +1 785 864 5631; E-mail: jiehan@ku.edu
4. Lecturer, School of Civil Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China,Telephone: +86 25 85428890; Telefax: +86 25 85427768; E-mail: lvweihua@yahoo.com.cn