1. School of Civil and Transportation Engineering, Northeast Forestry Univ., No. 26, Hexing Rd., Xiangfang District, Harbin 150040, China (corresponding author).
2. School of Civil and Transportation Engineering, Northeast Forestry Univ., No. 26, Hexing Rd., Xiangfang District, Harbin 150040, China.
3. School of Civil and Transportation Engineering, Northeast Forestry Univ., Harbin 150040, China; Institute of Engineering Mechanics, CEA, No. 29, Xuefu Rd., Nangang District, Harbin 150080, China.