1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, People’s Republic of China
2. Gansu Province Transportation Planning, Survey &Design Institute Co., Ltd, Lanzhou, People’s Republic of China
3. Gansu Province Engineering Laboratory of Rail Transit Mechanics Application, Lanzhou Jiaotong University, Lanzhou, People’s Republic of China
4. School of Transportation Engineering, Shandong Jianzhu University, Jinan, People’s Republic of China