1. Shandong Hi-Speed Construction Management Group Co.LTD,Jinan,China
2. Lanzhou Jiaotong University,School of Traffic and Transportation,Lanzhou,China
3. Lanzhou Jiaotong University,School of Mathematics and Physics,Lanzhou,China
4. Shandong University,School of Qilu Transportation,Jinan,China
5. Shandong University,Suzhou Research Institute,Suzhou,China