1. Seventh Engineering Bureau, CCCC Frist Highway Engineering Group Co., Ltd., Zhengzhou 451450, China
2. Department of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
3. Huasheng Testing Technology Co., Ltd., Chongqing 400700, China
4. Department of Civil Engineering, KU Leuven, 8000 Bruges, Belgium