1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2. Guangxi Nanbai Expressway Co., Ltd., Nanning 530029, China
3. Research Institute of Highway, Ministry of Transport, Beijing 100088, China
4. Yunnan Provincial Transportation Planning and Design Research Institute Co., Ltd., Kunming 650000, China
5. Guangxi Nantian Expressway Co., Ltd., Nanning 530022, China
6. Construction Headquarters of Nujiang Beautiful Highway Greenway, Nujiang 673200, China