About the Authors

Feng Han

Roles Writing – original draft

Affiliation School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, China

Yunxiang Luo

Roles Writing – original draft

1092170152@qq.com

Affiliation School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, China

Competing Interests

The authors have declared that no competing interests exist.