Chen, Yanheng
Jia, Songfang
Funding for this research was provided by:
the Scientific and Technological Research Program of Chongqing Municipal Education Commission (KJ1710254)
the Foundation of Chongqing Three Gorges University (No. 14ZD16)
State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering (No.[2017]3)
National Development and Reform Commission (No. 2017[1007])
Article History
Received: 3 December 2018
Accepted: 7 June 2019
First Online: 21 June 2019
Competing interests
: The authors declare that they have no competing interests.