Funding for this research was provided by:
National Natural Science Foundation of China (11564004)
National Natural Science Foundation of China (61501129)
Natural Science Foundation of Guangxi Province (2014GXNSFAA118008)
Special Funds of Guangxi Distinguished Experts Construction Engineering
Xiangsihu Young Scholars and Innovative Research Team of GXUN
Article History
Received: 13 May 2017
Accepted: 18 September 2017
First Online: 25 September 2017