1. Associate Professor, College of Civil Engineering and Architecture, Guangxi Univ., Nanning, Guangxi 530004, China.
2. Postgraduate Student, College of Civil Engineering and Architecture, Guangxi Univ., Nanning, Guangxi 530004, China.
3. Professor, College of Civil Engineering and Architecture, Guangxi Univ., Nanning, Guangxi 530004, China (corresponding author). ORCID: .
4. Professor, Dept. of Earth Sciences, Univ. of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa.