1. College of Civil Engineering and Architecture, Guangxi University, Nanning, P. R. China
2. Key Laboratory of Disaster Prevention and Structural, Safety of Ministry of Education, Guangxi University, Nanning, P. R. China
3. Guangxi Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning, P. R. China
4. Guangdong Architectural Design & Research Institute, Guangzhou, P. R. China