1. School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
2. School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
3. China Northwest Architecture Design and Research Institute Co. Ltd., Xi'an 710018, China
4. School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China e-mail:
5. School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China