1. School of Civil Engineering, Shenyang Jianzhu Univ., 9 Hunnan East Road, Shenyang, CN, 110168 (Corresponding author), e-mail: sunli2000sy@163.com
2. Centre for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin Univ., Kent Street, Bentley, WA 6102, AU.
3. School of Civil Engineering, Shenyang Jianzhu Univ., 9 Hunnan East Road, Shenyang, CN, 110168.