1. College of Civil Engineering and Architecture, Center for Balance Architecture, Zhejiang Univ., Hangzhou 310058, P. R. China (corresponding author).
2. College of Civil Engineering and Architecture, Zhejiang Univ., Hangzhou 310058, P. R. China.
3. Hangzhou CBD Construction Development CO., LTD, Hangzhou 310058, P. R. China.
4. China United Engineering Corporation Limited, No. 1060 Binan Rd., Binjiang District, Hangzhou, Zhejiang 310052, P. R. China.