1. Institute of Applied Mechanics, Ningbo Polytechnic, Ningbo 315800, China
2. School of Civil Engineering, Central South University, Changsha 410075, China
3. Research Center of Integrated Pipe Gallery, Ningbo Urban Construction Design & Research Institute Co., Ltd., Ningbo 315012, China
4. Institute of Architecture and Urban Planning, China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China