Structural design of Quzhou West Station comprehensive transportation hub project
The comprehensive transportation hub and supporting projects of Quzhou West Station on the Hangzhou-Quzhou High-speed Railway consists of comprehensive transportation hub,station square and ramps.In order to solve the key and difficult problems in the design of large-span arched steel box girder,single-layer reticulated shell+steel grid cylinder column,double-curved concrete roofs and steel box girder curved bridge,the structural analysis of arched steel box girder,tie bar arched roof and steel box girder curved bridge was carried out in the design,and the overall structure scale test and finite element analysis of single-layer reticulated shell+steel grid cylinder column were carried out.At the same time,full-scale test and finite element analysis of important circular tube joints were carried out.The results show that the overall stiffness of the arched steel box girder structure is good and the design is reasonable.The self-balancing of the tie rod arch structure can effectively reduce the foundation thrust and foundation size;the strength,stiffness and anti-overturning checking of single-box double-chamber steel box girder curved bridge meet the design requirements.The overall structure of single-layer reticulated shell+grid cylinder column can still maintain the elastic stress state under 2.0 times of standard combined load.Through the test and finite element analysis of the joint,the mechanical reliability of the welded joint of the large-span free-form steel structure was verified.