青岛北站主站房为大跨预应力钢结构,结构体系复杂。钢结构施工过程中存在结构体系转换,使得施工过程中的结构受力都与原设计状态存在区别。为保证结构施工过程安全,需要进行仿真分析,得到结构的内力、位移变化数值,用于指导施工。采用MIDAS进行全过程施工仿真分析,验证了施工方案满足设计要求,得到施工控制关键部位,为类似工程提供借鉴。 Qingdao North Station main station room is a large span prestressed steel structure, the structural system is complex. During the construction of steel structure, there is structural system conversion, which makes the structural stress in the construction process different from the original design state. In order to ensure the safety of the construction process of the structure, it is necessary to carry out the simulation analysis to obtain the value of the structural internal force and displacement, which is used to guide the construction. MIDAS was used to simulate the whole process of construction, which verified that the construction plan satisfied the design requirements, obtained the key parts of construction control and provided references for similar projects.