摘要
抗震分析中,核电厂、火电厂及各种石油化工厂房中的某些重要管道(如核电厂中的主管道)需做动力学时程分析,分析所需的位移时程来源于建筑厂房的抗震分析。从建筑厂房抗震模型得到的位移时程能否作为管道分析唯一的边界条件?是否应当在输入时程数据的同时,再考虑厂房的刚度对计算结果的影响?基于结构力学和有限元的基本理论,对上述计算方法的正确性做理论推导,并通过有限元实例进行静力工况和动力工况的计算验证。
In the process of seismic analysis, time history analysis is needed for some important piping systems in the nuclear power and thermal power plant. The time histories are from the seismic analysis of civil structure, and are the only inputs for the piping seismic analysis. Puts forward a question that whether should consider some other factors from the structure besides the displacement time histories, for ex- ample, the stiffness of the concrete. Through the research, illustrates that the displacement or force time history from the structure or main model can be the only inputs for the piping or sub_model analysis.
关键词
时程分析
解耦
刚度
Time History Analysis
Decouple
Stiffness
