刚-柔悬挂结构动力性能研究

Study on dynamic performance of the rigid-flexible suspension structure

提出了一种新型吊杆连接方式的刚-柔悬挂结构。建立结构的三维有限元模型,进行模态分析。在考虑材料非线性的基础上,分别进行了多遇地震作用下的弹性时程分析和罕遇地震作用下的弹塑性时程分析,得到结构的地震响应,并且与现有吊杆连接方式的结构进行了比较。结果表明,相对于现有吊杆连接方式的结构体系,这种新结构体系在多遇地震和罕遇地震作用下均能够更好地降低主体结构的地震响应,具有更好的抗震性能。

A rigid-flexible suspension structure with a new connection type of suspenders was put forward. The three- dimensional finite element model of this structure was established and the model analysis was conducted. Based on the consideration of the material nonlinearity, the elastic time-history analysis of the model under the frequent earthquake and the elastic-plastic time-history analysis of the model under the rare earthquake were conducted. The dynamic performance of the structure was obtained and it was compared with that of structures with current connection type of suspenders. The result shows that compared with structural system with current connection type of suspenders, the new structural system can reduce seismic response of the major structure under both the frequent earthquake and the rare earthquake and it has better seismic performance.