换流站阀厅结构设计动力系数研究

Study of Dynamic Coefficient in Structure Design of Valve Hall of Converter Station

以换流站阀厅为研究对象,研究阀厅结构中悬挂的一组质量较大的硅阀在地震作用下对阀厅结构的影响。利用商业有限元软件SAP2000,采用动力时程的分析方法,对硅阀与阀厅结构之间相互作用的进行了模拟。通过对6组常用结构类型的房屋进行分析和比较,发现多向地震激励下硅阀会出现明显的竖向地震响应;为了便于设计,可取重力荷载代表值乘以一个动力系数作为等效荷载替代结构整体的动力时程分析。

Valve hall structure of converter station is studied to find the effect of a large mass group of silicic valves to the hall structure under the earthquake action.Commercial FE software SAP2000 is used to simulate the interaction between the silicic valves and valve hall by the dynamic time history method.Six types of general structure are analyzed and compared,that silicic valve will have obvious seismic response in vertical direction.For the ease of design,an equivalent load that equals to the representative value of gravity load multiplied by a dynamic coefficient can be used to substitute the dynamic time history analysis of the whole structure.