摘要
采用"串联多质点系"力学模型,建立了典型500 kV酒杯型输电塔和鼓型输电塔简化模型。根据高频动态测力天平风洞试验结果,计算了输电塔简化模型的风致响应,与根据实际结构有限元模型的结果进行了比较,对简化模型的计算误差及适用性进行了分析。结果表明,简化模型不适合用于格构式结构局部杆件的响应分析,但在计算反映结构整体特性的响应时具有较高的精度。
Based on a multi-degree-freedom model, simplified models of two typical 500kV transmission towers were established. The wind-induced responses of the two simplifed models were computed according to wind tunnel tests, and compared with the results of a finite element model. Moreover, the calculation error and applicability of the two matels were analyzed. The results showed that the two simplified models are not applicable to calculating the responses of local truss members, but have higher accuracy for the responses reflecting the characteristics of the whole structure.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第5期148-152,共5页
Journal of Vibration and Shock
基金
国家自然科学创新研究群体科学基金(50621062)
国家自然科学基金重点项目(50638010)
关键词
输电塔
简化模型
串联多质点模型
风致响应
transmission tower
simplified model
multi-degree-freedom model
wind-induced response
