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火电厂悬吊煤斗结构限位铅阻尼器耗能减震问题研究
STUDY ON SEISMIC ENERGY DISSIPATION OF LEAD DAMPERS FOR LIMITING RELATIVE DISPLACEMENT IN THE STRUCTURE WITH SUSPENDING COAL HOPPERS OF THERMAL POWER PLANT
【摘要】 对设置铅阻尼器的火电厂悬吊煤斗结构的耗能减震性能进行了研究。首先用解析方法分析了一个双自由度悬吊体—阻尼器结构的地震反应。然后基于地震弹塑性时程计算方法,通过设计具有不同屈服点的双线性屈服模型,分析了设置有铅阻尼器的煤斗悬吊结构的地震反应。计算结果表明,铅挤压式阻尼器对控制悬吊煤斗与结构的相对位移、减小火电厂的结构地震反应有显著的效果。
【Abstract】 It is studied that the seismic properties of suspending coal hopper structure with lead dampers in thermal power plant.Firstly,the seismic response of a two freedom suspending structure with dampers is analyzed by an analytical approach.Then based on the calculation method of elasto-plastic time history analysis,the seismic response of the suspending coal hopper structure with lead dampers is analyzed by designing different yield-points of bilinear yielding model.The result indicates the extruded lead dampers have a distinct effect on controlling relative displacement between suspending coal hopper and structure and reducing the seismic response of the thermal power plant.
【Key words】 suspending coal hoppers extruded lead damper energy dissipation vibration reduction;
- 【文献出处】 工业建筑 ,Industrial Construction , 编辑部邮箱 ,2006年S1期
- 【分类号】TU351
- 【被引频次】5
- 【下载频次】143