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

作　　者：廖翌棋[1] 高政国[1] 姚德康[2] 

机构地区：[1]北京航空航天大学土木工程系,北京100083 [2]华北电力设计院,北京100011

出　　处：《工业建筑》2006年第z1期203-206,共4页Industrial Construction

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。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.

关 键 词：悬吊煤斗 铅挤压式阻尼器 耗能 减震 

分 类 号：TU351[建筑科学—结构工程]