广西大学学报(自然科学版)
廣西大學學報(自然科學版)
엄서대학학보(자연과학판)
JOURNAL OF GUANGXI UNIVERSITY (NATURAL SCIENCE EDITION)
2013年
4期
991-995
,共5页
李永靖%张晶%张旭%邢洋
李永靖%張晶%張旭%邢洋
리영정%장정%장욱%형양
偏心结构%粘滞阻尼器%周期比%平扭耦联反应
偏心結構%粘滯阻尼器%週期比%平扭耦聯反應
편심결구%점체조니기%주기비%평뉴우련반응
eccentric structure%viscous damper%cycle ratio%even translation-torsion coupling re-action
针对地震时周期比超限偏心结构的扭转破坏具有突发性的问题,为了研究粘滞阻尼器和普通工字型钢支撑对周期比超限偏心结构扭转耦联振动的控制效果,通过理论分析和有限元数值计算,对比分析了粘滞阻尼器及普通工字型钢支撑共同控制地震作用下不规则建筑结构的自振特性、层间位移、层间位移角、层间扭转角及其内力变化等动力响应。结果表明:设置粘滞阻尼器控制结构,层间位移角最大降低21%,顶层位移峰值最大降低32%,加速度峰值最大降低28%,扭转角最大降低31%;设置粘滞阻尼器与普通钢支撑联合控制后,层间位移角最大降低26%,顶层位移峰值最大降低41%,加速度峰值最大降低38%,扭转角最大降低45%,说明粘滞阻尼器与普通钢支撑结合对偏心结构的控制效果好于粘滞阻尼器控制结构。
針對地震時週期比超限偏心結構的扭轉破壞具有突髮性的問題,為瞭研究粘滯阻尼器和普通工字型鋼支撐對週期比超限偏心結構扭轉耦聯振動的控製效果,通過理論分析和有限元數值計算,對比分析瞭粘滯阻尼器及普通工字型鋼支撐共同控製地震作用下不規則建築結構的自振特性、層間位移、層間位移角、層間扭轉角及其內力變化等動力響應。結果錶明:設置粘滯阻尼器控製結構,層間位移角最大降低21%,頂層位移峰值最大降低32%,加速度峰值最大降低28%,扭轉角最大降低31%;設置粘滯阻尼器與普通鋼支撐聯閤控製後,層間位移角最大降低26%,頂層位移峰值最大降低41%,加速度峰值最大降低38%,扭轉角最大降低45%,說明粘滯阻尼器與普通鋼支撐結閤對偏心結構的控製效果好于粘滯阻尼器控製結構。
침대지진시주기비초한편심결구적뉴전파배구유돌발성적문제,위료연구점체조니기화보통공자형강지탱대주기비초한편심결구뉴전우련진동적공제효과,통과이론분석화유한원수치계산,대비분석료점체조니기급보통공자형강지탱공동공제지진작용하불규칙건축결구적자진특성、층간위이、층간위이각、층간뉴전각급기내력변화등동력향응。결과표명:설치점체조니기공제결구,층간위이각최대강저21%,정층위이봉치최대강저32%,가속도봉치최대강저28%,뉴전각최대강저31%;설치점체조니기여보통강지탱연합공제후,층간위이각최대강저26%,정층위이봉치최대강저41%,가속도봉치최대강저38%,뉴전각최대강저45%,설명점체조니기여보통강지탱결합대편심결구적공제효과호우점체조니기공제결구。
Aiming at the paroxysmal destruction of eccentric structures caused by torsion under the action of earthquake , in order to analyze the vibration control effect of viscous damper and steel sup-port on the lateral-torsion response of eccentric structures , based on theoretical analysis and numeri-cal calculation , the free vibration characteristics , interlayer displacement , interlayer displacement angle , interlayer torsion angle and internal force change of the irregular structures were comparative-ly analyzed .The results indicated that the control structure with viscous dampers reduced the maxi -mum value of some parameters of which the interlayer displacement angle was reduced by 21%, the topmost story displacement was reduced by 32%, the interlayer acceleration was reduced by 28%, and the interlayer torsion angle was reduced by 31%.Combined with the ordinary steel support , the interlayer displacement angle was reduced by 26%, the topmost story displacement was reduced by 41%, the acceleration was reduced by 38%, the interlayer torsion angle was reduced by 45%, showing that the control effect of viscous dampers and steel supports on eccentric structures is better than that of the viscous dampers only .