帶RC耗能器-限位斜撐框架抗震性能研究
閆維波，李振寶，馬華，周錫元
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（北京工業(yè)大學，北京 100022）［摘要］通過兩榀設置鋼筋混凝土耗能器框架的偽靜力試驗，對比了設有限位斜撐及未設限位斜撐兩種方案下結構的抗震性能，得到了兩種情況下各構件的破壞過程、破壞形態(tài)和框架的滯回特性等。通過計算分析探討了耗能器、限位斜撐分別對結構承載力和剛度的貢獻。結果表明，耗能器屈服可以先期消耗部分地震能量，改善了框架整體的延性，而限位斜撐則大幅提高了結構后期的承載能力，充分體現(xiàn)了設置多道抗震防線的思想。［關鍵詞］鋼筋混凝土；框架；耗能器；限位斜撐；抗震性能Seismic behavior of frame with RC dampers and lock-up bracesYan Weibo， Li Zhenbao， Ma Hua， Zhou Xiyuan(Beijing University of Technology, Beijing 100022, China)Abstract:Experiments of two frames with high ductile RC dampers subjected to low cyclic loading are conducted,and the seismic performance of frame with or without braces is compared. Damage process and form of the members and hysteresis behavior of the frames are obtained. The contribution of the dampers and braces to rigidity and loading capacity of the whole frame is calculated respectively. The results show that dampers yield prior to the columns and partly dissipate earthquake energy. The dampers improve the ductility of the frame to a certain extent and the lock-up braces enhance the post loading capacity of the frame. The results supply references to structure designers.Keywords:reinforced concrete; frame; damper; lock-up brace; seismic performance*教育部留學回國人員科研啟動基金資助項目(131(VE)00103)；北京市優(yōu)秀留學人員科技活動擇優(yōu)資助項目(143(VQ)0004)。作者簡介：閆維波，博士，Email:super@emails.bjut.edu.cn。參考文獻［1］李振寶，熊威，閆維波，等. 鋼管混凝土延性柱耗能器抗震性能試驗研究［J］，建筑結構，2006，36（S1）.［2］李振寶，王文娟，王磊. 鋼筋混凝土延性柱耗能器抗震性能試驗研究［J］.建筑結構，2006，36（S1）.［3］JGJ101—96 建筑抗震試驗方法規(guī)程［S］. 北京：中國建筑工業(yè)出版社，1996.［4］過鎮(zhèn)海,時旭東. 鋼筋混凝土原理和分析［M］ 北京：清華大學出版社，2003.［5］GB50011—2001建筑抗震設計規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2001.
