- 摘 要
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（1 深圳市力鵬建筑結構設計事務所, 深圳 518034；2深圳華僑城房地產有限公司, 深圳 518053）
［摘要］工程上對鋼與混凝土組合結構的阻尼比取值尚缺乏根據(jù)。對應變能阻尼比的計算方法進行了論述，通過實例計算，比較了組合結構采用單一阻尼比和采用應變能阻尼比時的內力和位移。計算結果表明，組合結構的各階振型的應變能阻尼比與振型中不同材料構件參與振動的程度有關。對組合結構取單一阻尼比進行抗震計算會使鋼構件的內力偏小或混凝土構件的內力偏大，建議采用應變能阻尼比法進行抗震計算。
［關鍵詞］組合結構; 應變能阻尼比法; 阻尼矩陣; 阻尼比; 計算方法
中圖分類號：TU398 文獻標識碼：A 文章編號：1002-848X(2014)06-0023-04
Strain-energy damping ratio method of composite structures for seismic design
Sun Renfan1, Wei Lian1, Liu Weiya2, Wei Chengji1, Liu Yuewei1
(1 Shenzhen Li Peng Building Structure Design Institute, Shenzhen 518034, China; 2 OCT Co., Ltd., Shenzhen 518053, China)
Abstract: There is almost no basis to ensure the damping ratio of steel and concrete composite structures in engineering. The calculation method of strain-energy damping was discussed. The force and displacement that used single damping value and the strain-energy damping value were compared by calculating examples. The results show that the all orders strain-energy damping ratio of composite structure is related to the vibrations level of members with different material in modal.The seismic calculation results of composite structure by using single damping ratio may underestimate the force of steel member or over value the force of concrete member. The strainenergy damping ratio method is more reasonable for composite structure.
Keywords: composite structure; strain-energy damping ratio method; damping matrix; damping ratio; calculation method
作者簡介：孫仁范，碩士，高級工程師，Email：srf@163.com。
參考文獻
［1］JGJ 3—2010高層建筑混凝土結構技術規(guī)程［S］. 北京：中國建筑工業(yè)出版社, 2011.
［2］GB 50011—2010建筑抗震設計規(guī)范［S］. 北京：中國建筑工業(yè)出版社, 2010.
［3］武騰清. 結構物動力設計［M］. 騰家祿,譯. 北京：中國建筑工業(yè)出版社,1984.
［4］CHOPRA A K. 結構動力學［M］. 謝禮立,呂大剛,譯. 北京：高等教育出版社, 2005.
