- 摘 要
-
（廣州大學土木工程學院， 廣州 510006）
［摘要］昆明某高層建筑消能減震結(jié)構(gòu)共布置84個黏滯阻尼器，阻尼器采用肘接布置形式。針對該消能減震結(jié)構(gòu)的抗震性能，分別采用ETABS和Perform 3D軟件對結(jié)構(gòu)在小震和大震作用下的結(jié)構(gòu)響應進行分析，采用兩種方法對附加阻尼比進行計算。分析結(jié)果表明：消能減震結(jié)構(gòu)的樓層剪力、樓層彎矩、樓層位移及層間位移角均減小20%以上，具有良好的減震效果。小震作用下，結(jié)構(gòu)各響應均滿足規(guī)范限值要求，附加阻尼比滿足設計4%要求，能夠達到“小震不壞”的設計目標。大震作用下，結(jié)構(gòu)層間位移角滿足規(guī)范限值要求，基底剪力和頂層位移變化穩(wěn)定，屈服過程總體上符合連梁、框架梁、剪力墻和框架柱依次屈服的機制，能夠達到“大震不倒”的設計目標。本工程主體結(jié)構(gòu)抗震構(gòu)造措施不應降低。肘接式支撐放大了阻尼器的變形，增加了阻尼器耗能效率，小震作用下阻尼器位移是層間位移的2-43倍，大震作用下阻尼器位移是層間位移的1-74倍。
［關鍵詞］消能減震； 阻尼器； 附加阻尼比； 肘接式支撐； 高層建筑
中圖分類號：TU352-1文獻標識碼：A文章編號：1002-848X(2019)07-0116-06
Energy dissipation design for a high-rise building in Kunming
Zhou Yun, Lu Dehui, Gong Chen, Wu Congxiao, Zhang Chao
(School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)
Abstract:84 viscous dampers with toggle style were installed in a high-rise energy dissipation building located in Kunming. Aiming at the seismic performance of the energy dissipation structure, ETABS and Perform 3D software were used to analyze the structural response of the structure under frequent and rare earthquakes, respectively, using two methods to calculate the additional damping ratio. The results indicate that the story shear, story moment, story displacement and story drift of energy dissipation structure could reduce 20%, which reflecting good damping effect. Under frequent earthquake, the response of structure meets the requirements of the code limit, and the additional damping ratio meets the design requirement of 4%, which could reach the design goal of "undamaged under frequent earthquake". Under rare earthquake, the story displacement angle of structure meets the requirement of the code limit, the change of base shear force and top displacement is stable, and the yield process generally conforms to the mechanism of successive yielding of connecting beam, frame beam, shear wall and frame column, which could reach the design goal of "no collapse in rare earthquake". The seismic construction measures of the main structure of this project should not be reduced. The deformation of dampers is enlarge by toggle style brace, and the energy dissipation efficiency is increased， the displacement of dampers under frequent earthquake is 2.43 times of that between stories and 1.74 times of that under rare earthquake.
Keywords:energy dissipation; damper; additional damping ratio; toggle style brace; high-rise building
作者簡介：周云，博士，教授，博士生導師，Email：zhydxs@163.com。
