884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 蘭州理工大學(xué)防震減災(zāi)研究所， 蘭州 730050；2 蘭州理工大學(xué)西部土木工程防災(zāi)減災(zāi)教育部工程研究中心， 蘭州 730050）

［摘要］結(jié)合能力譜法的基本原理，運(yùn)用基于多模態(tài)的耗能減震設(shè)計(jì)方法對(duì)偏心框剪結(jié)構(gòu)進(jìn)行性能化設(shè)計(jì)。提出附加阻尼器后結(jié)構(gòu)的性能目標(biāo)，并對(duì)原結(jié)構(gòu)各階模態(tài)進(jìn)行Pushover分析，得到各階模態(tài)等效單自由度體系最大位移的比值，利用SRSS法將目標(biāo)位移用第1階等效單自由度體系的最大允許位移表示。同時(shí)依據(jù)能力譜法的基本原理計(jì)算結(jié)構(gòu)所需附加阻尼比，并根據(jù)阻尼系數(shù)與層間位移成正比的分配模式對(duì)所選粘滯阻尼器進(jìn)行合理的布置。對(duì)原結(jié)構(gòu)與附加阻尼器結(jié)構(gòu)進(jìn)行時(shí)程分析，計(jì)算結(jié)果表明：附加阻尼器后，結(jié)構(gòu)的位移響應(yīng)減小較多，層間位移角趨于均勻，其抗震性能可達(dá)到預(yù)先提出的性能目標(biāo)。

［關(guān)鍵詞］偏心框架-剪力墻結(jié)構(gòu); 粘滯阻尼器; 多模態(tài); 阻尼比; 性能目標(biāo)

中圖分類號(hào)：TU352.1    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2014)04-0069-05

Research on multimode-based energy dissipation design for eccentric frame-shear wall structures

Li Hui1, 2, Huang Xiaoning1, Du Yongfeng1, 2

(1 Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, China; 2 Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China)

Abstract: Combined with the principle of capacity spectrum method, multimode-based energy dissipation design method was used to carry out the performance-based design for eccentric frame-shear wall structures. Performance objectives of the structure with dampers were proposed. Ratios of the maximum displacements of equivalent single degree of freedom (SDOF) systems were obtained by Pushover analysis on all the modes of original structure. SRSS method was used to represent the objective displacement with the maximum allowable displacement of the firstorder equivalent SDOF system. The supplement damping ratio was calculated based on capacity spectrum method, and then the selected viscous dampers were placed properly according to the distribution model in direct proportion to the damping parameter and interstory displacement. Finally, structures with and without dampers were analyzed by time-history analysis method. Comparison of the results shows that after the set of dampers, displacements of the structure reduce obviously and interstory angles of the structure become uniform. The structure with dampers can reach the proposed performance objectives.

Keywords: eccentric frame-shear wall structure; viscous damper; multimode; damping ratio; performance objective

*國(guó)家自然科學(xué)基金資助項(xiàng)目（50978130）。

作者簡(jiǎn)介：李慧，教授，博士生導(dǎo)師，Email:dooyf@sohu.com。

參考文獻(xiàn)

［1］蔣建，呂西林，翁大根.附加黏滯阻尼器減震結(jié)構(gòu)基于性能的抗震設(shè)計(jì)方法［J］.力學(xué)季刊，2009，30（4）：577-586.

［2］馮傳山, 李亞明, 熊學(xué)玉. 基于能力譜法的耗能減震加固設(shè)計(jì)［J］. 建筑結(jié)構(gòu),2007,37（S1）:24-26.

［3］李英民，劉建偉，周自強(qiáng). 基于性能的抗震加固方法在框架結(jié)構(gòu)中的應(yīng)用［J］. 建筑結(jié)構(gòu)，2012，42（7）：88-92.

［4］李剛，李宏男. 基于位移的消能減震結(jié)構(gòu)抗震設(shè)計(jì)方法［J］.工程力學(xué)，2007，24（9）：88-94.

［5］CHOPRA AK, GOEL RK A. Modal pushover analysis procedure for estimating seismic demands for buildings［J］. Earthquake Engineering and Structural Dynamics,2002,31（3）:561-582.

［6］馬千里，葉列平，陸新征.MPA法與Pushover法的準(zhǔn)確性對(duì)比［J］.華南理工大學(xué)學(xué)報(bào):自然科學(xué)版，2008，36（11）：121-129.

［7］吳學(xué)淑，王翠坤.基于多模態(tài)的耗能減震設(shè)計(jì)［J］.土木工程學(xué)報(bào)，2009，42（9）：1-6.

［8］GB 50011—2010 建筑抗震設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2010.

［9］CHIN HSIUNG LOH, PEI YANG LIN, NAN HAU CHUNG. Design of dampers for structures based on optimal control theory［J］. Earthquake Engineering and Structural Dynamics ,1992,9（29）:1307-1323.

［10］LIN W H，CHOPRA AK. Asymmetric one-story elastic systems with non-linear viscous and viscoelastic dampers earthquake response［J］. Earthquake Engineering and Structural Dynamics, 2003, 32(4): 555-577.

［11］李慧,劉迪，杜永峰. 附設(shè)耗能裝置的高層基礎(chǔ)隔震建筑抗震性能研究［J］.土木工程學(xué)報(bào)，2010，43（增刊）：276-281.