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

（北京工業(yè)大學(xué)城市與工程安全減災(zāi)省部共建教育部重點(diǎn)實(shí)驗(yàn)室， 北京 100124）

［摘要］黏滯阻尼器耗能貢獻(xiàn)與速度響應(yīng)有關(guān)，傳統(tǒng)靜力非線性分析方法（Pushover）由于無法反應(yīng)結(jié)構(gòu)瞬態(tài)，故無法考慮黏滯阻尼器的貢獻(xiàn)。建議用性能點(diǎn)位移計(jì)算阻尼器貢獻(xiàn)，并將其等效為結(jié)構(gòu)阻尼進(jìn)行結(jié)構(gòu)設(shè)計(jì)。通過反復(fù)迭代直至性能點(diǎn)處有效阻尼比數(shù)值穩(wěn)定，從而在Pushover中考慮黏滯阻尼器的貢獻(xiàn)。使用本方法可方便計(jì)算結(jié)構(gòu)在多遇地震下黏滯阻尼器的貢獻(xiàn)，合理進(jìn)行設(shè)計(jì)反應(yīng)譜分析并評(píng)估結(jié)構(gòu)性態(tài)，為復(fù)雜結(jié)構(gòu)方案設(shè)計(jì)定型和優(yōu)化提供一套有效方法。借鑒試驗(yàn)中常用的自由衰減振動(dòng)測定結(jié)構(gòu)阻尼比的方法，使用數(shù)值加載方法進(jìn)行計(jì)算，所得的阻尼比與本文計(jì)算結(jié)果十分相近。按現(xiàn)行規(guī)范選取6條地震波，并按本文方法設(shè)定的黏滯阻尼器方案進(jìn)行的多遇地震下非線性動(dòng)力時(shí)程分析表明，合理考慮黏滯阻尼器貢獻(xiàn)，可能直接影響到結(jié)構(gòu)側(cè)移合格的結(jié)論。

[關(guān)鍵詞]黏滯阻尼器; 非線性分析; 能量理論

中圖分類號(hào)： TU318 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：  1002-848X(2016)S1-0384-07

Study on the Pushover analysis methods of structures with viscous damper

Li Yanglong, Gao Xiangyu, Ding Caihong, Wu Shuang

(The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, 

Beijing University of Technology, Beijing 100124, China)

Abstract: The energy dissipation of viscous damper is closely related to the response of velocity. Since the traditional pushover method cannot show the transient response of the structure, there are some difficulties in quantifying the contributions of viscous damp in structural analysis. Therefore, it suggests a new method to design structure considering structural damping which contains the damping of viscous damp, based on the displacement of the performance point. Then, this method takes the contributions of viscous damp into account by iterating the result of the performance point of pushover analysis until the value of structural equivalent damping ratio is stable. Moreover, structural design engineer can conveniently make use of this method to calculate the contributions of viscous damp under frequent seismic and rationally analyze the structure, according to both design response spectrum and structural performance, and it can be an effective method to design and optimize complex structure scheme. The consequence of structural damping through the free vibration of structure which is used to measure the damping ratio, utilizing numerical experimentation, is similar to the damping ratio calculated by paper′s method. And, the result of the nonlinear dynamic time history analysis of structure ,whose scheme not merely selects 6 seismic waves of compliance with regulations but adopts this method under frequent seismic, indicates that the contributions of viscous damp may make a difference in demand of inter-story displacement.

Keywords: viscous damper； nonlinear static analysis； energy theory

作者簡介： 李楊龍，碩士研究生，Email：tszylyl@126.com。

*北京市自然科學(xué)基金資助項(xiàng)目(8141001)。