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(1 南京林業(yè)大學(xué)土木工程學(xué)院, 南京 210037; 2 南京城鎮(zhèn)建筑設(shè)計(jì)咨詢(xún)有限公司, 南京 210029)
[摘要]提出了一種黏滯流體消能器減震設(shè)計(jì)的實(shí)用設(shè)計(jì)方法:即由設(shè)定的性能目標(biāo)確定地震作用的降低程度,再確定原結(jié)構(gòu)所需要的消能器附加有限阻尼比,再根據(jù)消能器耗散的能量與消能結(jié)構(gòu)的總應(yīng)變能兩者的比值,估算出結(jié)構(gòu)所需消能器的數(shù)量,最后進(jìn)行消能器的優(yōu)化設(shè)計(jì)。采用本文實(shí)用設(shè)計(jì)方法對(duì)一棟框架-剪力墻結(jié)構(gòu)進(jìn)行消能器布置。對(duì)該減震結(jié)構(gòu)在多遇地震和罕遇地震作用下的減震效果分析表明,利用本文實(shí)用方法得到的消能器布置達(dá)到了預(yù)期減震效果。本文實(shí)用方法簡(jiǎn)便準(zhǔn)確,是快速估算黏滯流體消能器數(shù)量和選擇消能器優(yōu)化參數(shù)的有效方法。
[關(guān)鍵詞]消能減震設(shè)計(jì); 附加有效阻尼比; 黏滯流體消能器
中圖分類(lèi)號(hào):TU352.1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2014)04-0074-04
Practical design method for damping structure with viscous dampers based on vibration control objectives
Su Yi1, Yang Fan2, Tan Ningping2
(1 School of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; 2 Nanjing City-Town Architecture Design & Consultants Co., Ltd., Nanjing 210029, China)
Abstract: A practical design method for energy dissipation with viscous dampers was put forward. It is based on performance objective and the earthquake action reduction, the value of needed additional effective damping ratio can be obtained on the primary structure, then according to the ratio value of the dissipating energy by the dampers to the total strain energy of the dissipated structure, the needed damper quantity can be estimated. Finally, the optimal design of damper was conducted. The damper is disposed in a frame-shear wall structure based this practical design method. The damping effect analysis results under frequent earthquate and rare frequent show that the practical method is simple, effective, and can be used to reach anticipated damping quickly. The method put forward here is simple and accurate. So it is an effective practical method for designer to estimate the number of viscous damper and choose damper and optimize parameters quickly.
Keywords: design of energy dissipation; additional effective damping ratio; viscous damper
作者簡(jiǎn)介:蘇毅,博士,副教授,Email:suyi@njfu.edu.cn。
參考文獻(xiàn)
[1]黃鎮(zhèn). 非線(xiàn)性粘滯阻尼器理論與試驗(yàn)研究[D].南京:東南大學(xué),2007.
[2]葉正強(qiáng),李?lèi)?ài)群,婁宇.粘滯流體阻尼器用于建筑結(jié)構(gòu)的減震設(shè)計(jì)原理與方法[J].建筑結(jié)構(gòu),2008,38(8):36~39.
[3]SOONG T T, DARGUSH G F. Passive energy dissipation systems in structure engineering[M]. Chichester: John Wiley & Sons Inc.,1997.
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