- 摘 要
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(1 南京林业大学土木工程学院, 南京 210037; 2 南京城镇建筑设计咨询有限公司, 南京 210029)
[摘要]提出了一种黏滞流体消能器减震设计的实用设计方法:即由设定的性能目标确定地震作用的降低程度,再确定原结构所需要的消能器附加有限阻尼比,再根据消能器耗散的能量与消能结构的总应变能两者的比值,估算出结构所需消能器的数量,最后进行消能器的优化设计。采用本文实用设计方法对一栋框架-剪力墙结构进行消能器布置。对该减震结构在多遇地震和罕遇地震作用下的减震效果分析表明,利用本文实用方法得到的消能器布置达到了预期减震效果。本文实用方法简便准确,是快速估算黏滞流体消能器数量和选择消能器优化参数的有效方法。
[关键词]消能减震设计; 附加有效阻尼比; 黏滞流体消能器
中图分类号:TU352.1文献标识码:A文章编号: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
作者简介:苏毅,博士,副教授,Email:suyi@njfu.edu.cn。
参考文献
[1]黄镇. 非线性粘滞阻尼器理论与试验研究[D].南京:东南大学,2007.
[2]叶正强,李爱群,娄宇.粘滞流体阻尼器用于建筑结构的减震设计原理与方法[J].建筑结构,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.