单层球面网壳的粘弹性阻尼器减震控制参数分析

英文篇名：Parameter analysis of seismic control about Large-scale Single-layer spherical shell with viscoelastic dampers
中文刊名：暨南大学学报(自然科学与医学版)
英文刊名：Journal of Jinan University(Natural Science & Medicine Edition)
作者：李媛萍 ; 张卫 ; 王仕统
英文作者：LI Yuan-ping1 ; 2 ; ZHANG Wei3 ; WANG Shi-tong4(Jinan University ; 1.Department of Mechanics and Civil Engineering ; 2.Key Lab of Disaster Forecast and Control in Engineering ; Ministry of Education of the People's Republic of China ; 3.Department of Electronic Engineering ; Guangzhou 510632 ; China ; 4.School of Civil Engineering and Transportation ; South China University of Technology ; Guangzhou 510640 ; China)
中文关键词：单层球面网壳 ; 粘弹性阻尼器 ; 减震控制 ; 常遇地震 ; 罕遇地震
英文关键词：single-layer spherical shell ; viscoelastic dampers ; seismic control ; common earthquake ; rare earthquake
出版日期：2010-06-15
机构：暨南大学力学与土木工程系;暨南大学重大工程灾害与控制教育部重点实验室;暨南大学电子工程系;华南理工大学土木与交通学院;
年：2010
期：03
出版单位：暨南大学学报(自然科学与医学版)

摘要

通过数值计算方法,分析了粘弹性阻尼器的特征参数对减震效果的影响规律.考虑阻尼器的等效刚度系数不变而等效阻尼系数改变和等效阻尼系数不变而等效刚度系数改变两种情形,并分别选取加速度峰值为70gal和400 gal的El-Centro波、Taft波和天津波作用于无控和受控单层球壳,利用ANSYS进行非线性动力时程分析,得到球壳受控前后的最大节点位移、杆件的最大轴力、最大支座反力以及不同阻尼器参数情形下的减震系数.结果表明:阻尼器参数决定减震效果的好坏;不同地震波作用下的减震规律有所不同;罕遇地震作用下减震效果更明显.
Numerical strategy is performed to investigate the influence of damper's parameters to vibration effort.El-Centro wave,Taft wave and Tianjin wave with peak acceleration located at 70gal and 400gal are acted on the single-layer spherical reticulated shell with and without control respectively.Maximum nodal displacements and maximum axial forces as well as maximum support forces are gotten through non-linear dynamic time-history analysis by ANSYS software.Subsequently,the vibration reduction coefficients under different parameters are calculated.The results show that it is feasible to control the vibration arisen from earthquake by viscoelastic dampers,but the control effort is essentially influenced by the dampers' parameters;the efforts of vibration reduction under different seismic waves are somewhat different,and it indicates that the damping effect is more obvious under rare earthquake.

引文

[1]SHINGU K.Study on Dase Isolation Shell Subjected toVertical Seismic Forces[C].Proc.of 6th Int Conf ofCompute Civil Build Eng,1995,8(5):1167-1177.
    [2]SHINGU K,FUKUSHMA K.Dynamic response of baseisolated rotational shell with edge beam and fuzzy vibra-tion control of the shell[J].International Journal ofSpace Strucures,1997,12(3/4):173-179.
    [3]NIKI T,SHINGUK,Experimental study on base isolatedshell structures[J].Seismic Engineering,1998,12(1):63-68.
    [4]周晓峰,陈福江,董石麟.粘弹性阻尼材料支座在网壳结构减震控制中性能研究[J].空间结构,2000,6(4):21-28.
    [5]高博青,董石麟.折板式网壳结构的抗震及减震研究[J].浙江大学学报:理学版,2002,29(5):589-594.
    [6]HORR A,SCHMIDT L C.Dynamic response of adamped large space structure:a newfraction-spectral ap-proach[J].International Journal of Space Structure,1994,10(2):113-120.
    [7]HORR A M,SCHMIDTL C.Frequency domain dynami-cal analysis of large space structures added electrometricdampers[J].International Journal of Space Structure,1996,11(3):279-289.
    [8]杨飏,范峰,沈世钊.凯威特单层球面网壳结构隔震分析[J].世界地震工程,2007,23(4):25-29.
    [9]范峰,沈世钊.单层球壳模拟地震振动台试验及结构减震试验研究[J].哈尔滨建筑大学学报,2000,33(3):18-22.
    [10]阎维明,周福霖,谭平.土木工程结构振动控制的研究进展[J].世界地震工程,1997,13(2):8-20.
    [11]李媛萍,张卫.粘弹性阻尼器减震系统对单层球面网壳动力稳定性的影响分析[J].建筑结构,2010,40(1):47-49.
    [12]沈世钊,陈昕.网壳结构稳定性[M].北京:科学出版社,1999:80-82.
    [13]范峰,沈世钊.网壳结构的粘弹阻尼器减震分析[J].地震工程与工程震动,2003,23(3):156-159.
    [14]常业军,苏毅,吴曙光,等.圆筒式粘弹性阻尼器的试验研究及工程应用[J].震动与冲击,2007,26(12):63-67.