单层网壳结构的阻尼减振控制分析
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摘要
对凯威特型单层球面网壳结构进行了削弱杆件刚度、附加阻尼器杆件的减振控制研究。削弱部分原有杆件的刚度后,附加阻尼减振杆件。根据阻尼杆件的力学特性,在ANSYS软件中建立附加阻尼杆件的数值计算模型,根据阻尼杆件的不同位置进行结构建模及动力分析,主要考察阻尼杆件的布置位置对网壳结构减振效果的影响,以附加斜杆和附加环杆两种方式为例进行了网壳减振结构地震作用分析。研究结果表明:阻尼杆件的布置位置对网壳结构的减振控制效果有非常重要的影响,通过合理削弱原有杆件刚度并设置附加阻尼杆件,可以使网壳结构的位移、加速度和杆件内力等动力反应有较大的降低。
The vibration control of single-layer Kiewitt lattice spherical shell with attached bar-type dampers is studied in this paper.Firstly,according to the mechanical properties of the bar-type dampers and the weakening bars in the shell,computational models of several lattice shells with the dampers are established by using ANSYS software.Secondly,the influences of arranging position of the dampers on the effectiveness of the vibration control are investigated based on the dynamic analysis of the shells.Finally,a frequent seismic analysis of the lattice shell with attached bar-type dampers is conducted.The analysed results are shown that the arranging position of the dampers has significant influence on the effectiveness of the vibration control and that the dynamic responses of the lattice shells can be reduced greatly by a reasonable arrangement of the dampers and the weakening bars of the shell.
The vibration control of single-layer Kiewitt lattice spherical shell with attached bar-type dampers is studied in this paper.Firstly,according to the mechanical properties of the bar-type dampers and the weakening bars in the shell,computational models of several lattice shells with the dampers are established by using ANSYS software.Secondly,the influences of arranging position of the dampers on the effectiveness of the vibration control are investigated based on the dynamic analysis of the shells.Finally,a frequent seismic analysis of the lattice shell with attached bar-type dampers is conducted.The analysed results are shown that the arranging position of the dampers has significant influence on the effectiveness of the vibration control and that the dynamic responses of the lattice shells can be reduced greatly by a reasonable arrangement of the dampers and the weakening bars of the shell.
引文
[1]曹资,薛素铎.空间结构抗震理论与设计[M].北京:科学出版社,2005:331-369.
[2]Saka T,Taniguchi Y.Damage to spatial structures by the 1995 Hyogoken-Nanbu Earthquake in Japan[J].International Journal of Space Struc-tures,1997,12(3/4):125-133.
[3]全希坤,李宏男,曹勇.减震控制技术在大跨空间网壳结构中的研究与发展[J].沈阳建筑大学学报,2006,22(5):745-749.
[4]徐赵东,李爱群,叶继红.大跨空间网壳结构减震控制的研究与发展[J].振动与冲击,2005,24(3):59-61.
[5]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.
[6]叶继红,陈月明,沈世钊.TMD减震系统在网壳结构中的应用[J].哈尔滨建筑大学学报,2000,33(5):10-14.
[7]Zhang Y G,Ren G Z.A practical method on seismic response controlled double layer cylindrical lattice shell with variable stiffness members[C]//IASS Symposium2001,Nagoya,TP122.
[8]杨飏,李友明.双层球面网壳结构的阻尼替代杆件减振控制研究[J].工程力学,2009,(待发表).
[9]梁海彤,吴金志,张毅刚.替换阻尼杆件的双层柱面网壳被动控制振动台试验研究[J].地震工程与工程振动,2003,23(4):178-182.
[10]秦乃兵,张毅刚,茹洋.采用新型阻尼杆的双层柱面网壳结构减震分析与试验研究[J].建筑结构学报,2005,26(6):108-113.
[2]Saka T,Taniguchi Y.Damage to spatial structures by the 1995 Hyogoken-Nanbu Earthquake in Japan[J].International Journal of Space Struc-tures,1997,12(3/4):125-133.
[3]全希坤,李宏男,曹勇.减震控制技术在大跨空间网壳结构中的研究与发展[J].沈阳建筑大学学报,2006,22(5):745-749.
[4]徐赵东,李爱群,叶继红.大跨空间网壳结构减震控制的研究与发展[J].振动与冲击,2005,24(3):59-61.
[5]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.
[6]叶继红,陈月明,沈世钊.TMD减震系统在网壳结构中的应用[J].哈尔滨建筑大学学报,2000,33(5):10-14.
[7]Zhang Y G,Ren G Z.A practical method on seismic response controlled double layer cylindrical lattice shell with variable stiffness members[C]//IASS Symposium2001,Nagoya,TP122.
[8]杨飏,李友明.双层球面网壳结构的阻尼替代杆件减振控制研究[J].工程力学,2009,(待发表).
[9]梁海彤,吴金志,张毅刚.替换阻尼杆件的双层柱面网壳被动控制振动台试验研究[J].地震工程与工程振动,2003,23(4):178-182.
[10]秦乃兵,张毅刚,茹洋.采用新型阻尼杆的双层柱面网壳结构减震分析与试验研究[J].建筑结构学报,2005,26(6):108-113.
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