铅挤压阻尼器对网壳结构的减振控制
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摘要
将具有良好耗能特性的铅挤压阻尼器加设到大跨空间网壳结构中,通过LS-DYNA软件对结构进行了减振效果分析.以施威德勒球壳为例,分析了铅挤压阻尼器不同布置位置对大跨空间网壳结构减振效果的影响,其中阻尼器的布置分别为交叉支撑布置、斜撑布置和混合支撑布置,综合分析表明,在混合支撑布置铅挤压阻尼器的条件下,铅挤压阻尼器减振系统的减振效果最佳,结构顶点位移被降低60.0%.同样在混合支撑布置铅挤压阻尼器的条件下,通过使用IDA的分析方法研究了该减振系统对大跨空间网壳结构倒塌临界荷载的影响,结果表明结构整体倒塌临界荷载提高了0.33倍.
The vibration control of long-span space reticulated shell structure incorporated with lead extrusion dampers with excellent energy dissipation was studied.The mathematic models on the structure with the dampers were established by using LS-DYNA software.Based on the dynamic analysis of the Schwedler reticulated shell structure,the influences of different damper arrangements on the effectiveness of the vibration control were investigated.The layouts of the dampers were the cross bracing arrangement,inclined bracing arrangement and mixed bracing arrangement,respectively.Comprehensive analysis results show that the vibration control effect of the lead extrusion damper system is optimal under the mixed bracing arrangement,and the vertex displacement response is reduced by 60.0%.Meanwhile,the influences on collapsed critical loads of the long-span space reticulated shell structure are also studied by IDA analysis under the mixed bracing arrangement of the lead extrusion dampers.The results show that the collapsed critical load increases 0.33 times compared to that without dampers.
The vibration control of long-span space reticulated shell structure incorporated with lead extrusion dampers with excellent energy dissipation was studied.The mathematic models on the structure with the dampers were established by using LS-DYNA software.Based on the dynamic analysis of the Schwedler reticulated shell structure,the influences of different damper arrangements on the effectiveness of the vibration control were investigated.The layouts of the dampers were the cross bracing arrangement,inclined bracing arrangement and mixed bracing arrangement,respectively.Comprehensive analysis results show that the vibration control effect of the lead extrusion damper system is optimal under the mixed bracing arrangement,and the vertex displacement response is reduced by 60.0%.Meanwhile,the influences on collapsed critical loads of the long-span space reticulated shell structure are also studied by IDA analysis under the mixed bracing arrangement of the lead extrusion dampers.The results show that the collapsed critical load increases 0.33 times compared to that without dampers.
引文
[1]Bel Hadj Ali N,Smith I.Dynamic behavior and vibra-tion control of a tensegrity structure[J].International Journal of Solids and Structures,2010,47(9):1285-1296.
[2]Aida T,Aso T.Vibration control of shallow shell struc-tures using a shell-type dynamic vibration absorber[J].Journal of Sound and Vibration,1998,218(2):245-267.
[3]瞿伟廉,徐幼麟.ER/MR智能阻尼器对空间网壳结构地震反应的半主动控制[J].地震工程与工程振动,2001,21(4):24-31.Qu Weilian,Xu Youlin.Semi-active control for earth-quake responses of reticulated shells with ER/MR smart dampers[J].Earthquake Engineering and Engineering Vibration,2001,21(4):24-31.(in Chinese)
[4]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.Gao Boqing,Dong Shilin.Study on a seismic and shock absorption of folded plate latticed shell[J].Jour-nal of Zhejiang University:Science Edition,2002,29(5):589-594.(in Chinese)
[5]范峰,沈世钊.网壳结构的粘弹阻尼器减振分析[J].地震工程与工程振动,2003,23(3):156-159.Fan Feng,Shen Shizhao.Vibration reducing analysis and experimental study of viscous damper on reticulated shells[J].Earthquake Engineering and Engineering Vibration,2003,23(3):156-159.(in Chinese)
[6]沈世钊.大跨空间结构理论研究和工程实践[J].中国工程科学,2001,3(3):34-41.Shen Shizhao.Theoretical study and engineering practice of long-span spatial structures[J].Engineering Science,2001,3(3):34-41.(in Chinese)
[7]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.Xu Zhaodong,Li Aiqun,Ye Jihong.Study and development on earthquake mitigation control of long-span spatial reticulated shell structure[J].Journal of Vibration and Shock,2005,24(3):59-61.(in Chinese)
[8]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.Ye Jihong,Chen Yueming,Shen Shizhao.The present situation of seismic vibration control of reticulated shell structures using TMD system[J].Journal of Harbin University of Civil Engineering and Architecture,2000,33(5):10-14.(in Chinese)
[9]全希坤,李宏男,曹勇,等.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:自然科学版,2006,22(5):745-748.Quan Xikun,Li Hongnan,Cao Yong,et al.Study and development of earthquake mitigation control of longSpan spatial reticulated shell structure[J].Journal of Shenyang Jianzhu University:Natural Science,2006,22(5):745-748.(in Chinese)
[10]Robinson W H,Greenbank L R.An extrusion energy absorber suitable for the protection of structures during an earthquake[J].Earthquake Engineering and Structural Dynamics,1976,4(3):251-259.
[11]杨军.铅挤压阻尼器的研究[J].华中科技大学学报:自然科学版,2006,34(6):115-117.Yang Jun.Study of lead extrusion damper[J].Journal of Huazhong University of Science and Technology:Nature Science,2006,34(6):115-117.(in Chinese)
[12]Asgarian Behrouz,Sadrinezhad Arezoo.Seismic per-formance evaluation of steel moment resisting frames through incremental dynamic analysis[J].Journal of Constructional Steel Research,2010,66(2):178-190.
[13]Zarfam Panam,Mofid Massood.Evaluation of modal incremental dynamic analysis,using input energy in-tensity and modified bilinear curve[J].Structural De-sign of Tall and Special Buildings,2009,18(5):573-586.
[14]Samuel Tan.Cable-based retrofit of steel building floors to prevent progressive collapse[D].Berkeley,USA:University of California in Berkeley,2003.
[2]Aida T,Aso T.Vibration control of shallow shell struc-tures using a shell-type dynamic vibration absorber[J].Journal of Sound and Vibration,1998,218(2):245-267.
[3]瞿伟廉,徐幼麟.ER/MR智能阻尼器对空间网壳结构地震反应的半主动控制[J].地震工程与工程振动,2001,21(4):24-31.Qu Weilian,Xu Youlin.Semi-active control for earth-quake responses of reticulated shells with ER/MR smart dampers[J].Earthquake Engineering and Engineering Vibration,2001,21(4):24-31.(in Chinese)
[4]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.Gao Boqing,Dong Shilin.Study on a seismic and shock absorption of folded plate latticed shell[J].Jour-nal of Zhejiang University:Science Edition,2002,29(5):589-594.(in Chinese)
[5]范峰,沈世钊.网壳结构的粘弹阻尼器减振分析[J].地震工程与工程振动,2003,23(3):156-159.Fan Feng,Shen Shizhao.Vibration reducing analysis and experimental study of viscous damper on reticulated shells[J].Earthquake Engineering and Engineering Vibration,2003,23(3):156-159.(in Chinese)
[6]沈世钊.大跨空间结构理论研究和工程实践[J].中国工程科学,2001,3(3):34-41.Shen Shizhao.Theoretical study and engineering practice of long-span spatial structures[J].Engineering Science,2001,3(3):34-41.(in Chinese)
[7]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.Xu Zhaodong,Li Aiqun,Ye Jihong.Study and development on earthquake mitigation control of long-span spatial reticulated shell structure[J].Journal of Vibration and Shock,2005,24(3):59-61.(in Chinese)
[8]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.Ye Jihong,Chen Yueming,Shen Shizhao.The present situation of seismic vibration control of reticulated shell structures using TMD system[J].Journal of Harbin University of Civil Engineering and Architecture,2000,33(5):10-14.(in Chinese)
[9]全希坤,李宏男,曹勇,等.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:自然科学版,2006,22(5):745-748.Quan Xikun,Li Hongnan,Cao Yong,et al.Study and development of earthquake mitigation control of longSpan spatial reticulated shell structure[J].Journal of Shenyang Jianzhu University:Natural Science,2006,22(5):745-748.(in Chinese)
[10]Robinson W H,Greenbank L R.An extrusion energy absorber suitable for the protection of structures during an earthquake[J].Earthquake Engineering and Structural Dynamics,1976,4(3):251-259.
[11]杨军.铅挤压阻尼器的研究[J].华中科技大学学报:自然科学版,2006,34(6):115-117.Yang Jun.Study of lead extrusion damper[J].Journal of Huazhong University of Science and Technology:Nature Science,2006,34(6):115-117.(in Chinese)
[12]Asgarian Behrouz,Sadrinezhad Arezoo.Seismic per-formance evaluation of steel moment resisting frames through incremental dynamic analysis[J].Journal of Constructional Steel Research,2010,66(2):178-190.
[13]Zarfam Panam,Mofid Massood.Evaluation of modal incremental dynamic analysis,using input energy in-tensity and modified bilinear curve[J].Structural De-sign of Tall and Special Buildings,2009,18(5):573-586.
[14]Samuel Tan.Cable-based retrofit of steel building floors to prevent progressive collapse[D].Berkeley,USA:University of California in Berkeley,2003.
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