设置VED-KBF的不规则钢框架抗震性能研究
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摘要
近年来,随着国民经济的迅速发展,城市化进程的不断提高,高层建筑结构不断涌现,且其结构形式和规模不断变化,设计研究方法也取得了长足的进步。由于建设场地条件的限制,以及使用功能的需要,使得建筑的平面和竖向布置日益复杂,在结构适当部位加设阻尼器的减震方法是近年来出现的一种新型的消能减震结构形式。本文正是在隅撑支撑斜撑上设置粘弹性阻尼器(VED),针对不规则钢框架结构的抗震性能进行消能减震分析研究。
本文结合现行抗震设计规范和目前国内外的研究成果,分析粘弹性阻尼器的力学性能和恢复力模型;并讨论消能支撑体系的计算模型和性能特点。在此基础上,以某12层不规则高层钢框架结构为研究对象,运用SAP2000有限元软件,分别建立了纯框架结构模型,以及设置三种不同型式的粘弹性阻尼器隅撑支撑钢框架结构模型。并选取EL Centro、Tafa和人工波三种地震波,对四个模型进行模态分析和多遇、罕遇地震下的非线性时程分析。通过计算结果的对比分析,讨论粘弹性阻尼器隅撑支撑对不规则钢框架抗震性能的作用,并进一步研究不同型式的粘弹性阻尼器隅撑支撑在结构抗震中的特点,为不规则钢结构粘弹性阻尼器隅撑支撑的设计提供思路和理论参考。
In recent years, with the rapid development of the national economy, the continuous improvement of the process of urbanization, emergence of tall building structures, and their structure and size changing, design research methods have also made great progress. Due to the restrictions on construction site conditions, and the need to use features, making increasingly complex plane and the vertical arrangement of the building, to structure appropriate parts add damping method of damper is emerging in recent years a new form of energy dissipation structures. This article is set on the bracket support with braces visco-elastic damper (VED), for seismic performance of steel frame structures with irregular conduct analysis and research on energy dissipation.
Code for seismic design of this article combined with existing and current domestic and foreign research results, analyses of mechanical properties of visco-elastic damper and hysteretic model and discussion supporting system of calculation of energy dissipation models and performance characteristics. A 12-story irregular steel frame as the research object, SAP2000 finite element software, respectively, established a pure frame structure model, and set three different type of visco-elastic damper bracket braced steel frame structure model.And selects EL Centro, Tafa and the artificial wave three farm seismic waves, carries on the modality analysis, the structure dynamic performance to four models as well as meets, meets under the earthquake rarely the non-linear time interval analysis.Through the computed result contrast analysis, the discussion viscoelasticity attenuator knee brace support to the irregular steel frame earthquake resistance performance function, and further studies the different pattern the viscoelasticity attenuator knee brace support in the structure earthquake resistance characteristic, provides the mentality and the theory reference for the irregular steel structure viscoelasticity attenuator knee brace support design.
本文结合现行抗震设计规范和目前国内外的研究成果,分析粘弹性阻尼器的力学性能和恢复力模型;并讨论消能支撑体系的计算模型和性能特点。在此基础上,以某12层不规则高层钢框架结构为研究对象,运用SAP2000有限元软件,分别建立了纯框架结构模型,以及设置三种不同型式的粘弹性阻尼器隅撑支撑钢框架结构模型。并选取EL Centro、Tafa和人工波三种地震波,对四个模型进行模态分析和多遇、罕遇地震下的非线性时程分析。通过计算结果的对比分析,讨论粘弹性阻尼器隅撑支撑对不规则钢框架抗震性能的作用,并进一步研究不同型式的粘弹性阻尼器隅撑支撑在结构抗震中的特点,为不规则钢结构粘弹性阻尼器隅撑支撑的设计提供思路和理论参考。
In recent years, with the rapid development of the national economy, the continuous improvement of the process of urbanization, emergence of tall building structures, and their structure and size changing, design research methods have also made great progress. Due to the restrictions on construction site conditions, and the need to use features, making increasingly complex plane and the vertical arrangement of the building, to structure appropriate parts add damping method of damper is emerging in recent years a new form of energy dissipation structures. This article is set on the bracket support with braces visco-elastic damper (VED), for seismic performance of steel frame structures with irregular conduct analysis and research on energy dissipation.
Code for seismic design of this article combined with existing and current domestic and foreign research results, analyses of mechanical properties of visco-elastic damper and hysteretic model and discussion supporting system of calculation of energy dissipation models and performance characteristics. A 12-story irregular steel frame as the research object, SAP2000 finite element software, respectively, established a pure frame structure model, and set three different type of visco-elastic damper bracket braced steel frame structure model.And selects EL Centro, Tafa and the artificial wave three farm seismic waves, carries on the modality analysis, the structure dynamic performance to four models as well as meets, meets under the earthquake rarely the non-linear time interval analysis.Through the computed result contrast analysis, the discussion viscoelasticity attenuator knee brace support to the irregular steel frame earthquake resistance performance function, and further studies the different pattern the viscoelasticity attenuator knee brace support in the structure earthquake resistance characteristic, provides the mentality and the theory reference for the irregular steel structure viscoelasticity attenuator knee brace support design.
引文
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[4] Mahmoodi P,Robetson L E,performance of viscoelastic dampers in word Trade Center Building[A].Building Motion in Wind[C].[s. 1.]:ASCE,1986,83-106
[5]张琴.粘弹性阻尼器控制结构地震响应的设计方法[D].浙江:浙江大学,2003
[6] C D Johnson,D A Keinholz,Finite element prediction of damping in structures with constrained viscoelastic layers,AIAA,1982 ,20(9):1284-1290
[7] R L Bagely, P J Torvik, Fractional calculus-a different approach to the analysis of viscelastically damped structures,AIAA,1983,21(5):741-748
[8] K Kasai,J A Munshi M L,B F Masion,Viscoelastic damper hysteretic model: theory, experiment and application,Proc. ATC-17-1 on Seismic Isolation, Energy Dissipation, and Active Control:521-532
[9] P.Mahmoodi,Structural dampers, Journal of Structural Engineering ASCE,1995,95(8):1661-1672
[10] R C Lin, Z Liang,T T Soong,R.H.Zhang. An experiment study of seismic structural response with added viscoelastic dampers, Engineering Structures,1991,13(1):75-84;
[11] P Mahmoodi,C J Keel,Method of damped energy calculation for a multi-layer viscoelastic Damper. Wind Engng Indust. Aerodyn,1990,36:749-756
[12] K C Chang,T T Soong,S-T Oh,M L Lai,Effect of ambient temperature on viscelastically damped structure. Journal of Structures Engineering ASCE,1992,118(7):1953-1973;
[13] D M Bergman,R D Hanson. viscoelastic mechanical damping devices tested at real earthquake displacements. Earthquake Spectra ,1993,9(3):389-418
[14] K C Chang,T T Soong,M L Lai,E J Nielsen. viscoelastic dampers as energy dissipation devices for seismic application. Earthquake Spectra,1993,9(3):371-388
[15] H. Abbas,J M Kelly. A method for design of viscoelastic dampers in earthquake-resistant structures, Report UCB/ERRC-93/09, Earthquake Engineering Research Center, Universityof California,Berkeley,1993
[16] J A Inaudi,A Zambrano,J M Kelly. On the analysis of structures with viscoelastic dampers, Report UCB/EERC-93/06, Earthquake Engineering Research Center, University of California,Berkeley,1993
[17] K. C Chang,T T Soong,M. L. Lai,E J Nielsen. Development of a design procedure for structures with added viscoelastic dampers. ATC-17-1 Seminar, San Francisco,CA,1993, 473-484
[18] Ashour,S A.,Hanson,R D. Elastic Seismic Response of Buildings with Supplemental Damping. Report No.UMCE87-1, Department of Civil Engineering, The university of Michigan.1987
[19]周云,邓雪松,汤统壁等.中国(大陆)耗能减震技术理论研究、应用的回顾与前瞻[J].工程抗震与加固改造,2006,28(6):1-15
[20]吴曙光,常业军.粘弹性消能减震结构设计参数研究[J].工程抗震与加固改造,2005,27(4):37-39
[21]唐柏鉴,杨德健.粘弹性阻尼器耗能支撑极限承载力的复核[J].天津城市建设学院学报, 2005,11(4):242-245
[22]杨扬,卢坤林,郝际平等.设置粘弹性阻尼器的偏心支撑结构性能研究[J].工业建筑,2007,37(增):287-291
[23]欧进萍,吴斌,龙旭.结构被动耗能减振效果的参数影响[J].地震工程与工程振动,1998,18(1):60-70
[24]闫祥梅,罗晓滨.粘弹性消能支撑的实验研究[J].兰州理工大学学报,2008,34(5):127-130
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