转动PTMD对框架结构弹塑性地震反应控制效果分析
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摘要
本文系统介绍了当前国际结构振动控制的公共平台——Benchmar模型,给出使用通用有限元软件ANSYS对第3阶段9层非线性钢框架抗震结构的有限元建模,结果表明,模态、无控地震反应分析结果和ASCE给出的MATLAB结果相同。利用转动PTMD对此模型的耗能减振数值仿真分析的结果表明:转动PTMD是一种性能很好的阻尼器系统,使用本文给出ANSYS的Benchmark有限元模型来进行耗能减振控制分析是方便的、可行的。
本文同时结合我国现行规范和国内外相关研究成果,通过系统的理论分析和数值计算证明了转动PTMD可行性和有效性。在总结前人非线性有限元分析理论的基础上,借助于大型有限元分析程序ANSYS,对地震荷载作用下框架的反应进行计算机仿真模拟。在模拟过程中,钢材采用Von-Mises屈服条件和等向强化本构关系。
其中本文主要内容包括以下几个方面:1.钢框架的有限元程序验证。用ANSYS有限元程序分析了钢框架,并与文献进行了对比,结果表明用此程序分析钢框架是可行的。2.钢框架的非线性分析。通过Benchmark中九层非线性钢结构,分析了转动PTMD与原结构的质量比、阻尼比以及PTMD的频率等参数的变化对结构地震反应的影响,并给出了Benchmark评估标准。分析结果表明转动PTMD对高层结构地震反应的控制是有效的。
Benchmark control problem is to provide a clear basis to evaluate the efficacy of various structural strategies. In this paper, the 9-story steel frame of the nonlinear benchmark was selected as an analysis model. The finite element model about the same benchmark model was created using the ANSYS software. The model analysis and the seismic nonlinear analysis of this benchmark model were done. In the end, the numerical results of the benchmark model controlled with Rotational Passive Tuned Mass Damper indicate that the Rotational Passive Tuned Mass Damper is a good dissipation device and the analysis of structural dissipation control using ANSYS is convenient.
Based on current design codes of our country and domestic and overseas relative research achievements, the practicability and effectiveness of the rotational PTMD are approved through systematical theoretic modeling and numerical computation. Computer simulations on steel frames under Earthquake loading have been performed via ANSYS—a great finite element analysis program—on the basis of non-linear finite element analysis theory. In the procession of the simulation, Von-Mises yield criterion and bilinear isotropic hardening stress-strain relationship have been used for steel bar.
The main contents of this dissertation are listed as follows: First, the finite element program of analysing the steel frames was verified. The author analyzed the steel frame by the finite element program of ANSYS and compared with documentation, the result showed that analyzing steel frames by using the program is feasible. Second, the nonlinear analysis is made on the steel frames. Base on the 9-story steel frame of the nonlinear benchmark, the effects of the rotational PTMD varying parameters, such as mass ratio, damping ratio, frequency of PTMD, on earthquake responses are discussed. The evaluation criterion for benchmark problem is given and numerical results show that rotational PTMD can control the earthquake responses efficiently.
本文同时结合我国现行规范和国内外相关研究成果,通过系统的理论分析和数值计算证明了转动PTMD可行性和有效性。在总结前人非线性有限元分析理论的基础上,借助于大型有限元分析程序ANSYS,对地震荷载作用下框架的反应进行计算机仿真模拟。在模拟过程中,钢材采用Von-Mises屈服条件和等向强化本构关系。
其中本文主要内容包括以下几个方面:1.钢框架的有限元程序验证。用ANSYS有限元程序分析了钢框架,并与文献进行了对比,结果表明用此程序分析钢框架是可行的。2.钢框架的非线性分析。通过Benchmark中九层非线性钢结构,分析了转动PTMD与原结构的质量比、阻尼比以及PTMD的频率等参数的变化对结构地震反应的影响,并给出了Benchmark评估标准。分析结果表明转动PTMD对高层结构地震反应的控制是有效的。
Benchmark control problem is to provide a clear basis to evaluate the efficacy of various structural strategies. In this paper, the 9-story steel frame of the nonlinear benchmark was selected as an analysis model. The finite element model about the same benchmark model was created using the ANSYS software. The model analysis and the seismic nonlinear analysis of this benchmark model were done. In the end, the numerical results of the benchmark model controlled with Rotational Passive Tuned Mass Damper indicate that the Rotational Passive Tuned Mass Damper is a good dissipation device and the analysis of structural dissipation control using ANSYS is convenient.
Based on current design codes of our country and domestic and overseas relative research achievements, the practicability and effectiveness of the rotational PTMD are approved through systematical theoretic modeling and numerical computation. Computer simulations on steel frames under Earthquake loading have been performed via ANSYS—a great finite element analysis program—on the basis of non-linear finite element analysis theory. In the procession of the simulation, Von-Mises yield criterion and bilinear isotropic hardening stress-strain relationship have been used for steel bar.
The main contents of this dissertation are listed as follows: First, the finite element program of analysing the steel frames was verified. The author analyzed the steel frame by the finite element program of ANSYS and compared with documentation, the result showed that analyzing steel frames by using the program is feasible. Second, the nonlinear analysis is made on the steel frames. Base on the 9-story steel frame of the nonlinear benchmark, the effects of the rotational PTMD varying parameters, such as mass ratio, damping ratio, frequency of PTMD, on earthquake responses are discussed. The evaluation criterion for benchmark problem is given and numerical results show that rotational PTMD can control the earthquake responses efficiently.
引文
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[6]Ghaboussi J,Joghataie A.Active control of structures using neural nefworks.J Engng Mech,ASCE,1995,12(4):555-567.
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[10]欧进萍.结构振动控制—主动、半主动和智能控制[J].北京:科学出版社,2003
[11]Kelly J.M.A seismic base isolation:Reviewand Bibliography.Jsoil Dyn Earthquake Engrg,A SCE,1986,5(3):202-116
[12]李中锡,周锡元.规则型隔震房屋的自振特性和地震反应分析方法[J]地震工程与工程振动,2002,(02).[13]Green NB,Flexible first-story construction for earthquake resistance[J].ASCE,1935,100:645-674
[14]A.Otsukatec,Development and verification of active/passive mass damper,First World Conference on Structural Control,LosAngeles,California,USA,1994.8
[15]孙飞飞等.中日建筑结构技术发展的最新动态,建筑结构学报,1996(2)
[16]王光远.高耸结构风振的控制,石油建筑设计,NO.1,1981
[17]瞿伟廉等.高耸结构的模糊随机风振反应的振型控制分析,上海力学,VOL.9NO.111998
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[19]周福霖.隔震消能减震和结构控制技术的发展和应用(上、下),世界地震工程,1989(4),1990(1)
[20]梁殿君.非线性TMD应用于超高层建筑的减震研究[D].西安理工大学,2006
[21]李宏男.高层建筑利用悬吊质量摆的减震研究,地震工程与工程振动,No.4,1995
[22]阎维明等.土木工程结构振动控制的研究进展,世界地震工程,1997年13卷第2期
[23]刘文峰.结构控制技术及最新发展,世界地震工程,1997年13卷第3期
[24]Wong H L,Luco J E.Structural control including soil-structure interaction Effects.J Engrg Mech,1991,117(10):2237-2250.
[25]T.T.Soong and C.F.Dargush,Passive Energy Dissipation System sin Structural Engineering, John Wiley
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[27]李爱群,蔡丹绎等.调谐液体阻尼器的振动试验及等效力学模型研究,东南大学学报,1997年
[28]瞿伟廉,李爱群等.自动加固的ER智能抗震结构体系的研究,东南大学学报,No.6,1998
[29]韩玉林,李爱群,林萍华,张志强.基于形状记忆合金的结构振动控制研究和展望,东南大学学报,No.1,2000
[30]SoongTT,ReinhomAM,WangYP,LinRC.Full scale implementation of active control,Part1:System design and simulation results[J].Journal of Structural Engineering ASCE1991,117(11):3516-3536.
[31]Reinhorn AM,Soong TT,RileyMA,LinRC,AizawaS,HigashihoM.Full scale implement action of active control,Part11:install action and performance[J].Journal of Structural EngineeringASCE 1993,199(11):2317-2332.
[32]Yang JN,Kim JH,Agrawal AK.Resetting semi-active stiffness damper for seismic response control[J].Journal of Structural Engineering ASCE2000,126(12):1427-143
[33]Sladek JR,Klingner RE.Effect of tuned-mass dampers on seismic,Journal of Structural Division[J].ASCE 1981,107(8):1465-1484
[34]Kelly J M,Skinner R I,and Heine AJ.Mechanisms ofEnergy Absorption in Special Devices for Use inEarthquake Resistant Structures[J].Bull.N.Z.Soc.Earthquake Engrg,1972,5(3):63-88.
[35]P.Lukkunaprasit and A.Wanitkorkul.Inelastic buildings with tuned mass dampers under moderate ground motions from distant earthquakes[J].Earthquake engineering and structural dynamics.2001,30:537-551
[36]Genda Chen,Jingning Wu.Experimental study on multiple tuned mass dampers to reduce seismic responses of a three-storey building structure[J].Earthquake engineering and structural dynamics 2003,32:793-810.
[37]T.Pinkaew,P.Lukkunaprasit,P.Chatupote.Seismic effectiveness of tuned mass dampers for damage reduction of structures[J].Engineering Structures 2003,25:39-46
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