土-结构动力相互作用对结构控制的影响
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摘要
本文研究了土-结构动力相互作用对采取不同控制措施的结构控制效果的影响。文中首先建立了主动调谐质量阻尼器(ATMD)、半主动磁流变阻尼器(MR)和被动多重调谐质量阻尼器(MTMD)等三种结构控制措施在时域中的控制算法和控制律,然后基于子结构法,采用间接边界元方法,通过傅里叶变换,推导了分别安装三种结构控制措施的受控结构在频域中的运动方程,数值仿真分析了某36层高层建筑的地震反应及其控制效果。结果表明,当采用ATMD或MTMD控制时,考虑土-结构动力相互作用后结构地震反应有所减小;当采用MR控制时,考虑土-结构动力相互作用后结构地震反应有很大程度的减小。由此看来,在设计软土地基上高层结构的结构控制措施时,不考虑土-结构动力相互作用对结构控制效果的影响是偏于安全的。
The influence of the soil-structure dynamic interaction on the effect of structural control with different control measures is investigated. The control algorithms and laws in time domain of three kinds of structure control measures, including the active tuned mass damper (ATMD), the semi-active magnetorheological damper (MR) and the passive multiple tuned mass damper (MTMD), are established, and the equations of motion in frequency domain of the controlled structure,in which three kinds of control measures are adopted respectively are derived through the Fourier transformation, using the indirect boundary element method and based on the substructure method. The seismic responses and its control effects of a 36-story frame structure are numerically simulated and the results show that in the case of considering the soil-structure interaction, the seismic responses of the structure are slightly reduced when the ATMD or MTMD control is adopted, but remarkably decreased when the MR control is used. A conclusion is drawn that it is necessary to take soil-structure dynamic interaction into account when designing the structural control measures for tall buildings on soft soil.
The influence of the soil-structure dynamic interaction on the effect of structural control with different control measures is investigated. The control algorithms and laws in time domain of three kinds of structure control measures, including the active tuned mass damper (ATMD), the semi-active magnetorheological damper (MR) and the passive multiple tuned mass damper (MTMD), are established, and the equations of motion in frequency domain of the controlled structure,in which three kinds of control measures are adopted respectively are derived through the Fourier transformation, using the indirect boundary element method and based on the substructure method. The seismic responses and its control effects of a 36-story frame structure are numerically simulated and the results show that in the case of considering the soil-structure interaction, the seismic responses of the structure are slightly reduced when the ATMD or MTMD control is adopted, but remarkably decreased when the MR control is used. A conclusion is drawn that it is necessary to take soil-structure dynamic interaction into account when designing the structural control measures for tall buildings on soft soil.
引文
[1]SmithHD,WuWH,BorjaRI.Structuralcontrolconsideringsoil structureinteractioneffects[J].EarthquakeEngineeringandStructuralDy namics,1994,23:609～626.
[2]欧进萍.结构振动控制-主动、半主动和智能控制[M].北京:科学出版社,2003.
[3]李忠献,李延涛,王健.土-结构动力相互作用对基础隔震的影响[J].地震工程与工程振动,2003,23(5):180～186.
[4]WolfJP,DarbreGR.Dynamicstiffnessmatrixofsoilbytheboundaryelementmethod:conceptualaspects[J].EarthquakeEngineeringand StructuralDynamics,1984,12(3):355～400.
[5]SmithHA,WuWH.Effectiveoptimalstructuralcontrolofsoil structureinteractionsystem[J].EarthquakeEngineeringandStructuralDynam ics,1997,26(5):549～570.
[6]MYazdchi,NKhalili.Dynamicsoil structureinteractionanalysisviacoupledfinite-element-boundry-elementmethod[J].EarthquakeEn gineeringandStructuralDynamics,1999,18(7):499～517.
[7]李忠献,徐龙河,姜南,等.基于MRF-04K阻尼器的结构减震控制模型试验研究[J].地震工程与工程振动,2004,24(1):148～153.
[8]DykeSJ,SpencerBF,MKSain,etal.Modelingandcontrolofmagnetorheologicaldampersforseismicresponsereduction[J].SmartMaterials&Structures,19965(5):565～575.
[9]李忠献,张伟.高层建筑地震反应全反馈主动TMD控制理论研究[J].地震工程与工程振动,1997,17(3):60-65.
[10]李忠献,王森林.高层建筑地震反应最优多重TLD控制[J].地震工程与工程振动,1996.16(4):69～77.
[2]欧进萍.结构振动控制-主动、半主动和智能控制[M].北京:科学出版社,2003.
[3]李忠献,李延涛,王健.土-结构动力相互作用对基础隔震的影响[J].地震工程与工程振动,2003,23(5):180～186.
[4]WolfJP,DarbreGR.Dynamicstiffnessmatrixofsoilbytheboundaryelementmethod:conceptualaspects[J].EarthquakeEngineeringand StructuralDynamics,1984,12(3):355～400.
[5]SmithHA,WuWH.Effectiveoptimalstructuralcontrolofsoil structureinteractionsystem[J].EarthquakeEngineeringandStructuralDynam ics,1997,26(5):549～570.
[6]MYazdchi,NKhalili.Dynamicsoil structureinteractionanalysisviacoupledfinite-element-boundry-elementmethod[J].EarthquakeEn gineeringandStructuralDynamics,1999,18(7):499～517.
[7]李忠献,徐龙河,姜南,等.基于MRF-04K阻尼器的结构减震控制模型试验研究[J].地震工程与工程振动,2004,24(1):148～153.
[8]DykeSJ,SpencerBF,MKSain,etal.Modelingandcontrolofmagnetorheologicaldampersforseismicresponsereduction[J].SmartMaterials&Structures,19965(5):565～575.
[9]李忠献,张伟.高层建筑地震反应全反馈主动TMD控制理论研究[J].地震工程与工程振动,1997,17(3):60-65.
[10]李忠献,王森林.高层建筑地震反应最优多重TLD控制[J].地震工程与工程振动,1996.16(4):69～77.
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