脉动风载下巨子式新型结构承载方案研究
|
摘要
提出巨子式新型结构在抵抗风荷载作用时存在2种承载方案:①风力仅由巨结构承担;②由巨-子结构共同承担。对比研究了脉动风作用时2种承载方案下的新型结构的动力响应谱。研究了不同承载(风载)方案时,子结构刚度对新型结构动力响应的影响规律,并分析了2种承载方案下新型结构动态特性上的异同点。研究结果表明:巨子式新型结构采用巨-子结构共同承担风载方案时,比单纯依靠巨结构承受风载具有更好的控制效果;2种承载方案下,子结构刚度对巨子式新型结构动态特性影响规律一致。
Aim.Two schemes we compare are: scheme A,only mega-structure resists pulsating wind loading;scheme B,both mega and sub structures resist it.To our knowledge,there is no paper in the open literature that considers scheme B.In the full paper,we explain in some detail our comparison and the analysis of a numerical example;in this abstract,we just add some pertinent remarks to listing the three topics of explanation.The first topic is: dynamical equations.In the first topic,our small contribution is eqs.(3) through(6) in the full paper.The second topic is: the method of dynamical analysis.The third topic is: the analysis of a numerical example.In the third topic,we present our calculation results in Figs.3 and 4 in the full paper.The analysis of Figs.3 and 4 shows preliminarily that scheme B is better than scheme A in that both lateral displacement and acceleration responses are considerably less.The analysis of Fig.4 shows that the effect of sub-structural stiffness on dynamical performance of mega-sub structure designed by scheme A is about the same as that designed by scheme B.
Aim.Two schemes we compare are: scheme A,only mega-structure resists pulsating wind loading;scheme B,both mega and sub structures resist it.To our knowledge,there is no paper in the open literature that considers scheme B.In the full paper,we explain in some detail our comparison and the analysis of a numerical example;in this abstract,we just add some pertinent remarks to listing the three topics of explanation.The first topic is: dynamical equations.In the first topic,our small contribution is eqs.(3) through(6) in the full paper.The second topic is: the method of dynamical analysis.The third topic is: the analysis of a numerical example.In the third topic,we present our calculation results in Figs.3 and 4 in the full paper.The analysis of Figs.3 and 4 shows preliminarily that scheme B is better than scheme A in that both lateral displacement and acceleration responses are considerably less.The analysis of Fig.4 shows that the effect of sub-structural stiffness on dynamical performance of mega-sub structure designed by scheme A is about the same as that designed by scheme B.
引文
[1]Chai W,Feng M Q.Vibration Control of Super Tall Buildings Subjected to Wind Loads.International Journal ofNonlinear Mechanics,1997,32:657~668
[2]Feng M Q,Mita A.Vibration Control of Tall Buildings Using Mega-Sub Configuration.Journal of EngineeringMechanics,1995,121:1082~1087
[3]连业达,张洵安.地震作用下新结构体系中阻尼器应用.工业建筑,2006,36(2):16~19Lian Yeda,Zhang Xun′an.Application of Dampers in New Building Structure under Earthquake.Industrial Building,2006,36(2):16~19(in Chinese)
[4]张洵安,张建霖等.子结构刚度对巨型框架减震结构体系的动态特性的影响.西北工业大学学报,2004,22(1):59~63Zhang Xun′an,Zhang Jianlin,et al.On Improving the Self-Absorption of Shock of Mega-Frame Building.Journal ofNorthwestern Polytechnical University,2004,22(1):59~63(in Chinese)
[5]Zhang Xun′an,Wang Dong,Jiang Jiesheng.The Controlling Mechanism and the Controlling Effectiveness of PassiveMega-Sub-Controlled Frame Subjected to Random Wind Loads.Journal of Sound and Vibration,2005,283:543~560
[6]蓝宗建,田玉基等.巨型框架多功能减震结构体系的减震机理及其减震效果分析.土木工程学报,2002,35(6):1~5Lan Zongjian,Tian Yuji,et al.The Mechanism and Efficiency of Multifunctional Vibration-Absorption for MegarframeStructures.China Civil Engineering Journal,2002,35(6):1~5(in Chinese)
[2]Feng M Q,Mita A.Vibration Control of Tall Buildings Using Mega-Sub Configuration.Journal of EngineeringMechanics,1995,121:1082~1087
[3]连业达,张洵安.地震作用下新结构体系中阻尼器应用.工业建筑,2006,36(2):16~19Lian Yeda,Zhang Xun′an.Application of Dampers in New Building Structure under Earthquake.Industrial Building,2006,36(2):16~19(in Chinese)
[4]张洵安,张建霖等.子结构刚度对巨型框架减震结构体系的动态特性的影响.西北工业大学学报,2004,22(1):59~63Zhang Xun′an,Zhang Jianlin,et al.On Improving the Self-Absorption of Shock of Mega-Frame Building.Journal ofNorthwestern Polytechnical University,2004,22(1):59~63(in Chinese)
[5]Zhang Xun′an,Wang Dong,Jiang Jiesheng.The Controlling Mechanism and the Controlling Effectiveness of PassiveMega-Sub-Controlled Frame Subjected to Random Wind Loads.Journal of Sound and Vibration,2005,283:543~560
[6]蓝宗建,田玉基等.巨型框架多功能减震结构体系的减震机理及其减震效果分析.土木工程学报,2002,35(6):1~5Lan Zongjian,Tian Yuji,et al.The Mechanism and Efficiency of Multifunctional Vibration-Absorption for MegarframeStructures.China Civil Engineering Journal,2002,35(6):1~5(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心