高层隔震结构现存问题及改进策略
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摘要
随着建筑物抗震设计的安全性和适用性的要求日益提高,传统抗震设计方法存在诸多的局限性,而结构振动控制理论是解决该类问题的一种较好的新方法。理论分析、模型试验和试点工程实践均表明,合理的隔震结构设计可使地震反应降到相应传统抗震结构响应的40%以下,而且在地震设防区,尤其是高烈度设防地区,隔震技术可以作为一种有效方法突破层数限制。为了研究隔震技术在高层结构中的应用,在对高层非线性隔震结构进行隔震效果分析的基础上,与传统抗震结构地震反应进行了对比,并分析了高层隔震结构在高振型、大高宽比以及平移-扭转耦合效应作用对高层非线性隔震结构的影响,提出了高层隔震结构在应用上存在的问题及改进策略。
Conventional seismic design method has many limitations,and cannot satisfy the requirements of safety and applicability in the design of buildings in recent years.The structural vibration control theory is a new method to provide some help in this issue.A large number of theoretical and computational analyses,model tests and a pilot project in practice have showed that a rational design could reduce the seismic response of base-isolated structure to 40% or less of its traditional counterpart.In the fortified area of the earthquake,especially in high intensity fortified area,isolation technology can be used effectively in high-rise buildings.In order to study the application of isolation technology in high-rise structures,based on the analysis of isolation effect for high-rise non-linear base-isolated structures,earthquake responses.and the base-isolated effect of high-rise non-linear base-isolated structures under the action of higher mode vibrations,the effect of,aspect ratio and lateral-torsional coupling was analyzed.And finally,the existing problems and improvement strategies of high-rise base-isolated structure in application were put forward.
Conventional seismic design method has many limitations,and cannot satisfy the requirements of safety and applicability in the design of buildings in recent years.The structural vibration control theory is a new method to provide some help in this issue.A large number of theoretical and computational analyses,model tests and a pilot project in practice have showed that a rational design could reduce the seismic response of base-isolated structure to 40% or less of its traditional counterpart.In the fortified area of the earthquake,especially in high intensity fortified area,isolation technology can be used effectively in high-rise buildings.In order to study the application of isolation technology in high-rise structures,based on the analysis of isolation effect for high-rise non-linear base-isolated structures,earthquake responses.and the base-isolated effect of high-rise non-linear base-isolated structures under the action of higher mode vibrations,the effect of,aspect ratio and lateral-torsional coupling was analyzed.And finally,the existing problems and improvement strategies of high-rise base-isolated structure in application were put forward.
引文
[1]党育,杜永峰,李慧.基础隔震结构设计及施工指南[M].北京:中国水利水电出版社,2007.
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[3]Kelly J M.Earthquake resistant design with rubber[M].2nd Ed.London:Springer Verlag London Limited,1997.
[4]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,2002,22(2):33-41.
[5]付伟庆,刘文光,王建,等.高层隔振结构的等效简化模型研究[J].地震工程与工程振动,2005,25(6):142-143.
[6]熊仲明,王清敏.多层基础滑移房屋滑动抗倾覆稳定性判定[J].西安建筑科技大学学报,1998,30(3):288-300.
[7]李宏男,王苏岩,贾俊辉.采用基础摩擦隔震屋高宽比限值的研究[J].地震工程与工程振动,1997,17(3):74-76.
[8]刘文光.橡胶隔震支座力学性能和隔震结构地震反应分析研究[D].北京:北京工业大学,2003,20-24.
[9]刘文光,杨巧荣,周福霖.大高宽比隔震结构地震反应的实用分析方法[J].地震工程与工程振动,2004,24(4):118-119.
[10]丰定国,王社良.抗震结构设计[M].武汉:武汉理工大学,2003,56-57.
[11]沈金生.非比例阻尼隔震结构反应谱方法研究及平扭耦联动力分析[D].兰州:兰州理工大学,2007,50-51.
[2]李红梅.基础摩擦滑移隔振结构分析[D].保定:河北农业大学,2001.21-24.
[3]Kelly J M.Earthquake resistant design with rubber[M].2nd Ed.London:Springer Verlag London Limited,1997.
[4]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,2002,22(2):33-41.
[5]付伟庆,刘文光,王建,等.高层隔振结构的等效简化模型研究[J].地震工程与工程振动,2005,25(6):142-143.
[6]熊仲明,王清敏.多层基础滑移房屋滑动抗倾覆稳定性判定[J].西安建筑科技大学学报,1998,30(3):288-300.
[7]李宏男,王苏岩,贾俊辉.采用基础摩擦隔震屋高宽比限值的研究[J].地震工程与工程振动,1997,17(3):74-76.
[8]刘文光.橡胶隔震支座力学性能和隔震结构地震反应分析研究[D].北京:北京工业大学,2003,20-24.
[9]刘文光,杨巧荣,周福霖.大高宽比隔震结构地震反应的实用分析方法[J].地震工程与工程振动,2004,24(4):118-119.
[10]丰定国,王社良.抗震结构设计[M].武汉:武汉理工大学,2003,56-57.
[11]沈金生.非比例阻尼隔震结构反应谱方法研究及平扭耦联动力分析[D].兰州:兰州理工大学,2007,50-51.
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