高速铁路客站房桥合一结构层间隔震优化策略研究
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摘要
作为当前高速铁路建造中出现的一种新型客站形式———房桥合一结构体系已经开始应用于实际工程,其抗震设防研究有着迫切需求和重要意义。基于此,本文对房桥合一结构中设置层间隔震来实现减震控制开展研究工作,并重点探讨此类控制方法的参数优化策略。首先建立了房桥合一结构数值模型,通过引入虚拟激励法推导了高效准确的随机计算式,继而指出采用参数域方法进行优化更为合理,它可实现隔震层参数有效配置。最后,通过数值研究对随机地震激励下房桥合一结构层间隔震优化策略进行了验证分析,分别基于单桥模型和多桥模型研究了其减震机理和减震效果,提出可提高减震效果的参数优化策略。本文研究结果表明:设置经过参数合理优化的层间隔震装置对房桥合一结构减震是可行且有效的。
As a new type of structural system appearing in Chinese high speed railway construction,the seismic design research of integrated building-bridge structure has great significance.Based on this point,the application of storey isolation technique to the vibration control of integrated building-bridge structure is studied in this paper,and the research focuses on the effective parameter optimization strategy.Firstly,a numerical model of the integrated building-bridge structure is established,and by introducing the pseudo-excitation method,an efficient and accurate random formula is derived.Then,as the parameter field optimization method can achieve the effective setting,it is more reasonable and adopted in this paper.Finally,by numerical work,the optimization strategy of storey isolation in the integrated building-bridge structure subjected to random excitation is also studied,and the single-bridge model and multiple-bridge model are respectively adopted to investigate their effect and corresponding parameter's setting.The results show that the reasonable optimized storey isolation is feasible and effective in the seismic response reducing of the integrated building-bridge structure.
As a new type of structural system appearing in Chinese high speed railway construction,the seismic design research of integrated building-bridge structure has great significance.Based on this point,the application of storey isolation technique to the vibration control of integrated building-bridge structure is studied in this paper,and the research focuses on the effective parameter optimization strategy.Firstly,a numerical model of the integrated building-bridge structure is established,and by introducing the pseudo-excitation method,an efficient and accurate random formula is derived.Then,as the parameter field optimization method can achieve the effective setting,it is more reasonable and adopted in this paper.Finally,by numerical work,the optimization strategy of storey isolation in the integrated building-bridge structure subjected to random excitation is also studied,and the single-bridge model and multiple-bridge model are respectively adopted to investigate their effect and corresponding parameter's setting.The results show that the reasonable optimized storey isolation is feasible and effective in the seismic response reducing of the integrated building-bridge structure.
引文
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[10]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.LIN Jiahao,ZHANG Yahui.Pseudo-excitation method of random vibration[M].Beijing:Science Press,2004.(in Chinese)
[11]俞瑞芳,周锡元.非比例阻尼线性体系基于规范反应谱的CCQC法[J].工程力学,2006,23(2):10-17.YU Ruifang,ZHOU Xiyuan.CCQC method for seismic response of non-classically damped linear system based on code response spectra[J].Engi-neering Mechanics,2006,23(2):10-17.(in Chinese)
[2]刘文光.橡胶隔震支座力学性能及隔震结构地震反应分析研究[D].北京:北京工业大学,2004.LIU Wenguang.Mechanics properties of rubber bearings and earthquake response analysis of isolated structure[D].Beijing University of Technolo-gy,2004.(in Chinese)
[3]Skinner R L,Robinson W H.An introduction to seismic isolation[M].John Wiley&Sons Inc,UK,1993.
[4]Kelly J M.Earthquake resistant design with rubber[M].Second Edition,Springer Verlag London Limited,1997.
[5]Naeim F,Kelly J M.Design of seismic isolated structures[M].John Wiley&Sons Inc,UK,1999.
[6]叶献国,谢一可,李康宁.基础隔震结构在侧向碰撞下的地震反应分析[J].地震工程与工程振动,2008,28(4):161-167.YE Xianguo,XIE Yike,LI Kangning.Earthquake response analysis of base-isolated structure considering side impact[J].Journal of EarthquakeEngineering and Engineering and Engineering Vibration,2008,28(4):161-167.(in Chinese)
[7]FENG Demin,HE Wenfu,YANG Qiaorong,et al.Numerical response analysis and shaking table tests for bridge and building complex structuralsystem(Part I:complex structure dynamic test research)[C]//14th WCEE,Beijing:2008.
[8]LIU Wenguang,YANG Qiaorong,HUA Lei,etc.Numerical response analysis and shaking table tests for bridge and building complex structuralsystem(Part II:parameter optimum and earthquake response analysis)[C]//14th WCEE,Beijing:2008.
[9]房良.巨型框架多功能减振结构体系地震作用下减振理论及其试验研究[D].南京:东南大学,2004.FANG Liang.Vibration control mechanism and experimental research of multifunctional vibration-absorption megaframe structure under earthquake[D].Naijing:Southeast University,2004.(in Chinese)
[10]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.LIN Jiahao,ZHANG Yahui.Pseudo-excitation method of random vibration[M].Beijing:Science Press,2004.(in Chinese)
[11]俞瑞芳,周锡元.非比例阻尼线性体系基于规范反应谱的CCQC法[J].工程力学,2006,23(2):10-17.YU Ruifang,ZHOU Xiyuan.CCQC method for seismic response of non-classically damped linear system based on code response spectra[J].Engi-neering Mechanics,2006,23(2):10-17.(in Chinese)
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