增层隔震技术在既有建筑结构加固中的应用
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摘要
对层间隔震技术在既有建筑结构抗震加层加固中的应用进行了探讨。采用在双线性模型模拟隔震支座,通过参数化研究得到了隔震支座优化参数。对某工程加层后与未加层的地震响应进行了比较,结果表明,不同地震波作用下隔震支座的优化参数基本一致,增层隔震技术类似于TMD系统,但因子结构质量较大,能够起到更好的耗能减震效果,可有效削弱原结构的水平地震响应。
The application of story isolation technology on sei sm ic retrofitting and adding story for existing buildings is discussed.The rubber bearing is represented by bilinear model,and the optimal parameters of rubber bearing are achieved by parametric study.Seismic responses of a certain buildin g in the presence and absence of adding story are compared.The optimal paramete rs are consistent with each other while structure subjected to different earthqu ake records.The behavior of adding story isolation system is similar to the tun ed mass damper system,but the mass of the former is larger to obtain better ene rgy dissipation performance.The seismic response of original structure could be mitigated effectively.
The application of story isolation technology on sei sm ic retrofitting and adding story for existing buildings is discussed.The rubber bearing is represented by bilinear model,and the optimal parameters of rubber bearing are achieved by parametric study.Seismic responses of a certain buildin g in the presence and absence of adding story are compared.The optimal paramete rs are consistent with each other while structure subjected to different earthqu ake records.The behavior of adding story isolation system is similar to the tun ed mass damper system,but the mass of the former is larger to obtain better ene rgy dissipation performance.The seismic response of original structure could be mitigated effectively.
引文
[1]祁皑,林云腾,郑国琛.层间隔震结构工作机理研究[J].地震工程与工程振动,2006,26(4):239-243.
[2]Yasuhiro Tsuneki,Shingo Torii,Katsuhide Murakami,et al.Middle-story isolated structural system of high-rise building[J].Journal of Disaster Research,2009,4(3):229-238.
[3]Briman V,Ribakov Y.Using seismic isolatin columnsfor retrofitting buildings with soft stories[J].TheStructural Design of Tall and Special Buildings,2009,18(5):507-523.
[4]周福霖,张颖,谭平.层间隔震体系的理论研究[J].土木工程学报,2009,42(8):1-8.
[5]祁皑,郑国琛,阎维明.考虑参数优化的层间隔震结构振动台试验研究[J].建筑结构学报,2009,30(2):8-16.
[6]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004,24(6):114-120.
[7]祁皑,许航莉,郑国琛,等.高位层间隔震结构地震反应参数影响研究[J].工程抗震与加固改造,2010,32(2):51-56.
[8]李宏男,殷永炜,林立岩.采用摩擦和效能装置的加层结构振动台试验研究[J].建筑结构学报,2001,22(4):67-71.
[9]Li H N,Wanga S Y,Song G B,et al.Reduction ofseismic forces on existing buildings with newly con-structed additional studies including friction layer anddampers[J].Journal of Sound and Vibration.2004,269(3-5):653-667.
[10]叶昆,李黎,龙晓鸿.LRB基础隔震结构非线性动力响应的非迭代时程计算方法[J].振动与冲击,2008,27(11):46-50.
[2]Yasuhiro Tsuneki,Shingo Torii,Katsuhide Murakami,et al.Middle-story isolated structural system of high-rise building[J].Journal of Disaster Research,2009,4(3):229-238.
[3]Briman V,Ribakov Y.Using seismic isolatin columnsfor retrofitting buildings with soft stories[J].TheStructural Design of Tall and Special Buildings,2009,18(5):507-523.
[4]周福霖,张颖,谭平.层间隔震体系的理论研究[J].土木工程学报,2009,42(8):1-8.
[5]祁皑,郑国琛,阎维明.考虑参数优化的层间隔震结构振动台试验研究[J].建筑结构学报,2009,30(2):8-16.
[6]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004,24(6):114-120.
[7]祁皑,许航莉,郑国琛,等.高位层间隔震结构地震反应参数影响研究[J].工程抗震与加固改造,2010,32(2):51-56.
[8]李宏男,殷永炜,林立岩.采用摩擦和效能装置的加层结构振动台试验研究[J].建筑结构学报,2001,22(4):67-71.
[9]Li H N,Wanga S Y,Song G B,et al.Reduction ofseismic forces on existing buildings with newly con-structed additional studies including friction layer anddampers[J].Journal of Sound and Vibration.2004,269(3-5):653-667.
[10]叶昆,李黎,龙晓鸿.LRB基础隔震结构非线性动力响应的非迭代时程计算方法[J].振动与冲击,2008,27(11):46-50.
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