渡槽-水体系统的地震反应分析
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摘要
以某梁式柔性墩渡槽工程为背景，建立了水体－渡槽的主、次系统动力分析模型，分别采用时程分析法和振型分解反应谱法，对横向地震激励下该系统的地震反应进行了分析。研究结果表明，槽体中水体存在明显的晃荡作用，起到了ＴＬＤ的效应；当渡槽采用橡胶支座后，ＴＬＤ效应虽有所下降，但却构成一个ＴＭＤ与ＴＬＤ共存的系统，减震效果更加显著
With a beam type of aqueduct engineering with the flexible piers as the background, the dynamic analysis models for the primary and secondary systems of water aqueduct system are established in this paper. The time history analysis method and the response spectrum method are used to analyse the seismic response of the system excited by the horizontal transverse direction earthquake. The research results indicate that there exists obvious sloshing action in water body remaining in the aqueduct, playing a TLD role. When rubber bearings are adopted to support the acqueduct, despite the decrease in TLD role, the co existence system of TMD and TLD is formed. Accordingly, seismic reduction effect becomes so apparent that it is of important reference value for the aqueduct engineering design.
With a beam type of aqueduct engineering with the flexible piers as the background, the dynamic analysis models for the primary and secondary systems of water aqueduct system are established in this paper. The time history analysis method and the response spectrum method are used to analyse the seismic response of the system excited by the horizontal transverse direction earthquake. The research results indicate that there exists obvious sloshing action in water body remaining in the aqueduct, playing a TLD role. When rubber bearings are adopted to support the acqueduct, despite the decrease in TLD role, the co existence system of TMD and TLD is formed. Accordingly, seismic reduction effect becomes so apparent that it is of important reference value for the aqueduct engineering design.
引文
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[3] 张俊发,刘云贺,王克成. 铅芯橡胶减震技术在渡槽中的应用[J]. 水利学报,1999(10):31～35.
[4] (JTJ004-1989) 公路工程抗震设计规范.
[5] 居荣初,曾心传. 弹性结构与液体的耦联振动理论[M]. 北京:地震出版社,1983.
[6] Kareem A, Sun W J. Stochastic response of structures w ith fluid-containing appendages[J]. JournalofSound andVibration,1987,119(3):389～408.
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[10] 欧进萍,王永富. 设置TMD、TLD 控制系统的高层建筑风振分析与设计方法[J]. 地震工程与工程振动,1994,14(2):61～75.
[11] 范立础. 桥梁抗震[M]. 上海:同济大学出版社,1997.
[2] 张俊发,刘云贺,王克成. 设置叠层橡胶支座梁式渡槽的地震响应分析[J]. 水利学报,1999(1):50～54.
[3] 张俊发,刘云贺,王克成. 铅芯橡胶减震技术在渡槽中的应用[J]. 水利学报,1999(10):31～35.
[4] (JTJ004-1989) 公路工程抗震设计规范.
[5] 居荣初,曾心传. 弹性结构与液体的耦联振动理论[M]. 北京:地震出版社,1983.
[6] Kareem A, Sun W J. Stochastic response of structures w ith fluid-containing appendages[J]. JournalofSound andVibration,1987,119(3):389～408.
[7] Aabram son H. The Dynam ic Behavior ofLiquid in Moving Containers[R]. NASA,1966.1～106.
[8] Sir Horace Lam b. Hydrodynam ics[M]. New York:Dover,1945.
[9] 张敏政,丁世文,郭迅. 利用水箱减震的结构控制研究[J]. 地震工程与工程振动,1993,13(1):40～48.
[10] 欧进萍,王永富. 设置TMD、TLD 控制系统的高层建筑风振分析与设计方法[J]. 地震工程与工程振动,1994,14(2):61～75.
[11] 范立础. 桥梁抗震[M]. 上海:同济大学出版社,1997.
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