磁悬浮基础地震反应的三维有限元分析
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摘要
磁悬浮基础为保证列车的正常运行,对变形要求极高,对于其抗震问题尚没有成熟的方法可供利用。本文采用有限单元法对磁悬浮基础进行了三维动力计算,分析了不同地震波输入对磁悬浮基础地震反应加速度、位移的影响,并计算分析了磁悬浮基础及周围土体的震陷。所得结论可为磁悬浮基础抗震设计提供参考依据。
It is very strict of the displacement of the foundation of the maglev guideway for the maglev train to work in gear. Seismic response analysis of the foundation is especially important. Therefore, this paper makes some analysis of it in 3D by FEM. Several seismic waves each are put into the analytic model in horizontal direction, and the transient response in time history is analyzed. The horizontal displacement response is specially calculated. According to the theory of dynamic analysis of effective stress, combined with the static analysis, the seismic subsidence of the foundation and soil around is investigated. Finally, some useful conclusions are reached.
It is very strict of the displacement of the foundation of the maglev guideway for the maglev train to work in gear. Seismic response analysis of the foundation is especially important. Therefore, this paper makes some analysis of it in 3D by FEM. Several seismic waves each are put into the analytic model in horizontal direction, and the transient response in time history is analyzed. The horizontal displacement response is specially calculated. According to the theory of dynamic analysis of effective stress, combined with the static analysis, the seismic subsidence of the foundation and soil around is investigated. Finally, some useful conclusions are reached.
引文
[1] 钱家欢,殷宗泽.土工原理与计算[M].北京:中国水 利水电出版社,1996.
[2] 周健,白冰,徐建平.土动力学理论与计算[M].北京:中国建筑工业出版社,2001.
[3] 吴世明,等.土动力学[M].北京:中国建筑工业出版社,2000.
[4] 董鹏.软土地层中地下建筑抗震稳定性分析[D].上海:同济大学地下建筑与工程系,2002.
[5] 李培振.结构地基动力相互作用体系的振动台试验及计算模拟分析[D].上海:同济大学结构工程与防灾研究所,2002.
[6] 王建华,杨进良,田会礼.场地地震响应分析的若干问题[J].天津大学学报,1998,31(6).
[7] ErdalSafak.Localsiteeffectsanddynamicsoilbehavior[J].SoilDynamicsandEarthquakeEngineering,2001,21:453～458.
[8] ShengWang,HongHao.Effectsofrandomvariationsofsoilpropertiesonsiteamplificationofseismicgroundmotions[J].SoilDynamicsandEarthquakeEngineering,2002,22:551～564.
[9] 蔡宏英,周健,李相菘.上海厚覆盖软土地层动力反应分析[A].第五届全国土动力学学术会议论文集[C],大连,1998.
[10] 谢康和,周健.岩土工程有限元分析理论与应用[M].北京:科学出版社,P317～326,2002.
[11] GilLM ,HernandezE ,DelaFuenteP .Simplifiedtransverseseismicanalysisofburiedstructures[J].SoilDynamicsandEarthquakeEngineering,2001,21:735～740.
[12] 陈清军.动力群桩效应的若干分析方法[J].世界地震工程,1996,1.
[13] ChenQingjun&XuZhixin.Responseofpilegroupembeddedinalayeredsoil superstructureinteractionsystemtoarbitraryincidentseismicwaves[J ].EarthquakeEngineering&EngineeringVibration,1994,14(1):36～44.
[14] WangJH ,ZhouXL ,LuJF .Dynamicresponseofpilegroupsembeddedinaporoelasticmedium[J].SoilDynamicsandEarthquakeEngineering,2003,23:235～242.
[15] 吴晓峰,周健,董鹏.软土地层中双圆盾构法隧道的抗震分析[J].工程抗震,2004,(4):27～31.
[2] 周健,白冰,徐建平.土动力学理论与计算[M].北京:中国建筑工业出版社,2001.
[3] 吴世明,等.土动力学[M].北京:中国建筑工业出版社,2000.
[4] 董鹏.软土地层中地下建筑抗震稳定性分析[D].上海:同济大学地下建筑与工程系,2002.
[5] 李培振.结构地基动力相互作用体系的振动台试验及计算模拟分析[D].上海:同济大学结构工程与防灾研究所,2002.
[6] 王建华,杨进良,田会礼.场地地震响应分析的若干问题[J].天津大学学报,1998,31(6).
[7] ErdalSafak.Localsiteeffectsanddynamicsoilbehavior[J].SoilDynamicsandEarthquakeEngineering,2001,21:453～458.
[8] ShengWang,HongHao.Effectsofrandomvariationsofsoilpropertiesonsiteamplificationofseismicgroundmotions[J].SoilDynamicsandEarthquakeEngineering,2002,22:551～564.
[9] 蔡宏英,周健,李相菘.上海厚覆盖软土地层动力反应分析[A].第五届全国土动力学学术会议论文集[C],大连,1998.
[10] 谢康和,周健.岩土工程有限元分析理论与应用[M].北京:科学出版社,P317～326,2002.
[11] GilLM ,HernandezE ,DelaFuenteP .Simplifiedtransverseseismicanalysisofburiedstructures[J].SoilDynamicsandEarthquakeEngineering,2001,21:735～740.
[12] 陈清军.动力群桩效应的若干分析方法[J].世界地震工程,1996,1.
[13] ChenQingjun&XuZhixin.Responseofpilegroupembeddedinalayeredsoil superstructureinteractionsystemtoarbitraryincidentseismicwaves[J ].EarthquakeEngineering&EngineeringVibration,1994,14(1):36～44.
[14] WangJH ,ZhouXL ,LuJF .Dynamicresponseofpilegroupsembeddedinaporoelasticmedium[J].SoilDynamicsandEarthquakeEngineering,2003,23:235～242.
[15] 吴晓峰,周健,董鹏.软土地层中双圆盾构法隧道的抗震分析[J].工程抗震,2004,(4):27～31.
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