网架屋盖考虑下部结构的摩擦摆隔震控制
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摘要
摩擦摆(FPS)是一种具有球形滑动面的隔震装置,可用于保护大型工程结构免遭地震灾害的破坏。近年来,大空间建筑发展迅猛,为了提高其抗震性能,将FPS安装于网格屋盖与下部支承结构之间形成滑移隔震机制以降低结构的地震响应。针对某网架屋盖及其下部支承结构,开展了FPS滑移隔震研究。采用大型通用有限元软件ABAQUS,建立了整体结构的三维模型,模型中包括接触面单元和梁单元,能够反映结构的非线性行为。通过非线性时程分析,研究了考虑不同参数时FPS对于上述结构地震防护的可行性和有效性。
Friction pendulum system(FPS)is a type of seismic isolator with spherical sliding surface that is intended for protecting large engineering structures from damages of earthquake.In recent years,large space buildings have been developed significantly.To improve the seismic performance of such buildings,the FPS is installed between the roof and substructure to form a sliding isolation mechanism to reduce the seismic response of the structure.A sliding isolation study is performed for steel lattice grid roof structures with substructures.The 3-D structural models are implemented by using the ABAQUS general-purpose finite element program.In the FE models,the FPS and structural components are simulated respectively with contact surface and beam elements to capture the nonlinear behavior of the structure.Nonlinear time-history analyses are executed to investigate the feasibility and effectiveness of the FPS under different parameters.
Friction pendulum system(FPS)is a type of seismic isolator with spherical sliding surface that is intended for protecting large engineering structures from damages of earthquake.In recent years,large space buildings have been developed significantly.To improve the seismic performance of such buildings,the FPS is installed between the roof and substructure to form a sliding isolation mechanism to reduce the seismic response of the structure.A sliding isolation study is performed for steel lattice grid roof structures with substructures.The 3-D structural models are implemented by using the ABAQUS general-purpose finite element program.In the FE models,the FPS and structural components are simulated respectively with contact surface and beam elements to capture the nonlinear behavior of the structure.Nonlinear time-history analyses are executed to investigate the feasibility and effectiveness of the FPS under different parameters.
引文
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[4]Selahattin Ersoy,Saadeghvaziri M Ala,Liu Gee Yu,et al.Analytical and Experimental Seismic Studies of Transformers Isolated with Friction Pendulum System and Design Aspects[J].Earthquake Spectra,2001,17(4):569-595.
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[13]李忠献,田力.地下爆炸波作用下基底滑移隔震大跨结构的动力响应分析[J].计算力学学报,2005,22(4):457-463.
[14]李霆,李宏胜,孙兆民,等.大跨巨型钢框架结构隔震设计与分析[J].建筑结构,2010,40(8):12-16.
[15]Kim Yong Chul,Xue Suduo,Zhuang Peng,et al.Seisimic Isolation Analysis of FPS Bearings in Spatial Lattice Shell Structures[J].Earthquake Engineering and Engineering Vibration,2010,9(1):93-102.
[16]Tsopelas P C,Roussis P C,Constantinou M C.Nonlinear Dynamic Analysis of Multi-Base Seismically Isolated Structures with Uplift Potential I:Formulations[J].Earthquake Engineering and Engineering Vibration,2009,8(3):421-431.
[17]Roussis P C,Tsopelas P C,Constantinou M C.Nonlinear Dynamic Analysis of Multi-Base Seismically Isolated Structures with Uplift Potential II:Verification Example[J].Earthquake Engineering and Engineering Vibration,2010,9(1):83-91.
[18]Constantinou M,Mokha A,Reinhorn A.Teflon Bearing in Base Isolation II:Modeling[J].Journal of Structural Engineering,1990,116(2):455-474.
[2]Mokha A,Amin N,Constantinou M C,et al.Seismic Isolation Retrofit of Large Historic Building[J].Journal of Structural Engineering,1996,122(3):298-308.
[3]Imbsen Roy A.Use of Isolation for Seismic Retrofitting Bridges[J].Journal of Bridge Engineering,2001,6(6):425-438.
[4]Selahattin Ersoy,Saadeghvaziri M Ala,Liu Gee Yu,et al.Analytical and Experimental Seismic Studies of Transformers Isolated with Friction Pendulum System and Design Aspects[J].Earthquake Spectra,2001,17(4):569-595.
[5]Clarke C S J,Buchanan R,Efthymiou M,et al.Structural Platform Solution for Seismic Arctic Environments—Sakhalin II Offshore Facilities[J].The Structural Engineer,2005,83(22):25-39.
[6]马良喆,陈永祁.摩擦摆隔震支座在储液罐隔震的应用[J].工业建筑,2009,35(增刊):494-498.
[7]李大望,庄鹏,周锡元.结构内设备的摩擦摆响应分析[J].世界地震工程,2004,20(4):90-93.
[8]田力,李忠献.地下爆炸波冲击下隔震连续梁桥动力响应分析[J].天津大学学报,2005,38(7):602-609.
[9]Almazan J L,De La Llera J C.Analytical Model of Structures with Frictional Pendulum Isolators[J].Earthquake Engineering and Structural Dynamics,2002,31:305-332.
[10]Almazan J L,De La Llera J C.Physical Model for Dynamic Analysis of Structures with FPS Isolators[J].Earthquake Engineering and Structural Dynamics,2003,32:891-918.
[11]Cilberto M C,Whittaker A S,Fenves G L.Characterization and Modeling of Friction Pendulum Bearings Subjected to Multiple Components of Excitation[J].Journal of Structural Engineering,2004,130(3):433-442.
[12]周云,龚键.摩擦摆隔震技术研究和应用的回顾与前瞻(II):摩擦摆隔震结构的性能分析及摩擦摆隔震技术的应用[J].工程抗震与加固改造,2010,32(4):1-19.
[13]李忠献,田力.地下爆炸波作用下基底滑移隔震大跨结构的动力响应分析[J].计算力学学报,2005,22(4):457-463.
[14]李霆,李宏胜,孙兆民,等.大跨巨型钢框架结构隔震设计与分析[J].建筑结构,2010,40(8):12-16.
[15]Kim Yong Chul,Xue Suduo,Zhuang Peng,et al.Seisimic Isolation Analysis of FPS Bearings in Spatial Lattice Shell Structures[J].Earthquake Engineering and Engineering Vibration,2010,9(1):93-102.
[16]Tsopelas P C,Roussis P C,Constantinou M C.Nonlinear Dynamic Analysis of Multi-Base Seismically Isolated Structures with Uplift Potential I:Formulations[J].Earthquake Engineering and Engineering Vibration,2009,8(3):421-431.
[17]Roussis P C,Tsopelas P C,Constantinou M C.Nonlinear Dynamic Analysis of Multi-Base Seismically Isolated Structures with Uplift Potential II:Verification Example[J].Earthquake Engineering and Engineering Vibration,2010,9(1):83-91.
[18]Constantinou M,Mokha A,Reinhorn A.Teflon Bearing in Base Isolation II:Modeling[J].Journal of Structural Engineering,1990,116(2):455-474.
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