相邻建筑考虑桩-土-结构相互作用(PSSI)碰撞分析
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摘要
采用Penzien模型及Hertzdamp碰撞单元,建立了相邻结构考虑PSSI的碰撞模型,推导了其碰撞动力方程,并对相邻结构进行了碰撞模拟和参数分析。研究表明:虽然PSSI对结构本身的地震响应影响并不大,但对相邻结构的碰撞响应影响明显。同时,在一定范围内,防震缝宽度、碰撞刚度、结构周期比、桩的截面惯性矩以及土的剪切波速对结构的碰撞反应有着显著的影响。
Based on Penzien model and Hertz-damp collision element,the authors construct a collision model considering the PSSI effect and make a collision simulation and a parametric analysis for the adjacent buildings.The study results show that the PSSI effect has a significant influence on the collision between the adjacent buildings and the width of the seismic joint,the impact rigidity,the period ratio of the two adjacent buildings,the moment inertia of pile section and the shear wave velocity of the soil also have significant influence on the collision responses of the adjacent buildings.
Based on Penzien model and Hertz-damp collision element,the authors construct a collision model considering the PSSI effect and make a collision simulation and a parametric analysis for the adjacent buildings.The study results show that the PSSI effect has a significant influence on the collision between the adjacent buildings and the width of the seismic joint,the impact rigidity,the period ratio of the two adjacent buildings,the moment inertia of pile section and the shear wave velocity of the soil also have significant influence on the collision responses of the adjacent buildings.
引文
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[2]Jing H-S,Yong M,Random Response of a single-degree-of–freedom vibration-impact system with clearance[J].Earthquake engineering andstructural dynamics.19901,9(6):789-798.
[3]Stavroulakis G E,Abdalla K M.Contact between adjacent structures[J].J Struct Engrg,ASCE,1991l,17(10):2838-2850.
[4]Athanassiadou C J,Penelis G G,Kappos A J.Seimic response of adjacent buildings with similar or different dynamic characteristics[J].Earth-quake Spectra1,994,10(2):293-317.
[5]Maison B F,Kasai K.Dynamics of pounding when two building collide[J].Earthquake Engineering and Structural Dynamics1,992,21:771-786.
[6]Susendar Muthukumar,Reginald DesRoches.A Hertz contact model with non-linear damping for pounding simulation[J].Earthquake EngngStruct.Dyn.2006,35:811-828.
[7]Filiatrault A,Wagner P,Cherry S H.Analytical prediction of experimental building pounding[J].Earthquake Engineering and Structural Dynam-ics,1 995,24:1131-1154.
[8]樊剑,刘铁,魏俊杰.近断层地震下摩擦隔震结构与限位装置碰撞反应及防护研究[J].土木工程学报.20074,0(5):10-16.
[9]Panos Trochalakis,Marc O Eberhard,John F Stanton.Design of seismic restrainers for in-span hinges[J].Journal of Structural Engineering,1997,123(4):469-478.
[10]陈国兴.岩土地震工程学[M].北京:科学出版社2,007.
[11]邹立华,赵人达,赵建昌.桩-土-隔震结构相互作用地震响应分析[J].岩土工程学报2,004,26(6):782-786.
[12]李永梅,孙国富,王松涛,等.桩-土-杆系结构的动力相互作用[J].建筑结构学报,20022,3(1):75-81.
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