摘要
以某高墩大跨简支钢桁梁桥为实际工程背景,以摩擦摆支座的滑动曲面半径及滑动摩擦系数为主要参数,系统研究了竖向地震动强度对摩擦摆隔震桥梁地震反应的影响,并探讨了摩擦摆支座在高墩大跨简支钢桁梁桥中的减震效果.
Taking some tall piers and long span simply-supported steel truss girders as practical engineering background,and based on main parameters of the sliding curved surface radius and the sliding friction coefficient,the effect of vertical ground motion on seismic response of the isolated bridge with FPS is systematically researched and the seismic response reduction of tall pier and long span simply-supported steel truss girders with FPS is investigated.
引文
[1]徐龙军,谢礼立.竖向地震动加速度反应谱特性[J].地震工程与工程振动,2007,27(6):17-23.
[2]张显明,朱晞.近场竖向地震动对铁路桥梁地震反应的影响[J].华北科技学院学报,2005,2(4):30-33.
[3]聂利英,李建中,范立础.滑动支座竖向动反力对桥梁结构动力性能的影响[J].同济大学学报,2002,30(2):1290-1294.
[4]王常峰,陈兴冲.竖向地震动对桥梁结构地震反应的影响[J].振动与冲击,2007,26(6):31-36.
[5]徐秀丽,段好安,郎冬梅,等.预应力混凝土大跨连续梁桥隔震设计[J].公路交通科技,2009,26(8):46-50.
[6]Kim Y C,Xue Suduo,Zhuang Peng,et al.Seismic iso-lation analysis of FPS bearings in spatial lattice shellstructure[J].Earthquake Engineering and EngineeringVibration,2010,9(1):93-102.
[7]陈永祁,杨风利,刘林.摩擦摆隔震桥梁的设计及应用[J].工业建筑,2009,39(增刊):256-261.
[8]陈兴冲,商耀兆,张永亮,等.高墩大跨度铁路简支钢桁梁桥的减震性能分析[J].世界地震工程,2008,24(1):6-11.
[9]焦驰宇,胡世德,管仲国.FPS抗震支座分析模型的比较研究[J].振动与冲击,2007,26(10):113-117.