高墩大跨度铁路简支钢桁梁桥的减震性能分析
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摘要
采用时程分析方法,研究了具有减隔震支座的铁路高墩大跨度简支钢桁梁桥的减震性能,探讨减隔震技术在高墩桥梁中的适用性。通过数值分析研究了采用铅芯橡胶支座、盆式橡胶支座和双曲面支座时的减震效果。计算结果表明,在铁路高墩大跨度简支钢桁梁桥上使用减隔震支座具有一定的减震效果。
The seismic reduction performance of high pier and long span railway simply-supported steel truss girders with the bearing of shock absorption and vibration isolation is presented by using time history response analysis,and technical applicability of shock absorption and vibration isolation for the bridge of high pier is discussed.The seismic reduction effect of lead rubber bearing,pot rubber bearing and hyperbolical bearing is researched by using numerical analysis.The calculated result shows that some seismic reduction effects is obtained by using the bearing of shock absorption and vibration isolation on the high pier and long span railway simply-supported steel truss girders.
The seismic reduction performance of high pier and long span railway simply-supported steel truss girders with the bearing of shock absorption and vibration isolation is presented by using time history response analysis,and technical applicability of shock absorption and vibration isolation for the bridge of high pier is discussed.The seismic reduction effect of lead rubber bearing,pot rubber bearing and hyperbolical bearing is researched by using numerical analysis.The calculated result shows that some seismic reduction effects is obtained by using the bearing of shock absorption and vibration isolation on the high pier and long span railway simply-supported steel truss girders.
引文
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[8]Turkington D H,Carr A J,Cooke N,et al.Seismic design of bridges on lead-rubber bearings[J].Journal of structural Engineering,ASCE,1989,115(SE12):3000-3016.
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[2]阎志刚.高桥墩延性抗震性能研究[D].北京:北京交通大学,2002.
[3]李建中,宋晓东,范立础.桥梁高墩位移延性能力的探讨[J].地震工程与工程振动,2005,25(1):43-48.
[4]张骏,阎贵平.减隔震支座对梁式桥抗震性能的影响[J].中国公路学报,2002,15(1):38-43.
[5]朱东生,劳远昌,沈大元,等.LRB隔震桥梁的地震反应特点[J].工程力学,2000,18(1):119-125.
[6]方海,李升玉,王曙光,等.高烈度区连续梁桥的减隔震设计方法研究[J].地震工程与工程振动,2005,25(6):178-182.
[7]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81-85.
[8]Turkington D H,Carr A J,Cooke N,et al.Seismic design of bridges on lead-rubber bearings[J].Journal of structural Engineering,ASCE,1989,115(SE12):3000-3016.
[9]徐秀丽,于兰珍,王曙光,等.高墩连续梁桥减震设计研究[J].工程抗震与加固改造,2005,27(5):63-67.
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