高墩大跨连续刚构桥地震反应的行波效应研究
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摘要
运用大型结构分析程序Midas/civil在地震波作用下,对某一实际高墩大跨连续刚构桥的地震反应的行波效应进行了时程分析的数值模拟,分析了高墩大跨连续桥在顺桥向地震波作用下不同的相位差的行波效应,以及行波效应对桥梁高低墩墩差产生的影响.结果表明:行波效应对高墩大跨连续桥的影响很大,桥梁高低墩墩差越大行波效应越明显,高墩大跨连续桥在抗震设计时应考虑行波效应.
By using large-scale structural analysis program Midas/civil,under the action of seismic waves,time-history analysis of the numerical simulation is imposed on the travelling wave effect of seismic response of a real high-pier-span continuous rigid frame bridge.Analysis is about the travelling wave effect of different phase of high-span continuous bridge pier under the action of the seismic waves parallel with the bridge,as well as different impact of the travelling-wave effect on the height difference of bridge piers.The results show that the influence of travelling wave effect on the high-span continuous bridge pier is great.The greater the height difference pier of the bridge,the more obvious effect of the larger waveis.travelling wave effect should be taken into consideration in the seismic design of high-span continuous bridge piers.
By using large-scale structural analysis program Midas/civil,under the action of seismic waves,time-history analysis of the numerical simulation is imposed on the travelling wave effect of seismic response of a real high-pier-span continuous rigid frame bridge.Analysis is about the travelling wave effect of different phase of high-span continuous bridge pier under the action of the seismic waves parallel with the bridge,as well as different impact of the travelling-wave effect on the height difference of bridge piers.The results show that the influence of travelling wave effect on the high-span continuous bridge pier is great.The greater the height difference pier of the bridge,the more obvious effect of the larger waveis.travelling wave effect should be taken into consideration in the seismic design of high-span continuous bridge piers.
引文
[1]何波,朱宏平,史雅楠.大跨径连续刚构桥抗震性能评价[J].公路,2007,(11):1-6.
[2]刘洪兵.大跨桥梁考虑地形及多点激励的地震响应分析[J].同济大学学报,2003,31(6):641-646.
[3]黄小国,胡大琳,张后举.行波效应对大跨度连续刚构桥地震反应的影响[J].长安大学学报(自然科学版),2008,(1):72-76.
[4]李忠献,史志利.行波激励下大跨度连续刚构桥的地震反应分析[J].地震工程与工程振动,2003,(2):68-76.
[5]张亚辉,李丽媛,陈艳,等.大跨度结构地震行波效应研究[J].大连理工大学学报,2005,(4):480-486.
[6]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[7]苏成,陈海斌.多点激励下大跨度桥梁的地震反应[J].华南理工大学学报(自然科学版),2008,(11):101-107.
[8]王波,张海龙,徐丰.薄壁高墩大跨连续刚构桥地震时程反应参数研究[J].公路工程,2007,(4):28-32.
[2]刘洪兵.大跨桥梁考虑地形及多点激励的地震响应分析[J].同济大学学报,2003,31(6):641-646.
[3]黄小国,胡大琳,张后举.行波效应对大跨度连续刚构桥地震反应的影响[J].长安大学学报(自然科学版),2008,(1):72-76.
[4]李忠献,史志利.行波激励下大跨度连续刚构桥的地震反应分析[J].地震工程与工程振动,2003,(2):68-76.
[5]张亚辉,李丽媛,陈艳,等.大跨度结构地震行波效应研究[J].大连理工大学学报,2005,(4):480-486.
[6]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[7]苏成,陈海斌.多点激励下大跨度桥梁的地震反应[J].华南理工大学学报(自然科学版),2008,(11):101-107.
[8]王波,张海龙,徐丰.薄壁高墩大跨连续刚构桥地震时程反应参数研究[J].公路工程,2007,(4):28-32.
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