古建筑木构架长周期地震响应分析
|
摘要
在目前古建筑研究领域中,对木构架的抗震分析绝大多数都是在普通地震动作用下,而对长周期地震动作用下的木构架动力研究相对较少。主要选择了两条典型的长周期地震波和两条普通的地震波,对古建筑木构架整体结构在两类地震波作用下的动力响应进行比较研究。研究表明,台湾集集地震波和Loma-Prieta地震波的长周期成分要比El-Centro地震波和兰州波的长周期成分丰富的多;两条长周期地震波的高频成分远远少于两条普通地震波;在小震时,古建筑木构架对长周期地震动的动力响应值与普通地震动相差不大,而在中震和大震时,对长周期地震动的动力响应值要远远高于普通地震动;大震(400 gal)时木构架的减震效果比中震(220 gal)、小震(110 gal)时的减震效果要好。
In present research fields of ancient building,the seismic analysis of a timber structure is most under common earthquake,but studies on dynamic response of a timber structure under long-period earthquake are relatively few.Here,two typical long-period seismic waves and two common seismic ones were chosen,and the dynamic respones of the whole structure of an ancient timber building under the two types of waves were studied.Results showed that Chi-Chi and Loma-Prieta waves have much more components of leng period than El-Centro and LAN Zhou waves do;the two long-period seismic waves have far less higher frequency components than the two common seismic waves do;under light earthquake,the dynamic response of the structure to long-period and common seismic waves is probably the same,while under the moderate and heavy earthquakes,the dynamic response of the structure to long-period seismic waves is much larger than that to common seismic waves;the anti-vibration effect of the semi-rigid connection building Sun-Mao under heavy earthquake(400gal) is better than that under moderate(220gal)and light earthquakes(110gal).
In present research fields of ancient building,the seismic analysis of a timber structure is most under common earthquake,but studies on dynamic response of a timber structure under long-period earthquake are relatively few.Here,two typical long-period seismic waves and two common seismic ones were chosen,and the dynamic respones of the whole structure of an ancient timber building under the two types of waves were studied.Results showed that Chi-Chi and Loma-Prieta waves have much more components of leng period than El-Centro and LAN Zhou waves do;the two long-period seismic waves have far less higher frequency components than the two common seismic waves do;under light earthquake,the dynamic response of the structure to long-period and common seismic waves is probably the same,while under the moderate and heavy earthquakes,the dynamic response of the structure to long-period seismic waves is much larger than that to common seismic waves;the anti-vibration effect of the semi-rigid connection building Sun-Mao under heavy earthquake(400gal) is better than that under moderate(220gal)and light earthquakes(110gal).
引文
[1]谢礼立,周雍年,胡成祥,等.地震动反应谱的长周期特性[J].地震工程与工程振动,1990,10(1):8-14.
[2]臧明明,陈清军.长周期地震动的场地效应与大跨桥梁结构的动力响应分析[J].结构工程师,2010,26(1):24-27.
[3]廖述清,裴星洙,周晓松,等.长周期地震动作用下结构的弹塑性地震反应分析[J].建筑结构,2005(5):24-27.
[4]张振炫,陈清军.高层建筑结构长周期地震反应的比较研究[J].结构工程师.2009,25(4):78-84.
[5]李春峰,张旸,赵金宝,等.台湾集集大地震及其余震的长周期地震动特性[J].地震学报.2006,28(4):417-428.
[6]李诫(宋).营造法式[M].上海:商务印书馆,1950.
[7]隋龑.中国古代木构耗能减震机理与动力特性分析[D].西安:西安建筑科技大学,2009.
[8]苏军.中国木结构古建筑抗震性能的分析[D].西安:西安建筑科技大学,2008.
[9](GB50011-2010)建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[10]Faccioli E,Paolucci R,Rey J.Displacement spectra for longperiods[J].Earthquake Spectra,2004,20(2):347-376.
[2]臧明明,陈清军.长周期地震动的场地效应与大跨桥梁结构的动力响应分析[J].结构工程师,2010,26(1):24-27.
[3]廖述清,裴星洙,周晓松,等.长周期地震动作用下结构的弹塑性地震反应分析[J].建筑结构,2005(5):24-27.
[4]张振炫,陈清军.高层建筑结构长周期地震反应的比较研究[J].结构工程师.2009,25(4):78-84.
[5]李春峰,张旸,赵金宝,等.台湾集集大地震及其余震的长周期地震动特性[J].地震学报.2006,28(4):417-428.
[6]李诫(宋).营造法式[M].上海:商务印书馆,1950.
[7]隋龑.中国古代木构耗能减震机理与动力特性分析[D].西安:西安建筑科技大学,2009.
[8]苏军.中国木结构古建筑抗震性能的分析[D].西安:西安建筑科技大学,2008.
[9](GB50011-2010)建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[10]Faccioli E,Paolucci R,Rey J.Displacement spectra for longperiods[J].Earthquake Spectra,2004,20(2):347-376.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心