中美欧储罐抗震规范中地震作用的比较研究
|
摘要
对比分析了中国、美国和欧州国家储罐抗震设计规范在抗震设防基准、设防目标、设计参数、储罐简化模型、设计反应谱和地震力降低系数等方面的不同特点,比较各规范设计地震作用的大小。研究表明:我国鉴定标准、美国API650和欧洲EC-8的抗震设防水准基本相当,而欧洲EC-8的抗震设防目标偏低。对于中等类型场地上的低自振周期储罐,我国鉴定标准设计地震作用与美国API650相当,但低于欧洲EC-8设计值,鉴定标准的晃动波高大于欧洲EC-8。另外以我国常用系列浮顶罐和大型浮顶罐为研究对象,比较储罐频率、液体等效质量、晃动波高等参数的不同。研究得到一些结论和建议,对修订我国储罐抗震设计规范有借鉴意义。
In this paper,the Chinese,American and European seismic design codes on liquid storage tanks are compared in terms of aseismic fortification level,seismic fortification objects,various design paramaters,simplied tank model,design spectra and response reduction factors.The seismic forces of different codes are analyzed.It is observed that three seismic design codes have almost equivalent fortification level,but the fortification object of Eurocode 8 is lower.On a medium site,the seismic force computed by Chinese codes is close to that of American API650 when tank has low natural period,but it is greatly smaller than design force of Eurocode 8.Moreover,the sloshing height of Chinese codes is higher for comparing with that of Eurocode 8.In addition,there are difference between tank period,impulsive mass and convective mass for a series of floating tanks.The results and suggestions obtained from the studies can promote seismic design of the liquid storage tank.
In this paper,the Chinese,American and European seismic design codes on liquid storage tanks are compared in terms of aseismic fortification level,seismic fortification objects,various design paramaters,simplied tank model,design spectra and response reduction factors.The seismic forces of different codes are analyzed.It is observed that three seismic design codes have almost equivalent fortification level,but the fortification object of Eurocode 8 is lower.On a medium site,the seismic force computed by Chinese codes is close to that of American API650 when tank has low natural period,but it is greatly smaller than design force of Eurocode 8.Moreover,the sloshing height of Chinese codes is higher for comparing with that of Eurocode 8.In addition,there are difference between tank period,impulsive mass and convective mass for a series of floating tanks.The results and suggestions obtained from the studies can promote seismic design of the liquid storage tank.
引文
[1]GB 50191-93,构筑物抗震设计规范[S].
[2]SH3048-1999,石油化工钢制设备抗震设计规范[S].
[3]SHT3026-2005,钢制常压立式圆筒形储罐抗震鉴定标准[S].
[4]GB 50011-2001,建筑抗震设计规范[S].
[5]European Committee for Standardization.Eurocode8:Design Provisions for Earthquake Resistance[S].2004.
[6]American Petroleum Institute(API).Welded Storage Tanks for Oil Storage,API650[S].2007.
[7]沈建文,石树中.大中小震与抗震设防标准[J].地震学报,2004,26(5):533-538.
[8]范力,赵斌,吕西林.欧洲规范8与中国抗震设计规范关于抗震设防目标和地震作用的比较[J].结构工程师,2006,22(6):59-63.
[9]杨媛,白绍良.从各国规范对比看我国抗震设计安全水准评价中的有关问题[J].重庆建筑大学学报,2000,22:192-200.
[10]陈国兴.中国建筑抗震设计规范的演变和展望[J].防灾减灾工程学报,2003,23(1):102-113.
[11]刘洁平,李小东,张令心.浅谈欧洲规范Eurocode8-结构抗震设计[J].世界地震工程,2006,22(3):53-59.
[12]翟长海,谢礼立.抗震规范应用强度折减系数的现状及分析[J].地震工程与工程振动,2006,26(2):1-7.
[2]SH3048-1999,石油化工钢制设备抗震设计规范[S].
[3]SHT3026-2005,钢制常压立式圆筒形储罐抗震鉴定标准[S].
[4]GB 50011-2001,建筑抗震设计规范[S].
[5]European Committee for Standardization.Eurocode8:Design Provisions for Earthquake Resistance[S].2004.
[6]American Petroleum Institute(API).Welded Storage Tanks for Oil Storage,API650[S].2007.
[7]沈建文,石树中.大中小震与抗震设防标准[J].地震学报,2004,26(5):533-538.
[8]范力,赵斌,吕西林.欧洲规范8与中国抗震设计规范关于抗震设防目标和地震作用的比较[J].结构工程师,2006,22(6):59-63.
[9]杨媛,白绍良.从各国规范对比看我国抗震设计安全水准评价中的有关问题[J].重庆建筑大学学报,2000,22:192-200.
[10]陈国兴.中国建筑抗震设计规范的演变和展望[J].防灾减灾工程学报,2003,23(1):102-113.
[11]刘洁平,李小东,张令心.浅谈欧洲规范Eurocode8-结构抗震设计[J].世界地震工程,2006,22(3):53-59.
[12]翟长海,谢礼立.抗震规范应用强度折减系数的现状及分析[J].地震工程与工程振动,2006,26(2):1-7.
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