基于设计地震分组的反应谱特征周期研究
|
摘要
文章搜集整理了1933-2015年美国西部地区166个有详细钻孔资料台站场地上的1237条水平方向强震记录,按照我国现行建筑抗震设计规范中标准反应谱的形式对强震记录的加速度反应谱进行了拟合,提取了反应谱的特征周期;统计分析了特征周期取值随场地类别、震级、震中距的变化特征;确定了抗震设计规范中设计地震分组的划分方法,按设计地震分组统计计算了不同场地类别上的特征周期平均值,并与我国现行的建筑抗震设计规范中给定的特征周期值进行了对比研究。研究结果可为我国抗震设计规范修订时反应谱特征周期取值提供参考。
The 1237 horizontal strong ground motion records during 1933-2015 from 166 sites with detailed borehole data in the western United States are collected in this paper.The acceleration response spectrum curves of the records are fitted according to existing Code for Seismic Design of Buildings in China,and the characteristic periods of response spectrum are extracted.The influence of the site classification,the magnitude and the epicentral distance on the value of characteristic periods is analyzed based on the statistical result.The method of classification of design earthquake in Chinese code for seismic design is identified.The averages of the characteristic period of response spectrum on different sites are statistically analyzed based on design earthquake classification,and compared with those in the existing Code for Seismic Design of Buildings in China.The suggestions for the improvement of the characteristic periods of response spectrum in the code are given according to the results in the paper.
The 1237 horizontal strong ground motion records during 1933-2015 from 166 sites with detailed borehole data in the western United States are collected in this paper.The acceleration response spectrum curves of the records are fitted according to existing Code for Seismic Design of Buildings in China,and the characteristic periods of response spectrum are extracted.The influence of the site classification,the magnitude and the epicentral distance on the value of characteristic periods is analyzed based on the statistical result.The method of classification of design earthquake in Chinese code for seismic design is identified.The averages of the characteristic period of response spectrum on different sites are statistically analyzed based on design earthquake classification,and compared with those in the existing Code for Seismic Design of Buildings in China.The suggestions for the improvement of the characteristic periods of response spectrum in the code are given according to the results in the paper.
引文
[1]中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010:33-34.
[2]薄景山,李秀领,刘德东,等.土层结构对反应谱特征周期的影响[J].地震工程与工程振动,2003,23(5):42-45.
[3]郭晓云,薄景山,巴文辉.汶川地震反应谱特征周期统计分析[J].地震工程与工程振动,2013,33(2):55-59.
[4]李小军,彭青.不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,21(1):29-36.
[5]李小军,彭青,刘文忠.设计地震动参数确定中的场地影响考虑[J].世界地震工程,2001,17(4):34-41.
[6]夏峰,宋成科,孟庆筱,等.天津地区的覆盖层土动力学参数统计分析[J].地震工程学报,2015,37(1):49-54.
[7]耿淑伟.抗震设计规范中地震作用的规定[D].哈尔滨:中国地震局工程力学研究所,2005.
[8]胡聿贤.《中国地震动参数区划图》宣贯教材[M].北京:中国标准出版社,2001:52-55.
[9]刘红帅.基于小生境遗传算法的设计地震动反应谱标定方法[J].岩土工程学报,2009,31(6):975-979.
[10]郭晓云,薄景山,巴文辉,等.最小二乘法分段拟合标定反应谱方法[J].世界地震工程,2012,28(3):29-33.
[11]中国建筑科学研究院.建筑抗震设计规范:GB 50011—2001[S].北京:中国建筑工业出版社,2001:26-30.
[12]中华人民共和国原城乡建设环境保护部.建筑抗震设计规范:GBJ 11—89[S].北京:[s.n.],1989:18-22.
[13]中国地震局.中国地震动参数区划图:GB 18306—2001[S].北京:[s.n.],2001:6-10.
[14]周锡元,王广军,苏经宇.同样烈度下震级、震中距对地面运动谱特性的影响[J].地震工程动态,1983,6(1):49-55.
[15]霍俊荣.近场强地面运动衰减规律的研究[D].哈尔滨:中国地震局工程力学研究所,1989.
[2]薄景山,李秀领,刘德东,等.土层结构对反应谱特征周期的影响[J].地震工程与工程振动,2003,23(5):42-45.
[3]郭晓云,薄景山,巴文辉.汶川地震反应谱特征周期统计分析[J].地震工程与工程振动,2013,33(2):55-59.
[4]李小军,彭青.不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,21(1):29-36.
[5]李小军,彭青,刘文忠.设计地震动参数确定中的场地影响考虑[J].世界地震工程,2001,17(4):34-41.
[6]夏峰,宋成科,孟庆筱,等.天津地区的覆盖层土动力学参数统计分析[J].地震工程学报,2015,37(1):49-54.
[7]耿淑伟.抗震设计规范中地震作用的规定[D].哈尔滨:中国地震局工程力学研究所,2005.
[8]胡聿贤.《中国地震动参数区划图》宣贯教材[M].北京:中国标准出版社,2001:52-55.
[9]刘红帅.基于小生境遗传算法的设计地震动反应谱标定方法[J].岩土工程学报,2009,31(6):975-979.
[10]郭晓云,薄景山,巴文辉,等.最小二乘法分段拟合标定反应谱方法[J].世界地震工程,2012,28(3):29-33.
[11]中国建筑科学研究院.建筑抗震设计规范:GB 50011—2001[S].北京:中国建筑工业出版社,2001:26-30.
[12]中华人民共和国原城乡建设环境保护部.建筑抗震设计规范:GBJ 11—89[S].北京:[s.n.],1989:18-22.
[13]中国地震局.中国地震动参数区划图:GB 18306—2001[S].北京:[s.n.],2001:6-10.
[14]周锡元,王广军,苏经宇.同样烈度下震级、震中距对地面运动谱特性的影响[J].地震工程动态,1983,6(1):49-55.
[15]霍俊荣.近场强地面运动衰减规律的研究[D].哈尔滨:中国地震局工程力学研究所,1989.