人工拟合地震动时程参数对场地反应的影响分析
|
摘要
采用目标谱拟合法人工合成地震动时程,拟合过程中对包络线参数进行定量的变化,进行土层地震反应分析。根据其对场地反应的影响,讨论时程参数对人工拟合地震动时程的影响规律,为场地抗震设防参数的选取提供依据。研究结果表明:t1t、2和c不同时,所拟合的地震动时程对土层地震反应结果有较大影响,其影响程度与土层结构关系密切。
The target spectral fitting method is used to synthesize time-history of ground motion.The soil seismic response is analyzed by quantitalively changing the parameters of envelope,which could influence the site response in the process of artificial fitting ground motion time-history.In order to provide the basis for site fortification against earthquake,the influences of the time-history parameters are discussed.The results show that,when t1、t2 and c taking different values,the soil seismic response are greatly affected by the fitting ground motion time-history,and the influence degree is closely related to the soil structure.
The target spectral fitting method is used to synthesize time-history of ground motion.The soil seismic response is analyzed by quantitalively changing the parameters of envelope,which could influence the site response in the process of artificial fitting ground motion time-history.In order to provide the basis for site fortification against earthquake,the influences of the time-history parameters are discussed.The results show that,when t1、t2 and c taking different values,the soil seismic response are greatly affected by the fitting ground motion time-history,and the influence degree is closely related to the soil structure.
引文
[1]石玉成,蔡红卫.场地地震反应分析中的不确定性及其处理方法[J].西北地震学报,1999,21(3):242-247.
[2]石玉成,蔡红卫.黄土地区场地的地震地面运动参数特征[J].西北地震学报,1998,20(3):66-72.
[3]李小军,彭青.不同类别场地地震动参数的计算方法[J].地震工程与工程振动,2001,21(1):29-36.
[4]霍俊荣,胡聿贤,冯启民.地面运动时程强度包络函数的研究[J].地震工程与工程振动,1991,11(1):3-11.
[5]Iemura.Hybrid Experi ment on Earthquake Failure Criteria ofR/C Structures[C].WCEE.1984,Ⅶ:103-110.
[6]Iyengar R N.A Stationary Random Process Model for Earth-quake Accelerograms[J].BSSA,1969,59(3):154-163.
[7]石玉成,卢育霞.甘肃黄土地区地震动持续时间预测研究[J].甘肃科学学报,2005,17(3):35-39.
[8]胡聿贤,周锡元.弹性体系在平稳和平稳化地面运动下的反应[A]∥地震工程研究报告集第一集[G].北京:科学出版社,1962:33-50.
[9]蒋溥,梁小华,雷军,等.工程地震动时程合成与模拟[M].北京:地震出版社,1991.
[10]卢育霞,石玉成.三危山断层近场地震动对敦煌莫高窟的影响研究[J].西北地震学报,2004,26(3):260-265.
[11]石玉成,王兰民.黄土场地覆盖层厚度和地形条件对地震动放大效应的影响[J].西北地震学报,1999,21(2):203-208.
[12]卢育霞,石玉成.1988年肃南地震近场地面运动的随机模拟[J].岩石力学和工程学报,2003,22(增刊2):2794-2799.
[13]胡聿贤.地震安全性评价技术教程[M].北京:地震出版社,1999.
[14]孙崇绍.西北黄土地区河谷城市地震动参数小区划研究———以兰州为例[J].西北地震学报,2007,29(1):3-11.
[2]石玉成,蔡红卫.黄土地区场地的地震地面运动参数特征[J].西北地震学报,1998,20(3):66-72.
[3]李小军,彭青.不同类别场地地震动参数的计算方法[J].地震工程与工程振动,2001,21(1):29-36.
[4]霍俊荣,胡聿贤,冯启民.地面运动时程强度包络函数的研究[J].地震工程与工程振动,1991,11(1):3-11.
[5]Iemura.Hybrid Experi ment on Earthquake Failure Criteria ofR/C Structures[C].WCEE.1984,Ⅶ:103-110.
[6]Iyengar R N.A Stationary Random Process Model for Earth-quake Accelerograms[J].BSSA,1969,59(3):154-163.
[7]石玉成,卢育霞.甘肃黄土地区地震动持续时间预测研究[J].甘肃科学学报,2005,17(3):35-39.
[8]胡聿贤,周锡元.弹性体系在平稳和平稳化地面运动下的反应[A]∥地震工程研究报告集第一集[G].北京:科学出版社,1962:33-50.
[9]蒋溥,梁小华,雷军,等.工程地震动时程合成与模拟[M].北京:地震出版社,1991.
[10]卢育霞,石玉成.三危山断层近场地震动对敦煌莫高窟的影响研究[J].西北地震学报,2004,26(3):260-265.
[11]石玉成,王兰民.黄土场地覆盖层厚度和地形条件对地震动放大效应的影响[J].西北地震学报,1999,21(2):203-208.
[12]卢育霞,石玉成.1988年肃南地震近场地面运动的随机模拟[J].岩石力学和工程学报,2003,22(增刊2):2794-2799.
[13]胡聿贤.地震安全性评价技术教程[M].北京:地震出版社,1999.
[14]孙崇绍.西北黄土地区河谷城市地震动参数小区划研究———以兰州为例[J].西北地震学报,2007,29(1):3-11.
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