剪切波速不确定性对地表反应谱平台值的影响
|
摘要
剪切波速不确定性对场地地震反应具有显著的影响。基于不同场地类别的228个实际工程场地剖面,采用一维等效线性化波动分析程序LSSRLI-1。研究了不同地震动输入下土层剪切波速的不确定性对地表反应谱平台值的影响;提出了用地表反应谱平台值变化率表征剪切波速的不确定性引起的地表反应谱平台值的相对改变量;建立了地表反应谱平台值变化率与剪切波速变异率之间的函数关系;建议了考虑土层剪切波速的不确定性对地表反应谱平台值影响的修正公式,并给出了相应的修正系数,所得到的成果为工程抗震设计定量考虑剪切波速的不确定性对地表反应谱平台值的影响提供了科学依据。
Uncertainty of shear wave velocity of soil has significant effects on the seismic response of site. Based on228 profiles of real site with different site categories specified by Chinese Code for Seismic Design for structures( GB50011- 2001),the effects of uncertainty of soil's shear wave velocity on platform value of surface spectra are studied under different incident earthquake inputs using one- dimensional equivalent linearization fluctuations program LSSRLI- 1. The change rate of platform value of surface spectra indicates the relative altering value of platform value of surface spectra induced by the uncertainties of shear wave. The functions of change rates for the platform value of surface spectra and variation rates of shear wave velocity are founded and the modification formula of considering effects of uncertainty of shear wave velocity of soil on platform value of response spectrum and their coefficients are proposed. The results obtained can be used in quantitatively considering effects of uncertainty of shear wave velocity of soil on platform value of response spectrum.
Uncertainty of shear wave velocity of soil has significant effects on the seismic response of site. Based on228 profiles of real site with different site categories specified by Chinese Code for Seismic Design for structures( GB50011- 2001),the effects of uncertainty of soil's shear wave velocity on platform value of surface spectra are studied under different incident earthquake inputs using one- dimensional equivalent linearization fluctuations program LSSRLI- 1. The change rate of platform value of surface spectra indicates the relative altering value of platform value of surface spectra induced by the uncertainties of shear wave. The functions of change rates for the platform value of surface spectra and variation rates of shear wave velocity are founded and the modification formula of considering effects of uncertainty of shear wave velocity of soil on platform value of response spectrum and their coefficients are proposed. The results obtained can be used in quantitatively considering effects of uncertainty of shear wave velocity of soil on platform value of response spectrum.
引文
[1]卢寿德.GB17741-2005《工程场地地震安全性评价》宣贯教材[M].北京:中国标准出版社,2006.LU Shoude.Propagandizing and teaching materials of“Evaluation of seismic safety for engineering sites”[M].Beijing:Standard Press of China,2006.
[2]兰景岩,刘红帅,吕悦军,等.表层土剪切波速的不确定性对地表设计谱平台值的影响[J].吉林大学学报(地球科学版),2012,42(3):772-778.LAN Jingyan,LIU Hongshuai,LV Yuejun,et al.Effects of uncertainties of shear wave velocity of soil surface layer on platform value of surface design response spectra[J].Journal of Jilin University(Earth Science Edition),2012,42(3):772-778.
[3]王钟琦,谢君斐,石兆吉.地震工程地质导论[M].北京:地震出版社,1983.WANG Zhongqi,XIE Junfei,SHI Zhaoji.Introduction to earthquake engineering geology[M].Beijing:Seismological Press,1983.
[4]高玉峰,刘汉龙,朱伟.剪切波速对砂土层地震反应的影响[J].工程勘察,2001,(1):39-42.GAO Yufeng,LIU Hanlong,ZHU Wei,et al.Influence of shear wave velocity on the seismic response of sand ground[J].Geotechnical Investigation&Surveying,2001,1:39-42.
[5]刘红帅,薄景山,吴兆营,等.土体参数对地表加速度峰值和反应谱的影响[J].地震研究,2005,28(2):167-171.LIU Hongshuai,BO Jingshan,WU Zhaoying,et al.Effects of soil parameters on ground surface acceleration peak and response spectra[J].Journal of Seismological Research,2005,28(2):167-171.
[6]陈国兴,刘雪珠,王炳辉.土动力参数变异性对深软场地地表地震动参数的影响[J].防灾减灾工程学报,2007,27(1):1-10.CHEN Guoxing,LIU Xuezhu,WANG Binghui.Effect of variability of soil dynamic parameters on ground motion parameters for deep soft sites[J].Journal of Disaster Prevent ion and Mitigation Engineering,2007,27(1):1-10.
[7]孙锐,袁晓铭,刘晓健.动剪切模量比与剪切波速对地震动影响及等量关系研究[J].岩土工程学报,2009,31(8):1267-1274.SUN Rui,YUAN Xiaoming,LIU Xiaojian.Effects of dynamic shear modulus ratio and velocity on surface ground motion and their equivalent relations[J].Chinese Journal of Geotechnical Engineering,2009,31(8):1267-1274.
[8]RATHJE E M,KOTTKE A R,TRENT W L.Influence of input motion and site property variabilities on seismic site response analysis[J].Journal of Geotechnical And Geoenvironmental Engineering,2010,136(4):607-619.
[9]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB17741-2005工程场地地震安全性评价[S].北京:中国标准出版社,2005.General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,Standardization Administration of the People's Republic of China.GB17741-2005 Seismic safety evaluation of engineering sites[S].Beijing:China Standardization Press,2005.
[10]廖振鹏.地震小区划(理论与实践)[M].北京:地震出版社,1989.LIAO Zhenpeng.Seismic microzonation[M].Beijing:Seismological Press,1989.
[11]中华人民共和国建设部,国家质量监督检验检疫总局.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.Ministry of Construction of the People's Republic of China,General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China.Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2001.
[12]袁晓铭,孙锐,孙静等.常规土类动剪切模量和阻尼比试验研究[J].地震工程与工程振动,2000,20(4):133-139.YUAN Xiaoming,SUN Rui,SUN Jing,et al.Laboratory experimental study on dynamic shear modulus ratio and damping ratio of soils[J].Earthquake Engineering and Engineering Vibration,2000,20(4):133-139.
[13]王绍博,丁海平.土动力参数对土层动力反应的影响[J].地震工程与工程振动,2001,21(1):105-108.WANG Shaobo,DING Ha-ping.Effect of soil dynamic parameters on seismic responses of soil layers[J].Earthquake Engineering and Engineering Vibration,2001,21(1):105-108.
[14]孙静,袁晓铭,孙锐.土动剪切模量和阻尼比的推荐值和规范值的合理性比较[J].地震工程与工程振动,2004,24(2):125-133.SUN Jing,YUAN Xiao-ming,SUN Rui.Reasonability comparison between recommended and code values of dynamic shear modulus and damping ratio of soils[J].Earthquake Engineering and Engineering Vibration,2004,24(2):125-133.
[15]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.GUO Xiaoyun,BO Jingshan,BA Wenhui,et al.Sectional least square fitting method for calibrating seismic design response spectrum[J].World Earthquake Engineering,2012,28(3):29-33.
[2]兰景岩,刘红帅,吕悦军,等.表层土剪切波速的不确定性对地表设计谱平台值的影响[J].吉林大学学报(地球科学版),2012,42(3):772-778.LAN Jingyan,LIU Hongshuai,LV Yuejun,et al.Effects of uncertainties of shear wave velocity of soil surface layer on platform value of surface design response spectra[J].Journal of Jilin University(Earth Science Edition),2012,42(3):772-778.
[3]王钟琦,谢君斐,石兆吉.地震工程地质导论[M].北京:地震出版社,1983.WANG Zhongqi,XIE Junfei,SHI Zhaoji.Introduction to earthquake engineering geology[M].Beijing:Seismological Press,1983.
[4]高玉峰,刘汉龙,朱伟.剪切波速对砂土层地震反应的影响[J].工程勘察,2001,(1):39-42.GAO Yufeng,LIU Hanlong,ZHU Wei,et al.Influence of shear wave velocity on the seismic response of sand ground[J].Geotechnical Investigation&Surveying,2001,1:39-42.
[5]刘红帅,薄景山,吴兆营,等.土体参数对地表加速度峰值和反应谱的影响[J].地震研究,2005,28(2):167-171.LIU Hongshuai,BO Jingshan,WU Zhaoying,et al.Effects of soil parameters on ground surface acceleration peak and response spectra[J].Journal of Seismological Research,2005,28(2):167-171.
[6]陈国兴,刘雪珠,王炳辉.土动力参数变异性对深软场地地表地震动参数的影响[J].防灾减灾工程学报,2007,27(1):1-10.CHEN Guoxing,LIU Xuezhu,WANG Binghui.Effect of variability of soil dynamic parameters on ground motion parameters for deep soft sites[J].Journal of Disaster Prevent ion and Mitigation Engineering,2007,27(1):1-10.
[7]孙锐,袁晓铭,刘晓健.动剪切模量比与剪切波速对地震动影响及等量关系研究[J].岩土工程学报,2009,31(8):1267-1274.SUN Rui,YUAN Xiaoming,LIU Xiaojian.Effects of dynamic shear modulus ratio and velocity on surface ground motion and their equivalent relations[J].Chinese Journal of Geotechnical Engineering,2009,31(8):1267-1274.
[8]RATHJE E M,KOTTKE A R,TRENT W L.Influence of input motion and site property variabilities on seismic site response analysis[J].Journal of Geotechnical And Geoenvironmental Engineering,2010,136(4):607-619.
[9]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB17741-2005工程场地地震安全性评价[S].北京:中国标准出版社,2005.General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China,Standardization Administration of the People's Republic of China.GB17741-2005 Seismic safety evaluation of engineering sites[S].Beijing:China Standardization Press,2005.
[10]廖振鹏.地震小区划(理论与实践)[M].北京:地震出版社,1989.LIAO Zhenpeng.Seismic microzonation[M].Beijing:Seismological Press,1989.
[11]中华人民共和国建设部,国家质量监督检验检疫总局.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.Ministry of Construction of the People's Republic of China,General Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China.Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2001.
[12]袁晓铭,孙锐,孙静等.常规土类动剪切模量和阻尼比试验研究[J].地震工程与工程振动,2000,20(4):133-139.YUAN Xiaoming,SUN Rui,SUN Jing,et al.Laboratory experimental study on dynamic shear modulus ratio and damping ratio of soils[J].Earthquake Engineering and Engineering Vibration,2000,20(4):133-139.
[13]王绍博,丁海平.土动力参数对土层动力反应的影响[J].地震工程与工程振动,2001,21(1):105-108.WANG Shaobo,DING Ha-ping.Effect of soil dynamic parameters on seismic responses of soil layers[J].Earthquake Engineering and Engineering Vibration,2001,21(1):105-108.
[14]孙静,袁晓铭,孙锐.土动剪切模量和阻尼比的推荐值和规范值的合理性比较[J].地震工程与工程振动,2004,24(2):125-133.SUN Jing,YUAN Xiao-ming,SUN Rui.Reasonability comparison between recommended and code values of dynamic shear modulus and damping ratio of soils[J].Earthquake Engineering and Engineering Vibration,2004,24(2):125-133.
[15]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.GUO Xiaoyun,BO Jingshan,BA Wenhui,et al.Sectional least square fitting method for calibrating seismic design response spectrum[J].World Earthquake Engineering,2012,28(3):29-33.
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