表层土结构对地表地震动的影响研究
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摘要
场地覆盖土层的结构特别是近地表土层结构的变化对地表地震动的影响很大,针对表层土结构的变化对地表地震动的影响进行研究。根据场地实际钻孔资料,选取和构造了199个场地计算剖面,利用工程上广泛应用的一维等效线性化波动分析方法,计算了不同场地类别(Ⅰ、Ⅱ、Ⅲ类)在3个典型地震动时程、但不同幅值输入情况下地表的峰值加速度的变化情况。通过对计算结果的分析,总结了表层土厚度的变化和剪切波速的变化对不同场地地表峰值加速度的规律性影响。
The surface soil structure,especially the near top one,affects ground motion characters greatly,which is studied in this paper in detail by equivalent linear method under three typical ground motion inputs with varying peak acceleration amplitudes.The results from 199 soil profile soil responses show the preliminary effect regulation of varying near surface soil structures and shear velocity on ground motion.
The surface soil structure,especially the near top one,affects ground motion characters greatly,which is studied in this paper in detail by equivalent linear method under three typical ground motion inputs with varying peak acceleration amplitudes.The results from 199 soil profile soil responses show the preliminary effect regulation of varying near surface soil structures and shear velocity on ground motion.
引文
[1]李秀领.土层结构对地表地震动参数影响的研究[D].哈尔滨:中国地震局工程力学研究所,2003.LI Xiuling,Study on the effect of soil layer conditions on the seismic ground motion[D].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2003.(in Chinese)
[2]薄景山,李秀领,刘红帅.土层结构对地表加速度峰值的影响[J].地震工程与工程振动,2003,23(3):35-40.BO Jingshan,LI Xiuling,LIU Hongshuai.Effects of layer construction on peak accelerations of ground motions[J].Journal of Earthquake Engineer and Engineering Vibration,2003,23(3):35-40.(in Chinese)
[3]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.BO Jingshan,LI Xiuling,LIU Dedong,et al.Effects of soil layer construction on characteristic periods of response spectra[J].Journal of Earthquake Engineering and Engineering Vibration,2003,23(5):42-45.(in Chinese)
[4]薄景山,李秀领,刘德东,等.土层结构对反应平台值的影响[J].地震工程与工程振动,2003,23(4):29-33.BO Jingshan,LI Xiuling,LIU Dedong,et al.Effects of soil layer construction on platform value of response spectra[J].Journal of Earthquake Engineering and Engineering Vibration,2003,23(4):29-33.(in Chinese)
[5]GB50011-2001建筑抗震设计规范[S].2008.GB50011-2001 Code for Seismic Design of Buildings[S].2008.
[6]Building Seismic Safety Council(BSSC).1997 Edition NEHRP recommended provisions for seismic regulations for new buildings and other Structures[S].FEMA 302/303,Part 1(Provisions)and(Commentary),Developed for the Federal Emdrgency Management Agency,Washington,DC,1998
[7]Dobry R,Borcherdt R D,et al.New site coefficients and site classification system used in recent building seismic code provisions[J].Earthquake Spectra.2000,16(1):41-47.
[8]Kwok A O L,Stewart J P,Hashash Y M A.Nonlinear ground-response analysis of turkey flat shallow stiff-soil site to strong ground motion[J].Bulletin of the Seismological Society of America,2008,98(1):331-343.
[9]李平,薄景山,孙有为.剪切波速差异性对地震反应的影响[J].世界地震工程,2010,26(增刊)133-137.LI Ping,BO Jingshan,SUN Youwei.Shear wave velocity diversity influence on the seismic response[J].World Earthquake Engineering,2010,26(suppl)133-137.(in Chinese)
[10]高玉峰,刘汉龙,朱伟,等.剪切波速对沙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 sand seismic response[J].Engineering Survey,2001(1):39-42.(in Chinese)
[11]孙锐,刘红帅,刘德东.土体动力参数不确定性及影响研究[R].哈尔滨:中国地震局工程力学研究所,2009.SUN Rui,LIU Hongshuai,LIU Dedong.Study on uncertainty and effection of soil dynamic parameter[R].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2003.(in Chinese)
[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):133-138.YUAN Xiaoming,SUN Rui,SUN Jing,et al.Laboratory experimental study in dynamic shear modulus ratio and damping ratio of soils[J].Journal of Earthquake Engineering and Engineering Vibration,2000,20(4):133-138.(in Chinese)
[13]廖振鹏,李小军.地表土层地震反应的等效线性化解法[A].地震小区划-理论与实践[C].北京:地震出版社.1989,141-153.LIAO Zhenpeng,LI Xiaojun.Equivalent liner method of seismic ground motion[A].Earthquake Microzonation-theory and practice[C].Beijing,Earth Press.1989,141-153.(in Chinese)
[2]薄景山,李秀领,刘红帅.土层结构对地表加速度峰值的影响[J].地震工程与工程振动,2003,23(3):35-40.BO Jingshan,LI Xiuling,LIU Hongshuai.Effects of layer construction on peak accelerations of ground motions[J].Journal of Earthquake Engineer and Engineering Vibration,2003,23(3):35-40.(in Chinese)
[3]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.BO Jingshan,LI Xiuling,LIU Dedong,et al.Effects of soil layer construction on characteristic periods of response spectra[J].Journal of Earthquake Engineering and Engineering Vibration,2003,23(5):42-45.(in Chinese)
[4]薄景山,李秀领,刘德东,等.土层结构对反应平台值的影响[J].地震工程与工程振动,2003,23(4):29-33.BO Jingshan,LI Xiuling,LIU Dedong,et al.Effects of soil layer construction on platform value of response spectra[J].Journal of Earthquake Engineering and Engineering Vibration,2003,23(4):29-33.(in Chinese)
[5]GB50011-2001建筑抗震设计规范[S].2008.GB50011-2001 Code for Seismic Design of Buildings[S].2008.
[6]Building Seismic Safety Council(BSSC).1997 Edition NEHRP recommended provisions for seismic regulations for new buildings and other Structures[S].FEMA 302/303,Part 1(Provisions)and(Commentary),Developed for the Federal Emdrgency Management Agency,Washington,DC,1998
[7]Dobry R,Borcherdt R D,et al.New site coefficients and site classification system used in recent building seismic code provisions[J].Earthquake Spectra.2000,16(1):41-47.
[8]Kwok A O L,Stewart J P,Hashash Y M A.Nonlinear ground-response analysis of turkey flat shallow stiff-soil site to strong ground motion[J].Bulletin of the Seismological Society of America,2008,98(1):331-343.
[9]李平,薄景山,孙有为.剪切波速差异性对地震反应的影响[J].世界地震工程,2010,26(增刊)133-137.LI Ping,BO Jingshan,SUN Youwei.Shear wave velocity diversity influence on the seismic response[J].World Earthquake Engineering,2010,26(suppl)133-137.(in Chinese)
[10]高玉峰,刘汉龙,朱伟,等.剪切波速对沙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 sand seismic response[J].Engineering Survey,2001(1):39-42.(in Chinese)
[11]孙锐,刘红帅,刘德东.土体动力参数不确定性及影响研究[R].哈尔滨:中国地震局工程力学研究所,2009.SUN Rui,LIU Hongshuai,LIU Dedong.Study on uncertainty and effection of soil dynamic parameter[R].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2003.(in Chinese)
[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):133-138.YUAN Xiaoming,SUN Rui,SUN Jing,et al.Laboratory experimental study in dynamic shear modulus ratio and damping ratio of soils[J].Journal of Earthquake Engineering and Engineering Vibration,2000,20(4):133-138.(in Chinese)
[13]廖振鹏,李小军.地表土层地震反应的等效线性化解法[A].地震小区划-理论与实践[C].北京:地震出版社.1989,141-153.LIAO Zhenpeng,LI Xiaojun.Equivalent liner method of seismic ground motion[A].Earthquake Microzonation-theory and practice[C].Beijing,Earth Press.1989,141-153.(in Chinese)
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