北川县城土层特性对地震动的影响
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摘要
作为场地条件之一的土层特性(土层结构、土动力参数)对地表地震动参数的影响研究是一项具有重要理论和工程应用意义的研究课题。选择汶川地震强震区典型的钻孔资料和强震记录,以北川县城地勘标准孔和安县塔水波为基础,运用土层等效线性化程序计算了140个工程场地计算剖面,定量分析了土层特性改变对反应谱αmax、Tg及地震影响系数差△α影响的特点及规律。
The effect of soil layer characteristics(soil layer structure,dynamic parameters,etc),being one of the site conditions,on the seismic ground motion is a research subject that has both theoretical and application value.Based on typical drill hole data and strong motion records of Wenchuan earthquake meizoseismal area,the standard soil profiles of Beichuan County and Tashui strong motion record in Anxian County,and using the equivalent linearization program,this paper calculated 140 soil profiles of engineering sites,quantitatively analyzed the features and laws of influence of the soil layer characteristic change on αmax,Tg and △α(the difference between two α's) that affect the engineering structure.
The effect of soil layer characteristics(soil layer structure,dynamic parameters,etc),being one of the site conditions,on the seismic ground motion is a research subject that has both theoretical and application value.Based on typical drill hole data and strong motion records of Wenchuan earthquake meizoseismal area,the standard soil profiles of Beichuan County and Tashui strong motion record in Anxian County,and using the equivalent linearization program,this paper calculated 140 soil profiles of engineering sites,quantitatively analyzed the features and laws of influence of the soil layer characteristic change on αmax,Tg and △α(the difference between two α's) that affect the engineering structure.
引文
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[10]王皆伟.四川地区砂卵石土动力特性试验研究[D].绵阳:西南科技大学,2006.WANG Jiewei.Dynamic Triaxial Tests and Analysis of Sandy Pebble Soil in Sichuan[D].Mianyang:Southwest University of Science andtechnology,2006.(in Chinese)
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[13]刘晓健.土动力性能对地震动影响研究及测试标准初探[D].哈尔滨:中国地震局工程力学研究所,2007.LI Xiaojian.Effect of Soil Dynamic Feature on Ground Motion and its Testing Standard[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration,2007.(in Chinese)
[2]薄景山,李秀领,李山有,等.场地条件对地震动影响研究的若干进展[J].世界地震工程,2003,19(2):11-15.BO Jingshan,LIU Xiuling,LI Shanyou,et al.Some progress of study on the effect of site conditions on ground motion[J].World EarthquakeEngineering,2003,19(2):11-15.(in Chinese)
[3]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.LI Xiaojun,PENG Qing.Calculation and analysis of earthquake ground motion parameters for different site categories[J].Earthquake Engineeringand Engineering Vibration,2001,21(1):29-36.(in Chinese)
[4]薄景山,翟庆生,刘红帅,等.场地分类及其在我国的演变[J].自然灾害学报,2004,13(3):44-49.BO Jingshan,ZHAI Qingsheng,LIU Hongshuai,et al.Site classification and its evolution in Chinese code for seismic design of buildings[J].Journal of Natural Disasters,2004,13(3):44-49.(in Chinese)
[5]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 of Soil Layer Construction on Effects of Surface Ground Motion Parameters[D].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2003.(in Chinese)
[6]齐文浩,薄景山.土层地震反应等效线性化方法综述[J].世界地震工程,2007,23(4):221-226.QI Wenhao,BO Jingshan.Summarization on equivalent linear method of seismic responses for soil layers[J].World Earthquake Engineering,2007,23(4):221-226.(in Chinese)
[7]中国地震局震害防御司编.汶川8.0级地震未校正加速度记录[M].北京:地震出版社,2008.Damage Defense Department of CEA.Wenchuan Ms8.0 Earthquakes’Acceleration Record(Not Adjusted)[M].Beijing:China EarthquakePress,2008.(in Chinese)
[8]袁晓铭,孙锐,孙静,等.常规土类动剪切模量比和阻尼比试验研究[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.(in Chinese)
[9]王汝恒,贾彬,邓安福,等.砂卵石土动力特性的动三轴试验研究,岩石力学与工程学报[J].2006,25(增2):4059-4064.WANG Ruheng,JIA Bin,DENG Anfu,et al.Dynamic triaxial testing study on dynamic characteristics of sandy pebble soil[J].Rock Mechanicsand Engineering,2006,25(S2):4059-4064.(in Chinese)
[10]王皆伟.四川地区砂卵石土动力特性试验研究[D].绵阳:西南科技大学,2006.WANG Jiewei.Dynamic Triaxial Tests and Analysis of Sandy Pebble Soil in Sichuan[D].Mianyang:Southwest University of Science andtechnology,2006.(in Chinese)
[11]四川赛斯特科技有限公司.绵阳市城区地震小区划报告[R].成都:四川科技出版社,2007.Sichuan SaiSiTe technique Limited company.Mianyang City Earthquake Mcrozonation Rport[R].Chengdu:Sichuan Science and TechnologyPress,2007.(in Chinese)
[12]薄景山,迟宝明.场地条件科学考察烈度异常组工作报告[R].北京:地震出版社,2008.BO Jingshan,CHI Baoming.Site Cnditions Sientific Epedition Intensity Unusual Group Work Report[R].Beijing:Earthquake Press,2008.(inChinese)
[13]刘晓健.土动力性能对地震动影响研究及测试标准初探[D].哈尔滨:中国地震局工程力学研究所,2007.LI Xiaojian.Effect of Soil Dynamic Feature on Ground Motion and its Testing Standard[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration,2007.(in Chinese)
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