基于KiK-net强震台网的土层地震动特性研究
发布时间：2018-07-23 20:19
【摘要】：震害调查资料和理论分析都表明，场地的土层条件对地震动特性具有重要的影响。不同场地土层地震动特性分析，在场地效应研究和结构抗震设计中具有重要的意义。土层的地震动特性研究是场地地震反应分析和场地安全性评价的重要内容，而场地土层的地震动特性参数的确定直接影响工程结构的抗震设计的可靠性。随着地震小区划和地震安全性评价工作的广泛开展，研究不同土层的地震动特性具有重要理论意义和工程应用价值。 目前，国内外土层地震动特性研究主要是基于土体本构关系的理论分析及计算方法。其中，基于等效线性化模型的计算方法应用最为广泛。应用等效线性化计算方法，国内外的研究人员开发了不同的等效线性化计算程序，并在土层地震动特性研究方面取得了一些研究成果。但随着研究的深入，现有方法局限性日益突出，其可靠性有待更多实际资料验证，急需通过实际土层地震动研究更深入了解土层地震动特性。 针对上述问题，本文利用日本KiK-net强震台网的强震观测记录和对应的台站场地数据，根据中国《建筑抗震设计规范》场地类型划分标准，建立了适用于中国的土层地震动实测数据库。在数据库基础之上，利用强震观测记录和场地土层特征参数，统计分析不同场地类别的场地的土层地震动特性，并对不同类别场地的土层地震动特征进行对比分析。 本文的主要工作和成果如下： （1）系统总结了场地土层地震动特性的研究现状及意义，介绍了常用的土层地震动特性研究方法——基于理论计算的研究方法和基于强震记录的研究方法。 （2）按照中国《建筑抗震设计规范》的场地划分标准，从日本KiK-net强震台网中选取11个一类场地和66组强震记录、20个二类场地和139组强震记录、30个三类场地和248组强震记录、9个四类场地和60组强震记录，共计70个场地和513组强震记录，建立了适用于中国的土层地震动实测数据库。 （3）利用选取的强震记录及对应的土层条件，分别分析了不同类别场地的土层特征参数及地震动输入幅值对PGA放大系数和反应谱放大系数的影响。 （4）对不同类别的场地地震动特性进行对比分析，，给出了不同类别场地土层地震动特性的差异性，并给出了初步的拟合关系。
[Abstract]:The investigation data and theoretical analysis show that the soil condition of the site has an important effect on the seismic characteristics. The analysis of ground motion characteristics in different sites is of great significance in the research of site effect and seismic design of structures. The study of ground motion characteristics is an important part of site seismic response analysis and site safety evaluation, and the determination of ground motion characteristic parameters directly affects the reliability of seismic design of engineering structures. With the development of seismic microzonation and seismic safety evaluation, it is of great theoretical significance and engineering application value to study the seismic characteristics of different soil layers. At present, the research of soil motion characteristics is mainly based on the theoretical analysis and calculation method of soil constitutive relation at home and abroad. Among them, the calculation method based on equivalent linearization model is the most widely used. Using the equivalent linearization calculation method, researchers at home and abroad developed different equivalent linearization calculation programs, and obtained some research results in the study of soil motion characteristics. However, with the deepening of the research, the limitations of the existing methods are increasingly prominent, its reliability needs to be verified by more practical data, and it is urgent to understand the characteristics of the soil motion more deeply through the study of the actual ground motion. In view of the above problems, this paper makes use of the strong earthquake observation records of the KiK-net strong earthquake network in Japan and the corresponding site data of the stations, and according to the Chinese Standard for Seismic Design of buildings, the site type classification standard is used. A database of soil motion measurement in China is established. Based on the database, the soil motion characteristics of different sites are statistically analyzed by using the observation records of strong earthquakes and the soil layer characteristic parameters, and the soil motion characteristics of different sites are compared and analyzed. The main work and achievements of this paper are as follows: (1) the research status and significance of the ground motion characteristics of the site are summarized systematically. This paper introduces the research methods of soil ground motion characteristics, which are based on theoretical calculation and strong earthquake records. (2) according to the site division standard of China Code for aseismic Design of buildings, From the KiK-net strong earthquake network in Japan, 11 sites and 66 groups of strong earthquake records, 20 second class sites and 139 sets of strong earthquake records, 30 third class sites and 248 sets of strong earthquake records, 9 types of sites and 60 sets of strong earthquake records are selected. A total of 70 sites and 513 sets of strong earthquake records have been established, and a soil ground motion survey database suitable for China has been established. (3) using the selected strong earthquake records and the corresponding soil conditions, The effects of soil layer characteristic parameters and ground motion input amplitude on PGA magnification factor and response spectrum magnification factor of different sites are analyzed respectively. (4) the characteristics of ground motion of different types of sites are compared and analyzed. The difference of ground motion characteristics of different sites is given, and the preliminary fitting relation is given.
【学位授予单位】：中国地震局工程力学研究所
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P315.9;TU435
本文编号：2140531
[Abstract]:The investigation data and theoretical analysis show that the soil condition of the site has an important effect on the seismic characteristics. The analysis of ground motion characteristics in different sites is of great significance in the research of site effect and seismic design of structures. The study of ground motion characteristics is an important part of site seismic response analysis and site safety evaluation, and the determination of ground motion characteristic parameters directly affects the reliability of seismic design of engineering structures. With the development of seismic microzonation and seismic safety evaluation, it is of great theoretical significance and engineering application value to study the seismic characteristics of different soil layers. At present, the research of soil motion characteristics is mainly based on the theoretical analysis and calculation method of soil constitutive relation at home and abroad. Among them, the calculation method based on equivalent linearization model is the most widely used. Using the equivalent linearization calculation method, researchers at home and abroad developed different equivalent linearization calculation programs, and obtained some research results in the study of soil motion characteristics. However, with the deepening of the research, the limitations of the existing methods are increasingly prominent, its reliability needs to be verified by more practical data, and it is urgent to understand the characteristics of the soil motion more deeply through the study of the actual ground motion. In view of the above problems, this paper makes use of the strong earthquake observation records of the KiK-net strong earthquake network in Japan and the corresponding site data of the stations, and according to the Chinese Standard for Seismic Design of buildings, the site type classification standard is used. A database of soil motion measurement in China is established. Based on the database, the soil motion characteristics of different sites are statistically analyzed by using the observation records of strong earthquakes and the soil layer characteristic parameters, and the soil motion characteristics of different sites are compared and analyzed. The main work and achievements of this paper are as follows: (1) the research status and significance of the ground motion characteristics of the site are summarized systematically. This paper introduces the research methods of soil ground motion characteristics, which are based on theoretical calculation and strong earthquake records. (2) according to the site division standard of China Code for aseismic Design of buildings, From the KiK-net strong earthquake network in Japan, 11 sites and 66 groups of strong earthquake records, 20 second class sites and 139 sets of strong earthquake records, 30 third class sites and 248 sets of strong earthquake records, 9 types of sites and 60 sets of strong earthquake records are selected. A total of 70 sites and 513 sets of strong earthquake records have been established, and a soil ground motion survey database suitable for China has been established. (3) using the selected strong earthquake records and the corresponding soil conditions, The effects of soil layer characteristic parameters and ground motion input amplitude on PGA magnification factor and response spectrum magnification factor of different sites are analyzed respectively. (4) the characteristics of ground motion of different types of sites are compared and analyzed. The difference of ground motion characteristics of different sites is given, and the preliminary fitting relation is given.
【学位授予单位】：中国地震局工程力学研究所
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P315.9;TU435
【参考文献】
相关期刊论文 前10条
1 周锡元,苏经宇;烈度、震中距和场地条件对地面运动反应谱的影响[J];地震工程与工程振动;1983年02期
2 周雍年;震级、震中距和场地条件对地面运动反应谱的影响[J];地震工程与工程振动;1984年04期
3 薄景山,李秀领,刘德东,刘红帅;土层结构对反应谱平台值的影响[J];地震工程与工程振动;2003年04期
4 薄景山,吴兆营,翟庆生,齐文浩;三种土层结构反应谱平台值的统计分析[J];地震工程与工程振动;2004年02期
5 薄景山;齐文浩;刘红帅;刘博;刘德东;孙有为;;汶川特大地震汉源烈度异常原因的初步分析[J];地震工程与工程振动;2009年06期
6 李媛媛;徐扬;吴东;;覆盖层厚度对反应谱峰值的影响[J];地震地磁观测与研究;2006年04期
7 谢礼立,钱渠炕,李沙白;数字化噪声对强震记录的影响及其消除方法[J];地震学报;1982年04期
8 胡进军,谢礼立;地震动幅值沿深度变化研究[J];地震学报;2005年01期
9 刘红帅,薄景山,吴兆营,刘德东;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年02期
10 孙建华,张提波,沙安;台湾“九二一”大地震概况[J];工程抗震;1999年04期
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