双轴对称框架土结构体系地震输入及地震反应特征分析
发布时间：2018-09-07 13:10
【摘要】：合理的确定地震输入模型对高层建筑进行地震安全性评价极其重要。本文通过对10层、20层、30层双轴对称高层框架建筑分别建立了不考虑土-结构相互作用(简称SSI)以及考虑土-结构相互作用两种分析模型确定地震动输入,基于这两种分析模型又分别考虑到了场地的线性和和非线性特征。通过计算得到比较四种模型确定地震输入的差异及不同地震输入下上部框架结构地震反应的差异。研究表明了不同地震输入模型对结构地震输入及地震反应有一定影响。本文主要工作如下：1.在总结已有有限元方法的基础上,改进了高层建筑SSI体系地震反应分析的时域显式有限元过程。2.提出了上部结构简化为集中质量串模型的方法,通过讨论框架结构模型和质量串模型的自振特性,来验证简化建模的合理性。3.将谱比法推广到SSI体系考虑场地非线性特征中。计算和分析各种地震输入模型的地震动特征,总结地震动输入规律,研究确定高层结构合理地震输入的方法。4.对比分析各地震输入模型的高层框架结构的地震反应特征,总结其地震反应及其地震作用规律,研究高层结构合理设计准则。5.对本文工作进行了总结并提出对未来工作的展望。
[Abstract]:It is very important to determine the earthquake input model reasonably to evaluate the seismic safety of high-rise buildings. In this paper, two kinds of analytical models, soil structure interaction (SSI) and soil structure interaction (SSI), are established to determine the input of ground motion for 10 stories, 20 stories and 30 stories of double axisymmetric tall frame buildings, respectively. Based on these two models, the linear and nonlinear characteristics of the site are taken into account respectively. The difference of earthquake input between four models and the difference of seismic response of superframe structure under different earthquake input are obtained by calculation. The results show that different seismic input models have certain influence on structural earthquake input and seismic response. The main work of this paper is as follows: 1. On the basis of summarizing the existing finite element methods, the explicit finite element process. 2. 2 in time domain for seismic response analysis of SSI system of high-rise buildings is improved. A method of simplifying superstructure to lumped mass string model is proposed. The rationality of simplified modeling is verified by discussing the natural vibration characteristics of frame structure model and mass string model. The spectral ratio method is extended to the SSI system considering the nonlinear characteristics of the site. The characteristics of ground motion of various earthquake input models are calculated and analyzed, the law of ground motion input is summarized, and the method of determining reasonable earthquake input of high-rise structures is studied. The seismic response characteristics of high-rise frame structures with different seismic input models are analyzed, the seismic response and its seismic action are summarized, and the reasonable design criterion of high-rise structures is studied. The work of this paper is summarized and the prospect of future work is put forward.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU311.3;TU435
本文编号：2228354
[Abstract]:It is very important to determine the earthquake input model reasonably to evaluate the seismic safety of high-rise buildings. In this paper, two kinds of analytical models, soil structure interaction (SSI) and soil structure interaction (SSI), are established to determine the input of ground motion for 10 stories, 20 stories and 30 stories of double axisymmetric tall frame buildings, respectively. Based on these two models, the linear and nonlinear characteristics of the site are taken into account respectively. The difference of earthquake input between four models and the difference of seismic response of superframe structure under different earthquake input are obtained by calculation. The results show that different seismic input models have certain influence on structural earthquake input and seismic response. The main work of this paper is as follows: 1. On the basis of summarizing the existing finite element methods, the explicit finite element process. 2. 2 in time domain for seismic response analysis of SSI system of high-rise buildings is improved. A method of simplifying superstructure to lumped mass string model is proposed. The rationality of simplified modeling is verified by discussing the natural vibration characteristics of frame structure model and mass string model. The spectral ratio method is extended to the SSI system considering the nonlinear characteristics of the site. The characteristics of ground motion of various earthquake input models are calculated and analyzed, the law of ground motion input is summarized, and the method of determining reasonable earthquake input of high-rise structures is studied. The seismic response characteristics of high-rise frame structures with different seismic input models are analyzed, the seismic response and its seismic action are summarized, and the reasonable design criterion of high-rise structures is studied. The work of this paper is summarized and the prospect of future work is put forward.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU311.3;TU435
【参考文献】
相关期刊论文 前4条
1 齐鑫;肖遥;赵晓辉;;土层地震反应中软弱夹层对加速度反应谱的影响[J];防灾减灾学报;2012年03期
2 廖振鹏,黄孔亮,杨柏坡,袁一凡;暂态波透射边界[J];中国科学(A辑 数学 物理学 天文学 技术科学);1984年06期
3 孟焕陵,沈蒲生;倒三角形荷载作用下框剪结构中剪力墙的合理数量[J];四川建筑;2004年02期
4 孟焕陵,沈蒲生;均布荷载及集中荷载作用下框-剪结构中剪力墙的合理数量[J];华中科技大学学报(城市科学版);2004年01期
相关会议论文 前1条
1 沈蒲生;刘杨;孟焕陵;;地震作用下框支剪力墙结构中落地剪力墙的合理数量[A];防震减灾工程研究与进展——全国首届防震减灾工程学术研讨会论文集[C];2004年
相关硕士学位论文 前1条
1 王文斌;叠层橡胶基础隔震结构动力反应研究[D];石河子大学;2006年
，本文编号：2228354
本文链接：https://www.wllwen.com/kejilunwen/diqiudizhi/2228354.html
