【作者】 田雪娟；

【导师】 朱尔玉；

【作者基本信息】 北京交通大学 ， 防灾减灾工程及防护工程， 2010， 硕士

【摘要】 随着经济的迅猛发展和城市交通的日益拥挤,我国已经进入了地铁工程建设的黄金时代。我国是一个多地震的国家,但到目前为止我国尚缺少完善的地铁地下结构抗震分析方法和独立的地铁地下结构抗震设计规范。以往的震害表明,地铁地下结构一旦遭受震破坏,将会给地震应急和震后修复工作带来极大的困难,并且地铁地下结构完全埋深于土中,土—地下结构的动力相互作用将明显改变场地周围土体的动力反应特性,进而影响上部已建和拟建建筑结构的地震反应特征,因而,研究地铁地下结构抗震问题具有重要的理论意义和工程应用价值。本文以北京地铁7号线达官营车站为工程背景,选取了车站主体结构建立合适的有限元模型,并进行静力分析。然后分别采用了谱分析和动力时程分析两种不同的计算方法对车站进行抗震计算分析,对静力计算和谱分析计算、谱分析和时程分析的计算结果分别予以对比,得出在水平地震力作用下车站结构的最不利受力位置。本文的主要结论包括：地铁车站结构的弯矩在静力时较小,在地震作用下其增幅较大,动力响应显著。地铁结构需要进行抗震计算,反应位移法、动力时程分析法均能适用于地下建筑结构的抗震分析。在水平地震力作用下,地铁车站结构中柱的地震轴力较大,是主要的承压构件,结构顶板的变形和应力比较大,容易发生破坏。因此在设计和施工过程中,应对上述部位予以足够的重视。更多还原

【Abstract】 With the development of economy and traffic becoming busier, the construction of subway receives its golden age. China is a seismic active country, however,so far, there is still lack of a mature seismic analysis method and design code for underground subway structures in China. The previous seismic damages of underground structures prove that restoration of it is difficult as soon as it is damaged by earthqueke. For subway structure is embedded in soil, it is obvious that the effect of soil-structure dynamic interaction can change the design parameters of ground motion in the soft site, then influence the seismic response of built and ready-built structure. Therefore, anti-seismic of subway structures is important both in theoretical research andengineering.In this paper, Daguanying station of subway No.7 in beijing is taken as engineering background, the station structure is selected in with finite element numerical modeling, doing straic analysis. Then calculating using different ways by reaction spectral analysis and -history analysis, comparing the static calculation result to reaction spectral, reaction spectral to time-history, we can take the conclusions that the max stressing place of the station structure in seismic force horizontal. At last, based on the calculation, the r ts can provide a useful guide for the seismic design of the subway station struc. The main conclusions of this study could be summarized as follows:The bending moment of structure is small under static action, and increases quickly under ismic action. The station structure must be calculated by seismic analysis. Response displacement method, dynamic time-history analysis method can be applied to seistic analysis of underground construction. The axial pressure of column is big, under seismic action, at the top of structure; the stress and strain are bigger than other points, the top of structure and are very incidental to be destroyed. As a result, in the course of designing and construction, more attention should be paid to them.更多还原