城市地铁车站地下结构地震反应分析

发布时间：2018-07-10 07:39

本文选题：地铁车站结构 + 地震反应　；参考：《辽宁工程技术大学》2013年硕士论文

【摘要】：地震是困扰人类的一大自然灾害。为了减轻地震造成的损失，一个主要途径就是做好工程抗震，而且，特别要强调的是地下结构的抗震。对于地下结构的抗震，目前国内外的研究还处于探索研究阶段，没有现成的设计规范，而现在一线城市都在大力兴建地铁，因此，分析地铁车站结构的抗震性能对维护城市生命线工程的安全具有重要的现实意义。本文以沈阳工业展览馆三层岛式地铁车站结构为背景，在总结和分析国内外地下结构和地上结构震害和抗震设计方法的基础上，借助ADINA有限元软件，对地铁车站结构的地震响应进行分析：建立有限元模型后，对地铁车站结构进行静力分析，计算出结构的不利位置，根据地震响应系数曲线对模型进行谱反应分析，计算结构在地震反应谱作用下的层间位移；对地铁车站结构进行动力分析，选取符合场地条件的三条不同的地震波，对地铁车站结构进行水平向多遇地震作用分析，主要包括内力，层间位移和应力的分析，，然后对三条地震波作用下的分析结果进行比较；将这三条地震波按加速度峰值进行等比例调幅后输入，对该地铁车站结构进行位移响应分析，并将所得结果和结构在多遇地震动下的结果进行比较；再选取El-centro波的竖向地震波，对地铁车站结构进行水平竖向耦合作用下的地震反应分析，并将其结果与仅考虑水平地震作用时的结果进行比较。
[Abstract]:Earthquake is a natural disaster besetting human beings. In order to reduce the damage caused by earthquake, one of the main ways is to do a good job of earthquake resistance, and the special emphasis should be placed on the earthquake resistance of underground structures. For the earthquake resistance of underground structures, the domestic and foreign research is still in the stage of exploration and research, there is no ready-made design code, and now the first-tier cities are vigorously building subway, so, It is of great practical significance to analyze the seismic performance of subway station structure to maintain the safety of urban lifeline engineering. On the basis of summarizing and analyzing the earthquake damage and seismic design methods of underground structure and above ground structure at home and abroad, this paper takes the three-story subway station structure of Shenyang Industrial Exhibition Center as the background, and makes use of Adina finite element software. The seismic response of subway station structure is analyzed. After establishing the finite element model, the static analysis of subway station structure is carried out, the unfavorable position of the structure is calculated, and the spectral response of the model is analyzed according to the seismic response coefficient curve. The dynamic analysis of subway station structure is carried out, and three different seismic waves in accordance with the site conditions are selected to analyze the horizontal earthquake action of subway station structure. It mainly includes the analysis of internal force, interlayer displacement and stress, and then compares the results of the analysis under the action of three seismic waves, and then adjusts the amplitude of the three seismic waves in equal proportion according to the peak acceleration. The displacement response of the subway station structure is analyzed, and the results obtained are compared with those of the structure under frequent ground motion, and then the vertical seismic wave of El-centro wave is selected. The seismic response analysis of subway station structure under horizontal vertical coupling is carried out, and the results are compared with those when only horizontal seismic action is considered.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU311.3;TU921

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