【摘要】 针对地震作用下地铁结构动力学响应的安全问题,基于弹性地基梁理论,利用大型通用有限元计算软件ADINA建立了三层岛式地铁车站结构有限元计算模型,研究地铁的多遇地震与罕遇地震的动力学响应的影响因素,对车站进行了静力分析、谱反应分析以及动力时程分析,总结了地铁结构的地震响应规律.分析结果表明:多遇地震作用下,随着高度的增加地铁车站结构的层间位移随之增大,梁柱连接处的应力较大,楼板跨中节点的应力最小;罕遇地震作用下地铁结构变化有着相似的趋势,但是罕遇地震的位移要远大于多遇地震下的水平位移.更多还原

【Abstract】 For the safety problem of the subway structure’s dynamic response under seismic loading, based on the elastic foundation beam theory, this paper established the finite element three calculation model of subway station structure layer island by using the large general finite element software ADINA, studied the influence factors of dynamic response of the frequently occurred earthquakes and rarely occurred earthquake, and carried out static analysis, spectrum response analysis and dynamic time history analysis to the station, and summarized the earthquake response of subway structure. The analysis results show that with the more severe earthquakes, story drift increases with the increase of height of subway station structure, and stress of the beam-column joints is larger, and the stress of floor across nodes is the minimum; under the action of severe earthquake the subway structure change had a similar trend, but the displacement of rarely occurred earthquake is much greater than the horizontal displacement under severe earthquakes.更多还原