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Analysis of 3-D seismic response of subway station structures in Wuhan

机译：武汉地铁车站结构三维地震响应分析

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摘要

A 3-D numerical model of a subway station structure was established and its seismic response was studied under the excitation of the Wuhan artificial wave in which 10% exceed the probability in 100 years. The research content of the paper includes the study of the seismic response of the station structure along its longitudinal direction, the analysis of the structure deformations and moment increments caused by the seismic load. It was showed that: 1) the cross-section whose position is 2.2 times of width of the station structure away from the end walls can be analyzed using the assumption of plain strain; 2) the maximum moment values and deformations were both located at the middle-span along the longitudinal direction; 3) seismic load has the maximum effect on the column moment; 4) symmetrical structure is helpful to enhance its aseismatic ability.
机译：建立了地铁车站结构的三维数值模型，并在武汉人工波的激发下研究了其地震响应，武汉人工波在100年内超过概率10％。本文的研究内容包括对车站结构沿其纵向的地震响应的研究，对地震荷载引起的结构变形和弯矩增量的分析。结果表明：1）可以用平面应变的假设来分析其位置是站结构宽度的2.2倍于端壁的横截面。 2）最大力矩值和变形量均沿纵向位于中跨； 3）地震荷载对柱矩有最大影响； 4）对称结构有助于增强其抗震能力。

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