装配式地下结构在地铁车站中的应用研究

Research on the Application of Assembled Underground Structures in Subway Stations

针对装配式地铁车站抗震性能较差的问题,结合工程案例建立有限元模拟模型,对作用在不同地震动作用下的装配式地铁结构的易损性进行研究。结果表明,土层状态为坚硬场地的装配式结构破坏状态概率较土层软弱场地更低,可以有效地提高地下车站结构的抗震性能;在中硬场工况下,近场脉冲型地震动表现出更强的破坏势,而在软弱场工况下,远场长周期地震动的破坏势更加明显。

In response to the problem that the seismic performance of assembled subway stations is poor,a finite element simulation model was established using as an engineering case to study the vulnerability of assembled subway structures under different ground motions.The results show that the probability of failure of assembled structures in hard soil layers is lower than that in soft soil layers,which can effectively improve the seismic performance of underground station structures;under medium to hard field conditions,near-field pulse ground motions exhibit stronger destructive potential,while under weak field conditions,the destructive potential of far-field long period ground motions is more pronounced.