【摘要】 基于ABAQUS对某明挖地铁站进行了三维动力时程分析。该明挖站空间较复杂,横断面为变截面,需要进行罕遇地震下的抗震验算,并考虑土–结构动力相互作用。模型分别采用ANSYS和ABAQUS进行建模和分析,通过自行编制的接口程序将模型从ANSYS导入ABAQUS。土体采用了三维黏弹性动力本构,边界采用黏弹性动力边界条件,基岩波以加速度从基底输入。计算结果表明,该明挖地铁站中柱底部边缘混凝土纤维进入塑性状态,局部混凝土开裂,没有出现倒塌破坏。该计算方法可以为类似工程提供参考。更多还原

【Abstract】 Three-dimensional dynamic analysis of an open excavation subway station under earthquake is carried out.The space of subway station is complex,and the transverse section is variable.Major earthquake analysis must be performed.Soil-structure dynamic interaction is also need to be considered.The subway station is modeled and analyzed by means of the software ANSYS and ABAQUS respectively.The ANSYS model is introduced into ABAQUS based on a programming interface coded by the authors.A three-dimensional viscoelastic dynamic constitutive model is used to simulate the soils.Three-dimensional viscoelastic artificial boundary is applied.Seismic wave of bedrock is input as the acceleration.The results demonstrate that edge concrete fiber at the bottom of interior column enters into the plastic stage,and local damage but no collapse damage is found.The proposed method may help engineers in similar projects.更多还原