CAJ | 학술논문

运用动态子结构固定界面模态综合法在ANSYS有限元分析软件中建立隧道地基耦合动力学模型，分析地铁列车荷载作用下隧道和地基表面的动力响应；通过与有限元整体建模分析法进行比较，验证动态子结构法的准确度。探讨固定界面模态综合法中主模态截断数与分析频率之间的关系，并讨论地基子结构模型中人工边界的施加问题。计算表明：固定界面模态综合法能够明显地减少建模及计算工作量，缩短计算时间，减少存储空间，且具有较高的精度，可在地铁环境振动分析中推广使用。
운용동태자결구고정계면모태종합법재ANSYS유한원분석연건중건립수도지기우합동역학모형，분석지철열차하재작용하수도화지기표면적동력향응；통과여유한원정체건모분석법진행비교，험증동태자결구법적준학도。탐토고정계면모태종합법중주모태절단수여분석빈솔지간적관계，병토론지기자결구모형중인공변계적시가문제。계산표명：고정계면모태종합법능구명현지감소건모급계산공작량，축단계산시간，감소존저공간，차구유교고적정도，가재지철배경진동분석중추엄사용。
A dynamic model for the tunnel-ground coupling system was established,using the fixed-interface component mode synthesis combining with the dynamic substructure method in the ANSYS software,to analyze the dynamic responses of the tunnel and the ground surface due to the metro train load.The accuracy of the dy-namic substructure method was validated by comparing with the whole finite element model.The relationship be-tween the number of the normal mode truncation and the analysis frequency in the fixed -interface component mode synthesis was discussed.In addition,the issue of the artificial boundary application was explored in the ground sub-structuring model.The computational results prove that the fixed-interface component mode syn-thesis can significantly reduce the computational efforts,shorten the calculation time,reduce the storage space, and hence can be used to analyze the subway environment vibration.