CAJ | 학술논문

本文提出了一种分析三维土-结构动力相互作用的时域直接方法.该方法采用集中质量显式有限元和透射人工边界模拟无限域地基,通过编制的FORTRAN程序实现;采用ANSYS软件对上部结构进行建模分析,并通过FORTRAN程序对ANSYS软件的调用,实现了土与结构系统在地震作用下的整体分析.该方法为显隐式相结合的方法,地基和上部结构可采用不同的时间步距进行分析,可大大提高效率.通过两算例,验证了该方法的可行性.
본문제출료일충분석삼유토-결구동력상호작용적시역직접방법.해방법채용집중질량현식유한원화투사인공변계모의무한역지기,통과편제적FORTRAN정서실현;채용ANSYS연건대상부결구진행건모분석,병통과FORTRAN정서대ANSYS연건적조용,실현료토여결구계통재지진작용하적정체분석.해방법위현은식상결합적방법,지기화상부결구가채용불동적시간보거진행분석,가대대제고효솔.통과량산례,험증료해방법적가행성.
A direct method for analysis of three-dimensional soil-structure dynamic interaction is proposed in this pa-per. The unbounded soil is modeled by lumped-mass finite element and transmitting boundary, and the structure is modeled by ANSYS software. The responses of the soil-structure system under earthquake can be obtained by com-bing FORTRAN code with ANSYS software. The explicit-implicit integration scheme is used in this hybrid method, and the efficiency can be greatly improved by using different time steps in soil and structure analysis. Two examples are given to demonstrate the feasibility of this method.