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ABAQUS作为一种功能强大的工程分析模拟软件,在动力响应分析中具有很大优势.为此,将黏弹性边界单元与大型商业软件ABAQUS相耦合,利用ABAQUS实现对黏弹性边界的模拟,通过算例比较了结构在黏弹性边界、黏性边界和固定边界条件下的动力响应,并在考虑黏弹性边界影响的情况下,对一实际水闸-地基系统进行了地震响应分析.分析结果表明:黏弹性边界精度明显高于其他2种边界,可用于结构-土动力相互作用分析;辐射阻尼能够显著减小结构地震响应30%~40%.
ABAQUS as a powerful engineering analysis simulation software has great advantages in dynamic response analysis.For this reason, the viscoelastic boundary element is coupled with the large commercial software ABAQUS, and the simulation of viscoelastic boundary is realized by ABAQUS, The dynamic response of the structure under viscoelastic boundary, viscous boundary and fixed boundary conditions is compared and the seismic response analysis of an actual sluice-foundation system is carried out considering the influence of viscoelastic boundary. The results show that: The elastic boundary precision is obviously higher than the other two kinds of boundary, which can be used in the structure-soil dynamic interaction analysis. The radiation damping can reduce the seismic response of the structure by 30% ~ 40%.