【摘要】 本文通过数值计算,在线弹性范围内初步分析了土层地震反应随不同侧向人工边界、有限土域取值范围、土介质的阻尼系数的变化情况;采用滞后阻尼假定,探讨了在土层时域分析中如何由滞后阻尼系数形成阻尼矩阵,给出了一个阻尼系数转换频率取值的经验公式。在此研究基础上编制了二维有限元SR2D计算程序。更多还原

【Abstract】 Based on the results from the numerical calculation, some aspects of the seismic response of soil layer varying with artificial boundary, the scope of soil region, damping coefficient etc., are discussed. With linear visco-elastic assumption analytical solution in time domain and the formula of transforming frequency derived from lag-damping coefficient are given. Finally, we developed the computer program SR2D which may perform 2-dimensional finite element analysis.更多还原