【摘要】 基于增量Ｗｉｌｓｏｎθ法推导出增量形式的结构动力方程的数值迭代形式，并针对非线性结构的静动力数值分析提出了求解非线性方程的改进增量方法．改进后的增量法，理论简单，程序实现方便，而且能更好地控制每步迭代引入的误差，能模拟整个加荷过程，并成功地应用于土石坝与地基的静动态相互作用研究．更多还原

【Abstract】 In the paper,structural dynamic equations are derived in the form of incremental numerical iteration based upon the incremental Wilson θ method.A new modified incremental method is proposed to solve non linear equations.The modified method is simpler in theory,more convenient in implementation.The errors produced in every step can be controlled in an effective way, and the present method can simulate the construction procedure.The theories have been successfully applied to static and dynamic analysis of embankment dam foundation systems.更多还原