论文部分内容阅读
本文给出了一种可以近似描绘具有滞回特性的非线性恢复力模型,并经适当简化,采用等效线性化法对这种非线性模型的单自由度结构的随机地震响应进行了分析。理论分析与计算结果均表明恢复力滞回曲线的主要贡献是使阻尼增大。最后,通过一个算例分析了高斯过滤白噪声地震输入下单自由度结构的随机响应,并将理论计算结果与Monte-Carlo法的计算结果进行了比较。
In this paper, a nonlinear restoring force model with hysteresis characteristics can be described approximately. After appropriate simplification, the equivalent linearization method is used to analyze the random seismic response of the single-degree-of-freedom structure of this nonlinear model. Theoretical analysis and calculation results show that the main contribution of the hysteresis curve of restoring force is to increase the damping. Finally, an example is given to analyze the random response of Gaussian-filtered white noise seismic input with single-degree-of-freedom structure, and the theoretical calculation results are compared with the Monte-Carlo method.