离散单元法在框架结构地震反应分析中的应用

将离散单元法应用于框架结构的地震反应分析，并建立了框架结构的离散单元计算模型。在数值求解过程中，本文采用同步动态松弛法确立与求解结构单元平衡关系，避免了动态松弛法由于路径相关性所造成的误差。本文编制了框架结构地震反应时程分析程序，并以一实际结构为例，进行了时程分析。算例表明，本文所提出的方法简单、有效，为工程结构地震反应分析提供了新的思路与方法。

Application of the DEM to the seismic response analysis of frame structures

In this paper,the distinct element method (DEM) is applied to analyze the seismic response of frame structures, and the distinct element model for frame structures is also developed. The synchronistic dynamic relaxation method is used to establish and solve the equilibrium of the structural elements so as to avoid the numerical error, which is brought due to the route correlation of the dynamic relaxation method. A program is also developed for the analysis of the seismic response of frame structures on the basis of the methods developed in this paper. The program is used to calculate the seismic response of a practical structure. It is proved that the methods developed are simple and reliable.