ABSTRACT

In many researches and engineering projects, in order to control the uncertainty of ground motions, a large number of Time History Analyses (THAs) are used with a time-consuming process. To reduce the computation time, this study proposed four truncation methods that truncates the trailing records based on the principle of structural maximum displacement response equivalence. By investigating the changes of ground motion parameters and structural response after truncating, an optimal method is confirmed and then compared with commonly used truncation methods. The results show that the optimal truncation method leads to a significant time-saving procedure and reliable computation results.

摘要

在许多研究和工程项目中，为了控制地震动的不确定性，大量使用时间历史分析（THA），过程耗时。为了减少计算时间，本研究根据结构最大位移响应等效原理，提出了四种截断尾随记录的方法。通过研究截断后地震动参数和结构响应的变化，确定了最优的截断方法，并与常用截断方法进行了比较。结果表明，最优截断方法可显着节省程序时间和可靠的计算结果。