Truncation Method of Ground Motion Records Based on the Equivalence of Structural Maximum Displacement Responses

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.