MODAL ANALYSIS OF CIVIL STRUCTURES BASED ON OUT-PUT ONLY DATA

摘要：

For civil structures, it is important to identify modal properties of structures based on out-put only data. In this paper, an overview of the advanced Enhanced Frequency Domain Decomposition (EFDD) and the Stochastic Subspace Identification (SSI) methods is given. The two methods are utilized via dedicated software ARTeMIS for the experimental modal analysis of the IASC-ASCE SHM experimental phase II problem and the Four Seasons building based on out-put only measurement data. The modal estimates obtained from the vibration tests of the two structures using these two methods are compared. It is shown that the EFDD and SSI are powerful methods that provide accurate estimates of natural frequencies and mode shapes of structures. Theses two alternative methods should be applied together to ensure reliable modal identification of civil structures base on out-put only data.

关键词： Vibration test ambient vibration operational modal analysis output only modal parameter

作者: Y. Lei Y. H. Liu Y. Lin Q. Huang

作者单位: Department of Civil Engineering, Xiamen University, Xiamen, China

会议类型: 国际会议

会议名称: 2007年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 上海

会议语种:英文

页码: 372-384

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）