標題: Identifications of symmetric ductile braced structure by pseudo-single-degree-of-freedom procedure
作者: Huang, Ming-Chih
Wang, Yen-Po
Lin, Tzu-Kang
Wang, Jer-Fu
土木工程學系
Department of Civil Engineering
關鍵字: energy-dissipated building;physical-parameter identification;hysteretic model;pseudo-single-degree-of-freedom;structural health monitoring
公開日期: 1-Aug-2014
摘要: For energy-dissipation devices, identification of the physical behavior is a more difficult task than their design. This study develops an identification technique that is useful for the acquirement of the dynamic characteristics of buildings with symmetric ductile braces (SDBs) which exhibit bilinear behavior. The considered system is a linear multi-story building with SDBs regarded as a bilinear hysteretic model. The complex multi-degree-of-freedom problem was solved in the pseudo-single-degree-of-freedom domain, and the dynamic parameters of primary building as well as the SDBs are sequentially identified from top to bottom stories based on the input and output responses of floors. To simplify the nonlinear problem, a backbone curve, where the multi-values restoring force is transformed into a single-valued function, is applied to characterize the hysteretic model. A numerical study demonstrates that the proposed identification technique was able to extract the physical parameters of the primary building and the SDBs individually from the floor responses. It may be applied to the health monitoring of buildings protected by nonlinear energy-dissipation devices.
URI: http://hdl.handle.net/11536/25081
ISSN: 1392-8716
期刊: JOURNAL OF VIBROENGINEERING
Volume: 16
Issue: 5
起始頁: 2438
結束頁: 2447
Appears in Collections:Articles