Damping Coefficient of a Building With Brb Subject To Three Types of Earthquake Ground Motions

Abstract eng:
This study evaluates the damping coefficient, the effective damping and the energy dissipated of a structure with and without buckling-restrained braces (BRB), subjected to 30 seismic records with different characteristics. These results are compared with the damping coefficient given by an international standard. The structure was modelled with a commercial software. The study is carried out on a symmetric 4-story steel moment-resisting frame that was tested without BRB at the E-Defense laboratory in Japan. The dynamic response of such unbraced bare frame was numerically simulated, obtaining a satisfactory agreement. The same numerical model was used to describe the dynamic behavior of the steel frame equipped with BRB. The seismic were three types of seismic records: Far-Field (inter and intra plate), and Near-Field (ten ground motion records in each series). These records were considered with and without scaling. Scaling was performed according to one of the Argentinian code`s spectrum. The results of the numerical modeling (damping coefficient, effective damping and energy dissipated) were discussed. In the conclusion, the main results of the study are highlighted .

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket