Re-centring capability of dual eccentrically braced frames with removable bolted links

摘要

The paper describes the concept of re-centring structures-systems that aim at reducing structural damage by isolating plastic deformations in removable or "repairable" fuses, and have the ability to return to the initial undeformed shape after an earthquake. A practical application to dual frames obtained by combining eccentrically braced frames and moment resisting frames is presented. An experimental test on a one-storey structure with removable bolted links is used to check the link removal procedure and to calibrate a numerical model.