LARGE-SCALE TESTS ON A RE-CENTRING DUAL ECCENTRICALLY BRACED FRAME

摘要

Conventional seismic design philosophy is based on dissipative response, which implicitly accepts damage of a structure under the design earthquake load, which results in significant economic losses. Repair of a structure is often impeded by its permanent (residual) drifts. The repair costs and downtime of a structure hit by an earthquake can be significantly reduced by adopting removable dissipative members and providing the structure with the re-centring capability. These two concepts were implemented in a dual structure, obtained by combining steel eccentrically braced frames with removable bolted links and moment resisting frames. The paper presents the results of a large-scale experimental program on a dual eccentrically braced frame with replaceable links performed at the European Laboratory for Structural Assessment (ELSA) at the Joint Research Centre (JRC) in Ispra within the framework of Transnational Access of the SERIES Project.