Caracterización experimental de riostras de pandeo restringido a escala sometidas a cargas cíclicas

Abstract

Cyclic testing of four 1:4 scale buckling restrained braces (BRB), built with local materials and labor are realized. The braces consist of a configuration of steel plate core, an insulating surface, filling mortar as confining material and hollow steel structural as a confinement sleeve. The force-displacement curves, the characteristic curve of the braces and the adjustment strength factors are determined and studied. It is concluded that the tests satisfy the ac-ceptance criteria for qualifying cyclic testing. There is no stiffness degradation of hysteresis loops. The cumulative inelastic axial deformation of the specimen is higher than recommended normative. (English) [ABSTRACT FROM AUTHOR]