Nowadays, due to environmental changes, the condition of buildings can be in danger. In order protect performance existing buildings, it is important investigate seismic behaviour building structure subjected earthquake excitation. addition, study advanced level ductile design recommended by current codes. immediate future, lateral load resistance needs evaluated precisely. For purpose analyzin...

This paper presents the findings of an experimental investigation on a reinforced concrete frame structure (ordinary moment resistant frame). The test model was subjected to lateral excitation employing 1994 Northridge earthquake accelerogram. fabricated in 1:3 reduced scale acquiring dimensional similarities. utilized ingredient mix ratio 1:1.65:1.75 and water binder 0.47. dynamic characterist...

The Welch Bound is a lower bound on the root mean square cross correlation between n unit-norm vectors f1, ..., fn in the m dimensional space (Rm or Cm), for n ≥ m. Letting F = [f1|...|fn] denote the m-by-n frame matrix, the Welch bound can be viewed as a lower bound on the second moment of F , namely on the trace of the squared Gram matrix (F ′F ). We consider an erasure setting, in which a re...

The work presented in this paper investigates the strength of moment-resisiting apex brackets cold-formed steel portal frames. results two previously reported full-scale frame tests, where frames failed through buckling bracket, were used to validate a finite element model that included material nonlinearity, geometric imperfections, and bolt bearing behaviour. From test as well results, import...