Researches show that the strength criterion is inadequate for design of structures against seismic loads. Since structures yield and experience plastic deformation under strong ground motion, considering structural damage with inelastic behavior may be a considerable criterion for design and control of the structures.In this paper, three steel structures with dual system consisting of intermedi...

The capacity of a structure can be assessed using inelastic analyses, requiring sophisticated numerical procedures such as pushover and incremental dynamic analyses. A simplified method for the evaluation seismic performance steel Concentrically Braced Frames (CBFs) to used in everyday practice immediate aftermath an earthquake has been recently proposed. This evaluates existing building employ...

According to modern seismic codes, in concentrically braced frames the seismic input energy should be dissipated by means of the hysteretic behaviour of braces while all the other members (i.e. beams and columns) have to remain elastic. Accordingly, the design internal forces of braces are determined in these codes by elastic analysis of the structure subjected to seismic forces obtained by the...

Among the existing passive energy dampers, I-shaped shear dampers had shown suitable performance in experimental and numerical studies. Although they improve dissipating ductility of concentrically braced frames (CBFs), reduce stiffness ultimate strength system. Three approaches are generally used to overcome problem, including (a) increasing thinness plates, (b) number (c) using more bays. The...

Aktif deprem bölgelerinde yaygın kullanılan süneklik düzeyi yüksek çelik merkezi çaprazlı çerçeveler (MÇÇ) için güncel Amerikan, Kanada ve Türkiye sismik tasarım yönetmeliklerinde tasvir edilen kapasite tasarımı yaklaşımına göre, MÇÇ’lerdeki kolon kirişler, çaprazların doğrusal olmayan çevrimsel davranışını göz önüne alan, iki farklı yapısal analiz gözetilerek tasarlanmaktadır. Bu hallerinde al...

Background: The special concentrically braced frame (SCBF) is an aseismic structure, but its bracing system exhibits brittle failure and premature buckling connected with the weld fracture of gusset plate post-buckling braces; thus, maximizing role energy dissipation difficult. Methods: Here, this paper proposes a single-story frames ductile casting steel connectors. large inelastic deformation...

A seismic-resistant steel frame with energy-dissipating, chevron-type braces is proposed. The are equipped replaceable hourglass-shaped pins made of duplex stainless steel. Under design seismic loading, energy dissipated through inelastic deformations confined in the while other members remain essentially elastic. As a result, exhibits high post-yield stiffness due to inherent properties stainl...