the knee bracing steel frame (kbf) is a new type of energy dissipating frame which enjoys exceptional ductility and lateral stiffness. rather than the beam-column joint, one end of the diagonal brace in kbf is attached to the knee element. indeed, the knee element as a hysteretic damper is designed and detailed to behave like a structural fuse by sustaining controlled inelastic deformations as ...

Long links on eccentrically braced frames (EBF) have lower performance than short and intermediate links. Failure of long occurs faster that medium due to the influence bending moment, which is more dominant at ends link shear forces. The objective this research improve by delaying failure buckling fracture flange web ends. According AISC 341, cross-sectional capacity outside beam greater link....

Soil-structure interaction analysis is one of the most challenging problems in field structural engineering. In this paper, two aspects less discussed literature, namely: (ⅰ) effect considering all three components near-field earthquake excitations instead just horizontal component, and (ⅱ) elimination part inter-story drifts caused by foundation rocking, have been investigated. Theoretical bot...

Recent studies have indicated the need of considering aftershocks in seismic design/assessment structures. This article investigates effect sequential mainshock and aftershock earthquakes on eccentrically braced steel frames with vertical energy-absorbing links. To achieve this, 4, 8 12-storey frame buildings are modelled Perform3D® software non-linear behaviour materials components. The subjec...

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...