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...

Quantifying and propagating uncertainties in structural response is critical to robust performance-based seismic assessments. This paper evaluates the influence of model parameter uncertainty on limit state assessment controlled rocking steel braced frames (CRSBFs). The dead load frame, fuse yield strength, initial post-tension (PT) force strength frame elements are random variables considered....

A proper composition of stiffness and ductility parameters is required to obtain a resistant and economic structure. Accordingly, Chevron Knee Braced Frame (CKBF) seems appropriate due to its proper seismic performance. The advantage of this system comes to having the capability of rapid and cheap replacement of chevron knee elements after an earthquake occurs. In this research, response modifi...

Steel plate shear walls (SPSWs) are one of the most economical and under-utilized lateral load resisting systems currently available to structural engineers. In comparison with traditional lateral load systems, such as steel braced frames, reinforced concrete walls and moment resisting frames, SPSWs have fewer costly detailing requirements, require less stringent construction tolerances, allow ...

The implementation of a new friction tension-only “GripNGrab” device attached to rocking steel frame is described. device, when subject significant tension dissipates energy via sliding in the frictional component. When loaded compression direction, almost no compressive force carried, but displacement occurs ratchetting This absence any within dissipative system means that will always recentre...