The unanticipated brittle fracture of connection of the steel moment resisting frame (SMRF) occurred in 1994 the Northridge earthquake. Since then, the researches for the vulnerability of connection of the existing SMRF and for rehabilitation of those buildings were conducted. This paper suggests performance-based optimal seismic retrofit technique using connection upgrade. For optimal design, ...

Many recent research studies focused on the development of innovative seismic resilient structures by chasing objectives minimising both damage and repair time, hence allowing definition able to go back undamaged, fully functional condition, in a short time. In this context, present study investigates an type self-centring damage-free steel column base (CB) connection its beneficial effects whe...

progressive collapse is a chain reaction of failures propagating throughout a portion of the structure disproportionate to the original local failure occurring when a sudden loss of a critical load‐bearing element initiates a structural element failure, eventually resulting in partial or full collapse of the structure. both general services administration (gsa) and united states department of d...

On 9 January 1857, a large earthquake of magnitude 7.9 occurred on the San Andreas fault, with rupture initiating at Parkfield in central California and propagating in a southeasterly direction over a distance of more than 360 km. Such a unilateral rupture produces significant directivity toward the San Fernando and Los Angeles basins. Indeed, newspaper reports of sloshing observed in the Los A...

In the last two decades, high-rise timber buildings have been built using glulam truss system, even with limited openings. Moment-resisting frames (MRTF) semi-rigid beam-to-column connections can be an architecture-friendly way to provide a load-carrying system vertical and horizontal loads for buildings. these structures, of adequate ductility are crucial ensure robustness energy dissipation. ...

Using state-of-the-art computational tools in seismology and structural engineering, validated using data from the Mw=6.7 January 1994 Northridge earthquake, we determine the damage to two 18-story steel moment-frame buildings, one existing and one new, located in southern California due to ground motions from two hypothetical magnitude 7.9 earthquakes on the San Andreas Fault. The new building...