Seismic Performance & Vulnerability Assessment of Bare and Infilled Steel Frame Structures

Steel framed structures, with unreinforced masonry infill panels, make up a significant proportion of residential buildings in seismically active regions (e.g. Japan, China, Turkey, Iran, California), as well as a substantial amount of the world's governmental and public buildings. When subjected to strong earthquake loads, these structures are at high risk of heavy damage, due to the complex interaction of the unreinforced masonry infills and its surrounding frame. Thus, such structures are among the dominant causes of structural failure and casualty.

This project focuses on the seismic response of low- to mid-rise masonry infilled panels surrounded by steel frames. The Seismic Vulnerability and Fragility of these structures are investigated following various analysis methods such as Static Push-Over (SPO), Nonlinear Time History Analysis (NLTHA), Cloud Analysis (CLA), Incremental Dynamic Analysis (IDA) and Multiple-Stripe Analysis (MSA). Furthermore, by developing highly detailed numerical models of existing buildings, the effect of construction quality has been simulated and implemented to achieve realistic models.

Funding: UCL Graduate Research Scholarship & UCL Overseas Research Scholarship

Epicentre Staff Involved: Arash Nassirpour, Dina D'Ayala