Asian Journal of Civil Engineering

, Volume 19, Issue 5, pp 595–606 | Cite as

Sensitivity and fragility analysis of steel moment frames subjected to progressive collapse

  • Arash Naji
Original Paper


Progressive collapse refers to a phenomenon in which a local damage in a primary structural element due to abnormal loads, leads to a partial or complete structural failure. Although most studies in progressive collapse are based on deterministic analysis using median or nominal values of analysis parameters, uncertainty analysis also results in more realistic results. An application of probability theory to the structures’ failure analysis with uncertain properties is one of the ways to deal with, in which they are considered as random variables. For probabilistic analysis, first sensitivity analysis should be carried out to study the sensitivity of response to different parameters. In this paper, sensitivity analysis is performed to study the effect of uncertainty of dead and live loads, and properties of steel such as modulus of elasticity and yield stress of steel on the response of column removed point. Then, fragility curves are also plotted to investigate the probability of progressive collapse of steel moment frames.


Progressive collapse Steel structures Probabilistic analysis Fragility curves Sensitivity analysis Monte Carlo simulation First-order second-moment Tornado diagram 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Civil EngineeringSadjad University of TechnologyMashhadIran

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