Open AccessReliability analysis of box-shaped steel column subjected to blast loading
Author(s) -
Kuantang Xi,
Xiangyang Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1676/1/012117
Subject(s) - structural engineering , displacement (psychology) , reliability (semiconductor) , sensitivity (control systems) , column (typography) , monte carlo method , index (typography) , materials science , engineering , mathematics , computer science , statistics , physics , psychology , power (physics) , quantum mechanics , connection (principal bundle) , electronic engineering , world wide web , psychotherapist
Structural collapse caused by explosion and terrorist attacks often occurs. Steel columns, as the main load-bearing members of steel structures, often cause continuous structural collapse due to their damage. In order to study the reliability of steel column subjected to blast loading, box-shaped steel columns are taken as the research object, with considering the uncertainties associated with blast loading and material properties. Damage is determined according to damage index based on the ratio of the overall displacement and the local displacement to the maximum displacement. In this paper, P-I curves evaluation method and Monte-Calro simulation method are utilized to obtain the failure probability and cumulative distribution functions of the damage index. The results show the importance of considering the uncertainties in assessing the damage index of the columns against explosion. Also, sensitivity analyses show that damage index has the highest sensitivity to peak reflected pressure.