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Evaluation Of Wind Load Integration In Disproportionate Collapse Analysis Of Steel Moment Frames For Column Loss, Simos Gerasimidis, C. Baniotopoulos
Evaluation Of Wind Load Integration In Disproportionate Collapse Analysis Of Steel Moment Frames For Column Loss, Simos Gerasimidis, C. Baniotopoulos
Civil and Environmental Engineering Faculty Publication Series
The design of steel structures, in most cases, depends majorly on the level of wind loads which are prescribed by codes and regulations and are used in the structural analysis due to the fact that steel structures being light and ductile systems are strongly affected from a slight difference in the values of wind loading. During the last decades, disproportionate collapse analysis has become of major interest mainly due to the increasing number of failures occurring in that pattern. Commonly accepted guidelines and methods of analysis have been produced, the most dominating of which being the Department of Defense Facilities …
Steel Moment Frames Column Loss Analysis: The Influence Of Time Step Size, Simos Gerasimidis, C. Baniotopoulos
Steel Moment Frames Column Loss Analysis: The Influence Of Time Step Size, Simos Gerasimidis, C. Baniotopoulos
Civil and Environmental Engineering Faculty Publication Series
This paper applies two well-known structural dynamics computational algorithms to the problem ofdisproportionate collapse of steel moment frames applying the alternate load path method. Any problem of structural dynamics strongly depends on the accuracy and the reliability of the analysis method since the parameters involved in the selection of the appropriate algorithm are affected by the nature of the problem. Disproportionate collapse is herein simulated via a time history analysis used to ‘‘turn off’’ the effectiveness of an element to the structure. For this kind of problem the time step size of the computational algorithm is of major importance for …
Disproportionate Collapse Analysis Of Cable-Stayed Steel Roofs For Cable Loss, Simos Gerasimidis, C. Baniotopoulos
Disproportionate Collapse Analysis Of Cable-Stayed Steel Roofs For Cable Loss, Simos Gerasimidis, C. Baniotopoulos
Civil and Environmental Engineering Faculty Publication Series
Disproportionate collapse has been identified lately as a real cause of failure for structural engineering projects. Rare and unexpected, the phenomenon of disproportionate collapse usually results to many fatalities and thus, its analysis and mitigation is deemed necessary. This work describes the analysis of a cable-stayed steel roof under the scenario of a cable loss. The eventof a cable loss is assumed to be brittle, while relevant recent recommendations suggest the application of a scaled equivalent static force at the points of the anchorage of the cable but in the opposite direction of the original cable force. In this paper, …