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Assessment of the Progressive Collapse Resistance of Double-layer Grid Space Structures using implicit and explicit solvers

Fu, F and Parke, G A R (2018) Assessment of the Progressive Collapse Resistance of Double-layer Grid Space Structures using implicit and explicit solvers International Journal of Steel Structures.

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Abstract

A double-layer grid space structure is a conventional long span structure used where large column-free areas are required. Due to its large indeterminacy and the redundancy of its structural configuration, it is normally considered in design practice, that progressive collapse will not be triggered when the loss of an individual member occurs. However, research and several prior accidents have shown that progressive collapse could occur following the loss of some critical members when the structures are subject to abnormal loading such as heavy snow. To investigate the structural behavior of this type of structure, a 3D finite element model of a double-layer space structure grid was built by the authors, several collapse scenarios have been investigated using an implicit method which follows the Alternative Path Method defined in GSA. In addition, case studies have been made using the explicit method which is to simulate the whole process of the structural collapse. In the analysis, different members failure or support collapses were studied. The response of the structure was investigated and the correspondent potential of progressive collapse was discussed in detail. Methods to mitigate the progressive collapse of this type of space structure have also been recommended.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Fu, F
Parke, G A RG.Parke@surrey.ac.uk
Date : 2018
Copyright Disclaimer : © 2018 Springer Verlag
Uncontrolled Keywords : Double-layer grid; Progressive collapse; Explicit analysis; Implicit analysis; Alternative Path method
Depositing User : Clive Harris
Date Deposited : 28 Mar 2018 11:42
Last Modified : 28 Mar 2018 11:46
URI: http://epubs.surrey.ac.uk/id/eprint/846104

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