|Publisher DOI:||10.1016/j.engstruct.2021.112742||Title:||Developing a robustness index for parallel load-bearing systems||Language:||English||Authors:||Shoghijavan, Mohammad
|Keywords:||Cable-loss scenario; Least squares method; Parallel load-bearing systems; Progressive collapse; Robustness index||Issue Date:||1-Oct-2021||Source:||Engineering Structures 244: 112742 (2021-10-01)||Abstract (english):||
The target of this study is to develop a robustness index for parallel load-bearing systems. Parallel load-bearing systems are structural systems with load-bearing elements that are similar in type and function and constitute alternative load paths. For this purpose, a conceptual model is considered. The robustness index will be calculated based on the “stress increase ratio” of the critical cable in a cable-loss scenario. For finding the stress increase ratio of the critical cable, the differential equations of the system have been used. Accordingly, the stress increase ratio of the critical cable has been calculated by deriving an approximation function. In order to maximize the accuracy of the approximation function, the least squares method (LSM) has been used. Then, a reserve-based robustness index for a parallel load-bearing system has been derived. The proposed robustness index considers different levels of the initial damage and can be expanded to account for the initial failure of several load-bearing elements. The developed robustness index has been checked by numerical models and its good accuracy has been proven.
|URI:||http://hdl.handle.net/11420/9853||ISSN:||0141-0296||Journal:||Engineering structures||Institute:||Baustatik B-4||Document Type:||Article||Project:||Investigation of Progressive Collapse in Seismically Designed Steel Structures|
|Appears in Collections:||Publications without fulltext|
Show full item record
checked on May 31, 2023
Add Files to Item
Note about this record
Cite this record
Items in TORE are protected by copyright, with all rights reserved, unless otherwise indicated.