Title: Optimum design of long-span cable-supported bridges using robustness index
Language: English
Authors: Shoghijavan, Mohammad 
Starossek, Uwe 
Issue Date: 2019
Source: IABSE Symposium (2019)
Abstract (english): 
The target of this study is to use a practical method for the optimization of cable distance in cable–supported bridges using the robustness index. The proposed optimization method minimizes the cost of the bridge construction and guarantees a certain level of robustness. The reserve-based robustness index, applied in this study, considers the redistribution of forces after the failure of structural elements. For finding the optimum distance of cables, a simplified bridge model is considered. Cable-loss scenarios are considered in the design process and the dynamic effect of cable rupture is taken into account. Then, the critical design load of the cables and the maximum bending moment acting on the girder after the cable failure are calculated and incorporated into the bridge design. The effect of other influential factors, such as the bending stiffness of the girder and the axial stiffness of the cables, on the optimum design of the system is also investigated.
Conference: IABSE Symposium 2019 
URI: http://hdl.handle.net/11420/2677
ISBN: 978-385748163-5
Institute: Baustatik B-4 
Document Type: Chapter/Article (Proceedings)
Project: Investigation of Progressive Collapse in Seismically Designed Steel Structures 
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