Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
15.13: Discrete sizing optimization of trussed steel portal frames according to Eurocode 3
This paper presents a new method to find the global solution of combined truss‐frame sizing optimization problems taking into account all relevant Eurocode constraints. The approach is based on a reformulation of the optimization problem as a Mixed‐Integer Linear Programming problem (MILP) which is solved by means of a branch‐and‐bound method. A portal frame that consists of both beam and truss elements is adopted as a test case. The optimal sections of the portal frame have to be selected from a square hollow sections catalog. The design of the portal frame has to meet the requirements prescribed by the Eurocodes. These requirements are adopted as constraints by reformulating them as or approximating them by a linear equation. Not only the Eurocode constraints related to member strength and stability but also all Eurocode constraints related to the joints of the structure are taken into account during the optimization. As a consequence, a post‐processing step to account for other constraints is avoided, therefore optimality is retained and additional engineering time is reduced. The optimization results are presented and the influence of the different Eurocode constraints on the optimal design is discussed.
15.13: Discrete sizing optimization of trussed steel portal frames according to Eurocode 3
This paper presents a new method to find the global solution of combined truss‐frame sizing optimization problems taking into account all relevant Eurocode constraints. The approach is based on a reformulation of the optimization problem as a Mixed‐Integer Linear Programming problem (MILP) which is solved by means of a branch‐and‐bound method. A portal frame that consists of both beam and truss elements is adopted as a test case. The optimal sections of the portal frame have to be selected from a square hollow sections catalog. The design of the portal frame has to meet the requirements prescribed by the Eurocodes. These requirements are adopted as constraints by reformulating them as or approximating them by a linear equation. Not only the Eurocode constraints related to member strength and stability but also all Eurocode constraints related to the joints of the structure are taken into account during the optimization. As a consequence, a post‐processing step to account for other constraints is avoided, therefore optimality is retained and additional engineering time is reduced. The optimization results are presented and the influence of the different Eurocode constraints on the optimal design is discussed.
15.13: Discrete sizing optimization of trussed steel portal frames according to Eurocode 3
Van Mellaert, Roxane (Autor:in) / Mela, Kristo (Autor:in) / Tiainen, Teemu (Autor:in) / Heinisuo, Markku (Autor:in) / Lombaert, Geert (Autor:in) / Schevenels, Mattias (Autor:in)
ce/papers ; 1 ; 3990-3999
01.09.2017
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Design of Trussed Steel Towers According to the Eurocodes
| British Library Online Contents | 2013
Eurocode 3 and the in-plane stability of portal frames
| British Library Online Contents | 2005
Prefabricated trussed frames applied to farm buildings
| British Library Conference Proceedings | 1988
Computer-Aided Design of Structural Steel Plane Frames According to Eurocode 3
| British Library Conference Proceedings | 1998