Cost optimization of end‐plate connections

Kristo Mela, Lauri Hietaharju

Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu


Minimum cost beam‐to‐column end‐plate joints are determined in this study. The goal is to achieve partial automation of the time‐consuming joint design. The premise is that the joint is to be designed for target bending moment and shear force resistance and initial rotational stiffness. It is assumed that the designer has prescribed the beam and column profiles and the initial rotational stiffness a priori. The joint design task is formulated as a mathematical optimization problem, where the total cost of the joint is minimized such that the resistance and stiffness requirements are satisfied. The component method described in the standard EN 1993‐1‐8 is used for evaluating the bending resistance and initial rotational stiffness of the joint. The end‐plate dimensions and bolt positions are taken as the design variables of the optimization problem. The number of bolt rows, bolt sizes and bolt strength are incorporated as parameters with fixed values during optimization. The applicability and performance of the proposed approach for joint cost minimization is demonstrated on case studies, with a comparison to an alternative procedure found in the literature. The results indicate that mathematical optimization provides a useful tool for design automation of steel joints.
OtsikkoProceedings of Nordic Steel 2019
AlaotsikkoCE/papers Special Issue
DOI - pysyväislinkit
TilaJulkaistu - 16 syysk. 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaNordic Steel Construction Conference -
Kesto: 18 syysk. 201920 syysk. 2019


ISSN (elektroninen)2509-7075


ConferenceNordic Steel Construction Conference


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