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Macro‐modelling of 3D tubular column‐to‐truss beam joints
Author(s) -
NGUYEN Tien Minh,
RODIER Anthony
Publication year - 2021
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.1379
Subject(s) - structural engineering , joint (building) , truss , macro , finite element method , modular design , component (thermodynamics) , column (typography) , trim , deformation (meteorology) , bridge (graph theory) , computer science , beam (structure) , engineering , materials science , medicine , physics , connection (principal bundle) , composite material , thermodynamics , programming language , operating system
The European Research Project “Innovative 3D joints for robust and economic hybrid tubular construction” aims at developing innovative plug‐and‐play joints for hybrid tubular construction where square (or rectangular) tubular columns are combined with truss‐beams composed of cold‐formed lightweight steel beams. This kind of joints provides a highly efficient structural system for modular solutions that are essential for fast‐track construction. An important task of this project is to develop a 3D joint model that takes into account 3D behavior of joints. The 1D component method presented in the Eurocode 3 part 1‐8 is extended to a 3D level by considering all relevant components and interactions between them. In the literature, some studies showed that the out‐of‐plane deformation of the tubular column faces depends on the loading and boundary conditions of the other faces. The first objective of this article is thus to propose a new 2D springs model taking into account the correlation between out‐of‐plane deformations of the faces of rectangular hollow section (RHS) columns. Then, a formulation of a 3D macro‐element of the joint is presented. Finally, the model is validated using two distinct procedures: 1) an analytical procedure implemented in a symbolic calculation software; 2) a modelling by finite elements.