Numerical analysis on axial capacity of steel built-up battened columns

Archives of civil engineering

article

Paweł Pieczka¹  Piotr Iwicki¹ 

[1] Gdansk University of Technology, Faculty of Civil and Environmental Engineering

关键词: steel;    built-up member;    buckling;    numerical analysis;    axial capacity;   

DOI  :  10.24425/ace.2022.140665

学科分类：建筑学

来源: Polska Akademia Nauk * Instytut Podstawowych Problemow Techniki / Polish Academy of Sciences, Institute of Fundamental Technological Research

【 摘 要 】

This paper deals with the numerical analysis aimed at study the bearing capacity of pinended steel built-up columns under axial compression. Finite element (FE) models were performed for the columns presented in the literature. The main problem discussed in the article is the shape and magnitude of geometric imperfections introduced into the numerical FE model, necessary to obtain the load capacity consistent with the experimental strength tests. Three types of numerical analysis that can be used inAbaqus program to calculate the load bearing capacity have been described. The imperfections possible to introduce for built-up columns were presented and an equivalent imperfection corresponding to both imperfections recommended by Eurocode 3 (global of the entire column and local of the chord) for built-up members was proposed. The results of the geometrically and materially nonlinear static analysis were compared with the calculations according to the code procedures (Eurocode 3 and PN-B- 03200:1990) and the results of experimental tests.

【 授权许可】

Unknown