Numerical parametric study on the impact of non-continuous longitudinal stiffening

被引：2

作者：

Lukas, Immo ^{[1
]}

Timmers, Ralph ^{[1
]}

Lang, Robert ^{[1
]}

机构：

[1] Univ Innsbruck, Dept Struct Engn & Mat Sci, Unit Steel Construct & Mixed Bldg Technol, Tech Str 13, A-6020 Innsbruck, Tyrol, Austria

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2024年 / 222卷

关键词：

Non-continuous stiffening; Plate buckling; GMNIA; Imperfections; Parametric study; RESIDUAL-STRESS;

D O I：

10.1016/j.jcsr.2024.108966

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In non-continuous stiffening, longitudinal stiffeners end within the panel, creating gaps before reaching transverse stiffeners or girder ends. This numerical parametric study examines a validated model subjected to uniform compression for ten imperfection patterns across 1080 geometric configurations, resulting in 10,800 GMNIAs. Findings refute the redundancy of imperfections due to eccentric loads and identify critical imperfection patterns. Stiffener stiffness minimally impacts ultimate loads. More stiffeners lower ultimate loads by restricting stress redistribution. Minimizing gap dimensions is recommended for optimal performance, indicating the need to update standards to include non-continuous stiffening.

引用

页数：11

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