Work

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

Year: 2024

Type: article

Abstract: 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.

Source: Journal of Constructional Steel Research

DOI: 10.1016/j.jcsr.2024.108966

Authors: Immo Lukas, Ralph Timmers, Robert Lang

Institution: Universität Innsbruck

Language: English

Topic: Structural Load-Bearing Analysis

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $4,180