Open Access

ARTICLE

Experimental and numerical investigations on bending behavior of fixed open-web steel beams

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1 Lishui Zhengyang Electric Power Design Institute Co., Ltd, Lishui, China
2 State Grid Zhejiang Electric Power Co., Ltd, Hangzhou, China
3 State Grid Lishui Power Supply Company, Lishui, China

* Corresponding Author: Zhong’an Zheng ()

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería 2024, 40(2), 1-6. https://doi.org/10.23967/j.rimni.2024.05.007

Received 21 March 2024; Accepted 13 May 2024; Issue published 29 May 2024

Abstract

The effects of opening parameters on the bending behavior of fixed open-web steel beams under static loading were experimentally investigated using six specimens of different opening length-to-height ratios, area ratios, and distributions. The experimentally obtained failure modes, bearing capacities, and load-displacement curves of the specimens were compared with those extracted from numerical simulations performed via Abaqus finite element analysis software. The results revealed the following: (i) The typical failure mode of the fixed open-web steel beams was plastic failure at the opening corners in the shear-bending sections, with compressive corners experiencing flexion and tensile corners experiencing tearing. (ii) For a given opening area ratio and opening height-to-beam height ratios, decreasing the opening length and increasing the number of openings significantly increased the bearing capacity of the open-web beam (by more than one-fold) when the openings were appropriately configured, compared with beams with a small number of large openings. (iii) Increasing the opening height and length had similar effects on the bending behavior of the open-web beam.

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