Mechanical response of CFRP-reinforced hollow ultra-high strength steel circular tubes under static axial compression and bending loads: Experimental and numerical investigations

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-02-06 DOI:10.1016/j.tws.2025.113046

L.T. Lee, F. Azhari, A. Heidarpour

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引用次数: 0

Abstract

This paper aims to investigate the mechanical performance of CFRP-reinforced hollow ultra-high strength steel (UHSS) circular tubular columns under static axial compression and three-point bending tests. Using CFRP sheets to strengthen steel members with the aid of epoxy as the bonding agent can increase the stiffness, strength-to-weight ratio, and corrosion resistance, which can extend the service life of structures while reducing maintenance requirements. Bare and CFRP-reinforced circular hollow section steel columns made of four different grades of steel, including mild steel (MS) grade 350 and UHSS grades 700, 800, and 1200, are examined. To explore the effect of shape, the results of circular hollow tubular sections are compared with square hollow sections. The load-displacement curves, strength and failure modes obtained from the large-scale experimental tests and nonlinear finite element (FE) models are discussed. Analytical predictions are also compared with experimental results. The outcome of this study will provide insights into the coupled effects of CFRP reinforcement and steel grade, in improving the static axial and lateral responses of the steel columns.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.