Stability behaviour and design approach of reinforced concrete-filled corrugated steel tubular slender columns under axial compression

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-05 DOI:10.1016/j.tws.2025.113165

Hua Yang , Shichao Yan , Yong Fang , Ligui Yang

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引用次数: 0

Abstract

Reinforced concrete-filled thin-walled galvanized corrugated steel tube (RCFCST) is a new type of composite member with competitive mechanical behaviour, durability and construction convenience. In practice, RCFCST members with large slenderness ratios typically undergo overall stable failure, which needs special attention and reliable design methods. However, no existing design methods can directly ascertain the stability-bearing capacity of slender columns. This study delves into the compressive stable behaviour of large-scale slender RCFCST members, focusing on two key test variables, i.e., slenderness ratios and specimen types. The failure modes, deformation characteristics, axial load-deflection curves, and strain development have been meticulously addressed. Based on the experimental findings in this study, a fibre-based model for RCFCST members is proposed and validated. A systematic parametric analysis has been conducted to further explore the influence of geometrical and mechanical parameters on the stability-bearing capacity. Ultimately, a design approach for determining the compressive stability-bearing capacity of slender RCFCST members is proposed and verified.

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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.