Tensile performance of concrete-filled double skin steel tubular members using recycled aggregate concrete

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-27 DOI:10.1016/j.tws.2025.113248

Hui-Wen Tian, Wei Li, Long-Hai Lai

引用次数: 0

Abstract

This study investigates the axial tensile behavior of concrete-filled double-skin steel tubular (CFDST) members with recycled aggregate concrete (RAC). Axial tension tests were performed to obtain the failure modes, load and strain responses. A finite element (FE) model was developed to analyze the impact of key parameters and the interaction between the steel tubes and sandwiched RAC. The applicability of the tensile strength calculation method in the current standard, initially designed for normal CFDST members, was also evaluated for RAC-filled counterparts. Results demonstrated that RAC-filled CFDST members exhibited excellent ductility under axial tension. The confinement provided by the infilled RAC effectively enhanced the tensile strength of the steel tube. The evaluation confirmed that the current calculation method accurately predicted the tensile resistance of CFDST members using RAC.

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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.