Experimental study of composite cold-formed steel and timber flooring systems with innovative shear connectors

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-10-11 DOI:10.1016/j.tws.2024.112571

Nathan Vella , Pinelopi Kyvelou , Spiridione Buhagiar , Leroy Gardner

引用次数: 0

Abstract

An experimental investigation into the structural response of cold-formed steel-timber composite flooring systems with innovative and irregularly spaced shear connectors is presented in this paper. Five composite beam tests and a series of supporting material and push-out tests were carried out. The obtained results showed that the innovative shear connectors enabled the generation of considerable composite action, resulting in up to about 45 % increases in load-carrying capacity and 15 % and 20 % increases in the initial and mid-range stiffnesses respectively over the non-composite system. Methods for predicting the effective flexural stiffness and moment capacity of the examined cold-formed steel-timber composite beams are presented and validated against the derived physical test data. It is shown that accurate predictions for both the flexural stiffness and moment capacity can be obtained, with mean prediction-to-test ratios of 0.93 and 0.91 respectively.

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采用创新剪力连接件的冷弯型钢和木地板复合系统的实验研究

本文介绍了采用创新的不规则间距剪力连接件的冷弯型钢木复合地板系统的结构响应实验研究。共进行了五次复合梁试验以及一系列支撑材料和挤出试验。结果表明，创新的剪力连接件能够产生相当大的复合作用，与非复合系统相比，承载能力提高了约 45%，初始刚度和中期刚度分别提高了 15% 和 20%。本文介绍了预测冷弯钢木复合梁有效抗弯刚度和弯矩承载力的方法，并根据得出的物理测试数据进行了验证。结果表明，可以获得准确的抗弯刚度和弯矩承载力预测值，预测值与测试值的平均比率分别为 0.93 和 0.91。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.