Review on Composite Joints for Cold-Formed Steel Structures

Abstract

Introduction of the lightweight cold-formed steel (CFS) sections to building construction has been well-established these days due to its high structural performance, corrosion resistance, ease of construction and maintenance as well as aesthetic appearance. In the early of 21th century, researchers found out that the structural performance of the CFS can be improved significantly by integrating it with other materials, for instance, concrete, to create the composite system. This is due to concrete material is excellent in compression but less effective to resist tension force. There were little works being carried out and lack of technical literature regarding on the composite connections for CFS structural frames, especially on the composite beam-to-column joints. This paper aims to collect and review on the previous researches of composite joints for CFS structures from the past two decades. The review is made in three distinctive topics i.e. CFS beam-to-column joints, composite beam-to-slab joints and composite beam-to-column joints. Most of the investigations indicated that composite joint yields higher ultimate load and moment resistance compared to the non-composite joint.

Systematic literature review of cold-formed steel at elevated temperature scenario

“…In addition, Di Lorenzo and De Martino provided an outline of the CFS non-structural architectural and structural systems’ existing codification and ongoing research [ 17 ]. Other authors like Amsyar et al gathered and reviewed prior studies on composite joints for CFS structures, focusing on three distinctive topics: composite beam-to-column and beam-to-slab joints, and beam-to-column joints [ 18 ]. Usefi et al examined and summarized the key numerical research advancements on the lateral performance of CFS framed shear wall constructions [ 19 ].…”

Strength Capacity and Failure Mode of Shear Connectors Suitable for Composite Cold Formed Steel Beams: Numerical Study

“…However, so far, this new topic needs more investigation Materials 2021, 14, 3627 2 of 13 to fill a knowledge gap. Therefore, more experimental and numerical works are highly recommended [22]. Due to the higher cost of experimental works that make it difficult to provide sufficient information, numerical modeling has become an alternative reliable approach.…”

Analytical and Experimental Study on Reversible Steel-Timber Composite Connection Systems

“…Comparatively to traditional lightweight timber structures, CLT panels are higher strength-to-weight ratio, and due to its crossed-layers and massive nature, the structural capacity and fire resistance are improved, making it possible to design and build large timber structures that are competitive against steel and reinforced concrete but significantly more sustainable [6][7][8][9]. The CFS profiles are attractive options in commercial and residential buildings due to high structural performance, lightweight, ease of prefabrication and quick assembly on site [10][11][12]. The increasing application of CFS in the construction industry has brought researches to overcome the safety issues and to improve the use of CFS elements as primary structures [13].…”