A study on Cold-formed Steel Frame Connection: A review

Abstract

Abstract This paper is aimed to review the current researches on Cold-formed steel (CFS) structures, particularly for screw connections, welded connections, bolted connections and adhesive connections. Connection presents as a major parameter of the important elements for CFS framing system in order to attain its structural stability. The performance of different CFS connections is well-discussed in order to capture the behaviour of each type of connection. Based on the review assessment, the results highlighted that all types of connections except adhesive connections have shown the proper behaviour that can trigger the change of any design codes. Otherwise, adhesive connection is given several advantages that leads a novelty in the construction technology. Hence it still has some gaps of knowledge that are needed to be filled with comprehensive future researches.Keywords cold-formed steel, connection, screw, welded, bolted, adhesive Abstrak Makalah ini bertujuan untuk mengkaji ulang penelitian terkini mengenai struktur baja berbentuk dingin (CFS), terutama untuk sambungan sekrup, sambungan las, sambungan yang dilipat dan sambungan perekat. Sambungan merupakan parameter utama elemen penting sistem pembingkaian CFS untuk mencapai stabilitas strukturalnya. Kinerja koneksi CFS yang berbeda dibahas dengan baik untuk menangkap perilaku setiap jenis koneksi. Berdasarkan penilaian review, hasilnya menyoroti bahwa semua jenis koneksi kecuali koneksi perekat telah menunjukkan perilaku yang tepat yang dapat memicu perubahan kode desain apapun. Jika tidak, koneksi perekat diberi beberapa keunggulan yang mengarah pada kebaruan dalam teknologi konstruksi. Oleh karena itu masih ada beberapa celah pengetahuan yang perlu diisi dengan penelitian masa depan yang komprehensif.Kata Kunci baja tahan dingin, sambungan, sekrup, dilas, dilipat, perekat

Performance of a Cold Formed Steel Pedestrian Bridge under Static and Dynamic Loads

“…Design and strength evaluation of the 3D Warren truss-deck members and connections of the bridge model (Figure 2) were conducted based on the National Standard SNI 7971: 2013 [14] and reports [18,19]. To anticipate problems of screw loosening as previously mentioned, in fact the bridge model will dominantly undergo moving or dynamic loads thus amplifies problems of screw loosening, several connections were slightly modified by adding one bolt of 8 mm in diameter into the screw connections.…”

The experimental study of the effect of screw and adhesive connection in the variation of cold-formed roof truss framing system

“…Experimental data were gathered using potentiometers and failure pictures aiming to investigate the stiffness of the framing system. Tensile coupon test was also considered from the previous study in order to determine the material properties of the CFS sections [12].…”

“…Furthermore, Komara [12] conducted a research development with a model of variations in the number of screws and the area of adhesive in the connection of lightweight steel roof truss connection including to evaluate the structure of material behavior [13] [14], and [15]. The result is that the combination of the connection between the screw and adhesive can increase the capacity 3-4 times the screw or adhesive joint.…”

Evaluasi Kapasitas Struktur: Sistem Struktur Pelat dengan balok dan alternative struktur Flat Slab dengan Drop Panel

“…Selain itu tingkat inclinasi kegagalan atau spalling beton pada tulangan lentur gabungan yang didukung oleh flat slab berada pada 25° hingga 30° yang mana lebih besar tingkat kegagalannya pada flat slab tanpa drop panel dengan integrity reinforcement pada sudut terbesar dapat dilihat pada Gambar 2. Kegagalan akibat inklinasi atau perubahan sudut juga dianalisa oleh peneliti lain, khususnya sebagai parameter utama dalam menentukan fracture mechanism vs kapasitas tegangan dan regangan [7], [20], [29], [21]- [28]. Gambar 2.…”