Recent research on cold formed steel buildings in Turkey


Karakale V.

Researches on Science and Art in 21st Century Turkey, Prof. Hasan ARAPGIRLIOGLU Assist. Prof. Atilla ATIK Prof. Robert L. ELLIOTT Assoc. Prof. Edward TURGEON, Editör, Gece Kitaplığı , İstanbul, ss.29-36, 2017

  • Basım Tarihi: 2017
  • Yayınevi: Gece Kitaplığı
  • Basıldığı Şehir: İstanbul
  • Sayfa Sayıları: ss.29-36
  • Editörler: Prof. Hasan ARAPGIRLIOGLU Assist. Prof. Atilla ATIK Prof. Robert L. ELLIOTT Assoc. Prof. Edward TURGEON, Editör

Özet

Cold-Formed Steel (CFS) buildings have been used for over a century in North America, Australia

and New Zealand. Extensive damage observed on reinforced concrete buildings after the 1999 Marmara

and 2011 Van earthquakes led to considering CFS buildings as an alternative choice in the Turkish

members and 85 % less than RC members), easy to handle, economical, dimensionally stable, and fast

constructed. Furthermore they are available in a variety of standard shapes and sizes to accommodate any

structural requirements. Also they can easily prefabricate at the construction site, or can be assembled

in panels at the factory. The structural system of CFS buildings composed of cold-formed steel members

that can be classified into two major types: (1) individual structural framing members and (2) panels

and decks. General view of a CFS building structural system and its connection details is shown in Fig.

1. CFS members sections are cold-formed from carbon or low alloy steel sheet, strip, plate, or flat bar in

cold-rolling machines or by press brake or bending brake operations. The thicknesses of such members

usually range from 0.0149 in. (0.378 mm) to about 1/4 in. (6.35 mm) even though steel plates and bars

as thick as 1 in. (25.4 mm) can be cold-formed into structural shapes. Fortunately, under vertical loading

the design principles of the thin-walled steel profiles is well established and codified. However, under

lateral loadings such as wind and earthquake loads efficiently design is needed. Commonly, in cold-formed

steel houses the lateral load resisting system is Sheathed Cold-Formed Steel Stud Shear Walls (SSWs).

These shear walls are generally obtained by assembling of single internal and coupled back-to-back external

profiles (studs) which have a lipped channel cross-section. The studs are interconnected at each end by

members (tracks) having unlipped channel cross-sections, in such a way to realize a cold-formed steel

frame called ‘stud wall’. This frame is usually sheathed with wood- based and/or gypsum-based panels

but, in some cases, steel sheets or composite sandwich panels are used.