Racking strength and stiffness of cold-formed steel wall frames

Tian, Yu; Wang, Jian; Lu, Tianjian

doi:10.1016/j.jcsr.2003.10.002

Cited by 47 publications

(33 citation statements)

References 7 publications

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“…The contribution of the steel framing without any bracing system to the wall lateral resistance is relatively small, as pointed out in the tests carried out by Serrette and Ogunfunmi [25] and Tian et al [27]. Specifically, Tian et al [27] estimated that the frame itself offers about 5% of the total strength of a braced frame.…”

Section: Literature Reviewmentioning

confidence: 97%

“…A rather large number of experimental programs, aimed at investigating the seismic performance of CFS strap-braced stud walls, have been carried out (Adham et al [23], Serrette [24], Serrette [4], Serrette and Ogunfunmi [25], Fulop and Dubina [26], Tian et al [27], Al-Kharat and Rogers [7], Casafont et al [28], Moghimi and Ronagh [29] and Velchev et al [10]). In particular, the studies were focused on the monotonic and cyclic response of these systems in order to evaluate the contribution provided to the wall shear resistance by flat strap braces combined with gypsum sheathing boards in some cases.…”

Section: Literature Reviewmentioning

confidence: 99%

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Seismic response of Cfs strap-braced stud walls: Theoretical study

Macillo

Iuorio

Terracciano

et al. 2014

Thin-Walled Structures

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HIGHLIGHTS A critical analisys of design requirements for CFS strap-braced walls is discussed. The procedure for the evaluation of wall stiffness and resistance is illustrated. A case study involving the design of three residential buildings has been developed. 2 ABSTRACTThe use of cold-formed steel (CFS) profiles in low-rise residential buildings has increased in European construction sector. The reason of this interest is related to potentialities offered by this constructive system, which are the high structural performance, lightness, short construction time, durability and eco-efficiency. Nevertheless, the current structural codes, such as Eurocodes, do not provide enough information about the seismic design of this structural typology. In an effort to investigate the seismic response of CFS structures, a theoretical and experimental research has been carried out at University of Naples Federico II, with the main aim to support the spreading of these systems in seismic areas. This study focuses on an "all-steel design" solution in which strap-braced stud walls are the main lateral resisting system. In the present paper the outcomes of theoretical phase are shown with the aim of defining the criteria for the seismic design of such structures. In particular, a critical analysis of the requirements for CFS systems provided by the American code AISI S213 has been carried out by comparing it with those given by Eurocodes for traditional braced steel frames.

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Section: Literature Reviewmentioning

confidence: 97%

Section: Literature Reviewmentioning

confidence: 99%

Seismic response of Cfs strap-braced stud walls: Theoretical study

Macillo

Iuorio

Terracciano

et al. 2014

Thin-Walled Structures

View full text Add to dashboard Cite

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“…In this vein the studies of Gad et al [5], Fulop and Dubina [6], Tian et al [7], Serrette and Ogunfunmi [8], Kim et al [9], Yu [10], Al-Kharat and Rogers [11], Hatami et al [12], Zeynalian and Ronagh [13], Liu et al [14], Javaheri-Tafti et al [15], Mohebbi et al [16] and Zeynalian and Ronagh [17] are of note. However, few studies have been carried out in the field of steel sheet CFS shear walls.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on Response Modification Factor of CFS Walls Sheathed with Steel Sheets

Hatami¹,

Gholikhani²,

Farahbod³

et al. 2017

JESTR

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In the recent years, steel sheet CFS shear wall has been used as a ductile lateral load bearing system for light steel frames. In this study, lateral behavior of this shear wall system is evaluated by finite element modelling of the frame, steel sheet and their connections. The lateral response of the reference wall has been compared to the available experimental data to validate the model. The extended models includes a wide range of the wall parameters such as wall height, steel sheet thickness, spacing of screws, and thickness of the frame members. Also, the influence of these properties of the walls on seismic response modification factor (R) have been investigated. An equal energy concept considering post yielding energy absorption capacity is utilized to evaluate R factor and compare with those calculated according to Newmark and Hall method. This study also aims to realize the failure modes of the steel sheet CFS shear walls and suggest the methods to achieve an appropriate seismic performance. At the end, calculated R factors is compared to those prescribed values in the relevant codes.

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“…In this case, the definition of shear wall elements (studs, sheathing panels, sheathing-to-frame connections, and frame-to-foundation anchors), that constitute the main lateral resisting system in case of seismic actions, is a key point for the design. Currently, a relatively large database of experimental investigations carried out on different CFS wall assemblies subjected to in plane shear loading has been obtained by Gad et al [1], Tian et al [2], Branston et al [3], Fulop and Dubina [4], Landolfo et al [5], Langea and Naujoks [6], Serrette et al [7]. As result, the main parameters influencing the shear behaviour of walls have been identified.…”

Section: Introductionmentioning

confidence: 99%

A Specific Procedure for Seismic Design of Cold-Formed Steel Housing

Fiorino¹,

Iuorio²,

Landolfo³

2010

Volume 6 Number 1

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ABSTRACT:In the last years, the seismic performance of cold formed steel (CFS) systems has been object of study by a large number of research teams. The main parameters influencing the system behaviour under horizontal loads have been defined and the possible mechanisms of collapse have been identified. Therefore, at the moment, the development of upgraded specifications and design tools that could be readily used by designer is a must. For these reasons, this paper aims to propose a seismic design procedure that allows the shear wall components to be defined in few steps. The procedure is based on the recognized assumption that the best performance of a CFS shear wall is achieved when the sheathing-to-stud fasteners failure is reached. Moreover, it accounts the results of previous studies that defined the relation between behaviour of shear wall and fastener spacing. Hence, by defining three nomographs, the proposed procedure allows the sheathing-to-stud fasteners and all the other shear wall components to be defined. The latter are determined in accordance with capacity design criteria. Finally, the applicability of the presented procedure is verified through a case study.Keywords: Design nomographs, cold-formed steel, housing, linear dynamic analysis, nonlinear static analysis, seismic design, sheathing panels INTRODUCTIONThe growing demand of high performance housing is increasing the interest for cold-formed steel (CFS) structures. These structures are realized with a repetitive number of light gauge cold-rolled steel profiles, produced off-site in controlled environment and, then, assembled on-site with mechanical connections. These characteristics provide them lightness, rapid on-site erection, dimensional stability, high structural performance and considerable potential for recycling and reuse of all the materials. In particular, the spreading use of these constructions in countries as Japan shows the wide applicability of these systems also in seismic zones (Figure1). The global horizontal response of CFS structures under seismic actions basically depends on the shear response of CFS walls that are usually sheathed with metal sheets or panels (sandwich panels, wood-based or gypsum-based panels). Moreover, when the sheathing has adequate strength and stiffness and it is effectively connected with the frame, then the interaction between profiles, sheathing panels and sheathing-to-frame connections can be advantageously taken into account in the structural analysis. In this case, the definition of shear wall elements (studs, sheathing panels, sheathing-to-frame connections, and frame-to-foundation anchors), that constitute the main lateral resisting system in case of seismic actions, is a key point for the design. Currently, a relatively large database of experimental investigations carried out on different CFS wall assemblies subjected to in plane shear loading has been obtained by Gad et al. [7]. As result, the main parameters influencing the shear behaviour of walls have been identified. As a consequen...

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Racking strength and stiffness of cold-formed steel wall frames

Cited by 47 publications

References 7 publications

Seismic response of Cfs strap-braced stud walls: Theoretical study

Seismic response of Cfs strap-braced stud walls: Theoretical study

A Numerical Study on Response Modification Factor of CFS Walls Sheathed with Steel Sheets

A Specific Procedure for Seismic Design of Cold-Formed Steel Housing

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