Steel plate shear walls with outriggers. Part II: Seismic design and performance

Gorji, Meisam Safari; Cheng, J. J. Roger

doi:10.1016/j.jcsr.2017.04.007

Cited by 10 publications

(3 citation statements)

References 6 publications

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“…e diagonal tension strips exert substantial axial and flexural demands on columns, leading to a condition that makes columns susceptible to premature failure. To decrease column demands in SPSWs, researchers have come up with a number of methods such as offsetting infill plates on each story [1], using an outrigger system in SPSW structures [19,20], using coupling beams to link two SPSWs together [21], perforating infill plates to decrease SPSW stiffness and strength [22], applying low-yield point steel to infill plates [23], using a pin-ended horizontal strut at the midheight of columns on every story [24], utilizing reduced beam sections for the beam-to-column connections [25,26], using a lightgauge plate for infill plate [8], introducing secondary columns as new boundary elements [27], and releasing infill plates from columns and connecting them to the beams only [28][29][30][31][32][33]. e latter option is of interest in this study.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Performance of Corrugated Steel Plate Shear Walls with Beam‐Only‐Connected Infill Plates

Ghodratian-Kashan

Maleki

2021

Advances in Civil Engineering

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Lately, Corrugated Steel Plate Shear Walls (CSPSWs) have gained significance and reputation for being effective lateral force-resisting systems. Corrugated plates are characterized by greater out-of-plane stiffness and buckling stability than flat plates, ensuring their enhanced hysteretic behavior. In ordinary Steel Plate Shear Walls (SPSWs), infill plates are fixed to beams and columns. But, detaching the infill plate from columns and connecting it to the beams only is assumed here as a method for reducing column demands. The current study explores the cyclic performance of CSPSWs with beam-only-connected infill plates. The design of a one-story single-bay specimen was done and its finite element model was developed. Parametric studies have targeted CSPSWs with different geometric variables, including orientation, thickness, and aspect ratio of the infill plate. Noteworthy responses were ultimate strength, initial stiffness, energy dissipation capacity, and force-deformation relationship. The obtained results indicated that selecting the right geometrical parameters could yield a desirable cyclic performance. Finally, an analytical method was proposed for calculating the ultimate shear strength of beam-only-connected CSPSWs.

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Section: Introductionmentioning

confidence: 99%

Cyclic Performance of Corrugated Steel Plate Shear Walls with Beam‐Only‐Connected Infill Plates

Ghodratian-Kashan

Maleki

2021

Advances in Civil Engineering

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“…SPSWs with infill plates attached only to the beams should be useful for retrofitting and strengthening steel frames that have inadequate stiffness and strength with reduced labour and material savings due to the absence of the connections between columns and infill plate edges [14].Park [13] reported that SPSWs with infill plates connected only to the beams exhibited an excellent deformation capacity equivalent to that of the walls with fully connected infill plates, although its load-carrying capacity and energy dissipation capacity decreased. Some researchers investigated the effect of outrigger beams on the behaviour of steel plate shear walls [16][17][18]. The results show that stiffness load carrying capacity and energy absorption of the system increased considerably.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Steel Plate Shear Wall in Multi Span Moment Frame with Various Infill Plate Connection to Column

2018

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Steel plate shear walls consist of thin infill steel plates attached to beams, called (horizontal boundary elements, HBEs), and columns (vertical boundary elements, VBEs) in structural steel frames. The thin unstiffened web plates are expected to buckle in shear at low load levels and develop tension field action, providing ductility and energy dissipation through tension yielding of the web plate. HBEs are designed for stiffness and strength requirements and are expected to anchor the tension field formation in the web plates. VBEs are designed for yielding of web plates and plastic hinge formation at the ends of the HBEs. This design approach may result in very large demand on boundary frame members, especially VBEs in most cases. Several methods such as using LYP, perforating the infill plate and omitting connection of infill plate to columns have been proposed to reduce the moment and axial force demands on the VBEs. The main purpose of this research is to study the behavior of steel plate shear walls with various connection of infill plate to columns in multi span moment frames. A numerical study has been performed in order to investigate the behavior of such a system. The results of proposed system were compared with those of the conventional SPSWs. Results show that reducing the infill plate connection to columns will reduce the axial forces in columns.

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“…This is due primarily to the fact that while in RCSWs, the entire width of the wall contributes to the overturning resistance, the SPSW systems, just like braced frames, employ only their columns to resist overturning moments, which in turn result in large sections for these elements . To overcome this issue, researchers investigated alternative SPSW configurations such as coupled SPSW (C‐SPSW) systems and SPSWs with outrigger (SPSW‐O) systems, which also offer the flexibility to accommodate architectural demands for openings within the bay.…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior of coupled steel plate shear walls with simple boundary frame connections

Gorji

Cheng

2018

Earthq Engng Struct Dyn

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Summary The coupled steel plate shear wall (C‐SPSW) configuration has been investigated by researchers as a means of improving the overturning stiffness and architectural flexibility of SPSW structures. While C‐SPSWs have been shown to exhibit excellent seismic performance, the fabrication cost associated with the high number of moment‐resisting connections used in such systems is a potential detraction to their use as an economical solution. Past research has shown that the hysteresis response of SPSWs with simple frame connections is significantly pinched, and as such, most seismic codes prohibit their use in high seismic areas. However, when used in the C‐SPSW configuration, a dual system is formed in which the coupling beams not only improve resistance to overturning but also provide substantial lateral strength and energy dissipation capacity. This paper presents an exploration of the potential to improve the economy of C‐SPSWs by using the simple boundary frame connections. First, employing the principles of plastic analysis, an attempt is made to quantify the contribution of the coupling beams to the overall lateral load resistance of the system. Then, to evaluate the seismic performance of such C‐SPSW systems and allow for the comparison with that of the C‐SPSWs with rigid frames, several prototypes are designed and analyzed using a series of nonlinear response history and pushover analyses. The results indicated that the C‐SPSWs with simple boundary frames exhibited satisfactory seismic performance comparable with that of the C‐SPSWs with rigid frames under both the 10/50 and 2/50 hazard levels, while allowing for reduced fabrication costs.

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Steel plate shear walls with outriggers. Part II: Seismic design and performance

Cited by 10 publications

References 6 publications

Cyclic Performance of Corrugated Steel Plate Shear Walls with Beam‐Only‐Connected Infill Plates

Cyclic Performance of Corrugated Steel Plate Shear Walls with Beam‐Only‐Connected Infill Plates

Behaviour of Steel Plate Shear Wall in Multi Span Moment Frame with Various Infill Plate Connection to Column

Seismic behavior of coupled steel plate shear walls with simple boundary frame connections

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