Design-Oriented Model for Capturing the In-Plane Seismic Response of Partition Walls

Wood, Richard L.; Hutchinson, Tara C.

doi:10.1061/(asce)st.1943-541x.0000899

Cited by 19 publications

(15 citation statements)

References 12 publications

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“…Among them, damage at the connections between various elements of the walls (e.g., gypsum board‐to‐stud/track connections) was predominant. Similar observations were reported in recent experimental studies on the seismic performance of partition walls . The experimental studies also revealed that the force and displacement characteristics and behavior of partition walls (i.e., stiffness, strength, degradation, and pinching) depended on the performance of the wall connections as well as the properties of framing elements.…”

Section: Introductionsupporting

confidence: 87%

“…Adopting the data from previous experiments performed by Restrepo and Bersofsky in addition to data from two new experiments, Restrepo and Lang postulated a four‐line piecewise backbone response envelop for gypsum partition walls. Recently, Davies et al and Wood and Hutchinson used the experimental data from the NEESR‐GC project (NEESR‐GC: Simulation of the Seismic Performance of Nonstructural Systems) to calibrate equivalent analytical models that represented the in‐plane hysteresis behavior of cold‐formed steel‐framed partition walls.…”

Section: Introductionmentioning

confidence: 99%

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Analytical model for the in‐plane seismic performance of cold‐formed steel‐framed gypsum partition walls

Rahmanishamsi

Soroushian

Maragakis

2015

Earthq Engng Struct Dyn

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Summary This paper proposes an experimentally verified procedure to analytically model cold‐formed steel‐framed gypsum nonstructural partition walls considering all the critical components. In this model, the nonlinear behaviors of the connections are represented by hysteretic load‐deformation springs, which have been calibrated using the component‐level experimental data. The studs and tracks are modeled adopting beam elements with their section properties accounting for nonlinear behavior. The gypsum boards are simulated by linear four‐node shell elements. The proposed procedure is implemented to generate the analytical models of three full‐scale partition wall specimens in the OpenSees platform. The specimens were tested as a part of the NEESR‐GC Project on Simulation of the Seismic Performance of Nonstructural Systems. Force‐displacement responses, cumulative dissipated energy, and damage mechanisms from the analytical simulation are compared to the experimental results. The comparison shows that the analytical model accurately predicts the trend of the response as well as the possible damage mechanisms. The procedure proposed here can be adopted in future studies by researchers and also engineers to assess the seismic performance of partition walls with various dimensions and construction details, especially where test data are not available. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Analytical model for the in‐plane seismic performance of cold‐formed steel‐framed gypsum partition walls

Rahmanishamsi

Soroushian

Maragakis

2015

Earthq Engng Struct Dyn

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“…One widely used nonstructural system, which sustained extensive damage in the recent earthquakes, is cold-formed, steel-framed gypsum partition wall (Restrepo and Bersofsky, 2010). Damage to these walls has usually been triggered at very low seismic demand and has led to the loss of property and interruption of postearthquake building operations (Wood and Hutchinson, 2014).…”

Section: Introductionmentioning

confidence: 99%

Analytical Model for the Seismic Performance of Cold-Formed Steel-Framed Gypsum Partition Walls

Rahmanishamsi¹,

Soroushian²,

Maragakis³

2015

Structures Congress 2015

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Steel-framed gypsum partition walls are comprised of light-gauge coldformed steel studs and tracks, gypsum boards and the screw connections between them. The tracks are also fastened to the structural slab with power-actuated fasteners. Previous experimental studies have shown that the seismic performance of partition walls depends on the force and displacement characteristics of these components. A series of component-level experiments were performed, aiming to investigate both monotonic and cyclic behavior of partition wall components, including gypsum-tostud, stud-to-track, and track-to-slab connections. The experimental data was then utilized to propose and validate a series of nonlinear hinge models for these components in the OpenSees. Subsequently, the hinge models were used in conjunction with the analytical models of gypsum boards and steel studs to develop a comprehensive analytical model for a typical partition wall assembly. The model was calibrated using the available data from a full-scale test on the steel-framed gypsum partition walls.

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“…For cyclic loading, the overall energy dissipated can be determined by the summation of all energies dissipated in each cycle. Researchers (Ali et al, 2008;Filiatrault et al, 2004;Wood and Hutchinson, 2012) calculated the energy dissipated for each half cycle of loading and then accumulated for the total cycles. The mechanical Energy (E) is the work done (W) by the applied Force (F) to move the wall top horizontally in plane distance (ds); W = E = ∫ F.ds.…”

Section: Energy Evaluationmentioning

confidence: 99%

Experimental Evaluation of the Raking Energy in Damping System of Steel Stud Partition Walls

Amer¹,

Hamoush²,

Abu-Lebdeh³

2015

American Journal of Engineering and Applied Sciences

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Nonstructural partition walls are usually specified based on the best practice without any structural design calculations. However, given the likely severe earthquake damage to nonstructural components and the substantial cost of repair to such components, it is imperative that we develop an understanding of the seismic response of the nonstructural partition walls when subjected to earthquake loading conditions. The main objective of this investigation is to experimentally evaluate the effectiveness of utilizing low cost damping protection system in improving the seismic performance of the steel stud partition walls. Nine full scale wall specimens of 4.0 ft wide and 8.0 ft high were divided into three groups of different damping systems. Three specimens were constructed with Single Damping System (SDS), three specimens with Double Damping System (DDS) and three wall specimens with No-Damping System (NDS) in order to have a basis for comparison. Wall specimens were subjected to in-plane cyclic loadings for drifts ranging from 0.25" to 2.75" (0.3 to 3% drifts of wall height). Seismic evaluation included both ductility capacity and energy dissipation. Test results revealed that, although, damping does not influence wall capacity, it improves ductility and delays damages to later drifts. Incorporating damping system increased wind load capacity and seismic load capacity by 50 and 700% respectively. Also, ductility factors and cumulated dissipated energy increased by 40 and 112% respectively for SDS and 83 and 137% for DDS. The research study concluded that the low cost protection damping system significantly improved the seismic performance of the partition wall systems.

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Design-Oriented Model for Capturing the In-Plane Seismic Response of Partition Walls

Cited by 19 publications

References 12 publications

Analytical model for the in‐plane seismic performance of cold‐formed steel‐framed gypsum partition walls

Analytical model for the in‐plane seismic performance of cold‐formed steel‐framed gypsum partition walls

Analytical Model for the Seismic Performance of Cold-Formed Steel-Framed Gypsum Partition Walls

Experimental Evaluation of the Raking Energy in Damping System of Steel Stud Partition Walls

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