Seismic Behavior of Curtain Walls Containing Insulating Glass Units

Memari, Ali M.; Behr, Richard A.; Kremer, Paul A.

doi:10.1061/(asce)1076-0431(2003)9:2(70)

Cited by 48 publications

(28 citation statements)

References 10 publications

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“…The most extensive testing programs performed on glass panel systems to-date have been those at the University Missouri-Rolla (UMR) and Penn State (Behr andBelarbi, 1995, 1996;Behr, 1998;Memari et al, 2003Memari et al, , 2004. These tests consistently involved 5'x6' sized windows (AR = 0.83), tested in an in-plane loading rig, designed specifically for the window systems (Figure 1.3).…”

Section: Previous Work and State-of-practicementioning

confidence: 99%

Experimental Evaluation of the In-Plane Seismic Behavior of Storefront Window Systems

Eva

2011

Earthquake Spectra

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Storefront window systems have been shown to suffer significant damage during earthquake loading, resulting in the potential for human injuries and significant economic losses. Despite the potential for film-coated windows to minimize seismic-induced damage to window systems, limited study has been undertaken. Furthermore, no thorough study of the effects of loading histories on window system performance has been performed to-date. Finally, previous studies have been limited in terms of their variation of window system geometry. In this work, three variables of interest were studied through in-plane seismic racking experiments of storefront window systems, namely: (i) loading protocol, (ii) window film type and attachment, and (iii) aspect ratio. This paper presents the overall experimental program, the identified damage modes and associated drift limits, and trends associated with variation of the window film and aspect ratio. A companion paper in this issue (Hutchinson et. al. 2011) summarizes studies of the effects of load protocol.

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Section: Previous Work and State-of-practicementioning

confidence: 99%

Experimental Evaluation of the In-Plane Seismic Behavior of Storefront Window Systems

Eva

2011

Earthquake Spectra

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“…Such a score is intended as an indicator of the seismic vulnerability of the wall so that a retrofit action can be undertaken by building owners. O'Brien et al [12] formulated a closed-form equation to predict the drift corresponding to glass cracking failure for several curtain wall and storefront systems, on the basis of various experimental campaigns [13][14][15]. Memari et al [16] performed a pilot study to create finite element modeling formulations of glass curtain walls under in-plane dynamic loads and identified various levels of damage in the load-displacement curve acquired during an experimental test.…”

Section: Introductionmentioning

confidence: 99%

In-Plane Seismic Response of a Glazed Curtain Wall: Full-Scale Laboratory Test and Non-Linear Modelling

Aiello¹

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Glass facades are one of the most used building envelope systems in contemporary architecture. Their increasing applications are basically driven by the research of aesthetic quality, transparency and natural illumination, which raises energy efficiency of buildings. However, after recent earthquakes, buildings designed by current seismic codes often presented the structural part completely intact, conversely several damages to non-structural components. Among the latter, the fall from a height of facade components, such as sharp pieces of glass or aluminum, cannot be overlooked. They, in fact, could represent a threat for occupant and pedestrian safety, as well as a significant economic loss due to downtime and their restoration or replacement. The present paper describes a cyclic experimental test performed at the Construction Technologies Institute (ITC) of the Italian National Research Council (CNR) for seismic performance assessment of a full-scale aluminum-glass façade, currently available on the market. A nonlinear finite element model has been calibrated according to experimental results. Finally, an analytical procedure to simulate load-displacement relationship has been provided. This work aims at enhancing the knowledge about the experimental assessment of seismic performance of glazed systems and eventually suggesting improvements or changes in the code approaches in order to reduce the potential risks related to their damages during earthquakes.

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“…Because the structural stiffness and the bearing capacity are mainly provided by the cable members, the monolayer cable net systems are characterized by significant geometrical nonlinear behaviors. And this nonlinearity makes it pretty complicated to analyze the structural responses under dynamic excitations, such as seismic actions (Memari et al [1]) and fluctuating wind pressures. To accurately compute these dynamic responses, a response history integration process is necessarily needed.…”

Section: Introductionmentioning

confidence: 99%

A linearized approach for the seismic response analysis of flexible cable net structures

Xiang

Luo

Guo

et al. 2016

Soil Dynamics and Earthquake Engineering

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Keywords:Cable net structure Nonlinear seismic response Equivalent single-degree-of-freedom system Equivalent linearization Non-iterative approach Seismic response spectrum Flexible curtain wall a b s t r a c t Cable net structures are characterized by significant geometrical nonlinear properties. The linear modal superposition method (LMSM), which ignores the effect of nonlinearity, is believed not suitable for the seismic response analysis of this kind of structures. To conquer the drawback of LMSM, a non-iterative linearization method (NILM) is proposed in this paper. An energy parameter named the "stiffness parameter" is utilized in generating the nonlinear equivalent single degree of freedom (ESDF) systems for the dominant vibration modes of cable nets. The nonlinear stiffness of an ESDF system is simulated by a quadratic function about the equivalent displacement. Based on a stochastic linearization process, the relationship between the equivalent linear stiffness and the displacement response of a modal ESDF system is established. Then the structural responses are computed according to the design response spectra through a non-iterative procedure. Finally, the effectiveness of the proposed NILM is illustrated by a numerical example that carried out on a trapezoid-shaped cable net supported curtain wall structure. It is demonstrated that the proposed NILM, which takes the stiffness hardening effect into consideration, could not only yield better results than the LMSM does, but also exhibit satisfying timesaving property over the nonlinear RHA.

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Seismic Behavior of Curtain Walls Containing Insulating Glass Units

Cited by 48 publications

References 10 publications

Experimental Evaluation of the In-Plane Seismic Behavior of Storefront Window Systems

Experimental Evaluation of the In-Plane Seismic Behavior of Storefront Window Systems

In-Plane Seismic Response of a Glazed Curtain Wall: Full-Scale Laboratory Test and Non-Linear Modelling

A linearized approach for the seismic response analysis of flexible cable net structures

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