The Seismic Behaviour of Curtain Walls: An Analysis Based on Numerical Modelling

Barnaure, Mircea; Voiculescu, Mihai

doi:10.2478/mmce-2013-0013

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…Curtain wall system mockups are often dynamically tested involving instrumentation and sensors as the standard method for collecting performance data (Khoraskani 2015;Gorenc 2016). While extremely beneficial due to their precision, cost and availability of sensors can lead researchers to collect limited data, particularly with full-scale specimens (Bârnaure and Voiculescu 2013;Antolinc et al 2014). While there have been several studies on experimental racking performance of curtain wall systems (Broker et al 2012;Wang et al 2015;Lu et al 2016;Aiello et al 2018), due to the cost of full-scale testing, alternatives methods are of interest.…”

Section: Introductionmentioning

confidence: 99%

Video Capture Technique Analysis of Four-Sided Structural Sealant Glazing Curtain Wall Systems for Racking Performance

Memari¹,

Simmons²,

Solnosky³

2018

IJAEC

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In dynamic cyclic testing of curtain wall system mockups, instrumentation and sensors are the standard methods for collecting performance data. While extremely beneficial due to their precision, cost and availability of sensors can lead researchers to collect limited data, particularly with full-scale specimens. The objective of this paper is to present a technique for better understanding of the behavior of four-sided structural sealant glazing (4SSG) curtain wall system mockups. This paper introduces the use of video capture technique for analysis of glazing curtain wall systems as a viable alternative to sensors to determine failure conditions. The development of the method is based on videotaping actual full-scale racking tests. The work presented here details video capture analysis that measured changes in distances between glass and frame, which was then used to calculate an effective shear strain of the structural silicone by a linear and quadratic method. Specimens tested included "unitized", four-sided structural sealant glazing (4SSG) curtain wall system mockups with a re-entrant corner subjected to cyclic racking displacements per American Architectural Manufacturers Association AAMA 501.6 protocol. The video capture analysis method concluded that an effective shear strain of 173% and 130% was calculated, respectively, from a linear method and a quadratic method for a structural silicone when failure initiated. Test data from the manufacturer indicates the ultimate shear strain of the structural silicone occurs at around 200%. The contribution of this work was to show that video analysis approach would be able to confirm the assumed in-plane movements of the glass relative to the frame during racking.

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Section: Introductionmentioning

confidence: 99%

Video Capture Technique Analysis of Four-Sided Structural Sealant Glazing Curtain Wall Systems for Racking Performance

Memari¹,

Simmons²,

Solnosky³

2018

IJAEC

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“…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. Furthermore, some finite element models have been developed by several authors [16][17][18][19][20][21][22] in order to predict the general behaviour of glazed curtain wall systems and the drift at glass cracking and fall-out during seismic actions. The present work is intended to lay the basis to understand how to calculate the drift limits at the actual damage state of glass façade.…”

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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“…Antolinc et al (2014) investigated, by means of full-scale shake-table experiments, the seismic capacity of glass walls interacting with timber frames. Further research studies related to the in-plane shear resistance of steel-glass or timber-glass composite walls are discussed in Memari et al (2003), Krstevska et al (2013), Bârnaure and Voiculescu (2013) and Ber et al (2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of circumferential sealant joints and metal supporting frames on the buckling behavior of glass panels subjected to in-plane shear loads

Amadio

2015

Glass Struct Eng

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In this paper, the structural stability of adhesively supported glass panels subjected to in-plane shear walls is assessed by means of extended finite-element (FE) investigations and analytical methods. Based on past research projects, careful consideration is given to glass panels with two-side circumferential linear adhesive connections and supporting metal frames, which are frequently used in practice for facades and building envelopes. In accordance with earlier research contributions, the effects deriving from adhesive connections and supporting frames of various stiffnesses are highlighted in terms of expected Euler’s critical shear loads and ultimate buckling resistances. Further extended nonlinear incremental studies are then discussed, and the major structural effects deriving from the interaction between the glass sheets, the circumferential adhesive joints, the supporting metal frames and additional small steel supports often used to transfer the maximum compressive reaction forces to the structural background are properly highlighted. As shown, compared to classical theories of ideally simply supported or fully clamped panels under the action of in-plane shear loads, the actual boundary conditions should be carefully taken into account. At the same time, the effects deriving from multiple combinations of several geometrical and mechanical aspects should be properly assessed. In the specific case, numerically derived buckling coefficients and fitting curves of practical use are proposed for an appropriate calculation of the expected Euler’s critical load for the studied configurations. Finally, the application and validity of a normalized Eurocode-based design buckling curve recalled from literature is also assessed. Based on the rather good agreement between FE and analytical calculations, the same approach is then proposed as practical and suitable design method for the studied loading and boundary conditions

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The Seismic Behaviour of Curtain Walls: An Analysis Based on Numerical Modelling

Cited by 9 publications

References 5 publications

Video Capture Technique Analysis of Four-Sided Structural Sealant Glazing Curtain Wall Systems for Racking Performance

Video Capture Technique Analysis of Four-Sided Structural Sealant Glazing Curtain Wall Systems for Racking Performance

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

Effect of circumferential sealant joints and metal supporting frames on the buckling behavior of glass panels subjected to in-plane shear loads

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