Prediction of seismic cracking capacity of glazing systems

O'Brien, William C.; Memari, Ali M.; Eeri, M.

doi:10.12989/eas.2015.8.1.101

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…There are two more important studies [11,12] about behavior of curtain walls under horizontal actions experimentally. O'Brien, et al [13] has been formulated a closed-form equation to predict a glass panel cracking failure drift. These researches rather describes steel profiles, material tests and the history of facade systems than the effect of seismic loads.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response of Anchorage Elements Used in Curtain Wall Systems

Pakdamar

Bozkurt²

2020

Sakarya University Journal of Science

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Utilizing curtain wall systems as outer covering of a building has been enormously increasing for the last years. Past earthquakes have revealed the wrong design of curtain wall systems connections that can seriously endangers human life. In this study, design procedures proposed by different international and national earthquake codes and specifications to compute the forces in the connection of curtain wall systems are summarized. As a real example, a regular 30-storey reinforced concrete building is considered, and a Finite Element Model is created for this structure. A detailed model for the building and the curtain wall systems and their connection anchors are considered. The axial and shear forces in the anchors are computed using the average results of seven sets of time history analyses. The results are compared with the results of building model using spectrum modal combination analyses and the forces in the connection anchors are proposed by different Specifications; Turkish Earthquake Code 2007, Turkish Earthquake Code 2018, Federal Emergency Management Agency, European Standard. As a result, it can be concluded that the seismic forces used for the design of anchors of the curtain wall systems are better estimated by the specification suggested by Turkish Earthquake Code 2007 compared to the detailed model results.

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Section: Introductionmentioning

confidence: 99%

Seismic Response of Anchorage Elements Used in Curtain Wall Systems

Pakdamar

Bozkurt²

2020

Sakarya University Journal of Science

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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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“…A substantial number of laboratory and analytical studies using in-plane static and dynamic racking tests to assess the seismic performance of FGF systems have been performed over the past few decades (Behr, 2006;Behr et al, 1995;Memari et al, 2014;O'Brian et al, 2015;Sakamoto, 1978;Sakamoto et al, 1984). The most extensive FGF system testing programmes were performed at the University of Missouri-Rolla (UMR) and Pennsylvania State University.…”

Section: Introductionmentioning

confidence: 99%

Analytical study of point fixed glass façade systems under monotonic in-plane loading

Sivanerupan

Wilson

Gad

et al. 2016

Advances in Structural Engineering

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The point fixed glass façade system is popular and considered a more elegant façade option compared to the framed glass façade system mainly for storefront, walkways and lobby areas in buildings. Point fixed glass façade system is fixed to the support structure using special bolt fittings and structural spider arms. Generally, the racking performance of these systems is not considered at the design stage in low to moderate seismic region and the system may be vulnerable if there is insufficient in-plane drift capacity compared with the demand imposed during earthquakes and wind actions. A unique full-scale in-plane racking laboratory test on a typical point fixed glass façade system was conducted and a maximum drift of 2.1% was measured before catastrophic failure. Non-linear finite element models were then developed and benchmarked against experimental results. The experimental results and finite element analyses indicated that a significant amount of the drift capacity was attributed to the rigid body translation in the façade system connections at the built-in oversize holes provided for construction tolerances. In this article, the laboratory test setup and the experimental results are summarised, and the finite element modelling methodology and non-linear analysis approach undertaken using ANSYS for the experimental test are discussed along with number of parametric studies.

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Prediction of seismic cracking capacity of glazing systems

Cited by 5 publications

References 13 publications

Seismic Response of Anchorage Elements Used in Curtain Wall Systems

Seismic Response of Anchorage Elements Used in Curtain Wall Systems

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

Analytical study of point fixed glass façade systems under monotonic in-plane loading

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