Durability of SG-laminated reinforced glass beams: Effects of temperature, thermal cycling, humidity and load-duration

Louter, Christian; Belis, Jan; Veer, Fred; Lebet, Jean‐Paul

doi:10.1016/j.conbuildmat.2011.07.046

Cited by 73 publications

(33 citation statements)

References 5 publications

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“…At this location, the mechanical response is therefore more compliant than before, which causes a significant reduction of stiffness in the beam. This is in line with the observation of (Louter et al 2012a). Previous tests on type A and B beam showed that their maximum load carrying capacity is limited by glass fracture.…”

Section: Type C Beamssupporting

confidence: 78%

Laminated connections for structural glass components: a full-scale experimental study

2016

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The use of glass material for structural components has drastically increased in the last decade. Among others, a laminated connection is a type of adhesive joint that makes use of foil interlayer adhesive to transfer forces between glass and metal parts. In this work, the use of embedded laminated connections is studied as connection between glass beams. In particular, it is experimentally investigated the use of embedded connections laminated to make a moment joint between laminated glass beam segments. The mechanical behaviour of such glass beams with embedded laminated connections is studied under different loading scenario. Tests are performed under monotonic, creep and damage protocol. Different geometry and location of the embedded laminated connections are compared. The results of this work showed that embedded In particular, a redundant and ductile structural behaviour of the moment connection can be achieved. Furthermore, results also showed that beams with embedded laminated connections are able to resist to severe damage scenarios and to sustain the applied load over time, even in the case of breakage of all glass panels.

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Section: Type C Beamssupporting

confidence: 78%

Laminated connections for structural glass components: a full-scale experimental study

2016

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“…According to the references available in the literature of embedded connections with SentryGlas® tested at different temperatures (Louter et al 2012a(Louter et al , 2010Puller et al 2011;Puller and Sobek 2012;Santarsiero 2015;Santarsiero and Louter 2015a), there is a drop of the connection resistance a maximum of 50-70% between 23 and 40 • C. The specific value in the range depends on the connection design. The reduction arrives to a maximum of 85-95% at 60 • C which is above the glass transition temperature of the SentryGlas®.…”

Section: Resultsmentioning

confidence: 99%

“…It is possible to find examples of tests with different designs and configurations in the literature (Carvalho et al 2011;Carvalho and Cruz 2012;Peters et al 2007;Puller and Sobek 2012). An innovative design of a glass beam reinforced by stainless steel square hollow section laminated SentryGlas® has been included in Louter et al (2012aLouter et al ( , b, 2010 and Louter (2009). These papers describe the test campaign which comprises pull-out and full-size glass beam tests at several temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Although in the test campaign of Santarsiero et al (2016b) and Santarsiero (2015) the load duration of the tests are not enough long to be considered as midterm loading, the results indicates clearly that the resistance of these types of connections drops for smaller strain rates. In Louter et al (2012a) and Santarsiero and Louter (2017) creep tests are carried out to fullscale experimental prototypes, but without focusing on the long-term resistance of the adhesive connection in function of the temperature. Denonville et al (2013) tested small metal sheets embedded in laminated glass at different temperatures under several levels of longterm loading.…”

Section: Introductionmentioning

confidence: 99%

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Glass fins with embedded titanium inserts for the façades of the new Medical School of Montpellier

Torres¹,

Guitart²,

Teixidor³

2017

Glass Struct Eng

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The new Medical School of Montpellier, designed by François Fontès, is enclosed by several façades stiffened by the use of glass fins up to 12.71 m high. The main façade assures the monumentality of the institution with its length of more than 60 m. The façade glass panels, with a maximum size of 3.8 × 2.8 m, are stacked transferring the dead load to the bottom panels through plastic setting blocks. The façade panels are fixed with patch-fittings bolted to titanium inserts embedded in the vertical glass fins. The structural system is designed to resist seismic actions and to accommodate the displacement of the main structure under an earthquake scenario. The stability to lateral buckling and under seismic loads is guaranteed by a system of cables and rods which transmits the in-plane forces to the main structure. The post-breakage behaviour of the multilaminate heat-strengthened glass panels and the design of the façade guarantee the stability even under very aggressive accidental scenarios. The paper contains the main issues about the fabrication of titanium inserts laminated with SentryGlas® interlayer. The verification methodology of the glass fin with embedded titanium connections in terms of strength and stability is described. In particular, non-linear buckling analysis J. Torres (B) · N. Guitart · C. Teixidor Bellapart, Les Preses, Spain e-mail: jtorres@bellapart.com N. Guitart e-mail: nguitart@bellapart.com C. Teixidor e-mail: cteixidor@bellapart.com and stability checks based on Eurocodes are proposed. The numerical analyses were completed with pullout tests of aged specimens in order to determine the resistance of the adhesive connections. Finally, a fullscale glass fin was submitted to a three-point bending test to validate the design including the post-breakage behaviour. A brief description of the construction phase is also included.

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“…The whole setup was placed inside an actively controlled climatic chamber thereby guaranteeing a relative humidity of 55% and a test temperature of either 23 or 60 • C. Prior to the tests, the beams were conditioned for 24 h in the climatic chamber to ensure an even test temperature throughout the specimens (Louter et al 2012). Three specimens were tested in each temperature series.…”

Section: Bending Setupmentioning

confidence: 99%

Experimental investigation of multi-span post-tensioned glass beams

et al. 2017

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This paper presents a study on posttensioned glass beams in a statically indeterminate system. In order to increase the safety of structural glass beams, ductile reinforcement can be added to glass beam sections providing secondary load carrying mechanism in case of glass breakage. In the here investigated post-tensioned system, the reinforcement tendons are additionally pre-tensioned, introducing compressive pre-stress in the beam in order to increase the apparent tensile strength of glass. The system is tested in five-point bending at 23 and 60 • C in order to investigate the basic structural performance and the influence of temperature increase on the initial cracking load and the behaviour of the cracked beam. The benefit of the here investigated statically indeterminate system is a more economical design, i.e. lowering of the bending moment in the span of an equivalent simply supported system by continuing the beam over the central support. The efficiency of the applied system is compared to a reinforced beam system produced in the same batch with similar overall dimensions. The results show an increase of initial cracking load of the post-tensioned beams due to the applied pre-stress and a ductile post-cracking response, reaching high ultimate loads prior to failure. At 60 • C both reinforced and post-tensioned beams show lower initial cracking loads and limited post-cracking ductility but still significant load reserve with ultimate loads well above the initial cracking loads, providing safe failure behaviour.

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Durability of SG-laminated reinforced glass beams: Effects of temperature, thermal cycling, humidity and load-duration

Cited by 73 publications

References 5 publications

Laminated connections for structural glass components: a full-scale experimental study

Laminated connections for structural glass components: a full-scale experimental study

Glass fins with embedded titanium inserts for the façades of the new Medical School of Montpellier

Experimental investigation of multi-span post-tensioned glass beams

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