Robust fire design of single plate shear connections

Selamet, Serdar; Garlock, María Eugenia Moreyra

doi:10.1016/j.engstruct.2010.04.011

Cited by 39 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bu davranış için yaklaşık bir analitik çözüm bulunmuştur [5,6,7], ayrıca deney sırasında gözlemler çöküş mekanizması hakkında bilgi vermiştir [8,9]. Beton döşemenin, çekme kuvvetlerine karşı membran mekanizması ile yangına karşı daha dirençli olduğu bilinmesine rağmen, çelik kesme bağlantılarının bu çeşit bir sistemde dönme ve çekme kuvvetine maruz kalıp kalmayacağı tartışılan bir konudur [10,11,12]. Çelik bağlantılar, yapıların sabit kalması, özellikle kolonların yatay desteklenmesi ve burkulma yaşamaması için önemli bir fonksiyona sahiptir [1, 13,14].…”

Section: Introductionunclassified

Çelik-Beton Kompozit Kat Döşemesi Yangın Dayanım Deneyi

Selamet¹,

Yolaçan²

2017

Teknik Dergi

Self Cite

View full text Add to dashboard Cite

Bu çalışma kapsamında Türkiye'de araştırma odaklı ilk çelik-beton kompozit kat döşemesi yapısal yangın deneyi gerçekleştirilmiştir. Bu çalışma, Türkiye'de gerek yangın yönetmelikleri açısından gerekse yapısal yangın konusunda teorik, nümerik ve deneysel araştırmalardaki eksiklikleri gidermeyi amaçlamaktadır. Yüksek katlı çelik bir yapı için tasarlanmış kompozit döşemenin iki kenarında simetrik bir birleşim mekanizması kullanılmış ve bu şekilde yangın fırını alanından daha büyük bir döşeme alanı testi imkânı sağlanmıştır. Yangın fırınına monte edildikten sonra döşemenin alt yüzeyi ISO834 standart yangın eğrisiyle 105 dakika ısıtılmış ve sonrasında 90 dakika kontrollü olarak soğutulmuştur. Deney sırasında yapının sehim ve sıcaklık ölçümleri yapılmıştır. Alınan sonuçlar, beton döşemenin membran davranışı göstererek yük taşıyıcı özelliğini yangın boyunca devam ettirdiğini göstermektedir. Dolayısıyla kompozit kat döşemelerinde ikincil çelik kirişlerin yalıtımsız kalması önerilmektedir.

show abstract

Section: Introductionunclassified

Çelik-Beton Kompozit Kat Döşemesi Yangın Dayanım Deneyi

Selamet¹,

Yolaçan²

2017

Teknik Dergi

Self Cite

View full text Add to dashboard Cite

show abstract

“…A review of literature indicates that there have been a number of numerical studies to model the fire performance of different types of connections. The most notable studies on connections are those by Liu [10], El-Houssieny et al [11], Al-Jabri et al [2], Daryan et al [12], Azizinamini [13], Saedi [14], Saedi and Yahyai [15], Mao et al [16], Garlock and Selamet [17][18][19] and Pakala et al [4,20]. These studies developed models for connections, using finite element computer programs such as ANSYS or ABAQUS, and studied the effect of connection flexibility, moment-rotation-stiffness characteristics, moment continuity, catenary tension forces and fire insulation on the fire behavior of connections.…”

Section: Introductionmentioning

confidence: 99%

Effect of concrete slab on the behavior of fire exposed subframe assemblies with bolted double angle connections

Pakala

Kodur

2016

Engineering Structures

View full text Add to dashboard Cite

This paper presents the development of a three-dimensional nonlinear finite element model for evaluating the system-level transient fire response of double angle connections that are part of a sub framed assembly. The behavior of two subframe assemblies, with double angle connections, exposed to different fire scenarios were modeled using a commercially available finite element software ANSYS. The finite element model accounts for material and geometrical nonlinearities, degradation of constitutive material properties with temperature and non-linear contact interactions. The model is validated by comparing predicted thermal and structural response parameters of connection assemblies with measured data from fire tests on subframe assemblies with and without the concrete slab. The validated model is applied to study the effect of decay rate, loading type, presence of the concrete slab and degree of axial restraint on the fire performance of double angle connection assemblies. Results from the parametric studies indicate that decay rate, loading type and axial restraint have significant influence on the transient fire performance of subframe assembly. Further, presence of the concrete slab significantly enhances the rigidity of the connection assembly and mitigates local instabilities, such as local and lateral torsional buckling, that arise in beams and this improves the performance of connections.

show abstract

“…The RBS zone is vulnerable to tensile fracture at high temperature, as indicated in existing fire tests [12][13][14] on isolated RBS joints. Moreover, the location of the cut section and the depth of circular cutting will affect the behaviour of a beam in fire.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of restrained steel beam with reduced beam section exposed to fire

Guo

Huang

2016

Journal of Constructional Steel Research

View full text Add to dashboard Cite

Reduced beam section (RBS) is one of the connection types, which is economical and popular for use in steel moment frames in seismic regions. By cutting some portions of the beam flanges near the column face, the RBS connections are designed to form plastic hinge within the RBS zone so that it could enhance the structural seismic performance. However, the steel beams with RBS connections have to provide robustness when exposed to fire. Although the responses of ordinary steel beams to elevated temperatures have been investigated over the last few decades, there has been very limited research on the behaviour of steel beams, with RBS connections in fire. This study includes a series of numerical analysis, to investigate the high-temperature performance of steel beams with RBS connections, compared to the responses of ordinary steel beams to fire. Various parameters have been considered, including the types of fire curves, the levels of beam-end restraints and the cutting profiles of the RBS connections. Overall, the deformation shape of RBS beams at high temperature is similar to that of ordinary steel beams, whereas the RBS beams could have longer period of fire resistance. The cut section actually provides both rotational and axial ductility/deformability to the connection, enhancing its fire resistance. Moreover, the cutting length, proposed by EC8, is also adequate for fire design. The minimum distance, between the RBS zone and the beam-end, proposed by FEMA-350 has been shown sufficient.

show abstract

Robust fire design of single plate shear connections

Cited by 39 publications

References 12 publications

Çelik-Beton Kompozit Kat Döşemesi Yangın Dayanım Deneyi

Çelik-Beton Kompozit Kat Döşemesi Yangın Dayanım Deneyi

Effect of concrete slab on the behavior of fire exposed subframe assemblies with bolted double angle connections

Behaviour of restrained steel beam with reduced beam section exposed to fire

Contact Info

Product

Resources

About