Application of bolted connections in fibre-reinforced polymers

Oppe, Matthias; Knippers, Jan

doi:10.1680/stbu.2011.164.5.321

Cited by 5 publications

(5 citation statements)

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“…These panels offer various advantages, such as high strength and stiffness to weight ratio, immunity to corrosion, and a low thermal and acoustic conductivity [9][10][11][12][13] . Likewise, pultruded GFRP profiles show a series of promising advantages, such as relatively low production costs, low maintenance, high durability, immunity to corrosion and high strength [14][15][16][17] . Accordingly, sandwich panels have been efficiently used in several structural applications, such as cladding 18 , facades 19,20 , roofing 21,22 and walls 23,24 .…”

Section: Introductionmentioning

confidence: 99%

Composite modular floor prototype for emergency housing applications: Experimental and analytical approach

Abdolpour

Garzón-Roca²,

Escusa

et al. 2017

Journal of Composite Materials

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The present paper explores a new modular floor prototype to be used in emergency houses. The prototype is composed of a frame structure made of glass-fiber-reinforced polymer (GFRP) tubular pultruded profiles, a slab made of sandwich panels with a polyurethane (PU) foam core and GFRP skins, and a tailored connection system that provides integrity between assembled components. A series of experimental tests are carried out including flexural tests on a single panel, on two and three connected panels, and on the assembled floor prototype. The behaviour of the panels is analysed when they are not considered part of the GFRP framed structure, namely the failure mechanisms and the efficiency of the proposed connection system between the panels. The performance of the floor prototype to support typical load conditions of residential houses is also assessed. Additionally, an analytical model was used to deeper study the behavior of the developed sandwich panels, connection system and the modular floor prototype.

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Section: Introductionmentioning

confidence: 99%

Composite modular floor prototype for emergency housing applications: Experimental and analytical approach

Abdolpour

Garzón-Roca²,

Escusa

et al. 2017

Journal of Composite Materials

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“…The composite solution herein proposed uses GFRP profiles and sandwich panels and fits very well into this trend, as it is capable of being prefabricated, transported to the disaster area and easily assembled. Likewise, pultruded GFRP composite profiles show a series of promising advantages such as low production costs, low maintenance, high durability and immunity to corrosion and high strength [11][12][13][14]. Recently, sandwich panels have been increasingly used in structural applications due to some main features such as its high strength and stiffness to weight ratio, its immunity to corrosion, and a low thermal and acoustic conductivity [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Development of a composite prototype with GFRP profiles and sandwich panels used as a floor module of an emergency house

Abdolpour

Garzón-Roca²,

Escusa

et al. 2016

Composite Structures

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ElsevierAbdolpour, H.; Garzón-Roca, J.; Escusa, G.; Sena-Cruz, JM.; Barros, JA.; Valente, IB. (2016). Development of a composite prototype with GFRP profiles and sandwich panels used as a floor module of an emergency house. Composite Structures. 153:81-95. AbstractA series of experimental tests carried out on a composite prototype to be used as a floor module of an emergency house is presented in this paper. The prototype comprises a frame structure formed by GFRP pultruded profiles, and two sandwich panels constituted by GFRP skins and a polyurethane foam core that configures the floor slab.The present work is part of the project ''ClickHouse -Development of a prefabricated emergency house prototype made of composites materials" and investigates the feasibility of the assemblage process of the prototype and performance to support load conditions typical of residential houses. Furthermore, sandwich panels are also independently tested, analysing their flexural response, failure mechanisms and creep behaviour. Obtained results confirm the good performance of the prototype to be used as floor module of an emergency housing, with a good mechanical behaviour and the capacity of being transported to the disaster areas in the form of various low weight segments, and rapidly installed. Additionally, finite element simulations were carried out to assess the stress distributions in the prototype components and to evaluate the global behaviour and load transfer mechanism of the connections.

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“…Bolted, adhesive bonded, or combined bolted and bonded joints have been proposed as connections for FRP profiles. In bolted joints, steel bolts are commonly used and the contributions of Mottram and Zafari (2011), Turvey (2011a) and Oppe and Knippers (2011) investigate the mechanics of this type of connection detail. Adhesive bonded splice joints are then the subject of a further paper by Turvey (2011b).…”

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confidence: 99%

“…The behaviour of bolts subjected to tension is also addressed by Oppe and Knippers (2011) who present experimental results relating to a single steel bolt pulled through an FRP plate, as well as tests on flanged FRP profiles where the lower flange is secured and the tensile load is introduced through bolts in the upper flange. The latter case was based on a typical beam-column connection.…”

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confidence: 99%

Editorial

Lees¹,

Stratford²

2011

Proceedings of the Institution of Civil Engineers - Structures

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The first four papers in this themed issue are drawn from contributions presented at the fourth biennial Advanced Composites in Construction (ACIC) conference, held in Edinburgh in 2009. A wide range of sessions encompassed many exciting construction application areas including the use of fibrereinforced polymers (FRPs) as internal reinforcement for concrete, FRP stay-in-place formwork and sandwich panels, allcomposite structures built with FRP profiles, and the FRP strengthening of concrete, steel masonry or timber structures. Important aspects of the business case for the use of advanced composites were also discussed and case studies of structures in service provided the opportunity for users to share their experience. These studies were complemented with the presentation of research investigations to address some of the challenges associated with FRPs, such as the durability under environmental conditions, the performance in fire and elevated temperatures, and FRP to FRP connections.For all-composite structures, the connection details are a source of local stress concentrations which can lead to premature failures. Bolted, adhesive bonded, or combined bolted and bonded joints have been proposed as connections for FRP profiles. In bolted joints, steel bolts are commonly used and the contributions of Mottram and Zafari (2011), Turvey (2011a) and Oppe and Knippers (2011) investigate the mechanics of this type of connection detail. Adhesive bonded splice joints are then the subject of a further paper by Turvey (2011b).Shear is an important load transfer mechanism in FRP to FRP joints and the paper by Mottram and Zafari (2011) presents a new test method to help predict the bearing resistance of an FRP connection with steel bolts. This failure mode is of particular interest since bearing can provide some damage tolerance and hence is favoured. To calculate the bearing failure load, design codes require an FRP material parameter known as the pinbearing strength. However, existing test methods to ascertain pin-bearing strengths show wide variations in approaches and definitions of failure. To address this, the authors propose a new test method where a cylindrical steel pin is compressed into a circular notch in an FRP plate aligned vertically. New results for the pin-bearing strengths associated with loading in different orientations relative to the pultrusion direction, and the effect of the ratio of the pin diameter to plate thickness are reported.In Turvey (2011a), the main focus is the condition where bolts are loaded in tension, such as in FRP column-base joints. To model these effects, a comprehensive experimental programme was undertaken where a single steel bolt was pulled through a pultruded FRP plate. The bolt diameter, plate end support conditions (clamped or free) and plate dimensions were varied, and the influence of these variables on the transverse stiffness, damage loads, ultimate failure loads and failure patterns was then highlighted. In general, it was found that the transverse stiffness, the dam...

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Application of bolted connections in fibre-reinforced polymers

Cited by 5 publications

References 1 publication

Composite modular floor prototype for emergency housing applications: Experimental and analytical approach

Composite modular floor prototype for emergency housing applications: Experimental and analytical approach

Development of a composite prototype with GFRP profiles and sandwich panels used as a floor module of an emergency house

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