Structural Behaviour of Precast Lightweight Foamed Concrete Sandwich Panel (PLFP) with Double Shear Truss Connectors under Eccentric Load: Preliminary Result

Ahmad, Ismail Nasiruddin; Goh, Wan Inn; Samsuddin, S.; Mohamad, Noridah; Rahman, Mohammad Saidur; Samad, Abdul

doi:10.4028/www.scientific.net/amr.795.414

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Usage of steel based shear connectors either in discrete or continuous truss form is the most common and also commercially available. The steel shear connectors were used in the form of wires, bent bars, ties, C-clip, steel plate, Z shaped and truss connectors (Ahmad et al, 2013;Amin Eniea et al, 1991;Benayoune et al, 2008;Bush and Stine, 1994;Gara et al, 2012;Kinnane et al, 2020;Lee and Pessiki, 2008;Naito et al, 2012;Yuksel et al, 2020). Non-metallic shear connectors were used by researchers with the view of increasing the thermal efficiency as the metal connectors will conduct heat (Einea et al, 1994;Frankl et al, 2011;Henin et al, 2014;Hopkins et al, 2017;Jiang et al, 2018;Salmon et al, 1997;Tomlinson and Fam, 2015).…”

Section: Introductionmentioning

confidence: 99%

Behaviour of concrete composite slabs with truss type shear connectors of different orientation angle

Kanchanadevi

Ramanjaneyulu

Srinivas

2021

Advances in Structural Engineering

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Concrete composite slab system with pre-cast bottom segment and cast-in-situ top segment is gaining importance due to wide-ranging applications in buildings, bridges and industrial flooring, etc. These slabs may also be subjected to repeated loading during its service life and hence, it is essential to evaluate their static and fatigue behaviour under flexural loading. In present study, at first, experimental investigations are conducted to evaluate the performance of composite slabs with truss type shear connectors with two orientation angles, namely, 45° and 60°. The composite slab specimens are subjected to four-point bending. The load-versus-displacement responses obtained for the composite slabs are compared with that of control full slab. It is observed that the composite slab with 45° shear connector showed better performance when compared to composite slab with 60° shear connector in terms of load-displacement response, rotation, ductility and energy absorption and also found to be efficient in terms of area of steel crossing the interface. Further, numerical investigations are also carried out to assess load transfer mechanism of truss type shear connectors at different significant events. The force flow mechanism of truss type shear connectors is brought out clearly. From the numerical investigations on composite slabs with different orientation angles, it is observed that composite slab with 45° shear connector exhibited superior performance over other orientation angles in terms of better force flow mechanism and lesser area of steel crossing the interface. Further, fatigue performance of composite slab with 45° shear connector is evaluated and compared with the fatigue performance of control slab. It could be observed that the composite slab with 45° truss type shear connector showed better fatigue performance when compared to the control slab.

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Section: Introductionmentioning

confidence: 99%

Behaviour of concrete composite slabs with truss type shear connectors of different orientation angle

Kanchanadevi

Ramanjaneyulu

Srinivas

2021

Advances in Structural Engineering

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“…These studies focus on the compression load (axial and eccentric) [5,6,[8][9][10][11], flexural load [12][13][14][15][16][17][18][19], and dynamic load [20,21] of these components, and they provide evidence of the key role of connectors in both structural and thermal performances [22].…”

Section: Introductionmentioning

confidence: 99%

A More Sustainable Way for Producing RC Sandwich Panels On-Site and in Developing Countries

et al. 2017

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Abstract:The purpose of this work is to assess if traditionally used welded connectors for joining the two skins of reinforced concrete (RC) sandwich panels, used as structural walls and horizontal structural elements, can be substituted with bent ones. In this way, the scope of the effort is to reduce drastically the energy required during manufacturing, thus having a much more sustainable building product. Wire mesh on site production, in fact, requires a large amount of energy for the welding process, as stated by several Environmental Product Declaration (EPD). In addition, the production of sandwich panels with bent connectors requires a low level of automation and no qualified labor allowing the diffusion in developing countries. The procedures used to execute the work were both experimental and numerical. Structural performances were examined by testing full-scale sandwich panels under (axial and eccentric) compression and flexural loads. Additionally, a Finite Element (FE) study was developed to investigate and to optimize the dimension of welded mesh and the number of connectors. The major findings show that it is possible to substitute welded connectors with bent ones without compromising the structural performance of the tested RC sandwich panels, thus having a more sustainable way for producing these last ones.

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Study on Seismic Performance of Steel Frame Installed New-Type Lightweight Concrete Composite Exterior Wallboard

Wang,

Sun,

Hou

et al. 2024

Buildings

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Given the widespread use of lightweight composite wall panels in building structures, it is crucial to comprehend their seismic performance. This paper proposes a new lightweight concrete composite exterior wallboard (LCEW) featuring truss-type thermal barrier connectors (TBCs). Through the proposed static test, the damage morphology and hysteresis curve of the specimen are obtained; the hysteresis characteristics, skeleton curve, stiffness degradation, etc., are investigated; and the damage modes are summarized. The results demonstrate that the steel frame structure can effectively adapt to the use of LCEW, resulting in an approximately 20% increase in the frame structure’s bearing capacity. Second, the wall panels with a uniform transverse arrangement of TBCs could not perform as well, as they could only delay the crack opening. To give full play to its effect, it should be combined with the direction of the main tensile zone of the wall panels. Meanwhile, the sliding gusset connections effectively released the frame action at the system level.

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Structural Behaviour of Precast Lightweight Foamed Concrete Sandwich Panel (PLFP) with Double Shear Truss Connectors under Eccentric Load: Preliminary Result

Cited by 3 publications

References 2 publications

Behaviour of concrete composite slabs with truss type shear connectors of different orientation angle

Behaviour of concrete composite slabs with truss type shear connectors of different orientation angle

A More Sustainable Way for Producing RC Sandwich Panels On-Site and in Developing Countries

Study on Seismic Performance of Steel Frame Installed New-Type Lightweight Concrete Composite Exterior Wallboard

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