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

Kanchanadevi, A.; Ramanjaneyulu, K.; Srinivas, V.

doi:10.1177/13694332211020406

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…Therefore, the cost of formwork can be minimized. Deng et al [9] synthesized other investigations [8,[10][11][12][13] and showed that the precast RC composite slab with inclined steel truss bars acquires beneficial features of both precast and RC slabs cast in situ, containing high construction efficiency and cost savings, high integrity, high reliability, and comparable mechanical behavior to that of popular slabs cast in situ. These studies also pointed out that the inclined steel truss bars have an insignificant impact on the load-carrying capacity but can greatly improve the ductility of the RC composite slab.…”

Section: Introductionmentioning

confidence: 99%

“…These studies also pointed out that the inclined steel truss bars have an insignificant impact on the load-carrying capacity but can greatly improve the ductility of the RC composite slab. The influences of different steel truss bars and innovative joint configurations on the flexural bending tests of composite slabs have been examined [11,13].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Flexural Behavior of RC–UHPC Slabs with EPS Lightweight Concrete Core

et al. 2023

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This paper presents an experimental investigation that focuses on the flexural behavior of an innovative reinforced concrete–ultra-high performance concrete slab with an expanded polystyrene lightweight concrete core. This type of slab is proposed to serve the semi-precast solution, in which the bottom layer is ultra-high performance concrete working as a formwork during the construction of semi-precast slab, the expanded polystyrene lightweight concrete layer is used for the reduction of structure self-weight, and the top layer is normal concrete designed to withstand compressive stress when the slab is loaded. Two similar large-scale specimens with dimensions of 6200 mm × 1000 mm × 210 mm were fabricated and tested under four-point bending conditions to investigate the flexural behavior of composite slab. Test results indicated that three different layers of materials can work effectively together without separation. The bottom ultra-high performance concrete layer leads to the high ductility of the slab and has a good effect in limiting the widening of the crack width by forming other cracks. According to design code ACI 544.4R, a modified distribution stress diagram on the composite section was proposed and proven to be suitable for the prediction of flexural strength of the composite section with an error of 3.4% compared to the experimental result. The effect of the ultra-high performance concrete layer on the flexural strength of the composite slab was clearly demonstrated, and for the case in this study, the ultra-high performance concrete layer improves the flexural strength of the slab by about 11.5%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on Flexural Behavior of RC–UHPC Slabs with EPS Lightweight Concrete Core

et al. 2023

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“…The shear keys can also be connected to temporary I-beams to increase the stiffness of the PBSs to realise support-free construction (Figure 2b). There are large bodies of systematic research on each [3][4][5][6][7][8][9][10][11]. Liu et al [12] confirmed the practicality of using STLSs by empirical testing; Ma et al [13] investigated its mechanical properties in construction and in service by testing and numerical modelling; Zhao et al [14] analysed the influence of parameters, such as concrete strength and truss height and diameter, on the mechanical properties of STLSs using ANSYS software; and Cheng [15] developed a short-term stiffness model for STLSs from theoretical analysis.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Mechanical Properties of a Bidirectional Laminated Slab with Shear Keys

Zhou²,

Qian³

et al. 2022

Coatings

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The load-bearing capacity of a bidirectional laminated slab with shear keys arranged in a rectangular grid (BCSWSK) was investigated to determine its mechanical properties, using load tests on a fabricated laminated slab and finite element models. The shear force distribution across the shear keys was measured and analysed, and the effects of different parameters were identified. The interfaces between the cast bottom slab and the shear keys were strongly bonded, as was the interface between the precast bottom slab and the cast-in-place upper slab, despite it being a secondary concrete pouring. The shear force was distributed similarly along the X direction (columns) and the Y direction (rows) of the shear key arrangement. The shear forces along the Y direction were greater and reached a maximum value sooner, but the differences between columns were mostly less than 10%. A square cross-section is recommended for the shear keys. The number of rows, number of columns, and the cross-sectional area of the shear keys are the main factors influencing the mechanical properties of the composite slab, but as they individually increased, they reached a point at which further increase had little effect. Similarly, after a certain number of shear keys were used, the concrete grade cast in situ, the shear key concrete grade, and the friction coefficient between the precast bottom slab and the cast-in-place upper slab had little influence on the BCSWSK.

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Investigation on the behaviour of concrete composite slab system with different levels of interface shear design

Kanchanadevi,

Ramanjaneyulu,

Gandhi

2024

Sādhanā

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

Cited by 9 publications

References 32 publications

Experimental Study on Flexural Behavior of RC–UHPC Slabs with EPS Lightweight Concrete Core

Experimental Study on Flexural Behavior of RC–UHPC Slabs with EPS Lightweight Concrete Core

Analysis of the Mechanical Properties of a Bidirectional Laminated Slab with Shear Keys

Investigation on the behaviour of concrete composite slab system with different levels of interface shear design

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