Behavior of timber-concrete composite with defects in adhesive connection

Buka-Vaivade, Karina; Serdjuks, Dmitrijs

doi:10.1016/j.prostr.2022.01.123

Cited by 9 publications

(6 citation statements)

References 8 publications

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“…A simplified method for designing timber-concrete composite roof and floor structures with posi-joists was derived based on the transformed section method and the γ-method outlined in Annex B of EN1995-1-1 for mechanically jointed beams [33][34][35], which showed promising results in the case of timber-concrete composite structures with cross-laminated timber panel [20]. To validate the developed design method, timber-concrete composite specimens (see Figure 1a) were prepared for laboratory testing.…”

Section: Design Methods For Timber-concrete Composite Structure With ...mentioning

confidence: 99%

“…Choice of structural solution: Selection of major geometric parameters, including the bay of the posi-joisted beams, depth of the beam cross-sections, thickness of the OSB decking, and thickness of the concrete layer. Recommendations from the existing literature [20,30] can guide this stage.…”

Section: Design Methods For Timber-concrete Composite Structure With ...mentioning

confidence: 99%

“…In recent decades, timber-concrete composite (TCC) structures have gained prominence, especially in the construction of multi-storey timber buildings [19,20]. TCC structures contribute to creating rigid or semi-rigid joints, with connectors playing a crucial role in transferring shear between concrete slabs and timber beams [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists

Rogainis,

Serdjuks,

Buka-Vaivade

et al. 2024

Applied Sciences

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This study presents a comprehensive analysis of a simplified design methodology for timber–concrete composite roof and floor structures employing metal web beams, also known as posi-joisted beams, easi-joist, or open web joists, validated through both laboratory experiments and finite element (FE) method analyses. The proposed method integrates the transformed section method and the γ-method, as outlined in Annex B of EN1995-1-1 for mechanically jointed beams. The investigation focuses on roof and floor structures featuring posi-joisted beams, oriented strand board (OSB) sheets connected by screws, and a layer of concrete bonded to the OSB sheets using epoxy glue and granite chips. Two groups, each consisting of four specimens, were prepared for the laboratory experiments. Each specimen comprised two posi-joisted beams, 1390 mm long, connected by OSB/3 boards measuring 400 mm in width and 18 mm in thickness. The beams had a cross-sectional depth of 253 mm, corresponding to beams of grade PS10, with top and bottom chords made from solid timber (95 mm × 65 mm). Bracing members with cross-sections of 100 mm × 45 mm were used to join the bottom chords of the beams. A layer of self-levelling mass SakretBAM, 50 mm thick, was bonded to the OSB/3 boards using SicaDur 31 epoxy glue and granite chips (16–32 mm). The specimens underwent three-point bending tests under static loads, and FE modelling, conducted using Ansys R2 2022 software, was employed for both experimental groups. A comparative analysis of results obtained from the simplified design method, FE simulations, and experimental data revealed that the simplified method accurately predicted maximum vertical displacements of the roof fragment, including posi-joisted beams, with precision up to 11.6% and 23.10% in the presence and absence of a concrete layer, respectively. The deviation between normal stresses in the chords of the beams obtained through the simplified method and FE modelling was found to be 7.69%. These findings demonstrate the effectiveness and reliability of the proposed design methodology for timber–concrete composite roofs with posi-joisted beams.

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Section: Design Methods For Timber-concrete Composite Structure With ...mentioning

confidence: 99%

Section: Design Methods For Timber-concrete Composite Structure With ...mentioning

confidence: 99%

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Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists

Rogainis,

Serdjuks,

Buka-Vaivade

et al. 2024

Applied Sciences

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“…As part of developing a more rational timber-concrete composite solution, an innovative technology producing a rigid connection between the concrete layer and the timber base has been proposed. The proposed production method includes gluing the chips to the timber layer (see Figure 1) and placing fresh concrete after drying the adhesive layer [17,18]. In reinforced concrete bending structures, the tensile strength of the concrete is usually neglected.…”

Section: Introductionmentioning

confidence: 99%

“…Figure3. The proposed production method of a rigid connection between timber and concrete layers[18].…”

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confidence: 99%

Cost Factor Analysis for Timber–Concrete Composite with a Lightweight Plywood Rib Floor Panel

2022

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With the growing importance of the principle of sustainability, there is an increasing interest in the use of timber–concrete composite for floors, especially for medium and large span buildings. Timber–concrete composite combines the better properties of both materials and reduces their disadvantages. The most common choice is to use a cross-laminated timber panel as a base for a timber–concrete composite. But a timber–concrete composite solution with plywood rib panels with an adhesive connection between the timber base and fibre reinforced concrete layer is offered as the more cost-effective constructive solution. An algorithm for determining the rational parameters of the panel cross-section has been developed. The software was written based on the proposed algorithm to compare timber–concrete composite panels with cross-laminated timber and plywood rib panel bases. The developed algorithm includes recommendations of forthcoming Eurocode 5 for timber–concrete composite design and an innovative approach to vibration calculations. The obtained data conclude that the proposed structural solution has up to 73% lower cost and up to 71% smaller self-weight. Thus, the proposed timber–concrete composite construction can meet the needs of society for cost-effective and sustainable innovative floor solutions.

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Effect of test configurations and loading protocols on performance of timber-concrete connectors

Ling

Rong

et al. 2023

Construction and Building Materials

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Behavior of timber-concrete composite with defects in adhesive connection

Cited by 9 publications

References 8 publications

Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists

Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists

Cost Factor Analysis for Timber–Concrete Composite with a Lightweight Plywood Rib Floor Panel

Effect of test configurations and loading protocols on performance of timber-concrete connectors

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