Experimental Verification of Design Procedure for Elements from Cross-laminated Timber

Buka-Vaivade, Karina; Serdjuks, Dmitrijs; Goremikins, Vadims; Vilguts, Aivars; Pakrastiņš, Leonīds

doi:10.1016/j.proeng.2017.02.142

Cited by 20 publications

(9 citation statements)

References 7 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%

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%

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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“…The shear deformation is also dismissed because of the considerable panel length to height ratio (about 30). The cross-layers of the CLT panel are evaluated in the calculations by transforming them to the material properties of the longitudinal layers according to the transformed-section method [32].…”

Section: Methodsmentioning

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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“…For a concise evaluation of different analytical and numerical methods typically applied in practice-such as the so-called γ-method of EN 1995-1-1:2016 [18]-the reader is referred to Bogensperger et al [19]. A comparison between test results and some of the typically applied calculation methods for CLT is provided in Buka-Vaivade et al [20].…”

Section: Particularities Of Cross Laminated Platesmentioning

confidence: 99%

Cross-Laminated Timber: A Survey on Design Methods and Concepts in Practice

2022

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Cross laminated timber (CLT) is becoming increasingly popular in timber construction due to its versatility. However, its structural anistropy requires the application of particular concepts and design methods. The article on hand presents the results of a worldwide survey conducted among engineers working with this product. Thus, it presents the current state of knowledge and practice on CLT construction: an overview of the experience of engineers working with CLT design, the commonly used verification methods, and the implementation of the material properties and different required assumptions in the software. An outlook to design problems in complex design situations relevant for multi-storey buildings and potential research fields is indicated additionally. The general picture is quite heterogeneous, with little consensus on the assumptions, design methods or applied tools. A wide repertoire of different approaches based on a large range of literature is found in practice. This is in part the result of the current lack of standardisation and currently incomplete regulations. Future efforts should focus on these two aspects to increase the applicability of CLT globally and strengthen its competitiveness.

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Experimental Verification of Design Procedure for Elements from Cross-laminated Timber

Cited by 20 publications

References 7 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

Cross-Laminated Timber: A Survey on Design Methods and Concepts in Practice

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