Experimental investigation on the long-term behaviour of prefabricated timber-concrete composite beams with steel plate connections

Shi, Benkai; Liu, Weiqing; Yang, Huifeng

doi:10.1016/j.conbuildmat.2020.120892

Cited by 34 publications

(13 citation statements)

References 38 publications

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“…Since neither for the CLT slab nor for the TCC slab comparable experimental investigations exist, validation of this hybrid modeling approach is not possible. Experimental investigations of TCC slabs in the literature focused on T-shaped beam elements, e.g., [6,7,29,49], or slabs made of other wood products, e.g., [8,30]. Long-term experiments on CLT slabs are rare in the literature.…”

Section: Discussionmentioning

confidence: 99%

Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions

2022

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Cross-laminated timber (CLT) slabs in residential buildings need additional weight, e.g., in the form of screeds or gravel layers, to fulfill the criterion for the highest impact-sound class. The additional mass is, however, not exploited for the load bearing behavior, but adds additional weight and leads to an increased height of the floor construction. In this study, such a CLT floor construction with a construction height of 380 mm is compared with a composite slab consisting of a CLT plate with a concrete layer on top with a floor construction height of 330 mm. The timber concrete composite (TCC) slab has a different creep behavior than the CLT slab. Thus, the development of the time-dependent deflections over the service life are of interest. A straightforward hybrid approach is developed, which exploits advanced multiscale-based material models for the individual composite layers and a standardized structural analysis method for the structural slab to model its linear creep behavior. The introduced approach allows to investigate load redistribution between the layers of the composite structure and the evolution of the deflection of the slab during the service life. The investigated slab types show a similar deflection after 50 years, while the development of the deflections over time are different. The CLT slab has a smaller overall stiffness at the beginning but a smaller decrease in stiffness over time than the investigated TCC slab.

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Section: Discussionmentioning

confidence: 99%

Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions

2022

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“…This theme focuses on the structural behavior of the structures, construction elements, and materials such as loads, collapse, strength, resistance, part-I, validation, beams, and steel. In the scope of composites, several investigations concentrate on the structural behavior of prefabricated timber-concrete composite elements with innovative connections [65,66].…”

Section: • Motor Themesmentioning

confidence: 99%

Bibliometric Review of Prefabricated and Modular Timber Construction from 1990 to 2023: Evolution, Trends, and Current Challenges

Gutiérrez,

Negrão,

Dias

et al. 2024

Sustainability

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Due to its inherent characteristics, such as a light weight and ease of workability, timber is ideal for prefabricated and modular construction. However, since the research in this field covers a wide range of niches such as structural engineering, building physics, design for assembly and disassembly, and life cycle analysis, among others, and since there has been considerable development of the field in past years—boosted by new mass timber products and tall timber construction—it is difficult to critically analyze the current state of the art, current trends, and research challenges. Therefore, this research aimed to cover a systematic review of 409 articles to assess the field of prefabricated and modular timber construction critically. The methodology comprised a co-word network approach using the Science Mapping Analysis Software Tool (SciMAT, Version 3) to illustrate their evolution from 1990 to 2023. The findings show that the circular economy and digital technologies significantly impact the development of these technologies, which can potentially provide practical solutions for designing buildings with a circular approach and improving productivity and efficiency in the construction process. However, it is essential to acknowledge a notable deficiency in the research and understanding of these subjects. Therefore, various sectors must take the lead in conducting a thorough reassessment to enhance research and development in the field. Finally, the findings from this research can significantly contribute to existing knowledge and serve as a comprehensive platform for the further exploration of prefabricated and modular timber construction.

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“…The bolts are modeled as cylindrical geometries, and a cohesive-sliding model is applied for the interface. ( 2) The second one is using solid elements for the bolts, where the root of the bolt is fixed to the steel beam and other parts of the bolt are embedded in the concrete slab [24]. After modeling and analysis using both approaches, it was found that the results were consistent in terms of the long-term behavior of the composite beams (e.g., deflection-time curve).…”

Section: Finite Element Modelmentioning

confidence: 99%

A Numerical Study on the Influence of Bolt Corrosion on the Long-Term Behavior of Steel–Concrete Composite Beams

Niu,

Qu,

Feng

2024

Advances in Civil Engineering

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This study establishes a numerical model for beam-type steel–concrete composite specimens considering the corrosion of anchor bolts, with which studies the long-term deformation performance of the components under sustained load. The experimental results were compared with the calculated values obtained by combining the effective modulus method according to the CEB-FIP 1990 code and the ACI 209R code. Then a comparison with the calculation method of shrinkage and creep in standards (Standard Creep Method (SCM)) is made, and it shows that by supplementing the degradation of interface stiffness due to corrosion (using the defined modulus method (DMM)), the simulation results match better with the experimental results, confirming that this approach is suitable for analyzing the long-term load conditions of anchor bolt corrosion. Furthermore, based on the defined modulus method, the long-term behavior of composite beams under different loads and varying corrosion rates is studied.

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Experimental investigation on the long-term behaviour of prefabricated timber-concrete composite beams with steel plate connections

Abstract: Graphical abstract

Cited by 34 publications

References 38 publications

Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions

Development of Creep Deformations during Service Life: A Comparison of CLT and TCC Floor Constructions

Bibliometric Review of Prefabricated and Modular Timber Construction from 1990 to 2023: Evolution, Trends, and Current Challenges

A Numerical Study on the Influence of Bolt Corrosion on the Long-Term Behavior of Steel–Concrete Composite Beams

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