Structural performance, and failure mechanism, of hardwood cross laminated timber concrete composite under shear load

Khokhar, Aamir; Bell, David; Dhonju, Roshan

Abstract

The performance of Timber Concrete Composite(s) (TCC) is primarily governed by the type of connection used in connecting the constituent members together. This paper investigates the performance of various commonly used connections in a TCC. The main goal of this research is to identify which type of connection provides the optimal structural performance while also identifying the effects parameters such as inclination angle and penetration/notch depth have on the performance of connections. Shear tests on 40 hardwood CLT Concrete Composite specimens comprising of 5 connection configurations, utilising notched and screw connections were undertaken in accordance to BS EN 26891. The results showed that notched connections provided the most satisfactory structural performance in relation to load carrying capacity and stiffness, with the depth of the notch having a significant impact on the behaviour of the composite under load. In terms of timber screw connections, screws inclined at 45° yielded the best structural performance in relation to load carrying capacity and stiffness.

Citation

Khokhar, A., Bell, D., & Dhonju, R. (2023, June). Structural performance, and failure mechanism, of hardwood cross laminated timber concrete composite under shear load. Presented at World Conference on Timber Engineering 2023 (WCTE2023), Oslo, Norway

• Presentation Conference Type: Conference Paper (published)
• Conference Name: World Conference on Timber Engineering 2023 (WCTE2023)
• Start Date: Jun 19, 2023
• End Date: Jun 22, 2023
• Publication Date: 2023
• Deposit Date: Jun 6, 2024
• Peer Reviewed: Peer Reviewed
• Pages: 41-50
• Book Title: World Conference on Timber Engineering (WCTE 2023)
• ISBN: 9781713873297; 9781713873273
• DOI: https://doi.org/10.52202/069179
• Keywords: Hardwood, Cross laminated timber, Push-out test, Shear connectors, Slip modulus, Failure modes