Effect of Glass Fiber-Reinforced Connection on the Horizontal Shear Strength of CLT Walls

Abstract

The connection performance between cross-laminated timber (CLT) walls and support has the greatest effect on the horizontal shear strength. In this study, the horizontal shear performance of CLT walls with reinforced connection systems was evaluated. The reinforcements of metal bracket connections in the CLT connection system was made by attaching glass fiber-based reinforcement to the connection zone of a CLT core lamina. Three types of glass fiber-based reinforcement were used: glass fiber sheet (GS), glass fiber cloth (GT) and fiber cloth plastic (GTS). The horizontal shear strength of the fabricated wall specimens was compared and evaluated through monotonic and cyclic tests. The test results showed that the resistance performance of the reinforced CLT walls to a horizontal load based on a monotonic test did not improve significantly. The residual and yield strengths under the cyclic loading test were 38 and 18% higher, respectively, while the ductility ratio was 38% higher than that of the unreinforced CLT wall. The glass fiber-based reinforcement of the CLT connection showed the possibility of improving the horizontal shear strength performance under a cyclic load, and presented the research direction for the application of real-scale CLT walls.

Evaluation of Adhesive Characteristics of Mixed Cross Laminated Timber (CLT) Using Yellow Popular and Softwood Structural Lumbers

“…Representative engineered woods include structural glued laminated timber (GLT) and cross laminated timber (CLT), which have the advantage of being dimensionally stable and easy to process, allowing them to be manufactured in a variety of shapes and sizes. Therefore, not only the physical properties of CLT and design values for utilization as a building material have been studied, but also the manufacturing of hybrid CLT with composite applications of various materials (Choi et al, 2020(Choi et al, , 2021Fujimoto et al, 2021;Gong et al, 2021;Jung et al, 2020;Lee et al, 2022;Song and Kim, 2023;Trisatya et al, 2023). In particular, CLT, a building structure, has high compressive and bending strengths and has accelerated the high-rise development of wooden buildings based on performance studies such as CLT joints developed mainly in Europe and North America (Ahn et al, 2021;Lee et al, 2022).…”

Lateral Resistance of Reinforced Light-Frame Wood Shear Walls

“…Yang et al (2021) investigated the research trends pertaining to hybrid CLT to enhance the rolling shear strength of CLT. Jung et al (2020) evaluated the effect of glass fiber-reinforced connection on the horizontal shear strength of CLT walls. Choi et al (2021) evaluated the flexural performance of CLT using the plywood bonding method of ply-lam CLT.…”

A Study on Floor Impact Sound Insulation Performance of Cross-Laminated Timber (CLT): Focused on Joint Types, Species and Thicknesses

“…Some studies have also delved into the thermal insulation performance of CLT (Pang et al, 2017) or the sound absorption coefficient and sound transmission loss of various timber materials (Jang, 2022a(Jang, , 2022b(Jang, , 2022c(Jang, , 2022dKang et al, 2019). However, the majority of studies on CLT in South Korea have focused on its production and mechanical performance, with only a few examining its floor impact sound insulation performance when used domestically as a floor material (Jang and Lee, 2019;Jung et al, 2020;Lee et al, 2022;Pang et al, 2021;Song and Kim, 2022). In contrast, some overseas studies on CLT have explored the sound insulation performance of CLP slabs.…”