Akademik Veri Yönetim Sistemi
Mechanics of Advanced Materials and Structures, cilt.33, sa.1, 2026 (SCI-Expanded, Scopus)
Building large-scale structural systems using engineered wooden components rather than solid wood has become possible. Wood has become more frequently used in structural systems in recent years. In recent years, it has become more common to use Cross Laminated Timber (CLT) panels made from laminated wooden components. Using shear wall components made from CLT panels has begun to gain popularity over panel wall systems made of common solid wood components. In standard-produced flooring systems, beams are covered with panels. Flooring systems can be manufactured using only CLT panels with less labor and material. CLT panel systems have become increasingly common in the last ten years. The advantages of these panels have allowed for the production of bigger, multi-story timber constructions. One-way floor elements composed of CLT panels were evaluated under a load of four-point bending to examine failure mechanisms, load-displacement behaviors, initial stiffness, displacement ductility ratios, and energy consumption capacities. The study aimed to determine the effects of several factors on the production of CLT panels, including the lamella angle, the type of wood, and the effect of thermal treatment on the wood. The effects of these variables on the bending behavior and overall performance of CLT panels were investigated. As a result of the study, the heat-treated CLT panel, manufactured from ash wood and with the middle layer positioned at a 45-degree angle to the outer layers, exhibited the best flexural behavior. In CLT panels, the ultimate load capacity, initial stiffness, energy dissipation capacity, and maximum strain measured from the tensile surface of the specimens with a 45° mid-layer angle were 56%, 35%, 90%, and 65% higher, respectively, than those with a 90° angle. The ultimate load capacity, initial stiffness, displacement ductility ratios, energy dissipation capacity, and maximum strain values of CLT panel specimens produced using ash wood were obtained to be 16%, 12%, 111%, 83%, and 16% higher, respectively, than those produced using yellow pine wood. ThermoWood heat-treated CLT panels exhibited ultimate load capacity, initial stiffness, displacement ductility ratios, energy dissipation capacities, and maximum strain values that were 84%, 190%, 225%, 109%, and 50% higher, respectively, than untreated CLT panels. Furthermore, ABAQUS finite element software was used to do numerical analyses on the CLT panel specimens that were put to the test as part of the study. The results obtained from the numerical analysis were compared with the experimental results, and it was evaluated to what extent the finite element models could model the behavior of CLT panels under the effect of bending load. When the results obtained from the numerical analysis study were examined, it was observed that the ultimate load capacity values of one-way unidirectional CLT panels were calculated successfully and in significant agreement with the experimental results. The average difference between the ultimate load capacity values obtained from the numerical analyses and the experimental results was calculated as 9%.