Investigation of Shear Performance of Light Frame Wall Sheathed with Structural Particleboard
国际木文化学会 | 152 view(s) | 2022/06/27
Korean wooden construction market has continued to grow, and the number of constructions has been kept steadily 10,000 houses per year since 2011. However, light-frame construction, of which members are imported material, has been built mostly. Therefore, the National Institute of Forest Science develops a structural particleboard (PB), which is made of domestic wood to substitute for imported OSB used as a structural sheathing plate in light-frame construction. To investigate whether structural PB could be used as sheathing material of light-frame wall or not, shear resistance of light-frame wall sheathed with structural PB compared with that of light-frame wall sheathed with OSB. Two light-frame walls having 2.44 (length)x2.44 (height) m per each sheathing plate were prepared. The 2x6 SPF lumbers with grade of 2 were used for frame, and the stud spacing was set to 610 mm. Sheathing plates were installed for each frame by driving 8d nails into the inside and the outer of plate at intervals of 300 and 150 mm, 58 respectively. Shear resistance was evaluated using hysteresis curve by applying a quasi-static load (ISO 16670 protocol) according to ASTM E2126. Shear strengths of wall sheathed with OSB and PB were 7.9 and 8.6 kN/m, respectively. It was confirmed that secant shear modulus for OSB and PB walls at 40% of the maximum load was 2.4 and 3.0 kN/m, respectively. In addition, ductility was shown as 8.4 and 9.5 in OSB and PB walls, respectively. It was confirmed that shear resistance of PB wall was higher than that of OSB wall. From the results in this study, it is considered that structural PB manufactured using domestic wood can be used for sheathing material of light-frame construction, and it is expected that it can contribute to the national carbon stocks.