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김지용 ( Ji-yong Kim ),임형석 ( Hyungsuk Lim ),안경선 ( Kyung-sun Ahn ),방성준 ( Sung-jun Pang ),김민정 ( Min-jeong Kim ),심국보 ( Kugbo Shim ),김건호 ( Keon-ho Kim ),김철기 ( Chul-ki Kim ),오정권 ( Jung-kwon Oh ) 한국목재공학회 2021 한국목재공학회 학술발표논문집 Vol.2021 No.2
With increasing demands for high-rise timber buildings, Cross Laminated Timber (CLT) is widely used for various structural elements. Due to the complexity in structure, tall timber buildings are extremely difficult to design by hand. Therefore, computer-based structural design is required, and in-plane shear modulus for CLT is necessary as an input. However, any test standards are not providing even method for measurement of in-plane shear modulus on CLT or other massive wood panels. In this study, a method using picture frame is proposed for measuring in-plane shear modulus. A 20mm thick acrylic sheet was also tested to determine the range of pure shear, using digital image correlation (DIC) technique. Prior to CLT test, load is transferred to the acrylic panel through dowels. Displacements were measured in both directions (active and passive), and both sides (front and back). With measured displacements and loads, in-plane shear modulus was calculated. It was found that the picture frame test method is appropriate for the stiff massive wood panel.