ABSTRACT

This current research work was aimed to develop an innovative panel by combining the nail-laminated timber (NLT) and cross-laminated timber (CLT) into a single product named nail-cross-laminated timber (NCLT) to take advantage of both structural panel products in a single product as a structural member. To investigate the mechanical properties of the NCLT, its bending performance and rolling shear were examined and compared to those of conventional CLT and NLT floor panels. The NCLT and the CLT panels were fabricated in 3 layers such as the CLT. Polyurethane adhesive was used on the laminations. The cross layers of the NCLT were made of a 30-mm-thick vertically laminated NLT. The NLT floor panels were fabricated by vertically nailing the laminations using a zigzag nailing pattern. Results showed no significant differences in the bending strength properties of the three panel types. Both CLT and NCLT showed a comparable rolling shear strength, however, the rolling shear failure in the NCLT was much more ductile than that of the CLT. Overall, the NCLT panels indicated an appropriate short-term bending and rolling shear performances.

摘要

目前的研究工作旨在开发一种创新的面板，将钉子层压木材 (NLT) 和交叉层压木材 (CLT) 组合成一个名为钉交叉层压木材 (NCLT) 的单一产品，以利用这两种结构面板产品中的单个产品作为结构件。为了研究 NCLT 的机械性能，检查了其弯曲性能和滚动剪切力，并与传统的 CLT 和 NLT 地板面板进行了比较。NCLT 和 CLT 面板被制造成 3 层，例如 CLT。聚氨酯粘合剂用于层压。NCLT 的交叉层由 30 毫米厚的垂直层压 NLT 制成。NLT 地板是通过使用锯齿钉图案垂直钉入叠层来制造的。结果表明，三种面板类型的弯曲强度性能没有显着差异。CLT 和 NCLT 都显示出相当的滚动剪切强度，然而，NCLT 中的滚动剪切破坏比 CLT 的延展性大得多。总体而言，NCLT 面板显示出适当的短期弯曲和滚动剪切性能。