Abstract
Conventional cross-laminated timber is an engineered wood product consisting of solid-sawn lumber panels glued together. In this study, the structural behavior of solid wood panels of Nail-Cross-Laminated Timber (NCLT) panels connected with nails instead of glue was studied. The failure mode and nail deformation of the novel NCLT panels under axial compression load using eight full-scale NCLT panels was investigated. The effects of four key design parameters, namely, the nail type, number of nails, nail orientation angle, and nail slenderness ratio on axial compression performance of NCLT panels were also analyzed. In addition, a formula for predicting the axial compression bearing capacity of NCLT panels was developed. For calculation of the slenderness ratio, the moment of inertia of the full section or the effective section was determined based on the nail type, number of nails, angle of nail orientation and number of layers of the plate. Results showed that specimens connected by tapping screws had best compressive performance.
Highlights
In the 1970s, the concept of cross-laminated timber (CLT) was first proposed in Europe [1]
The results showed that the bending performance of the Nail-laminated timber (NLT) panels made of two species of the eucalypt surpassed those of commercial NLT products in the previous literature
A total of 8 full-scale Nail-Cross-Laminated Timber (NCLT) panels were designed for axial compression testing
Summary
In the 1970s, the concept of cross-laminated timber (CLT) was first proposed in Europe [1]. CLT, commonly known as glulam, is a wood-panel product made by gluing layers of solid-sawn timber together. CLT panels have various advantages, including excellent mechanical properties [3], sound insulation [4], energy-saving potential [5], fire resistance [6,7], high durability [8], and construction convenience, owing to prefabrication [9]. Substantial research on CLT panels has been conducted, significantly promoting the development of glued wood structures [11]. Conducted an experimental study in 2010 on the anchor connection between two adjacent CLT wall panels. Their results showed that the arrangement of the joints and the depth of the nail threads directly affected the deformation of the entire test specimens. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
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