文献类型：期刊文献

英文题名：Structure Effects on Mechanical Properties of a Novel Engineered Wood Product: Cross-Laminated-Thick Veneers Based on Infinite Splicing Technology

作者：Yang, Yuxin[1] Hu, Juan[1,2] Ning, Xinguang[3] Zhang, Yahui[1] He, Yingqi[1] Gong, Yingchun[1] Yu, Wenji[1] Huang, Yuxiang[1]

第一作者：Yang, Yuxin

通信作者：Zhang, YH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, Beijing 100083, Peoples R China;[3]Penglai Zhengtai Wood Ind Co Ltd, Yantai 265600, Peoples R China

年份：2025

卷号：16

期号：1

外文期刊名：FORESTS

收录：;EI(收录号：20250417764653);Scopus(收录号：2-s2.0-85215934752);WOS:【SCI-EXPANDED(收录号:WOS:001404077300001)】；

基金：This research was funded by and the Fourth Batch of Forestry and Grassland Science and Technology Innovation Outstanding Young Talent Project, grant number 2024132019, and the Technology-based Small and Medium Enterprises (SMEs) Innovation Capacity Enhancement Project of Shandong Province, grant number 2023TSGC0821.

语种：英文

外文关键词：engineered wood product; super-thick wood veneer; alternative low-carbon building materials; cross-laminated-thick veneers; groove and tenon splicing technology; bending properties; compressive strength

摘要：With increasing global concern over carbon emissions in the construction industry, cross-laminated-thick veneer (CLTV) has emerged as an innovative green building material with significant potential to promote the achievement of "dual-carbon" goals. This study developed a groove and tenon splicing technique for thick veneers, enabling infinite splicing of the length direction and the preparation of a large-size CLTV measuring 12 m (length) x 3.25 m (width) x 105 mm (thickness). The mechanical properties of CLTV were studied in relation to splice position, assembly pattern of grain directions, and layer combinations. The results showed that increasing the number of // layers (// or perpendicular to indicates grain direction of layer parallel or perpendicular to the length direction of CLTV) and using high-level layers significantly improved the compressive strength and reduced the coefficient of variation of CLTV. In terms of bending properties, reasonable splice distribution, placing // layers away from the neutral axis, and elevating layer level dramatically enhanced CLTV performance. Furthermore, the study revealed the synergistic effect among these design elements. The effects of layer level and the number of // layers on mechanical properties varied depending on splice arrangement and assembly pattern of grain directions, highlighting the importance of efficient structural design and raw material selection. This study addresses the limitations of traditional cross-laminated timber in raw material selection and production efficiency. Through structural innovation, it offers a solution for physical design and performance regulation, enabling the application of larger CLTV in wood structures and presenting new ideas for using fast-growing wood to reduce construction emissions.