木材科学与技术2024，Vol.38Issue(5)：57-67,11.DOI:10.12326/j.2096-9694.2024086
结构用共挤木塑复合材承压性能研究
Bearing Performance of Co-Extruded Wood-Plastic Composites for Structural Application
摘要
Abstract
Structural co-extruded wood-plastic composites(Co-WPC)were prepared using PVC-based wood-plastic composites and acrylonitrile-styrene copolymer(AS)engineering plastics as raw materials,made through a co-extrusion molding process.To promote the application of Co-WPC in the field of reticulated shell structures,bearing tests under full bolt-hole loading were conducted on the Co-WPC,with bolt diameter and loading direction as variables.The bearing model was analyzed using finite element analysis.The results showed that as the bolt diameter increased,the bearing strength decreased.It reached a minimum value of 39.0 MPa at a bolt diameter of 10 mm.For the same bolt diameter,the bearing strength of specimens loaded perpendicular to the extrusion direction was greater than that of those loaded parallel to the extrusion direction.The relative error between the simulated and experimental bearing strengths is controlled within 15％.The simulated load-displacement curves correlated well with the experimental curves.Based on current wood design standards from various countries and the experimental data,a formula for calculating the bearing strength of Co-WPC was proposed.The formula accurately predicted the bearing strength,with a relative error within 10％.关键词
结构用木塑复合材料/承压强度/孔周材性调整/有限元分析Key words
structural wood-plastic composite/bearing strength/material property adjustment near the hole/finite element analysis分类
建筑与水利引用本文复制引用
李俞谕,侯剑山,何文辉,程少杰,杨俊成,欧荣贤,丛沛桐..结构用共挤木塑复合材承压性能研究[J].木材科学与技术,2024,38(5):57-67,11.基金项目
广东省重点领域研发计划项目"再生低碳生态建筑材料研究与部品开发"(2020B0202010008) （2020B0202010008）
广东省林业局林业科研重点项目"装配式竹塑复合结构关键技术及其应用"(2024KJQT001). （2024KJQT001）
