Compressive behavior of Australian radiata pine laminated veneer lumber

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Materials and Structures Pub Date : 2024-09-16 DOI:10.1617/s11527-024-02458-z

Minmin Li, Minjuan He, Zhirong Shen

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Abstract

Laminated veneer lumber (LVL) is a popular engineering wood commonly used in modern wood structures. Australian radiata pine, being one of the prominent fast-growing woods in Australia, exhibits substantial promise for advancement and application in structural LVL. To assess the feasibility of employing Australian radiata pine LVL (RP-LVL) in compression components like columns and walls, the compressive behavior of RP-LVL was experimentally studied. The modulus of elasticity and compressive strength of RP-LVL under different loading directions were determined. Besides, obvious cross-section influences on the compressive failure modes and compressive strength parallel to grain of RP-LVL were found. Variations in compressive failure modes were observed to correspond with distinct cross-sectional sizes in RP-LVL. Both the section depth effect parameter and section width effect parameter of RP-LVL were obtained for further strength analysis of RP-LVL compression components. Taking into account of the cross-section influences, a predictive model for the compressive strength parallel to the grain of RP-LVL was proposed. An excellent correlation between the test results and the predicted results were found, affirming the effectiveness of the proposed predictive method in accurately estimating the compressive strength parallel to the grain of RP-LVL. The results underscored that RP-LVL possessed competitive compressive properties could be provided a great potential for application in civil engineering as compression components.

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澳大利亚辐射松层压单板木材的抗压性能

层压单板板材（LVL）是现代木结构中常用的一种流行工程木材。澳大利亚辐射松是澳大利亚主要的速生木材之一，在结构性 LVL 的发展和应用方面前景广阔。为了评估将澳大利亚辐射松 LVL（RP-LVL）用于柱和墙等受压构件的可行性，我们对 RP-LVL 的受压行为进行了实验研究。实验测定了 RP-LVL 在不同加载方向下的弹性模量和抗压强度。此外，还发现横截面对 RP-LVL 的压缩破坏模式和平行于晶粒的压缩强度有明显影响。据观察，压缩破坏模式的变化与 RP-LVL 不同的截面尺寸相对应。获得了 RP-LVL 的截面深度效应参数和截面宽度效应参数，用于进一步分析 RP-LVL 压缩组件的强度。考虑到横截面的影响，提出了 RP-LVL 平行于晶粒的抗压强度预测模型。试验结果与预测结果之间存在良好的相关性，这证明了所提出的预测方法在准确估算 RP-LVL 平行于纹理的抗压强度方面的有效性。结果表明，RP-LVL 具有极佳的抗压性能，可作为抗压部件在土木工程中发挥巨大的应用潜力。

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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.