文献类型：期刊文献

中文题名：国产落叶松正交胶合木顺纹抗压强度尺寸效应

英文题名：Effect of Size on Compressive Strength Parallel to the Grain of Cross-Laminated Timber Made with Domestic Larch

作者：龚迎春[1] 叶琦[2] 武国芳[3] 任海青[1] 管成[2]

机构：[1]中国林科院林业新技术研究所,北京100091;[2]北京林业大学工学院,北京100083;[3]中国林科院木材工业研究所,北京100091

年份：2021

卷号：35

期号：1

起止页码：42-46

中文期刊名：木材科学与技术

外文期刊名：China Wood Industry

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：中央级公益性科研院所基本科研业务费专项资金“正交胶合木墙体稳定性能研”(CAFYBB2018SY032);国家自然科学基金“正交胶合木构件受压失稳机理及计算方法研究”(51808546)。

语种：中文

中文关键词：正交胶合木;顺纹抗压强度;尺寸效应

外文关键词：cross-laminated timber;compression strength parallel to grain;size effect

分类号：S781;S791.25

摘要：基于GB/T 50329—2012《木结构试验方法标准》,测试国产落叶松正交胶合木(CLT)顺纹抗压强度,运用最弱链理论分析试件尺寸对CLT顺纹抗压强度的影响,并采用非参数统计法估计尺寸效应系数。研究结果表明:随着CLT试件长度或宽度的增加,其顺纹抗压强度下降。其中长度尺寸效应系数SL与百分位数呈线性关系;宽度尺寸效应系数SW为常数0.349;试件厚度变化对其顺纹抗压强度无显著影响。
The compressive strength of cross-laminated timber made by Chinese larch was tested based on the standard of GB/T 50329—2012 on testing methods for timber structures.The weakest-link theory was used to analyze size effects of CLT's compression strength parallel to the grain.The nonparametric statistics method was used to estimate the coefficient of the size effect.The result showed that the compression strength decreases with the increase of either the length or the width.And there is a significant linear relation between the coefficient of the length effect SLand different percentiles;the coefficient of the width effect SW was 0.349;there is no significant relation between the thickness and the compression strength parallel to the grain.