文献类型：期刊文献

英文题名：A determination method of compressive design value of dimensional lumber

作者：Zhong, Yong[1,2] Wu, Guofang[1,2] Ren, Haiqing[1,2] Jiang, Zehui[3]

第一作者：钟永

通信作者：Zhong, Y[1];Zhong, Y[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Int Ctr Bamboo & Rattan, Beijing 100091, Peoples R China

年份：2018

卷号：64

期号：5

起止页码：526-537

外文期刊名：JOURNAL OF WOOD SCIENCE

收录：;EI(收录号：20182505337234);Scopus(收录号：2-s2.0-85048518925);WOS:【SCI-EXPANDED(收录号:WOS:000446490500007)】；

基金：This project was financially supported by the National Key Technology Support Programs (2017YFC0703501 and 2015BAD14B0502). We are also honored to thank the Processing and Utilization Technology of High Strength Structural Materials team for providing technical support.

语种：英文

外文关键词：Compressive design value; Dimensional lumber; Full size; Reliability analysis

摘要：The objective of this study was to develop a determination method of compressive design value of dimensional lumber for its safety design and rational application as a green building material. A total of 1049 full-size 2x4 samples of Chinese larch (Larix gmelinii) dimensional lumber, including visual grades Ic, IIc, IIIc, and IVc, were tested by static compressive tests. Compression strength parallel to grain (UCS) of different grades were summarized. By the least square method, the fitted parameters and results for UCS were obtained under different probability distribution models (normal, lognormal and 2-P-Weibull) and test data points (100, 75, 50, 25, and 15%). Based on reliability analysis method, relationships between the reliability index and partial factor were investigated under different probability distribution models, fitting data points, load combinations and load ratios. Finally, this study suggested that the lognormal distribution, 25% data points, load combination of dead load plus residential live load, and load ratio of 1.0 be selected for the determination of compressive design value of Chinese larch dimensional lumber. For Chinese larch dimensional lumber, the compressive design values of grade Ic, IIc, IIIc and IVc were 22.9, 18.3, 14.6 and 13.8MPa, respectively.