文献类型：期刊文献

中文题名：杉木目测等级规格材足尺抗弯强度的设计值研究

英文题名：Design Values of Bending Strength of Visually Graded Cunninghamia lanceolata Dimension Lumber

作者：龚迎春[1] 武国芳[1] 王朝辉[1] 骆秀琴[1] 任海青[1]

第一作者：龚迎春

机构：[1]中国林业科学研究院木材工业研究所

年份：2017

卷号：46

期号：3

起止页码：23-27

中文期刊名：西部林业科学

外文期刊名：Journal of West China Forestry Science

收录：CSTPCD

基金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2016ZX002)

语种：中文

中文关键词：杉木;规格材;抗弯强度;设计值

外文关键词：Cunninghamia lanceolata ; dimension lumber; bending strength ; design values

分类号：TS67

摘要：依据国标GB 50329-2002对杉木规格材进行足尺的抗弯测试,选取正态分布对测试数据进行拟合,利用K-S检验对正态分布进行拟合优度检验,参照极限状态设计法和ASTM D2915-2010标准计算杉木规格材设计值。结果表明,No.1等级规格材的抗弯强度最小;SS、No.1和No.2等级规格材抗弯强度的测试数据均能与正态分布拟合;SS、No.1和No.2等级抗弯强度设计参考值分别为11.01MPa、9.36MPa和9.03MPa。
The specimens of Cunninghamia lanceolata dimension lumber of bending tensile strengtusing the Chinese standard of GB 50329-2002. The normal distribution was selected to fit the experimental data. K-S testing was used to estimate goodness of fit for the normal distribution. The designcording to the limit state design method and ASTM D2915-2010. The results showed that ： the MOR of No. 1 grade was less than that of other grades. The experimental data of bending strength for SS、 No. 1 and No. 2grade were the goodness of fit for the normal distribution. The calculated design values of and 9. 03 MPa for SS, No. 1 and No. 2 grade, respectively.