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.
作者
龚迎春
武国芳
王朝辉
骆秀琴
任海青
GONG Ying- chun WU Guo- fang WANG Zhao- hui LUO Xiu- qin REN Hai-qing(Institute of Wood Industry, Chinese Academy of Foretry Sciencest, Beijing 100091, P. R. China)
出处
《西部林业科学》
CAS
2017年第3期23-27,共5页
Journal of West China Forestry Science
基金
中央级公益性科研院所基本科研业务费专项资金(CAFYBB2016ZX002)
关键词
杉木
规格材
抗弯强度
设计值
Cunninghamia lanceolata
dimension lumber
bending strength
design values
