【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。更多还原

【Abstract】 The specimens of Cunninghamia lanceolata dimension lumber of bending tensile strength were tested by using 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 design values were calculated according to the limit state design method and ASTM D2915-2010. The results showed that: the MOR15 of No. 1grade 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 MOR15 were 11. 01,9. 36,and 9. 03 MPa for SS,No. 1 and No. 2 grade,respectively.更多还原