木工字梁抗弯刚度和剪切系数试验方法设计及验证  

Design and verification test methods of the bending stiffness and the coefficient of shear deflection of wood I-joist

作　　者：王春明[1] 王戈 徐兰英[1] 崔宇佳[1] 

机构地区：[1]黑龙江省木材科学研究所,哈尔滨150081 [2]国际竹藤中心,北京100102

出　　处：《木材加工机械》2014年第3期5-7,21,共4页Wood Processing Machinery

基　　金：林业公益性行业科研专项(201304514);林业公益性行业科研专项(201204701)联合资助

摘　　要：设计两种试验方法用来计算木工字梁的抗弯刚度(EI)和剪切系数(K),一种是不同跨度组合的全跨度挠度实验方法,另一种是纯弯曲挠度和全跨度挠度组合实验方法。按照不同跨度组合的全跨度挠度实验方法进行试验,得到了木工字梁的EI和K,可以用于准确预测木工字梁的挠度。还讨论了用原材料性能推算木工字梁EI和K的方法。Two methods have been designed to test the bending stiffness （EI） and the coefficient of shear deflection（K） of wood I-joist. One of them is the entire span deflection in combination of different span; the other is combination of pure bending deflection and entire span deflection. EI and K of wood I-joist is obtained by the test of entire span deflection in combination of different span. It can be used for accurately forecasting deflection of wood I-joist. It also discussed the method to calculate E1 and K of wood I-joist through using properties of raw materials.

关 键 词：木工字梁 木工字搁栅 抗弯刚度 剪切系数 

分 类 号：S781.2[农业科学—木材科学与技术] TU502[农业科学—林学]