基于静态弯曲性能的木质工字梁设计计算方法探讨  

An Approach to Analyzing Static Bending Performance of Wood I-Joist

作　　者：张宏健[1] 董春雷[1] Ying Hei Chui 袁福兴[1] 

机构地区：[1]西南林学院木质科学与装饰工程学院,云南昆明650224 [2]加拿大NewBrunswick大学木材科技中心,加拿大E3C2G6

出　　处：《木材工业》2009年第4期19-21,共3页China Wood Industry

基　　金：云南省国际合作暨科技兴贸计划(2006GH11);国家自然科学基金项目(30771684)

摘　　要：参照钢质工字梁静态弯曲理论,对木质工字梁(IJ)的"荷载-位移"曲线、IJ正应力理论计算值与实测值、IJ整梁挠度理论计算值与实测值的对比分析,结果认定:1)钢质工字梁的静态弯曲理论计算公式,可用于IJ弹性段应力和挠度的分析计算;2)IJ整梁静态弯曲性能的分析计算时,应注意IJ上翼缘压缩特性和下翼缘拉伸特性的差异。Based on the classic static bending theory of a homogenous steel I-beam, the authors of this study investigated the load-displacement performance of non-homogeneous wood I-joists （I J） made from different wood composites. The theoretical results and actual load-displacement data of wood I-joists were compared. The results indicated that： 1） the classic static bending theory based on a steel I-beam could still be applied to wood I-Joists within the elastic stage;2）the tensile strain of the bottom flange and the compressive strain of the top flange were different and should be distinguished when designing wood 1-joists.

关 键 词：木质工字梁 静态弯曲性能 翼缘 

分 类 号：TU366.2[建筑科学—结构工程]