胶合竹顺纹受拉力学性能试验研究  

THE MECHANICAL PROPERTY TESTS FOR STRUCTURAL GLUBAM OF THE TENSILE STRENGTH PARALLEL TO GRAIN

作　　者：王文静[1] 左宏亮[1] 郭楠[1] 韩晓彬[1] 

机构地区：[1]东北林业大学土木工程学院,哈尔滨150040

出　　处：《低温建筑技术》2015年第4期38-40,共3页Low Temperature Architecture Technology

基　　金：黑龙江省自然科学基金项目(E201217);中国林业局林业科学技术研究项目(2014-4);住建部2013年科学技术项目(2013-K2-4)

摘　　要：胶合竹广泛用于家具制造和建筑模板,但作为结构用材,应用还比较少,以楠竹为原材料加工的胶合竹材的受力性能研究尚不充分。文中加工了有竹节和无竹节的胶合竹试件各15个,通过弹性和弹塑性阶段的拉伸试验,研究胶合竹材的破坏形态、弹性模量、抗拉强度,并与相同尺寸的落叶松木进行对比。试验结果表明有竹节比无竹节的胶合竹抗拉强度低31.17%、弹性模量低9.06%,与落叶松对比有竹节的胶合竹抗拉强度低28.69%、弹性模量高27.7%,无竹节的胶合竹抗拉强度高3.6%、弹性模量高40.43%。竹节处横纹抗拉强度提高,顺纹抗拉强度降低。Bamboo is widely used on furniture industry and building templates, and rarely used as a structual material. Researches on glubam of phyllostachys pubescens mechanical property are not exhaus- tive enough. This thesis studies 30 glubam specimens which have node for 15 and havent node for 15, and make experimental study on fracture morphology and elasticity modulus of glubam and larch wood accord- ing to the tensile test of the elastic, plastic deformation and Tensile strength. The test result show that the tensile strength parallel to grain of no glubam node＇s is larger than glubam node＇s by 31.17% and 9.06% of elasticity modulus, and the tensile strength parallel to grain of glubam node＇s is less than the larch wood by 28.69% and larger by 27.7% of elasticity modulus, and the tensile strength parallel to grain of no glu- bam node＇s is larger than the larch wood by 3.6% and larger by 40.43%of elasticity modulus. The tensile strength across the grain of nods is better than the Tensile strength parallel to grain.

关 键 词：楠竹 胶合竹 顺纹抗拉强度 弹性模量 

分 类 号：TU366.3[建筑科学—结构工程]