竹质工字梁抗弯性能的研究  

Study on bending behavior of the bamboo I-shaped beam

作　　者：喻云水[1,2] 周蔚虹[1] 刘学[1] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]竹业湖南省工程研究中心,湖南长沙410004

出　　处：《中南林业科技大学学报》2012年第1期154-156,160,共4页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业科研专项(201004005);湖南省科技重大专项(2011FJ1006);湖南省教育厅高校产业化培育项目(11cy027);中南林业科技大学木材科学与技术国家重点学科资助项目

摘　　要：竹质工字梁是将慈竹竹帘胶合板锯裁成翼缘板与腹板后,通过等边角钢用螺钉联接而成。采用两端简支,在梁跨方向三分点处进行两点加载试验,量测竹质工字梁的应变和变形。结果表明:工字梁翼缘与腹板之间的螺钉连接可靠性与有效性不高,腹板边缘与翼缘之间的剪力不能有效传递;腹板端部发生剪切破坏,腹板受拉区发生裂缝。The bamboo I-shaped beam was made of flange plate and web plate which were sawed and cut from bamboo curtain plywood, and connected and fixed by equilateral angle steel and screws. The loading experiments of the bamboo I-shaped beam were carried out by using simply supported at both ends beam, and loading at three dividing point along the direction of beam span. Theresults indicate that the reliability and effectiveness of the screw fastening between the flanges and web of the I-shaped beam were not high;and the shearing force between the edges of the web plate and the flange plate can not be effectively delivered;the shear compression occurred in the end of the web plate,and the cracks occurred in the tensile region of the web plate.

关 键 词：竹质工字梁 慈竹 竹帘胶合板 力学性能 

分 类 号：S784[农业科学—林学]