| 木质工字梁腹板端头压板稳定性初探 |
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| 引用本文： | 袁福兴,姚顺忠,张宏健.木质工字梁腹板端头压板稳定性初探[J].林产工业,2009,36(3). |
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| 作者姓名： | 袁福兴 姚顺忠 张宏健 |
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| 作者单位： | 西南林学院,昆明,650224 |
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| 基金项目： | 云南省国际合作暨科技兴贸计划，国家自然科学基金 |
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| 摘 要： | 对木质工字梁(IJ)腹板端头压板失稳行为的试验结果表明:木大片刨花板(WWB)、竹大片刨花板(BWB)和胶合板(W-Ply)腹板的失稳均为极值点失稳,且都经历了弹性、弹塑性和屈曲阶段的变形;大片刨花类腹板的失稳破坏特征是层间剪切破坏,胶合板腹板的失稳破坏特征是表板折断破坏;失稳临界荷载的强弱顺序为:W-ply>BWB>WWB;失稳破坏荷载的大小顺序为:(W-Ply≈BWB)>WWB;失稳后残余承载能力的强弱顺序为:BWB>W-Ply>WWB.
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| 关 键 词： | 木质工字梁 腹板 压板稳定性 |
End Instability of the Web of Wooden I-Joist under Perpendicular Loading |
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| YUAN Fu-xing,YAO Shun-zhong,ZHANG Hong-jian.End Instability of the Web of Wooden I-Joist under Perpendicular Loading[J].China Forest Products Industry,2009,36(3). |
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| Authors: | YUAN Fu-xing YAO Shun-zhong ZHANG Hong-jian |
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| Institution: | Southwest Forestry College;Kunming 650224;China |
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| Abstract: | The tests of end instability of the web of wooden I-Joist under perpendicular loading were carried out with 3 kinds of material,waferboard(WWB),bamboo waferboard(BWB) and wood-plywood(W-Ply) being used as webs.Experiment results showed:all the webs made of different kinds of material had limiting maximum instability loading,and their deformation went through elastic,elasto-plastic and buckling stages successively;the main form of end instability of webs made of WWB or BWB was shearing rupture among the wafe... |
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| Keywords: | Wooden I-Joist Web Stability |
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