| 木质工字梁翼缘和腹板梯形槽接口的垂向承载能力 |
| |
| 引用本文： | 陈竹,董春雷,张宏健.木质工字梁翼缘和腹板梯形槽接口的垂向承载能力[J].西南林学院学报,2011,31(3):65-68. |
| |
| 作者姓名： | 陈竹 董春雷 张宏健 |
| |
| 作者单位： | 西南林业大学木质科学与装饰工程学院,云南昆明,650224 |
| |
| 基金项目： | 国家自然科学基金，云南省木材科学与技术重点学科建设基金 |
| |
| 摘 要： | 对不同槽深的木质工字梁（IJ）翼缘、腹板梯形槽接口的垂向承载能力作检测分析，结果表明：接口抗压破坏可分为先期破坏和终极破坏，先期破坏以翼缘与腹板胶合层的剪切破坏或翼缘槽底的横纹拉伸破坏为主，终极破坏包括了胶合层剪切、翼缘木材横纹拉伸和压缩破坏的最终综合性全面破坏，终极破坏荷载大于先期破坏；接口槽深的设计应避免发生先期破坏；接口破坏形式反映了翼缘材料的性能、接13的胶合性能和垂向承压能力。研究指出：以国标（GB／T20241-2006）90E型LVL为翼缘、以林业行标（LY／T1580-2000）OSB／3型大片定向刨花板为腹板，槽深为9～15mm的IJ可以满足我国和美国标准对接口垂向承压能力的要求，其中以12mm糟深为最佳。
|
| 关 键 词： | 木质工字梁 翼缘和腹板梯形槽接口 垂向承载能力 破坏形式 梯形槽深 |
Vertical Bearing Capacity of the Trapezoidal Flange-Web Joint of Wood I-Beam |
| |
| CHEN Zhu,DONG Chun-lei,ZHANG Hong-jian.Vertical Bearing Capacity of the Trapezoidal Flange-Web Joint of Wood I-Beam[J].Journal of Southwest Forestry College,2011,31(3):65-68. |
| |
| Authors: | CHEN Zhu DONG Chun-lei ZHANG Hong-jian |
| |
| Institution: | CHEN Zhu,DONG Chun-lei,ZHANG Hong-jian(Faculty of Wood Science and Technology,Southwest Forestry University,Kunming Yunnan 650224,China) |
| |
| Abstract: | The vertical bearing capacity of the flange-web joint of wood I-joist(IJ)with different groove depths was tested.The results showed that there were two types of failure to the joint,i.e.,the pre-failure and the final failure.The pre-failure included either shear failure of the glue line between the flange and web or tensile failure perpendicular to the grain of the flange wood at the groove bottom,whereas the final failure was a complete failure including not only the shearing and tensile failure but also t... |
| |
| Keywords: | wood I-joists trapezoidal flange-web joint vertical bearing capacity failure appearance groove depth |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
