| 木工字梁的挠度计算方法探讨 |
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| 引用本文： | 王春明,王戈,林利民,孟黎鹏,刘一楠,徐兰英.木工字梁的挠度计算方法探讨[J].林业机械与木工设备,2011,39(9). |
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| 作者姓名： | 王春明 王戈 林利民 孟黎鹏 刘一楠 徐兰英 |
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| 作者单位： | 1. 黑龙江省木材科学研究所,黑龙江哈尔滨,150081
2. 国际竹藤网络中心,北京,100102 |
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| 基金项目： | 基金项目:林业公益性行业科研专项(200904016):国家标准制定计划项目(20071684-T-432):引进国际先进林业科学技术创新项目(“948”计划) |
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| 摘 要： | 对木工字梁的挠度进行了公式推导、试验、计算和验证分析。结果表明，考虑剪切变形时，实测挠度值与预测挠度值非常接近；忽略剪切变形时，实测值和预测值相差非常大。理论和实测证明了在计算木工字梁挠度时剪切变形是不可忽略的。采用试验方法可以得到木工字梁的EI和K值，其可用于准确预测木工字梁的挠度，为木工字梁挠度计算和预测提供了一种比较简单的方法。
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| 关 键 词： | 木工字梁 木工字搁栅 挠度 剪切变形 |
Discussion on Deflection Calculation Method of Wood I-beam |
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| WANG Chun-ming,WANG Ge,LIN Li-min,MENG Li-peng,LIU Yi-nan,XU Lan-ying.Discussion on Deflection Calculation Method of Wood I-beam[J].Forestry Machinery & Woodworking Equipment,2011,39(9). |
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| Authors: | WANG Chun-ming WANG Ge LIN Li-min MENG Li-peng LIU Yi-nan XU Lan-ying |
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| Institution: | WANG Chun-ming1,WANG Ge2,LIN Li-min1,MENG Li-peng1,LIU Yi-nan1,XU Lan-ying1(1.Wood Science Research Institute of Heilongjiang Province,Harbin Heilongjiang 150081,China,2.International Centre for Bamboo and Rattan,Beijing 100102,China) |
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| Abstract: | The formula derivation, test, calculation,verification and analysis of the deflection of wood I-beam are conducted. The results show that considering shearing deformation,the measured deflection value is very close to the predicted deflection value while there is a big difference between measured value and predicted value when ignoring shear deformation. Theory and real measurement show that shear deformation can＇t be ignored when calculating the deflection of wood Z-beam. Such values as EI and K of wood I-beam can be obtained through the test, and those values can be used for the accurate prediction of the deflection of wood I-beam, which provides a comparatively simple method for calculating and predicting the deflection of wood Z-beam. |
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| Keywords: | wood I-beam wood I-joist deflection shear deformation |
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