| 用高阶剪切理论研究竹木复合空心板的弯曲性能 |
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| 引用本文： | 王泉中,张齐生,朱一辛.用高阶剪切理论研究竹木复合空心板的弯曲性能[J].林业科学,2005,41(1):127-130. |
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| 作者姓名： | 王泉中 张齐生 朱一辛 |
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| 作者单位： | 南京林业大学,南京,210037 |
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| 基金项目： | 国家九五攻关项目 (960 110 2 0 70 2 )资助。 |
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| 摘 要： | 运用高阶剪切理论对竹木复合空心板的弯曲性能进行分析与研究。结果表明 :在跨高比较小时 ,横向剪切效应对板的弯曲性能有显著影响 ;预测的变形与一阶剪切理论基本相当 ;预测的强度能够反映出横向剪切效应的影响 ,其影响只与载荷大小有关 ,而与跨高比无关 ;描述横截面上的应力分布与一阶剪切理论显著不同 ,尤其是剪应力 ,不仅在跨中截面上存在较大差异 ,而且还随截面的位置而变。
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| 关 键 词： | 高阶剪切理论 竹木复合空心板 弯曲性能 横向剪切效应 |
| 文章编号： | 1001-7488(2005)01-0127-04 |
| 修稿时间： | 2003年1月9日 |
Study on the Bending Properties of the Hollow Plank of Bamboo-Timber Combination with HSDT |
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| Wang Quanzhong,Zhang Qisheng,Zhu Yixin.Study on the Bending Properties of the Hollow Plank of Bamboo-Timber Combination with HSDT[J].Scientia Silvae Sinicae,2005,41(1):127-130. |
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| Authors: | Wang Quanzhong Zhang Qisheng Zhu Yixin |
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| Institution: | Nanjing Forestry University Nanjing 210037 |
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| Abstract: | The bending properties of the hollow plank of the bamboo-timber combination were in detail analyzed with high-order shear deformation theory(HSDT) in this paper. The results indicated that transverse shear effect affects greatly on the bending properties of the plank while the ratio of span-height was small. The calculated deflection was the basic same with first-order shear deformation theory(FSDT). The calculated strength could show the affection caused by transverse shear effect and the affection had only relation to the loading value and no to the ratio of span-height. The distribution of stress on cross-section was obvious different from FSDT and particularly shear-stress had not only considerable difference on cross-section in span-center but also change as the location of cross-section. |
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| Keywords: | high-order shear deformation theory hollow plank of bamboo-timber combination bending properties transverse shear efffect |
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