| 圆孔蜂窝梁墩心截面正应力有限元分析与简化计算 |
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| 引用本文： | 阮祥炬,周朝阳.圆孔蜂窝梁墩心截面正应力有限元分析与简化计算[J].长沙交通学院学报,2005,21(4):42-46. |
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| 作者姓名： | 阮祥炬 周朝阳 |
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| 作者单位： | 中南大学土木建筑学院,湖南,长沙,410075 |
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| 摘 要： | 通过对局部开设圆孔的蜂窝梁的弹性有限元分析,指出其邻孔之间的墩心截面上弯曲正应力分布不符合平截面假定,并提出按双直线分布进行近似处理,建立了相应的截面弯矩-边缘应力-受力区高度关系式,给出了受力区高度与孔径、孔距的相关方程,用之于应力计算,简便而又实用.
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| 关 键 词： | 弯曲应力 蜂窝梁 有限元分析 简化计算 |
| 文章编号： | 1000-9779(2005)04-0042-05 |
| 收稿时间： | 09 8 2005 12:00AM |
| 修稿时间： | 2005年9月8日 |
FEA and Simplified Calculation for Normal Stresses at Mid-pier Sections of Circle-castellated Beams |
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| RUAN Xiang-ju,ZHOU Chao-yang.FEA and Simplified Calculation for Normal Stresses at Mid-pier Sections of Circle-castellated Beams[J].Journal of Changsha Communications University,2005,21(4):42-46. |
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| Authors: | RUAN Xiang-ju ZHOU Chao-yang |
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| Institution: | School of Civil Engineering and Architecture, Central South University, Changsha 410075, China |
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| Abstract: | Elastic finite element analyses are made for castellated beams partially set with circle holes. The results indicate the normal stresses distribution at mid-pier sections between adjacent holes does not accord with those of the traditional assumption for plane sections. Then bilinear distribution is proposed for approximate calculation of bending stress. The relationship is accordingly established among bending moment, edge stress of the section and depth of the stress district. And a expression is given to correlate depth of the stress district with diameter and space of the hole. Comparisons with the FEA results show the simplified approach is convenient and practical for stress calculation of the mid-pier sections. |
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| Keywords: | bending stress castellated beam finite element analysis simplified calculation |
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