| 柱下独立基础的塑性铰线分布 |
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| 引用本文： | 赵玉星,李宏伟.柱下独立基础的塑性铰线分布[J].山东建筑大学学报,2001,16(2):14-17. |
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| 作者姓名： | 赵玉星 李宏伟 |
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| 作者单位： | 1. 山东建筑工程学院土木工程系,
2. 滨州师范专科学校, |
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| 摘 要： | 为了进行柱下钢筋混凝土独立基础的非线性分析,以Hencky中厚板理论为基础,提出了8结点理想弹塑性板单元模型.使用这种单元,对于柱下钢筋混凝土独立基础的抗弯受力,进行了弹塑性分析.根据分析结果,明确了塑性铰线的分布规律倾斜方向的塑性铰线,其倾斜角度必定处在(0,45°]的区间内,不会超出45°.这一结论表明,我国地基基础设计规范中的有关抗弯计算方法是不够合理的.据此,对我国地基基础设计规范的有关内容提出修正建议.
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| 关 键 词： | 独立基础 弹塑性分析 塑性铰线 混凝土结构 |
| 文章编号： | 1003-5990(2001)02-0014-04 |
| 修稿时间： | 2001年3月1日 |
Yield line distribution in individual footing |
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| Abstract: | Based on the Hencky theory of medium thickness plates, the perfect elasto-plas tic model of 8-point-plate-elements is put forward for the nonlinear analysis of individual footing. The elasto-plastic analysis of individual footing subje cted to bending is performed by this kind of element model. Based on the resul t, the authors put forward the yield-line distribution trai t:leaning direction of the yield-line is within the interval (0°,45°]. T his argument shows t hat the current calculation method for the bending moment of the footing in technical code of soil and foundation used in China is unreasonable. Some suggesti ons are presented to improve the related items concerning the bending of spread footing in the technical code above. |
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