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 ,4 5°]的区间内 ,不会超出 4 5°。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。
Based on the Hencky theory of medium thickness plates, the perfect elasto plastic model of 8 point plate elements is put forward for the nonlinear analysis of individual footing. The elasto plastic analysis of individual footing subjected to bending is performed by this kind of element model. Based on the result, the authors put forward the yield line distribution trait:leaning direction of the yield line is within the interval (0°,45°]. This argument shows that the current calculation method for the bending moment of the footing in technical code of soil and foundation used in China is unreasonable. Some suggestions are presented to improve the related items concerning the bending of spread footing in the technical code above.
出处
《山东建筑工程学院学报》
2001年第2期14-17,共4页
Journal of Shandong Institute of Architecture and Engineering
关键词
独立基础
弹塑性分析
塑性铰线
混凝土结构
individual footing
elasto plastic analysis
yield line
reinforced concrete structure
