| 考虑混凝土抗拉的开裂截面墩柱的中性轴位置研究 |
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| 引用本文： | 彭建中,郑罡.考虑混凝土抗拉的开裂截面墩柱的中性轴位置研究[J].三峡大学学报(自然科学版),2011,33(2):53-55. |
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| 作者姓名： | 彭建中 郑罡 |
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| 作者单位： | 1. 重庆交通大学土木建筑学院,重庆,400074
2. 招商局重庆交通科研设计院有限公司,重庆,400067 |
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| 基金项目： | 国家自然科学基金，重庆市杰出青年科技基金 |
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| 摘 要： | 以基本的力学理论为依据，对双筋矩形截面混凝土墩柱受力模式进行简化，通过力学平衡方程，从理论上分析了墩柱的受力过程，进而在考虑混凝土受拉的条件下，求解出墩柱开裂截面中性轴的位置．本文计算公式可适用于钢筋混凝土悬臂桥墩变形分析，对后期截面刚度的计算以及墩柱混凝土开裂前沿的求解也有一定的参考意义．
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| 关 键 词： | 钢筋混凝土墩柱 开裂刚度 中性轴 应力-应变 |
Research of Identifying Neutral Axis Location of Tensile Strength of Concrete Piers with Double Reinforcement Cracking Cross-section |
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| Peng Jianzhong,Zheng Gang.Research of Identifying Neutral Axis Location of Tensile Strength of Concrete Piers with Double Reinforcement Cracking Cross-section[J].Journal of China Three Gorges University(Natural Sciences),2011,33(2):53-55. |
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| Authors: | Peng Jianzhong Zheng Gang |
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| Institution: | 1.School of Civil Engineering & Architecture,Chongqing Jiaotong Univ.,Chongqing 400074,China;2.Chongqing Communications Research & Design Institute,Chongqing 400067,China) |
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| Abstract: | According to the principle of mechanics,this thesis predigested the mechanical mode of the bi-reinforced rectangular concrete column,through the mechanical balance equation,analyse the force process of the pier column theoretically;and then considering the condition of concrete in tension,the neutral axis position of the pier column cracking section is obtained by calculation.These formulas in this thesis can be applied to the deformation analysis of the cantilever bridge piers of reinforced concrete;and it also has some reference value for the calculation of post-section stiffness and the solving of the forefront of concrete in pier column cracking. |
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| Keywords: | reinforced concrete pier column cracking stiffness neutral axis stress-strain |
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