| 双筋矩形截面混凝土墩柱的开裂前沿简化计算 |
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| 引用本文： | 彭建中,叶永.双筋矩形截面混凝土墩柱的开裂前沿简化计算[J].三峡大学学报(自然科学版),2011,33(5):46-49. |
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| 作者姓名： | 彭建中 叶永 |
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| 作者单位： | 1. 东莞城建规划设计院,广东东莞,400074
2. 三峡大学水利与环境学院,湖北宜昌,443002 |
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| 摘 要： | 基于力学理论,对双筋矩形截面混凝土墩柱受力模式进行简化,建立模型的力学平衡方程,并分析墩柱模型的受力过程及开裂机理.运用＂三段式＂方法,在考虑混凝土受拉的条件下,求解墩柱开裂截面中性轴的位置,得到混凝土抗力ΔP（z）沿墩身分布的函数表达式.计算结果可适用于钢筋混凝土悬臂桥墩变形分析,提出的＂三段式＂分析方法可以求出墩柱各截面刚度以及墩柱墩顶位移曲线,有助于钢筋混凝土墩柱在复杂载荷作用下的开裂机理研究.
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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 |
Simplified Calculation of "Crack front " of Double Reinforced Concrete Rectangular Piers |
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| Peng Jianzhong,Ye Yong.Simplified Calculation of "Crack front " of Double Reinforced Concrete Rectangular Piers[J].Journal of China Three Gorges University(Natural Sciences),2011,33(5):46-49. |
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| Authors: | Peng Jianzhong Ye Yong |
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| Institution: | Peng Jianzhong1 Ye Yong2(1.Dongguan Urban Construction & Planning Institute,Dongguan 400074,China,2.College of Hydraulic & Environmental Engineering,China Three Gorges Univ.,Yichang 443002,China) |
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| Abstract: | According to the theory in basal mechanics,this thesis predigested the mechanical mode of the double reinforced rectangular concrete column,built the mechanical balance equation,and analysed stress process of the pier in theory.Under the condition that regarding concrete is being pulled,we should search the position of neutral axis of the cracking section by three-phase theory in order to get function expression of the concrete's resisting power along the length direction of the pier.These calculated result... |
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| Keywords: | reinforced concrete pier column cracking stiffness neutral axis stress-strain |
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