| 公路钢筋混凝土梁桥的长期挠度分析 |
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| 引用本文： | 吴小平, 宋一凡, 贺拴海. 公路钢筋混凝土梁桥的长期挠度分析[J]. 交通运输工程学报, 2001, 1(4): 48-50. |
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| 作者姓名： | 吴小平 宋一凡 贺拴海 |
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| 作者单位： | 1.浙江大学 土木工程系, 浙江 杭州 310027;;2.长安大学 公路学院, 陕西 西安 710064 |
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| 摘 要： | 用平均收缩应变综合考虑收缩与徐变的影响, 从曲率k入手, 对钢筋混凝土截面的受力进行全过程分析, 导出M- k关系式, 从而根据钢筋混凝土截面刚度的变化推导出梁在不同受力阶段挠度计算公式。εsh和Ece为分析方法的两个主要控制参数
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| 关 键 词： | 钢筋混凝土梁 收缩 徐变 曲率 长期挠度 |
| 文章编号： | 1671-1637(2001)04-0048-03 |
| 收稿时间： | 2001-08-20 |
| 修稿时间： | 2001-08-20 |
Analysis of Long-term Deflection of Reinforced Concrete Beams |
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| WU Xiao-ping, SONG Yi-fan, HE Shuan-hai. Analysis of Long-term Deflection of Reinforced Concrete Beams[J]. Journal of Traffic and Transportation Engineering, 2001, 1(4): 48-50. |
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| Authors: | WU Xiao ping SONG Yi fan HE Shuan hai |
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| Affiliation: | 1. Department of Civil Engineering, Zhejiang University, Hangzhou 310027, China;;2. School of Highway, Chang′an University, X′an 710064, China |
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| Abstract: | Considering the effect of shrinkage and creeping with the average shrinkage strain, and by aid of the curvature parameter k, this paper analyzes the mechanical characteristic of reinforced concrete section.Then a formula that can describe the relation of M and k is derived.According to the section stiffness of the RC beams, this paper gives the formulas to calculate the deflection of the beam at different stage. |
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| Keywords: | reinforced concrete beam shrinkage creeping curvature long term deflection |
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