| 预应力混凝土桥梁施工挠度时效分析 |
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| 引用本文： | 唐海红,黄侨,林阳子. 预应力混凝土桥梁施工挠度时效分析[J]. 科学技术与工程, 2009, 9(1) |
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| 作者姓名： | 唐海红 黄侨 林阳子 |
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| 作者单位： | 哈尔滨工业大学,桥梁工程研究所,哈尔滨,150090;哈尔滨工业大学,桥梁工程研究所,哈尔滨,150090;东南大学,交通学院,南京,210096 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 通过分析桥梁施工过程力学性能的时效变化,考虑徐变、钢束松弛、混凝土强度等时效因素及结构性质的变异性,并引入模型综合修正系数及时效综合修正系数,建立了施工阶段结构挠度增量的计算模型;并利用Monte Carlo模拟方法,实现了施工阶段结构挠度增量的概率时效分析及预测.根据实际工程给出详细的计算算例,证明了方法的可行性和适用性,可供其他工程参考.
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| 关 键 词： | 预应力混凝土 施工挠度 时效分析 桥梁 |
Time-based Effect Analysis on Constructional Deflection of Prestressed Concrete Bridge |
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| TANG Hai-hong,HUANG Qiao,LIN Yang-zi. Time-based Effect Analysis on Constructional Deflection of Prestressed Concrete Bridge[J]. Science Technology and Engineering, 2009, 9(1) |
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| Authors: | TANG Hai-hong HUANG Qiao LIN Yang-zi |
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| Affiliation: | Institute of Bridge Engineering;Harbin Institute of Technology1;Harbin 150090;P.R.China;Communication School;Southeast University2;Nanjing 210096;P.R.China |
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| Abstract: | Based on the time-based effect analysis of the bridge constructional mechanical property,particular attention is paid on the analysis and establish of the structural deflection increment models on construction stage,by taking account of the time dependent factors such as strength and creep of concrete as well as relaxation of tendon,and further inducting the model synthetic correction factor and time-based effect synthetic correction factor.Then using the Monte Carlo simulation technique calculation,the tim... |
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| Keywords: | prestressed concrete constructional deflection time-based effect analysis bridge |
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