| 钢管混凝土拱桥的徐变效应计算分析 |
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| 引用本文： | 郝超.钢管混凝土拱桥的徐变效应计算分析[J].公路交通科技,2006,23(6):69-71. |
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| 作者姓名： | 郝超 |
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| 作者单位： | 金华市交通规划设计院,浙江,金华,321005;金华职业技术学院,建工学院,浙江,金华,321000 |
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| 摘 要： | 钢管混凝土拱桥徐变影响因素较多,目前研究相对滞后,文章根据设计规范中有关混凝土徐变系数的计算公式,把混凝土徐变度函数公式化,利用对应力和时间的积分概念,推导了结构分析中混凝土徐变计算方法。结合梅溪河大桥,按照划分的施工阶段进行了计算,分析了徐变对其各施工阶段内力、位移的影响。指出混凝土徐变对钢管混凝土拱桥的位移、内力重分布影响非常显著,应引起工程界及理论界的重视。
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| 关 键 词： | 拱桥 钢管混凝土结构 徐变 内力重分布 |
| 文章编号： | 1002-0268(2006)06-0069-03 |
| 收稿时间： | 2005-03-28 |
| 修稿时间： | 2005年3月28日 |
Computation and Analysis of the Creep Effect of Concrete-filled Steel Tubular Arch Bridge |
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| HAO Chao.Computation and Analysis of the Creep Effect of Concrete-filled Steel Tubular Arch Bridge[J].Journal of Highway and Transportation Research and Development,2006,23(6):69-71. |
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| Authors: | HAO Chao |
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| Abstract: | There are many factors which influence the concrete creep of concrete-filled steel tubular arch bridge,and theory study lags behind relatively.Based on the computing formula of creep coefficient in criterion,the creep function is formulated.The computing method of creep in structure analysis is deduced,using the integral concept to stress and time.Combined with the calculation of Meixi River Bridge,it is pointed out that creep affects the displacement of CFST arch bridge prominently,it will lead to redistribution of internal force.And it should be recognized by engineering circle. |
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| Keywords: | arch bridge concrete-filled steel tube structure creep internal force redistribution |
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