| 大跨度钢管砼拱桥砼时变模式分析 |
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| 引用本文： | 张建民,郑皆连,秦荣. 大跨度钢管砼拱桥砼时变模式分析[J]. 重庆交通大学学报(自然科学版), 2001, 20(4): 11-15 |
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| 作者姓名： | 张建民 郑皆连 秦荣 |
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| 作者单位： | 华南理工大学土木系;广西交通厅;广西大学土木系 |
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| 基金项目： | 广西科技攻关计划资助项目(桂科攻00 12018) |
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| 摘 要： | 采用《规范》[1] 提供的徐变系数 ,结合按龄期调整的有效模量法 ,编制了相应的计算程序 .针对主跨度为349m的南宁永和大桥变高度截面钢管砼桁式拱桥进行了数值计算 ,计算结果表明 ,砼的徐变能在一定程度改善钢管砼拱桥结构的受力状况 ,钢管砼拱桥的内力计算应考虑砼徐变的影响
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| 关 键 词： | 钢管砼 拱桥 徐变系数 |
| 文章编号： | 1001-716(2001)04-0011-05 |
| 修稿时间： | 2001-05-08 |
Time-dependent behavior analysis of long span CFST arch b ridge |
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| Abstract: | According to the age adjusted effective modulus method and the creep coefficient provided by the Rule ,a computing program is presented in this paper.Being aimed at the Yonghe bridge in the city of Nanning, a truss arch bridge with concrete filled steel tubules(CFST) and with a main span of 349m, a numerical calculation is carried out .The results shows that the creep effect can improve the internal force and deformation state of CFST arch bridge to some extent, the redistributed internal force is considerably large. |
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| Keywords: | concrete filled steel tubule(CFST) arch bridge creep coefficient |
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