| 体外预应力钢箱—混凝土组合梁的预应力损失的计算方法 |
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| 引用本文： | 周奇,张南,洪英维.体外预应力钢箱—混凝土组合梁的预应力损失的计算方法[J].中南公路工程,2007,32(4):40-44. |
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| 作者姓名： | 周奇 张南 洪英维 |
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| 作者单位： | 南京工业大学土木工程学院 江苏南京210009(周奇，张南)，江西省交通设计院 江西南昌330002(洪英维) |
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| 基金项目： | 江苏省普通高校自然科学研究计划资助项目（02KJB560001） |
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| 摘 要： | 考虑了钢梁、栓钉以及非预应力筋对混凝土变形的约束作用,分析了体外预应力钢箱—混凝土组合梁的预应力损失的基本特性,建立了混凝土非自由收缩、徐变变形引起的体外预应力钢箱—混凝土组合梁的预应力损失的计算公式。
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| 关 键 词： | 预应力损失 体外预应力 钢箱—混凝土组合梁 非自由收缩变形 非自由徐变变形 |
| 文章编号： | 1002-1205（2007）04-0040-05 |
| 收稿时间： | 2006-09-27 |
| 修稿时间： | 2006-09-27 |
The Calculation for the Loss of Pre-stressing in the External Pre-stressed Steel-Concrete Composite Box Beam |
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| ZHOU Qi, ZHANG Nan, HONG Yingwei.The Calculation for the Loss of Pre-stressing in the External Pre-stressed Steel-Concrete Composite Box Beam[J].Central South Highway Engineering,2007,32(4):40-44. |
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| Authors: | ZHOU Qi ZHANG Nan HONG Yingwei |
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| Institution: | 1. College of Civil Engineering, Nanjing University of Technology, Nanjing, Jiangsu 210009, China; 2. Communication Design Institute of J.X. Province, Nanchang, Jiangxi 330002, China |
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| Abstract: | Taking the restriction of steel beam,stud and reinforcing steel bar into account,the loss of pre-stressing in the external pre-stressed steel-concrete composite box beam has been analyzed,and the formula of the loss of pre-stressing caused by restricted concrete shrinkage and creep deformation has been set up. |
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| Keywords: | the loss of pre-stressing external pre-stressing tendon steel-concrete composite box beam restricted concrete shrinkage restricted concrete creep deformation |
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