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| 分批张拉预应力损失的空间简化计算方法 | |
| 引用本文： | 丁南宏,钱永久,林丽霞.分批张拉预应力损失的空间简化计算方法[J].公路交通科技,2006,23(6):66-68,71. |
| 作者姓名： | 丁南宏 钱永久 林丽霞 |
| 作者单位： | 1. 西南交通大学,土木工程学院,四川,成都,610031;兰州交通大学,土木工程学院,甘肃,兰州,730070 2. 西南交通大学,土木工程学院,四川,成都,610031 3. 兰州交通大学,土木工程学院,甘肃,兰州,730070 |
| 基金项目： | 高等学校优秀青年教师教学科研奖励计划资助项目（a0110719950102）;兰州交通大学“青蓝”人才工程基金资助计划（QL-05-13A） |
| 摘 要： | 预应力混凝土多主梁结构的预应力钢筋分批张拉损失计算,按照空间结构理论计算将非常繁琐.结合荷载横向分布系数概念,将竖平面内的预应力钢筋分批张拉损失计算式进行推广,推导了具有普遍适用性的分批张拉损失空间简化计算公式.算例分析表明：该公式能方便地进行桥梁结构中常见的预应力混凝土整体式多主梁或采用体外预应力加固的混凝土装配式多主梁的分批张拉损失计算,是一种有效的空间实用方法. |
| 关 键 词： | 分批张拉 预应力损失 桥梁 荷载横向分布系数 体外预应力加固 |
| 文章编号： | 1002-0268（2006）06-0066-03 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005-03-07 |
A Simplified Spatial Method to Calculate the Prestressing Loss Caused by Batched Tension Process |
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| DING Nan-hong,QIAN Yong-jiu,LIN Li-xia.A Simplified Spatial Method to Calculate the Prestressing Loss Caused by Batched Tension Process[J].Journal of Highway and Transportation Research and Development,2006,23(6):66-68,71. | |
| Authors: | DING Nan-hong QIAN Yong-jiu LIN Li-xia |
| Institution: | 1. School of Civil Engineering, Southwest Jiaotong University, Siehuan Chengdu 610031, China; 2. School of Civil Engineering, Lanzhou Jiaotong University, Gansu Lanzhou 730070, China |
| Abstract: | Calculation of the prestressing loss caused by batched tension process is very complicated in calculation using spatial structural theory. Based on the concept of load lateral distribution coefficient, the expression used to calculate the prestressing loss caused by batched tension process applied in vertical plane, is extended to a simplified spatial formula which has general applicability. The formula is effective and convenient to calculate the prestressing loss caused by batched tension, especially for integral prestressing concrete multi -beam and assembly concrete beam strengthened by external prestressing, which are commonly used in bridge engineering. All those are verified in the paper by analysis of an example. |
| Keywords: | batched tension prestressing loss bridge load lateral distribution coefficient strengthening by external prestressing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |