| 连续梁桥的中跨底板预应力束对预拱度的影响 |
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| 引用本文： | 何文杰.连续梁桥的中跨底板预应力束对预拱度的影响[J].科学技术与工程,2010,10(33). |
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| 作者姓名： | 何文杰 |
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| 作者单位： | 1. 长安大学公路学院,西安,710064
2. 山东黄河工程集团有限公司第二工程处,济南,250032 |
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| 摘 要： | 以京杭运河大桥为例,探讨采用悬臂法施工的大跨径预应力混凝土连续梁桥的中跨底板预应力束对主跨预拱度的影响。采用Midas/Civil程序建立了桥梁的空间有限元计算模型,计算了主跨跨中底板预应力束张拉前后主跨梁段挠度的变化值,并对计算值和实测值进行了比较。所得结果可为同种类型桥梁预拱度曲线图中主跨跨中曲线下挠值的调整提供参考。
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| 关 键 词： | 连续梁桥 中跨预应力束 预拱度 |
| 收稿时间： | 9/3/2010 11:54:03 PM |
| 修稿时间： | 2010/9/19 0:00:00 |
The influence of bottom prestressed steel of continuous beam bridge on bridge camber |
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| hewenjie.The influence of bottom prestressed steel of continuous beam bridge on bridge camber[J].Science Technology and Engineering,2010,10(33). |
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| Authors: | hewenjie |
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| Institution: | HE Wen-jie,SHE Xiao-ming*,KONG Qing1(School of Highway,Chang'an University,Xi'an 710064,P.R.China,The 2nd agency of Shandong Yellow River Engineering Group Co.Ltd1,Jinan 250032,P.R.China) |
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| Abstract: | The Jing-hang Canal bridge is taken as an example to probe into the influence of bottom prestressed steel of continuous beam bridge on bridge camber,and the space finite element model of the bridge is established by means of the sof tware Midas/Civil.The deformation of main segment of beam after stretching the prestressed steel is carried out,and make a comparison between the theoretical value and the measured value.The result can be used to offer reference for adjusting the camber curve of main span in sam... |
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| Keywords: | continuous beam bridge bottom prestressed steel bridge camber |
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