[1]李静斌,陈淮,葛素娟..支座更换顶升方案对小箱梁桥结构性能的影响[J].郑州大学学报(工学版),2010,31(01):43.[doi:10.3969/j.issn.1671-6833.2010.01.010]
　LI Jingbin,CHEN Huai,Ge Sujuan.Effect of support replacement jacking scheme on structural performance of small box girder bridge[J].Journal of Zhengzhou University (Engineering Science),2010,31(01):43.[doi:10.3969/j.issn.1671-6833.2010.01.010]

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支座更换顶升方案对小箱梁桥结构性能的影响()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

31卷

期数:

2010年01期

页码:

43

栏目:

出版日期:

2010-01-30

文章信息/Info

Title:

Effect of support replacement jacking scheme on structural performance of small box girder bridge

作者:

李静斌; 陈淮; 葛素娟.

郑州大学土木工程学院,河南,郑州,450001

Author(s):

LI Jingbin; CHEN Huai; Ge Sujuan

DOI:

10.3969/j.issn.1671-6833.2010.01.010

文献标志码:

A

摘要:

以支座损坏后进行全部更换的河南甄坟沟大桥为研究对象,利用大型有限元软件MIDAs/Civ-il,对具有较大纵坡的四跨先简支后连续小箱梁桥进行施工过程仿真分析.比选了整体顶升方案和局部顶升方案,比较了2种顶升方案下小箱梁桥的墩顶弯矩、墩顶剪力及跨中弯矩.计算结果表明:各墩台支座顶升最大行程8 mm是合理的.从桥粱上部结构受力合理的角度出发,整体顶升方案优于局部顶升方案,计算结果可供同类工程参考.

Abstract:

Taking the Zhentugou Bridge in Henan Province, which was completely replaced after the support was damaged, as the research object, the construction process simulation analysis of the four-span simple support and then continuous small box girder bridge with large longitudinal slope was carried out by using the large-scale finite element software MIDAs/Civ-il. The overall jacking scheme and the partial jacking scheme were compared, and the pier top bending moment, pier top shear force and span mid-span bending moment of the small box girder bridge under the two jacking schemes were compared. The calculation results show that the maximum lifting stroke of 2 mm of each pier support is reasonable. From the perspective of reasonable force on the superstructure of the bridge, the overall jacking scheme is better than the local jacking scheme, and the calculation results can be used as a reference for similar projects.

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