[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.
　LI Jingbin,CHEN Huai,GE Sujuan.Jack-up Scheme of Bearing Replacement Influence on the Structural Performance of Small Box Girder Bridge[J].Journal of Zhengzhou University (Engineering Science),2010,31(01):43.
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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
期数:
2010年01期
页码:
43
栏目:
出版日期:
2010-01-30

文章信息/Info

Title:
Jack-up Scheme of Bearing Replacement Influence on the 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
School of Civil Engineering．Zhengzhou University，Zhengzhou 45000 1，China
Keywords:
bridge engineering; small box girder; finite element method; jack-up construction program; mechanical properties
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:
The Zhenfengou Bridge is asupported-continuous prestressed concrete small box-girder bridge，which is bearing replacements after damaging，is taken as the object to study in this thesis．The finite elementsoftware MIDAS／Civil is applied to set up the bridge’S FEM model and the bridge is calculated during thewhole construction stages．Two kinds of jack—up construction programs are considered，one is the whole jack·up construction program and the other is the partial jack-up construction program．The shear forces of the piertop，the bending moments of the midspan and the bending moments of the pier top both in the two programsare compared．The calculation results show，the 8mm maximum jack-up route is rational．From the opinion ofthe bridge’8 superstructure load bearing reasonability，the whole jack·up construction program is better thanthe partial jack—up construction program．The calculation results can be a reference for the similar project．
更新日期/Last Update: 1900-01-01