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[1]黄成国,朱铮栋,唐益军,等.曲线钢箱梁桥步履式顶推施工横向倾覆稳定性影响因素的分析[J].南京工业大学学报(自然科学版),2020,42(03):399-404.
 HUANG Chengguo,ZHU Zhengdong,TANG Yijun,et al.Analysis of factors influencing transverse overturning stability of curved steel box girder bridge by hydraulic-walking incremental launching construction[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(03):399-404.
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曲线钢箱梁桥步履式顶推施工横向倾覆稳定性影响因素的分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年03期
页码:
399-404
栏目:
出版日期:
2020-05-20

文章信息/Info

Title:
Analysis of factors influencing transverse overturning stability of curved steel box girder bridge by hydraulic-walking incremental launching construction
文章编号:
1671-7627(2020)03-0399-06
作者:
黄成国1朱铮栋2唐益军2李枝军2
1.江北新区建设与交通局,江苏 南京 211816; 2.南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
HUANG Chengguo1 ZHU Zhengdong2 TANG Yijun2 LI Zhijun2
1. Construction and Transportation Bureau of the Jiangbei New Area, Nanjing 211816, China; 2. College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
曲线钢箱梁桥 步履式顶推 横向抗倾覆稳定性 轴线偏移 支点脱空
Keywords:
curved steel box girder bridge hydraulic-walking incremental launching transverse anti-overturning stability axis offset fulcrum emptying
分类号:
U448.4
文献标志码:
A
摘要:
曲线钢箱梁桥在步履式顶推过程中的横向倾覆稳定性控制至关重要。采用有限元方法及计算对可能影响到倾覆稳定性的因素,包括轴线偏移、支点脱空、支点纵横向间距、风荷载进行系统的分析。结果表明:中轴线偏移、支点的纵横向间距对结构的横向倾覆稳定性影响较大; 在顶推过程中应严格控制中轴线偏移量,尽量增大支点的横向间距,合理控制支点的纵向间距; 支点的脱空可能导致结构发生横向倾覆失稳,特别是外弧侧和边支点截面的脱空影响更大; 在顶推过程中应严格控制各支点顶推力,使支点均衡受力,共同工作; 当风荷载较小时,其对结构的倾覆稳定性影响较小。
Abstract:
It is crucial to control the transverse overturning stability of curved steel box girder bridge in the process of hydraulic-walking incremental launching. The factors which may affect the overturning stability, including axis deviation, separation of fulcrum, vertical and horizontal spacing of fulcrum, and wind load, was analyzed systematically by using the finite element method. The results showed that the displacement of the central axis and the vertical and horizontal spacing of the fulcrum had great influence on the transverse overturning stability of the structure. In the process of pushing, the deviation of the central axis should be strictly controlled. The horizontal distance of the fulcrum should be increased as much as possible and the longitudinal distance of the fulcrum should be reasonably controlled. The detachment of the fulcrum may lead to the transverse collapse of the structure, especially the outer arc side and side fulcrum section. In the process of pushing, the pushing force of each fulcrum should be strictly controlled so as to make it work together with balanced force. When the wind load was small, it had little effect on the overturning stability of the structure.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-12-02
基金项目:江苏省交通运输科技项目(2019Y18); 国家自然科学基金(51778288)
作者简介:黄成国(1981—),男,工程师,E-mail:591105180@qq.com; 李枝军(联系人),副教授,E-mail:lizhijun@njtech.edu.cn.
引用格式:黄成国,朱铮栋,唐益军,等.曲线钢箱梁桥步履式顶推施工横向倾覆稳定性影响因素的分析[J].南京工业大学学报(自然科学版),2020,42(3):399-404.
HUANG Chengguo, ZHU Zhengdong, TANG Yijun, et al. Analysis of factors influencing transverse overturning stability of curved steel box girder bridge by hydraulic-walking incremental launching construction[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(3):399-404..
更新日期/Last Update: 2020-05-31