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交叉吊索对施工中悬索桥的静风稳定性影响

李翠娟,  李永乐,  叶华文,  强士中

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文章导航 > 西南交通大学学报  > 2017 >  30(4): 655-662.
李翠娟, 李永乐, 叶华文, 强士中. 交叉吊索对施工中悬索桥的静风稳定性影响[J]. 西南交通大学学报, 2017, 30(4): 655-662. doi: 10.3969/j.issn.0258-2724.2017.04.002
引用本文: 李翠娟, 李永乐, 叶华文, 强士中. 交叉吊索对施工中悬索桥的静风稳定性影响[J]. 西南交通大学学报, 2017, 30(4): 655-662. doi: 10.3969/j.issn.0258-2724.2017.04.002
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LI Cuijuan, LI Yongle, YE Huawen, QIANG Shizhong. Influence of Crossed Hangers on Aerostatic Stability of Suspension Bridge during Constructing[J]. Journal of Southwest Jiaotong University, 2017, 30(4): 655-662. doi: 10.3969/j.issn.0258-2724.2017.04.002
Citation: LI Cuijuan, LI Yongle, YE Huawen, QIANG Shizhong. Influence of Crossed Hangers on Aerostatic Stability of Suspension Bridge during Constructing[J]. Journal of Southwest Jiaotong University, 2017, 30(4): 655-662. doi: 10.3969/j.issn.0258-2724.2017.04.002
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交叉吊索对施工中悬索桥的静风稳定性影响

doi: 10.3969/j.issn.0258-2724.2017.04.002
基金项目: 

国家自然科学基金资助项目（51308466）

中央高校基本科研业务费专项资金资助项目（SWJTU12BR033，2682015CX084）

四川省教育厅资助项目（17ZA0390）

详细信息
    作者简介:

    李翠娟(1983—),女,讲师,博士,研究方向为大跨度桥梁结构行为,桥梁抗风以及新材料在桥梁工程中的应用,电话:13684048410,E-mail:darcc@163.com

Influence of Crossed Hangers on Aerostatic Stability of Suspension Bridge during Constructing

    摘要
  • 摘要: 为探明超大跨悬索桥在施工过程中的静风稳定性，采用三维非线性分析方法，对主跨3 500 m的超大跨CFRP （carbon fibre reinforced plastic）主缆悬索桥进行了施工阶段的静风稳定性分析，研究了3种交叉吊索对施工阶段静风性能和变形形态的影响.研究结果表明：随着加劲梁吊装逐步完成，结构静风稳定性不断降低，加劲梁合龙但尚未刚接阶段的静风稳定性最差；仅安装水平交叉吊索作用不大，竖向交叉吊索和综合交叉吊索可显著提高施工阶段的静风稳定性；加劲梁吊装完成率位于9.8%~60.6%时，安装综合交叉吊索可取得较好的抗风效果，其余施工阶段可只安装竖向交叉吊索.

     

    Abstract: In order to evaluate the aerostatic safety of super-large span suspension bridges, the 3D nonlinear finite element method was used to analyze the aerostatic stability of a super-large span suspension bridge with 3 500 m long main span and carbon fibre reinforced plastic (CFRP) cables, and the influence of three kinds of crossed hangers on the aerostatic performance and deformation shape of the suspension bridge during its construction were studied. The results show that as the stiffening girder is constructed step by step, the aerostatic stability becomes worse and worse, and finally reaches its minimum value when all of girder segments are erected but not rigidly connected. Only the horizontal crossed hanger has little effect on the aerostatic stability of suspension bridge during construction phase, but both the vertical crossed hanger and the composite crossed hanger made up of vertical and horizontal crossed hangers can improve the aerostatic stability significantly during construction. While the percentage of erected stiffening girders during construction is between 9.8% and 60.6%, the composite crossed hanger is more effective than other types of hangers in enhancing the aerostatic stability; however, using vertical crossed hangers alone is effective enough in other construction stages.

     

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出版历程
  • 收稿日期:  2016-06-05
  • 刊出日期:  2017-08-25

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