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采用步进加载的桥梁刚度量化识别方法

牛艳伟,  郝景贤,  苏英平,  山尾敏孝,  黄平明

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文章导航 > 交通运输工程学报  > 2014 >  14(6): 10-16
牛艳伟, 郝景贤, 苏英平, 山尾敏孝, 黄平明. 采用步进加载的桥梁刚度量化识别方法[J]. 交通运输工程学报, 2014, 14(6): 10-16.
引用本文: 牛艳伟, 郝景贤, 苏英平, 山尾敏孝, 黄平明. 采用步进加载的桥梁刚度量化识别方法[J]. 交通运输工程学报, 2014, 14(6): 10-16.
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NIU Yan-wei, HAO Jing-xian, SU Ying-ping, YAMAO Toshitaka, HUANG Ping-ming. Rigidity quantitative identification method of bridge based on step-forward loading[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 10-16.
Citation: NIU Yan-wei, HAO Jing-xian, SU Ying-ping, YAMAO Toshitaka, HUANG Ping-ming. Rigidity quantitative identification method of bridge based on step-forward loading[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 10-16.
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采用步进加载的桥梁刚度量化识别方法

  • 1.

    长安大学 公路学院, 陕西 西安 710064

  • 2.

    山西省交通科学研究院 黄土地区公路建设与养护技术交通行业重点实验室, 山西 太原 030006

  • 3.

    中交公路规划设计院有限公司, 北京 100088

  • 4.

    西安市政设计研究院有限公司, 陕西 西安 710068

  • 5.

    熊本大学 自然科学研究科, 熊本县 熊本市 860-8555

基金项目: 

国家自然科学基金项目 51208056

黄土地区公路建设与养护技术交通行业重点实验室开放基金项目 KLTLR-Y12-7

中央高校基本科研业务费专项资金项目 CHD2011JC173

详细信息
    作者简介:

    牛艳伟(1981-), 男, 山西定襄人, 长安大学讲师, 工学博士, 从事混凝土桥梁结构性能研究

  • 中图分类号: U441.2

Rigidity quantitative identification method of bridge based on step-forward loading

  • 1.

    School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    Shanxi Transportation ResearchInstitute, Key Laboratory of Highway Construction and Maintenance Technology in Loess Region of Ministry of Transport, Taiyuan 030006, Shanxi, China

  • 3.

    CCCC Highway Consultants Co., Ltd., Beijing 100088, China

  • 4.

    Xi'an Municipal Engineering Design and Research Institute Co., Ltd., Xi'an 710068, Shaanxi, China

  • 5.

    Graduate School of Science and Technology, 860-8555, Kumamoto, Japan

More Information

    摘要
  • 摘要: 针对桥梁刚度识别问题, 在常规桥梁荷载试验的基础上, 提出一种将试验加载车沿桥梁纵向逐步前进加载进行桥梁刚度量化识别的方法。引入刚度影响因子矩阵, 采用步进加载及有限元模型分别建立实测挠度变化矩阵和计算挠度变化矩阵, 并建立控制偏差逼近水平从而对刚度影响因子进行识别的方法及流程。以一座系杆拱桥为例, 验证了单一区域及多区域损伤的识别准确性。试验结果表明: 拱脚外区域识别精度可达到6.6%;采用步进加载方法可以对混凝土桥梁的刚度进行定位与量化识别; 采用多项式拟合对测量结果进行修正后, 可提高识别精度, 逼近水平提高18%。

     

    Abstract: Aiming at the rigidity identification of bridge, based on general bridge loading test, a step-forward loading method was proposed for bridge rigidity quantitative identification.Rigidity effect factor matrix was introduced, measured deflection variation matrix and calculated deflection variation matrix were established by step-forward loading and finite element model respectively, then the deviation was controlled to get convergence to identify rigidity effect factor, and related analysis flow was illustrated.Based on a project of tie-arch bridge, the identification accuracies of single zone damage and multi-zone damage of bridge were verified.Test result shows that the accuracy of bridge identification is 6.6% except the zones near arch feet.The rigidity of concrete bridge can be located and quantitatively identified based on step-forward loading method.Using polynomial fitting to correct the measured data can improve the identification accuracy, and the convergence level increases by 18%.

     

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  • 图  1  长兴港大桥立面及步进加载位置

    Figure  1.  Elevation and step-forward loading positions of Changxinggang Bridge

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    图  2  桥梁步进加载刚度识别流程

    Figure  2.  Bridge rigidity identification flow based on step-forward loading

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    图  3  长兴港大桥与步进加载横向位置

    Figure  3.  Changxinggang Bridge and step-forward loading transverse location

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    图  4  步进加载实测线形

    Figure  4.  Measured deflections under step-forward loading

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    图  5  有限元模型

    Figure  5.  Finite element model

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    图  6  识别收敛逼近过程

    Figure  6.  Convergence approximation process of identification

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    图  7  识别方法验证

    Figure  7.  Verification of identification method

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    图  8  长兴港大桥刚度识别结果

    Figure  8.  Rigidity identification result of Changxinggang Bridge

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  • 收稿日期:  2014-06-12
  • 刊出日期:  2014-12-25

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