| 磁通量传感器在体外索力检测中的应用 |
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| 引用本文： | 黄晔,吴琛. 磁通量传感器在体外索力检测中的应用[J]. 建材技术与应用, 2007, 0(10): 18-20 |
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| 作者姓名： | 黄晔 吴琛 |
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| 作者单位： | 江西省煤田地质局,江西,南昌,330001;江西省煤田地质局,江西,南昌,330001 |
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| 摘 要： | 结合工程实例,介绍了磁通量传感器在吉安赣江大桥V墩体外索检测中的应用.磁通量传感器可以对体外预应力索、悬索桥和斜拉桥的预应力索以及其他磁性材料结构进行无接触应力监控.由于钢结构本身可作为传感器,并且通过磁导率的变化来反映应力变化,磁通量传感器可以安全准确地测定索力.
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| 关 键 词： | 体外索 磁通量 索力 磁性传感器 |
| 文章编号： | 1009-9441（2007）10-0018-02 |
| 修稿时间： | 2007-09-16 |
Application of the Elasto -magnetic Sensor in External Steel Cable Stress Measurement |
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| HUANG Ye,WU Chen. Application of the Elasto -magnetic Sensor in External Steel Cable Stress Measurement[J]. Research & Application of Building Materials, 2007, 0(10): 18-20 |
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| Authors: | HUANG Ye WU Chen |
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| Affiliation: | JiangXi Agency of Coalfield Geology, Jiangxi,Nanchang, 330001, China |
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| Abstract: | In this study,combined with some cases in construction,the application of elasto-magnetic(EM) stress sensors in testing the external steel cables of V-shaped pier of Ganjiang River bridge in Ji'an are explained. the elasto-magnetic sensor can be used to make non-contact monitoring over the external pre-stressed steel cables pre-stressed tendons on the suspension and cable-stayed bridges,and the other ferromagnetic structures.As the steel structure itself can be used as the actual sensor and can reflect the changes of stress through the changes of the magnetic permeability,the EM sensor can determine the cables'actual stress reliably and correctly. |
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| Keywords: | external pre-stressed steel cable elasto-magnetic actual stress EM sensor |
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