基于逆有限元法的形状还原传感阵列及桥梁挠度监测试验

雷雨恒; 任亮; 李宏男; 尤润州; 魏易博

doi:10.6052/j.issn.1000-4750.2021.06.0465

基于逆有限元法的形状还原传感阵列及桥梁挠度监测试验

doi: 10.6052/j.issn.1000-4750.2021.06.0465

大连理工大学建设工程学部，辽宁，大连，116024

基金项目: 国家自然科学基金项目(52027811)；大连市高层次人才创新支持计划项目(2019RD01)

详细信息

作者简介:
雷雨恒(1997−)，男，辽宁人，硕士生，主要从事结构健康监测研究(E-mail: yuhenglei233@mail.dlut.edu.cn)

李宏男(1957−)，男，辽宁人，教授，博士，博导，主要从事结构健康监测研究(E-mail: hnli@dlut.edu.cn)

尤润州(1994−)，男，山西人，博士后，主要从事结构健康监测研究(E-mail: yourunzhou@mail.dlut.edu.cn)

魏易博(1995−)，男，辽宁人，硕士生，主要从事结构健康监测研究(E-mail: weiyibo1995@hotmail.com)

通讯作者:
任　亮(1979−)，男，山西人，教授，博士，博导，主要从事结构健康监测研究(E-mail: renliang@dlut.edu.cn)

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出版历程
- 收稿日期: 2021-06-20
- 修回日期: 2021-12-13
- 网络出版日期: 2021-12-17
- 刊出日期: 2022-11-01

SHAPE-SENSING ARRAY BASED ON INVERSE FINITE ELEMENT METHOD AND EXPERIMENT OF BRIDGE DEFLECTION MONITORING

Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China

摘要

摘要: 桥梁挠度是桥梁工程从设计阶段到运维阶段的重要控制指标，对其进行实时监测对桥梁工程的性能评估至关重要。该文提出一种形状还原传感阵列，该传感阵列基于逆有限元方法，仅通过有限点的实测应变数据即可实时、准确地还原出桥梁挠曲线。详细阐述了逆有限元法基本原理与形状还原传感阵列装置，将该项技术应用于混凝土自锚式悬索桥梁模型进行挠度监测试验研究，分别对桥梁模型进行静态加载与动态加载，通过水准仪与激光位移计对还原得到的挠曲线形状与精度进行验证。结果表明：形状还原传感阵列对于桥梁挠度的监测具有易于安装、数据准确、实时性好的优点，不仅可以准确还原出桥梁挠度，而且可以实时反演出桥梁挠曲线形状，能够有效地评估桥梁工程性能质量。
- 桥梁挠度 /
- 逆有限元法 /
- 形状还原传感阵列 /
- 结构监测 /
- 欧拉-伯努利梁
Abstract: Bridge deflection is an important indicator for the bridges from their design to their operation and maintenance stage. Real-time monitoring is crucial for the performance evaluation of bridges. A shape-sensing array based on the inverse finite element method (iFEM) is proposed. The deflection curve of a bridge can accurately be obtained by the strain data measured at limited points in real-time. Thusly, the basic principle of inverse finite element method and shape inversion sensing array device are described in detail. The technology is applied to the experimental study of deflection monitoring of a concrete self-anchored suspension bridge model. Static loading and dynamic loading were carried out on the bridge model, and the shape and the accuracy of the inverted deflection curve were verified by level gauge and laser displacement sensor. The results show that the shape-sensing array has the advantages of easy installation, good data accuracy and, excellent real-time performance for bridge deflection monitoring. This technology can accurately obtain bridge deflections and invert the curvature of deflection in real-time, which can effectively evaluate the performance and quality of a bridge.
- bridge deflection /
- iFEM /
- shape-sensing array /
- structural monitoring /
- Bernoulli-Euler beam

HTML全文

图 1 形状还原传感阵列设计

Figure 1. Design of shape-sensing array

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图 2 iBeam3单元

Figure 2. iBeam3 element

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图 3 有限元分析

Figure 3. Finite element analysis

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图 4 还原结果

Figure 4. Inversion results

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图 5 桥梁模型

Figure 5. Bridge model

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图 6 桥梁模型实拍

Figure 6. Photo of bridge model

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图 7 装置布设

Figure 7. Device layout

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图 8 装置实拍

Figure 8. Photo of device

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图 9 加载方式

Figure 9. Loading method

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图 10 水准仪测量

Figure 10. Level measurement

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图 11 形状还原

Figure 11. Shape inversion

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图 12 激光位移计测量

Figure 12. Laser displacement measurement

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图 13 单点挠度还原

Figure 13. Deflection inversion of single point

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图 14 动态加载实拍

Figure 14. Photo of dynamic loading

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图 15 桥梁模型跨中挠度还原

Figure 15. Inversion of mid span deflection of bridge model

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表 1 各个测点应变值

Table 1. Strain of measuring point

测点应变/(×10⁻⁵) 测点应变/(×10⁻⁵)

1 −0.74 7 3.09
2 1.98 8 −2.67
3 1.51 9 −3.05
4 −3.07 10 1.19
5 −2.76 11 1.87
6 3.07 12 0.37

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表 2 结果对比

Table 2. Comparison of results

支座还原位移/mm ANSYS结果/mm

固定支座 0.000 0
1号支座 0.203 0
2号支座 −5.139 −5
3号支座 0.296 0
4号支座 −5.133 −5
5号支座 0.183 0
6号支座 0.072 0

下载: 导出CSV

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基于逆有限元法的形状还原传感阵列及桥梁挠度监测试验

doi: 10.6052/j.issn.1000-4750.2021.06.0465

通讯作者:
任　亮(1979−)，男，山西人，教授，博士，博导，主要从事结构健康监测研究(E-mail: renliang@dlut.edu.cn)

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SHAPE-SENSING ARRAY BASED ON INVERSE FINITE ELEMENT METHOD AND EXPERIMENT OF BRIDGE DEFLECTION MONITORING

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目录

测点	应变/(×10⁻⁵)	测点	应变/(×10⁻⁵)
1	−0.74	7	3.09
2	1.98	8	−2.67
3	1.51	9	−3.05
4	−3.07	10	1.19
5	−2.76	11	1.87
6	3.07	12	0.37

支座	还原位移/mm	ANSYS结果/mm
固定支座	0.000	0
1号支座	0.203	0
2号支座	−5.139	−5
3号支座	0.296	0
4号支座	−5.133	−5
5号支座	0.183	0
6号支座	0.072	0

留言板

基于逆有限元法的形状还原传感阵列及桥梁挠度监测试验

doi: 10.6052/j.issn.1000-4750.2021.06.0465

通讯作者: 任 亮(1979−)，男，山西人，教授，博士，博导，主要从事结构健康监测研究(E-mail: renliang@dlut.edu.cn)

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出版历程

SHAPE-SENSING ARRAY BASED ON INVERSE FINITE ELEMENT METHOD AND EXPERIMENT OF BRIDGE DEFLECTION MONITORING

计量

出版历程

目录

通讯作者:
任　亮(1979−)，男，山西人，教授，博士，博导，主要从事结构健康监测研究(E-mail: renliang@dlut.edu.cn)