Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges

Xiaoxing Xu; Yong Yuan; Wanran Zhao; Chen Liang; Shuqian Jin

doi:doi:10.11648/j.sd.20221003.22

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Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges

Xiaoxing Xu, Yong Yuan, Wanran Zhao, Chen Liang, Shuqian Jin

Published in Science Discovery (Volume 10, Issue 3)

Received: 31 May 2022 Accepted: Published: 1 June 2022

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Abstract

Laminated elastomer bearings are widely used in large bridges to adjust bridge deformation and ensure the safety of bridge structures. The stress and strain of the bridge bearing contain rich information, which can reflect the complex load conditions of the bridge structure. However, due to the large deformation range of the bridge bearing and the difficulty of stress acquisition, the structural health monitoring of the bridge bearing has not been carried out effectively. First, in this study, a novel flexible strain sensor based on conductive polymer composites was fabricated by the solution mixing method. The strain sensor is composed of thermoplastic polyurethane, multi-walled carbon nanotubes and silane coupling agent. The use of silane coupling agent enhances the interfacial bonding between multi-wall carbon nanotubes and thermoplastic polyurethane matrix, which enables the strain range of the strain sensor to reach 150%, which can cover the strain range of the bearing surface, and the gauge factor reaches 8.3. Secondly, this study designs a bearing for the cast laminated elastomer support that can monitor the internal stress of the shear deformation. The method is to set a raised steel block in the middle layer of the support, and place a raised steel block on the side of the steel block. Attach the pressure sensor, so that during the shearing process of the support, the elastomer will squeeze the sensor to output the shear stress signal. This work provides an experimental theoretical basis for the development of structural health monitoring of bridge bearings.

Published in	Science Discovery (Volume 10, Issue 3)
DOI	10.11648/j.sd.20221003.22
Page(s)	153-159
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Laminated Elastomeric Bearings, Stress, Strain, Sensors, Structural Health Monitoring

References

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[3]	Wong K Y. Research Project Brief of Development of Structural Prognosis Tools for Evaluation of Stonecutters Bridge under In-Service Condition[R]. Highway Department, the Government of the Hong Kong Special Administrative Region, 2009.
[4]	李星新.基于健康监测的钢桥面板疲劳寿命评估[D].长沙:中南大学, 2012。
[5]	董学武，张宇峰，徐宏等.苏通大桥结构健康监测及安全评价系统简介[J].桥梁建设, 2006, 4: 71-73。
[6]	余波,邱洪兴，王浩等.苏通大桥结构健康监测系统设计[J].地震工程与工程。
[7]	刘胜春.光纤光栅智能材料与桥梁健康监测系统研究[D].武汉理工大学, 2006。
[8]	廖威.基于健康监测系统的桥梁结构承载能力评估关键问题研究[D]. 2016。
[9]	俞姝颖,吴小兵,陈贵海,等.无线传感器网络在桥梁健康监测中的应用[J].软件学报, 2015, 26 (6): 1486-1498。
[10]	Yamada T, Hayamizu Y, Yamamoto Y, et al. A stretchable carbon nanotube strain sensor for human-motion detection [J]. Nature Nanotechnology, 2011, 6 (5): 296-301.
[11]	Li Xinming, Yang Tingting, Yang Yao, et al. Large-area ultrathin graphene films by single-step marangoni self-assembly for highly sensitive strain sensing application [J]. Advanced Functional Materials, 2016, 26 (9): 1322-1329.
[12]	Shi Ge, Zhao Zhiheng, Pai Jinghong, et al. Highly sensitive, wearable, durable strain sensors and stretchable conductors using graphene/silicon rubber composites [J]. Advanced Functional Materials, 2016, 26 (42): 7614-7625.
[13]	Lin Yong, Dong Xuchu, Liu Shuqi, et al. Graphene-elastomer composites with segregated nanostructured network for liquid and strain sensing application [J]. ACS Applied Materials & Interfaces, 2016, 8 (36): 24143-24151.
[14]	Tran Lyhuong, Kim Jooyong.A comparative study of the thermoplastic polyurethane/carbon nanotube and natural rubber/carbon nanotube composites according to their mechanical and electrical properties [J]. Fibers and Polymers, 2018, 19 (9): 1948-1955.
[15]	李树兵.采用摄像头检测技术普查桥梁支座质量问题[J].交通世界, 2010. 11 (11): 184-185。

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APA Style

Xiaoxing Xu, Yong Yuan, Wanran Zhao, Chen Liang, Shuqian Jin. (2022). Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges. Science Discovery, 10(3), 153-159. https://doi.org/10.11648/j.sd.20221003.22

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ACS Style

Xiaoxing Xu; Yong Yuan; Wanran Zhao; Chen Liang; Shuqian Jin. Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges. Sci. Discov. 2022, 10(3), 153-159. doi: 10.11648/j.sd.20221003.22

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AMA Style

Xiaoxing Xu, Yong Yuan, Wanran Zhao, Chen Liang, Shuqian Jin. Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges. Sci Discov. 2022;10(3):153-159. doi: 10.11648/j.sd.20221003.22

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@article{10.11648/j.sd.20221003.22,
  author = {Xiaoxing Xu and Yong Yuan and Wanran Zhao and Chen Liang and Shuqian Jin},
  title = {Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges},
  journal = {Science Discovery},
  volume = {10},
  number = {3},
  pages = {153-159},
  doi = {10.11648/j.sd.20221003.22},
  url = {https://doi.org/10.11648/j.sd.20221003.22},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20221003.22},
  abstract = {Laminated elastomer bearings are widely used in large bridges to adjust bridge deformation and ensure the safety of bridge structures. The stress and strain of the bridge bearing contain rich information, which can reflect the complex load conditions of the bridge structure. However, due to the large deformation range of the bridge bearing and the difficulty of stress acquisition, the structural health monitoring of the bridge bearing has not been carried out effectively. First, in this study, a novel flexible strain sensor based on conductive polymer composites was fabricated by the solution mixing method. The strain sensor is composed of thermoplastic polyurethane, multi-walled carbon nanotubes and silane coupling agent. The use of silane coupling agent enhances the interfacial bonding between multi-wall carbon nanotubes and thermoplastic polyurethane matrix, which enables the strain range of the strain sensor to reach 150%, which can cover the strain range of the bearing surface, and the gauge factor reaches 8.3. Secondly, this study designs a bearing for the cast laminated elastomer support that can monitor the internal stress of the shear deformation. The method is to set a raised steel block in the middle layer of the support, and place a raised steel block on the side of the steel block. Attach the pressure sensor, so that during the shearing process of the support, the elastomer will squeeze the sensor to output the shear stress signal. This work provides an experimental theoretical basis for the development of structural health monitoring of bridge bearings.},
 year = {2022}
}

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TY  - JOUR
T1  - Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges
AU  - Xiaoxing Xu
AU  - Yong Yuan
AU  - Wanran Zhao
AU  - Chen Liang
AU  - Shuqian Jin
Y1  - 2022/06/01
PY  - 2022
N1  - https://doi.org/10.11648/j.sd.20221003.22
DO  - 10.11648/j.sd.20221003.22
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 153
EP  - 159
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20221003.22
AB  - Laminated elastomer bearings are widely used in large bridges to adjust bridge deformation and ensure the safety of bridge structures. The stress and strain of the bridge bearing contain rich information, which can reflect the complex load conditions of the bridge structure. However, due to the large deformation range of the bridge bearing and the difficulty of stress acquisition, the structural health monitoring of the bridge bearing has not been carried out effectively. First, in this study, a novel flexible strain sensor based on conductive polymer composites was fabricated by the solution mixing method. The strain sensor is composed of thermoplastic polyurethane, multi-walled carbon nanotubes and silane coupling agent. The use of silane coupling agent enhances the interfacial bonding between multi-wall carbon nanotubes and thermoplastic polyurethane matrix, which enables the strain range of the strain sensor to reach 150%, which can cover the strain range of the bearing surface, and the gauge factor reaches 8.3. Secondly, this study designs a bearing for the cast laminated elastomer support that can monitor the internal stress of the shear deformation. The method is to set a raised steel block in the middle layer of the support, and place a raised steel block on the side of the steel block. Attach the pressure sensor, so that during the shearing process of the support, the elastomer will squeeze the sensor to output the shear stress signal. This work provides an experimental theoretical basis for the development of structural health monitoring of bridge bearings.
VL  - 10
IS  - 3
ER  -

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Author Information

Xiaoxing Xu

School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China
Yong Yuan

School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China
Wanran Zhao

School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China
Chen Liang

School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China
Shuqian Jin

School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, China

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APA Style

Xiaoxing Xu, Yong Yuan, Wanran Zhao, Chen Liang, Shuqian Jin. (2022). Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges. Science Discovery, 10(3), 153-159. https://doi.org/10.11648/j.sd.20221003.22

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ACS Style

Xiaoxing Xu; Yong Yuan; Wanran Zhao; Chen Liang; Shuqian Jin. Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges. Sci. Discov. 2022, 10(3), 153-159. doi: 10.11648/j.sd.20221003.22

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AMA Style

Xiaoxing Xu, Yong Yuan, Wanran Zhao, Chen Liang, Shuqian Jin. Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges. Sci Discov. 2022;10(3):153-159. doi: 10.11648/j.sd.20221003.22

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@article{10.11648/j.sd.20221003.22,
  author = {Xiaoxing Xu and Yong Yuan and Wanran Zhao and Chen Liang and Shuqian Jin},
  title = {Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges},
  journal = {Science Discovery},
  volume = {10},
  number = {3},
  pages = {153-159},
  doi = {10.11648/j.sd.20221003.22},
  url = {https://doi.org/10.11648/j.sd.20221003.22},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20221003.22},
  abstract = {Laminated elastomer bearings are widely used in large bridges to adjust bridge deformation and ensure the safety of bridge structures. The stress and strain of the bridge bearing contain rich information, which can reflect the complex load conditions of the bridge structure. However, due to the large deformation range of the bridge bearing and the difficulty of stress acquisition, the structural health monitoring of the bridge bearing has not been carried out effectively. First, in this study, a novel flexible strain sensor based on conductive polymer composites was fabricated by the solution mixing method. The strain sensor is composed of thermoplastic polyurethane, multi-walled carbon nanotubes and silane coupling agent. The use of silane coupling agent enhances the interfacial bonding between multi-wall carbon nanotubes and thermoplastic polyurethane matrix, which enables the strain range of the strain sensor to reach 150%, which can cover the strain range of the bearing surface, and the gauge factor reaches 8.3. Secondly, this study designs a bearing for the cast laminated elastomer support that can monitor the internal stress of the shear deformation. The method is to set a raised steel block in the middle layer of the support, and place a raised steel block on the side of the steel block. Attach the pressure sensor, so that during the shearing process of the support, the elastomer will squeeze the sensor to output the shear stress signal. This work provides an experimental theoretical basis for the development of structural health monitoring of bridge bearings.},
 year = {2022}
}

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TY  - JOUR
T1  - Study on Strain and Stress Monitoring of Seismic Isolation Bearings for Bridges
AU  - Xiaoxing Xu
AU  - Yong Yuan
AU  - Wanran Zhao
AU  - Chen Liang
AU  - Shuqian Jin
Y1  - 2022/06/01
PY  - 2022
N1  - https://doi.org/10.11648/j.sd.20221003.22
DO  - 10.11648/j.sd.20221003.22
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 153
EP  - 159
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20221003.22
AB  - Laminated elastomer bearings are widely used in large bridges to adjust bridge deformation and ensure the safety of bridge structures. The stress and strain of the bridge bearing contain rich information, which can reflect the complex load conditions of the bridge structure. However, due to the large deformation range of the bridge bearing and the difficulty of stress acquisition, the structural health monitoring of the bridge bearing has not been carried out effectively. First, in this study, a novel flexible strain sensor based on conductive polymer composites was fabricated by the solution mixing method. The strain sensor is composed of thermoplastic polyurethane, multi-walled carbon nanotubes and silane coupling agent. The use of silane coupling agent enhances the interfacial bonding between multi-wall carbon nanotubes and thermoplastic polyurethane matrix, which enables the strain range of the strain sensor to reach 150%, which can cover the strain range of the bearing surface, and the gauge factor reaches 8.3. Secondly, this study designs a bearing for the cast laminated elastomer support that can monitor the internal stress of the shear deformation. The method is to set a raised steel block in the middle layer of the support, and place a raised steel block on the side of the steel block. Attach the pressure sensor, so that during the shearing process of the support, the elastomer will squeeze the sensor to output the shear stress signal. This work provides an experimental theoretical basis for the development of structural health monitoring of bridge bearings.
VL  - 10
IS  - 3
ER  -

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