Research on Load-signal Response of Distributed Optical Fiber Based on Hamburg Rut Test
过震文1, 杨群2, 赖健聪2
1. Shanghai Municipal Planning and Design Institute Co., Ltd., Shanghai 200031, China;
2. The Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China
Research on Load-signal Response of Distributed Optical Fiber Based on Hamburg Rut Test
GUO Zhen-wen1, YANG Qun2, LAI Jian-cong2
1. Shanghai Municipal Planning and Design Institute Co., Ltd., Shanghai 200031, China;
2. The Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China
摘要In this paper, the distributed optical fiber sensing technology is introduced in response monitoring of asphalt pavement under loading. The corresponding immersion monitoring scheme is proposed. To study the change rule of optical fiber sensing signal in asphalt concrete at different loadings and temperatures, a distributed optical fiber sensing testing system is established. The system includes the light source, sensing element, asphalt concrete structure, a photoelectric detection module, and a data acquisition module. The encapsulated optical fiber sensor is embedded in the asphalt concrete rutting specimen, and the indoor Hamburg rutting test method is employed. Under different temperatures and different size loads, the rutting specimens are loaded with periodically moving rubber wheels to simulate actual asphalt road traffic loads. Taking the optical fiber signal sensitivity and signal strength as evaluation indicators, the acquired optical fiber signal is defined in two stages:no-load stage and loading stage. The quantitative relationship between fiber signal characteristics, load magnitude, and ambient temperature in two stages are studied. The results show that under the Hamburg rutting test, the fiber signal is steady, and information like the loading characteristics and period characteristic can be obtained from the fiber signal curve. Under 30℃, 45℃and 60℃, the fiber optic signal sensitivity and load magnitude are linearly correlated. Under the conditions of 45℃ and 60℃, the increasing speed of the fiber signal sensitivity with loading is larger than that at 30℃. Compared with high temperature (45-60℃), the fiber signal sensitivity value increases faster at low temperatures (30-45℃). The higher the temperature, the more dispersed the optical fiber signal sensitivity value distribution. The research results are of great significance to verify and improve the distributed optical fiber technology system in applications of road engineering.
Abstract：In this paper, the distributed optical fiber sensing technology is introduced in response monitoring of asphalt pavement under loading. The corresponding immersion monitoring scheme is proposed. To study the change rule of optical fiber sensing signal in asphalt concrete at different loadings and temperatures, a distributed optical fiber sensing testing system is established. The system includes the light source, sensing element, asphalt concrete structure, a photoelectric detection module, and a data acquisition module. The encapsulated optical fiber sensor is embedded in the asphalt concrete rutting specimen, and the indoor Hamburg rutting test method is employed. Under different temperatures and different size loads, the rutting specimens are loaded with periodically moving rubber wheels to simulate actual asphalt road traffic loads. Taking the optical fiber signal sensitivity and signal strength as evaluation indicators, the acquired optical fiber signal is defined in two stages:no-load stage and loading stage. The quantitative relationship between fiber signal characteristics, load magnitude, and ambient temperature in two stages are studied. The results show that under the Hamburg rutting test, the fiber signal is steady, and information like the loading characteristics and period characteristic can be obtained from the fiber signal curve. Under 30℃, 45℃and 60℃, the fiber optic signal sensitivity and load magnitude are linearly correlated. Under the conditions of 45℃ and 60℃, the increasing speed of the fiber signal sensitivity with loading is larger than that at 30℃. Compared with high temperature (45-60℃), the fiber signal sensitivity value increases faster at low temperatures (30-45℃). The higher the temperature, the more dispersed the optical fiber signal sensitivity value distribution. The research results are of great significance to verify and improve the distributed optical fiber technology system in applications of road engineering.
基金资助:Supported by the National Natural Science Foundation of China (No.51778482)
通讯作者:
GUO Zhen-wen
E-mail: guozw_sh@163.com
引用本文:
过震文, 杨群, 赖健聪. Research on Load-signal Response of Distributed Optical Fiber Based on Hamburg Rut Test[J]. Journal of Highway and Transportation Research and Development, 2021, 15(2): 1-7.
GUO Zhen-wen, YANG Qun, LAI Jian-cong. Research on Load-signal Response of Distributed Optical Fiber Based on Hamburg Rut Test. Journal of Highway and Transportation Research and Development, 2021, 15(2): 1-7.
[1] ZHU Yun-sheng, GUO Zhong-yin, WANG Jing. Creep Test and Research on Asphalt Mixture at High Temperature and Heavy Load[J]. Journal of Building Materials, 2008, 11(5):545-549. (in Chinese)
[2] TAO Xue-wen, ZHAO Shuang-wen, JIA Chun-fu. Method and Application of Highway Axle Survey Data Collection[J]. China Transportation Information, 2020(1):122-124. (in Chinese)
[3] DONG Ze-jiao, WEN Jia-yu, LI Sheng-long. Comparative Analysis of Calibration Methods for Fiber Bragg Grating Temperature Sensor Used in Asphalt Pavement[J]. Journal of Building Materials. 2014, 17(1):120-125. (in Chinese)
[4] WEI Hua, WANG Jin-song, SHANG Gang, et al. Research on Strain Monitoring of Pre-Built Distributed Sensing Optical Cables for Concrete Bridges[J]. Transportation Science & Technology, 2019(6):72-75. (in Chinese)
[5] ZHANG Jing,WEI Lian-yu,MA Shi-bin,et al. Field Test and Numerical Simulation of Dynamic Response of Semi-rigid Base Asphalt Pavement under Moving Vehicle Load. Journal of Highway and Transportation Research and Development, 2016,33(10):19-24.
[6] TAN Yi-qiu, DONG Ze-jiao, TIAN Geng-liang, et al. Evaluating Method of the Coordination Deformation between Asphalt Mixture and Fiber Bragg Grating Sensor[J]. Journal of Civil and Environmental Engineering, 2009, 31(2):100-104.
[7] QIAN Zhen-dong, HAN Guang-yi, HUANG Wei, et al. A Study on Crack Fatigue Propagation of Steel Deck Pavement Based on BOTDA[J]. China Civil Engineering Journal, 2009, 42(10):132-136.
[8] BAI Chun-gang, WANG Xi-di, YANG Meng. Research on Application of Fixed-point Fiber Optic Technology in Pipeline Deformation Monitoring[J]. Building Materials and Decoration, 2020(1):227-228. (in Chinese)
[9] MA Xiao-hui. Research on Expressway Dynamic Weighing System Based on Fiber Grating[J]. Technology & Market, 2017, 24(11):148. (in Chinese)
[10] DU Rong-yao, LIN You-gui. Study on the Applicable Scope of Hamburg Rutting and APA Rutting Tests[J]. Journal of China& Foreign Highway, 2019,39(5):237-242. (in Chinese)
[11] YE Zhong-tao, HU Jun-liang. Uplift Bearing Capacity Test Research of Steel Pipe Pile Based on Distributed Optical Fiber Strain Sensor[J]. Construction & Design for Engineering, 2019(16):47-48, 55.(in Chinese)
[12] SHE Yu-lai, ZHOU De-jian, CHEN Xiao-yong. Optimization Design of Bending Performance for Ultralow Loss Hole Assisted Fiber[J]. Infrared and Laser Engineering. 2019,48(9):185-191.(in Chinese)
[13] PENG Xing-ling, ZHANG Hua, LI Yu-long. The Research Advances of Macro Bending Fiber Based Sensors[J]. Optical Communication Technology,2012,36(11):38-41.(in Chinese)
[14] ZHANG Xiao-wei, LI Xu-hui, HU Guo-liang, et al. Research Status of Distributed Optical Fiber Sensing Technology Based on BOTDA in Monitoring Engineering[J]. Shanxi Architecture.2008,44(18):178-180.(in Chinese).
[15] CAO Shan-shan, GUO Chao-yang, WANG Zhen, et al. Structure Design and Bending Loss of a Novel Fiber for Low Temperature Environment[J]. Acta Photonica Sinica. 2019,48(11):195-201.(in Chinese)
[16] HU Xiao-xiao, JU Tao. Optical Fiber Connection Loss Measurement Scheme Based on Raman Effect. Electro-Optic Technology Application, 2019,34(01):53-56.(in Chinese)
[17] ZHAO H, WU D, ZENG M, et al. A Vibration-Based Vehicle Classification System using Distributed Optical Sensing Technology[J]. Transportation Research Record.2018, 1-12.
[18] ZHANG Ren, QIN Ren-jie, HE Wan-yu, et al. Test Study on High Temperature Stability of Asphalt Mixture[J]. Subgrade Engineering. 2019(4):138-143.(in Chinese)
2021, Vol. 15 
