Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors
Glass fiber-reinforced polymer (GFRP) bolts have been widely used in some applications of grouted anchors because of the advantages of better resistance to corrosion, high strength-to-weight ratio, low electromagnetic properties, and so on. This study presents a field test to assess the feasibility...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/19/7/1507 |
| _version_ | 1797999877115871232 |
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| author | Hai-Lei Kou Wang Li Wang-Chun Zhang Yuan Zhou Xiao-Long Zhou |
| author_facet | Hai-Lei Kou Wang Li Wang-Chun Zhang Yuan Zhou Xiao-Long Zhou |
| author_sort | Hai-Lei Kou |
| collection | DOAJ |
| description | Glass fiber-reinforced polymer (GFRP) bolts have been widely used in some applications of grouted anchors because of the advantages of better resistance to corrosion, high strength-to-weight ratio, low electromagnetic properties, and so on. This study presents a field test to assess the feasibility of fiber Bragg grating (FBG) sensors in monitoring the stress profile of GFRP anchors during pulling test. Two GFRP anchors were fully instrumented with FBG sensors and then installed into the ground using a drilling and grouting method. To measure the stress profile along test anchors, seven bare FBG sensors were arranged in a single optical fiber and then embedded in the middle of GFRP bolts in the process of extrusion molding. The procedure for embedding bare FBG sensors into GFRP bolts is introduced first. Then, the axial forces and shear stresses that were calculated from the measurements of the FBG sensors are discussed. The field test results indicate that the embedded FBG technology was feasible to monitor the stress state of GFRP anchors during pulling. |
| first_indexed | 2024-04-11T11:10:30Z |
| format | Article |
| id | doaj.art-4b9e1b6d9741476898821da5ad302857 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T11:10:30Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4b9e1b6d9741476898821da5ad3028572022-12-22T04:27:28ZengMDPI AGSensors1424-82202019-03-01197150710.3390/s19071507s19071507Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating SensorsHai-Lei Kou0Wang Li1Wang-Chun Zhang2Yuan Zhou3Xiao-Long Zhou4College of Engineering, Ocean University of China, Qingdao 266100, ChinaCollege of Engineering, Ocean University of China, Qingdao 266100, ChinaSchool of Architecture and Civil Engineering, Weifang University of Science and Technology, Weifang 262700, ChinaCollege of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, ChinaConstruction Engineering College, Qingdao Agriculture University, Qingdao 266109, ChinaGlass fiber-reinforced polymer (GFRP) bolts have been widely used in some applications of grouted anchors because of the advantages of better resistance to corrosion, high strength-to-weight ratio, low electromagnetic properties, and so on. This study presents a field test to assess the feasibility of fiber Bragg grating (FBG) sensors in monitoring the stress profile of GFRP anchors during pulling test. Two GFRP anchors were fully instrumented with FBG sensors and then installed into the ground using a drilling and grouting method. To measure the stress profile along test anchors, seven bare FBG sensors were arranged in a single optical fiber and then embedded in the middle of GFRP bolts in the process of extrusion molding. The procedure for embedding bare FBG sensors into GFRP bolts is introduced first. Then, the axial forces and shear stresses that were calculated from the measurements of the FBG sensors are discussed. The field test results indicate that the embedded FBG technology was feasible to monitor the stress state of GFRP anchors during pulling.https://www.mdpi.com/1424-8220/19/7/1507glass fiber-reinforced polymer (GFRP) anchorfiber bragg grating (FBG) technologyfield testaxial forceshear stress |
| spellingShingle | Hai-Lei Kou Wang Li Wang-Chun Zhang Yuan Zhou Xiao-Long Zhou Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors Sensors glass fiber-reinforced polymer (GFRP) anchor fiber bragg grating (FBG) technology field test axial force shear stress |
| title | Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors |
| title_full | Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors |
| title_fullStr | Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors |
| title_full_unstemmed | Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors |
| title_short | Stress Monitoring on GFRP Anchors Based on Fiber Bragg Grating Sensors |
| title_sort | stress monitoring on gfrp anchors based on fiber bragg grating sensors |
| topic | glass fiber-reinforced polymer (GFRP) anchor fiber bragg grating (FBG) technology field test axial force shear stress |
| url | https://www.mdpi.com/1424-8220/19/7/1507 |
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