Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing
Terrestrial laser scanning technology has developed rapidly in recent years and has been used in various applications but mainly in the surveying of different buildings and historical monuments. The use for terrestrial laser scanning data for deformation monitoring has earlier been tested although c...
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2015-03-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/3412 |
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| _version_ | 1850215140751835136 |
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| author | Tarvo Mill Artu Ellmann Martti Kiisa Juhan Idnurm Siim Idnurm Milan Horemuz Andrus Aavik |
| author_facet | Tarvo Mill Artu Ellmann Martti Kiisa Juhan Idnurm Siim Idnurm Milan Horemuz Andrus Aavik |
| author_sort | Tarvo Mill |
| collection | DOAJ |
| description | Terrestrial laser scanning technology has developed rapidly in recent years and has been used in various applications but mainly in the surveying of different buildings and historical monuments. The use for terrestrial laser scanning data for deformation monitoring has earlier been tested although conventional surveying technologies are still more preferred. Since terrestrial laser scanners are capable of acquiring a large amount of highly detailed geometrical data from a surface it is of interest to study the metrological advantages of the terrestrial laser scanning technology for deformation monitoring of structures. The main intention of this study is to test the applicability of terrestrial laser scanning technology for determining range and spatial distribution of deformations during bridge load tests. The study presents results of deformation monitoring proceeded during a unique bridge load test. A special monitoring method-ology was developed and applied at a static load test of a reinforced concrete cantilever bridge built in 1953. Static loads with the max force of up to 1961 kN (200 t) were applied onto an area of 12 m² in the central part of one of the main beams; the collapse of the bridge was expected due to such an extreme load. Although the study identified occurrence of many cracks in the main beams and significant vertical deformations, both deflection (–4.2 cm) and rising (+2.5 cm), the bridge did not collapse. The terrestrial laser scanning monitoring results were verified by high-precision levelling. The study results confirmed that the TLS accuracy can reach ±2.8 mm at 95% confidence level. |
| format | Article |
| id | doaj-art-3c8d9a6429ba453e81624b492343cedf |
| institution | OA Journals |
| issn | 1822-427X 1822-4288 |
| language | English |
| publishDate | 2015-03-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj-art-3c8d9a6429ba453e81624b492343cedf2025-08-20T02:08:42ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882015-03-01101172710.3846/bjrbe.2015.031859Geodetic Monitoring of Bridge Deformations Occurring During Static Load TestingTarvo Mill0Artu Ellmann1Martti Kiisa2Juhan Idnurm3Siim Idnurm4Milan Horemuz5Andrus Aavik6Dept of Road Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDept of Road Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaFaculty of Construction, Tallinn University of Applied Sciences, Pärnu mnt 62, 10135 Tallinn, EstoniaDept of Road Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDept of Road Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDept of Geodesy and Geoinformatics, Royal Institute of Technology, Drottning Kristinas väg 30, 10044 Stockholm, SwedenDept of Road Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaTerrestrial laser scanning technology has developed rapidly in recent years and has been used in various applications but mainly in the surveying of different buildings and historical monuments. The use for terrestrial laser scanning data for deformation monitoring has earlier been tested although conventional surveying technologies are still more preferred. Since terrestrial laser scanners are capable of acquiring a large amount of highly detailed geometrical data from a surface it is of interest to study the metrological advantages of the terrestrial laser scanning technology for deformation monitoring of structures. The main intention of this study is to test the applicability of terrestrial laser scanning technology for determining range and spatial distribution of deformations during bridge load tests. The study presents results of deformation monitoring proceeded during a unique bridge load test. A special monitoring method-ology was developed and applied at a static load test of a reinforced concrete cantilever bridge built in 1953. Static loads with the max force of up to 1961 kN (200 t) were applied onto an area of 12 m² in the central part of one of the main beams; the collapse of the bridge was expected due to such an extreme load. Although the study identified occurrence of many cracks in the main beams and significant vertical deformations, both deflection (–4.2 cm) and rising (+2.5 cm), the bridge did not collapse. The terrestrial laser scanning monitoring results were verified by high-precision levelling. The study results confirmed that the TLS accuracy can reach ±2.8 mm at 95% confidence level.https://bjrbe-journals.rtu.lv/article/view/3412terrestrial laser scanningprecise levellingload testingmonitoring deformationscantilever beam |
| spellingShingle | Tarvo Mill Artu Ellmann Martti Kiisa Juhan Idnurm Siim Idnurm Milan Horemuz Andrus Aavik Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing The Baltic Journal of Road and Bridge Engineering terrestrial laser scanning precise levelling load testing monitoring deformations cantilever beam |
| title | Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing |
| title_full | Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing |
| title_fullStr | Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing |
| title_full_unstemmed | Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing |
| title_short | Geodetic Monitoring of Bridge Deformations Occurring During Static Load Testing |
| title_sort | geodetic monitoring of bridge deformations occurring during static load testing |
| topic | terrestrial laser scanning precise levelling load testing monitoring deformations cantilever beam |
| url | https://bjrbe-journals.rtu.lv/article/view/3412 |
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