Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System
A method is presented of measuring a bridge’s characteristic allowance for dynamic interaction in the form of Assessment Dynamic Ratio. Using a Bridge Weigh-in-Motion system, measurements were taken at a bridge in Slovenia over 58 days. From the total observed traffic population, 5-axle trucks were...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2013-12-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/3581 |
| _version_ | 1826908143880241152 |
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| author | Eugene J. OBrien Arturo González Jason Dowling Aleš Žnidarič |
| author_facet | Eugene J. OBrien Arturo González Jason Dowling Aleš Žnidarič |
| author_sort | Eugene J. OBrien |
| collection | DOAJ |
| description | A method is presented of measuring a bridge’s characteristic allowance for dynamic interaction in the form of Assessment Dynamic Ratio. Using a Bridge Weigh-in-Motion system, measurements were taken at a bridge in Slovenia over 58 days. From the total observed traffic population, 5-axle trucks were extracted and studied. The Bridge Weigh-in-Motion system inferred the static weights of the trucks, giving each measured event’s dynamic increment of load. Theoretical simulations were carried out using a 3-dimensional vehicle model coupled with a bridge plate model, simulating a traffic population similar to the population measured at the site. These theoretical simulations varied those properties of the 5-axle fleet that influence the dynamic response; simulating multiple sets of total (dynamic + static) responses for a single measured static strain response. Extrapolating the results of these theoretical simulations to a 50-year Assessment Dynamic Ratio gives similar results to those obtained by extrapolating the data measured using the Bridge Weigh-in-Motion system. A study of the effect of Bridge Weigh-in-Motion system errors on the predictions of Assessment Dynamic Ratio is conducted, identifying a trend in the Bridge Weigh-in-Motion calculations of maximum static response. The result of this bias is in turn quantified in the context of predicting characteristic maximum total load effect. |
| first_indexed | 2024-12-20T15:32:09Z |
| format | Article |
| id | doaj.art-b52b1f2293c1447fbf93fe2b7670c38f |
| institution | Directory Open Access Journal |
| issn | 1822-427X 1822-4288 |
| language | English |
| last_indexed | 2025-02-17T09:17:59Z |
| publishDate | 2013-12-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj.art-b52b1f2293c1447fbf93fe2b7670c38f2025-01-02T13:23:00ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882013-12-018426327010.3846/bjrbe.2013.341996Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion SystemEugene J. OBrien0Arturo González1Jason Dowling2Aleš Žnidarič3School of Civil, Structural and Environmental Engineering, University College Dublin, Belfield, Dublin 4, IrelandSchool of Civil, Structural and Environmental Engineering, University College Dublin, Belfield, Dublin 4, IrelandDept of Civil Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, CanadaSlovenian National Building and Civil Engineering Institute, ZAG, Dimičeva 12, 1000 Ljubljana, SloveniaA method is presented of measuring a bridge’s characteristic allowance for dynamic interaction in the form of Assessment Dynamic Ratio. Using a Bridge Weigh-in-Motion system, measurements were taken at a bridge in Slovenia over 58 days. From the total observed traffic population, 5-axle trucks were extracted and studied. The Bridge Weigh-in-Motion system inferred the static weights of the trucks, giving each measured event’s dynamic increment of load. Theoretical simulations were carried out using a 3-dimensional vehicle model coupled with a bridge plate model, simulating a traffic population similar to the population measured at the site. These theoretical simulations varied those properties of the 5-axle fleet that influence the dynamic response; simulating multiple sets of total (dynamic + static) responses for a single measured static strain response. Extrapolating the results of these theoretical simulations to a 50-year Assessment Dynamic Ratio gives similar results to those obtained by extrapolating the data measured using the Bridge Weigh-in-Motion system. A study of the effect of Bridge Weigh-in-Motion system errors on the predictions of Assessment Dynamic Ratio is conducted, identifying a trend in the Bridge Weigh-in-Motion calculations of maximum static response. The result of this bias is in turn quantified in the context of predicting characteristic maximum total load effect.https://bjrbe-journals.rtu.lv/article/view/3581bridgedynamicsassessment dynamic ratiosoft load testingvehicle bridge interactionweigh-in-motion (wim) |
| spellingShingle | Eugene J. OBrien Arturo González Jason Dowling Aleš Žnidarič Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System The Baltic Journal of Road and Bridge Engineering bridge dynamics assessment dynamic ratio soft load testing vehicle bridge interaction weigh-in-motion (wim) |
| title | Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System |
| title_full | Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System |
| title_fullStr | Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System |
| title_full_unstemmed | Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System |
| title_short | Direct Measurement of Dynamics in Road Bridges Using a Bridge Weigh-In-Motion System |
| title_sort | direct measurement of dynamics in road bridges using a bridge weigh in motion system |
| topic | bridge dynamics assessment dynamic ratio soft load testing vehicle bridge interaction weigh-in-motion (wim) |
| url | https://bjrbe-journals.rtu.lv/article/view/3581 |
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