Reliability-Based Proof Load Factors for Assessment of Bridges
Advanced reliability assessment can be required when evaluating existing bridge structures through proof load testing. The target load of a proof load test typically requires input from resistance models; however, bridges with a low documentation level are often the most relevant for proof load test...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Buildings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-5309/13/4/1060 |
| _version_ | 1797606106749468672 |
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| author | Christian Overgaard Christensen Kenneth Dahl Schiøttz Damsgaard John Dalsgaard Sørensen Svend Engelund Per Goltermann Jacob Wittrup Schmidt |
| author_facet | Christian Overgaard Christensen Kenneth Dahl Schiøttz Damsgaard John Dalsgaard Sørensen Svend Engelund Per Goltermann Jacob Wittrup Schmidt |
| author_sort | Christian Overgaard Christensen |
| collection | DOAJ |
| description | Advanced reliability assessment can be required when evaluating existing bridge structures through proof load testing. The target load of a proof load test typically requires input from resistance models; however, bridges with a low documentation level are often the most relevant for proof load testing, and resistance models thus involve significant uncertainties. This paper presents a different approach to proof loading and target proof load, in which the resistance model is not included in the determination of this load. Instead, the target proof load is determined based on load models coupled to the desired target failure probability, thus ensuring sufficient safety of the existing bridge. The method is in line with the proposal for a new Eurocode on assessment of existing structures and is deemed to be superior to existing approaches. An essential assumption of the method is that monitoring systems can identify stop criteria before irreversible damage occurs. The approach was applied in a case study, where an OT-slab bridge with a span of 6.5 m was proof-load-tested and reclassified for capacity upgrading of a road stretch in Denmark. |
| first_indexed | 2024-03-11T05:10:37Z |
| format | Article |
| id | doaj.art-f4dd80317e9f496e8f803425336a42bc |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T05:10:37Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-f4dd80317e9f496e8f803425336a42bc2023-11-17T18:36:55ZengMDPI AGBuildings2075-53092023-04-01134106010.3390/buildings13041060Reliability-Based Proof Load Factors for Assessment of BridgesChristian Overgaard Christensen0Kenneth Dahl Schiøttz Damsgaard1John Dalsgaard Sørensen2Svend Engelund3Per Goltermann4Jacob Wittrup Schmidt5Department of the Built Environment, University of Aalborg, 9220 Aalborg, DenmarkDepartment of the Built Environment, University of Aalborg, 9220 Aalborg, DenmarkDepartment of the Built Environment, University of Aalborg, 9220 Aalborg, DenmarkTransport Infrastructure, COWI A/S, 9000 Aalborg, DenmarkDepartment of Civil and Mechanical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, DenmarkDepartment of the Built Environment, University of Aalborg, 9220 Aalborg, DenmarkAdvanced reliability assessment can be required when evaluating existing bridge structures through proof load testing. The target load of a proof load test typically requires input from resistance models; however, bridges with a low documentation level are often the most relevant for proof load testing, and resistance models thus involve significant uncertainties. This paper presents a different approach to proof loading and target proof load, in which the resistance model is not included in the determination of this load. Instead, the target proof load is determined based on load models coupled to the desired target failure probability, thus ensuring sufficient safety of the existing bridge. The method is in line with the proposal for a new Eurocode on assessment of existing structures and is deemed to be superior to existing approaches. An essential assumption of the method is that monitoring systems can identify stop criteria before irreversible damage occurs. The approach was applied in a case study, where an OT-slab bridge with a span of 6.5 m was proof-load-tested and reclassified for capacity upgrading of a road stretch in Denmark.https://www.mdpi.com/2075-5309/13/4/1060proof load testingreliability assessmentproof load factortarget loadexisting bridgesbridge assessment |
| spellingShingle | Christian Overgaard Christensen Kenneth Dahl Schiøttz Damsgaard John Dalsgaard Sørensen Svend Engelund Per Goltermann Jacob Wittrup Schmidt Reliability-Based Proof Load Factors for Assessment of Bridges Buildings proof load testing reliability assessment proof load factor target load existing bridges bridge assessment |
| title | Reliability-Based Proof Load Factors for Assessment of Bridges |
| title_full | Reliability-Based Proof Load Factors for Assessment of Bridges |
| title_fullStr | Reliability-Based Proof Load Factors for Assessment of Bridges |
| title_full_unstemmed | Reliability-Based Proof Load Factors for Assessment of Bridges |
| title_short | Reliability-Based Proof Load Factors for Assessment of Bridges |
| title_sort | reliability based proof load factors for assessment of bridges |
| topic | proof load testing reliability assessment proof load factor target load existing bridges bridge assessment |
| url | https://www.mdpi.com/2075-5309/13/4/1060 |
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