Das Belastungsfahrzeug BELFA für die experimentelle Tragsicherheitsbewertung von Massivbrücken und Abwasserkanälen

Steffens, K.; Opitz, H.; Quade, J; Schwesinger, P.

doi:10.1002/bate.200102600

Cited by 10 publications

(5 citation statements)

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“…Using such vehicles, it was possible to apply loading representative for the special permit vehicles driving on Danish roads and, thus, accurately reflect the ax configurations of the Danish classification system [21]. The loading setup was quit lar to that of the BelFa loading vehicle [63,64], but BelFa usually operates at lowe Using such vehicles, it was possible to apply loading representative for the heavy special permit vehicles driving on Danish roads and, thus, accurately reflect the axle load configurations of the Danish classification system [21]. The loading setup was quite similar to that of the BelFa loading vehicle [63,64], but BelFa usually operates at lower load levels, and the increased availability of the standard transport vehicles must be considered a significant benefit.…”

Section: Loading With Special Transport Vehiclesmentioning

confidence: 99%

“…The loading setup was quit lar to that of the BelFa loading vehicle [63,64], but BelFa usually operates at lowe Using such vehicles, it was possible to apply loading representative for the heavy special permit vehicles driving on Danish roads and, thus, accurately reflect the axle load configurations of the Danish classification system [21]. The loading setup was quite similar to that of the BelFa loading vehicle [63,64], but BelFa usually operates at lower load levels, and the increased availability of the standard transport vehicles must be considered a significant benefit. The Danish classification system specifies that two adjacent vehicles should be applied [21], a standard vehicle A and a standard vehicle B.…”

Section: Loading With Special Transport Vehiclesmentioning

confidence: 99%

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Reliability-Based Proof Load Factors for Assessment of Bridges

et al. 2023

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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.

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Section: Loading With Special Transport Vehiclesmentioning

confidence: 99%

Section: Loading With Special Transport Vehiclesmentioning

confidence: 99%

Reliability-Based Proof Load Factors for Assessment of Bridges

et al. 2023

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“…In Denmark, a method to apply loading in two lanes is used, to represent the vehicles from national codes . In Germany, a special vehicle (BELFA -Belastungsfahrzeug) was developed, which can be used to apply large loads necessary for proof load testing (Hochschule Bremen -City University of Applied Sciences, 2018, Bretschneider et al, 2012, Steffens et al, 2001. In terms of instrumentation, the recent developments are also applicable to diagnostic load testing.…”

Section: Recent Developments In Proof Load Testingmentioning

confidence: 99%

Assessment of existing concrete bridges by load testing

Lantsoght¹

2022

Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability

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One of the methods for the assessment of existing bridges is to subject the bridge to a load test. What is still lacking is a reflection of these recent advances in the codes and guidelines used for load testing of bridges. Two approaches are being used to address this lack. The first approach attempts to answer fundamental questions with regard to bridge load testing, and in particular proof load testing of concrete bridges through research. The second approach is to coordinate efforts, and facilitate collaboration and exchange of ideas internationally through the creation of the IABMAS Technical Committee on Bridge Load Testing. It is expected that these efforts will lie at the basis of improved recommendations for the assessment of concrete bridges by load testing to be included in codes and guidelines and to serve the community of engineers faced with the increased task of assessing ageing infrastructure.

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“…Vlijmen Oost carries three lanes, De Beek originally carried two lanes but is restricted to one lane, and the Halvemaans Bridge and Zijlweg carry a single lane. Vlijmen Oost was tested with a loading truck (Steffens et al, 2001) whereas the other bridges were loaded with a system of a steel spreader beam, counterweights, and hydraulic jacks. The proof load tests on the Halvemaans Bridge and viaduct Zijlweg directly showed that these structures fulfill the code requirements.…”

Section: Field Testsmentioning

confidence: 99%

Stop Criteria for Flexure for Proof Load Testing of Reinforced Concrete Structures

Lantsoght

Yang

Veen

et al. 2019

Front. Built Environ.

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Existing bridges with large uncertainties can be assessed with a proof load test. In a proof load test, a load representative of the factored live load is applied to the bridge at the critical position. If the bridge can carry this load without distress, the proof load test shows experimentally that the bridge fulfills the requirements of the code. Because large loads are applied during proof load tests, the structure or element that is tested needs to be carefully monitored during the test. The monitored structural responses are interpreted in terms of stop criteria. Existing stop criteria for flexure in reinforced concrete can be extended with theoretical considerations. These proposed stop criteria are then verified with experimental results: reinforced concrete beams failing in flexure and tested in the laboratory, a collapse test on an existing reinforced concrete slab bridge that reached flexural distress, and the pilot proof load tests that were carried out in the Netherlands and in which no distress was observed. The tests in which failure was obtained are used to evaluate the margin of safety provided by the proposed stop criteria. The available pilot proof load tests are analyzed to see if the proposed stop criteria are not overly conservative. The result of this comparison is that the stop criteria are never exceeded. Therefore, the proposed stop criteria can be used for proof load tests for the failure mode of bending moment in reinforced concrete structures.

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Das Belastungsfahrzeug BELFA für die experimentelle Tragsicherheitsbewertung von Massivbrücken und Abwasserkanälen

Cited by 10 publications

References 0 publications

Reliability-Based Proof Load Factors for Assessment of Bridges

Reliability-Based Proof Load Factors for Assessment of Bridges

Assessment of existing concrete bridges by load testing

Stop Criteria for Flexure for Proof Load Testing of Reinforced Concrete Structures

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