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Lantsoght, E.O.L. (author), Yang, Y. (author), van der Veen, C. (author)Load testing and in some cases failure (or collapse) testing of bridges is a method to learn more about the behaviour of full-scale bridges in site conditions. Since such experiments, especially failure tests, are expensive, an extensive preparation of these tests is important. This paper addresses the question of when a bridge is a good...journal article 2022
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Koekkoek, Rutger (author), Sliedrecht, Henk (author)In The Netherlands, existing slab-between-girder bridges with prestressed girders and thin transversely prestressed concrete decks require assessment. The punching capacity was studied in a previous series of experiments, showing a higher capacity thanks to compressive membrane action in the deck. Then, concerns were raised with regard to...conference paper 2021
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Zarate Garnica, G.I. (author), Zhang, F. (author), Yang, Y. (author), van der Veen, C. (author), Lantsoght, E.O.L. (author), Naaktgeboren, M. (author), Fennis, S.A.A.M. (author)Proof load testing can be an interesting method to assess existing bridges for which analytical methods are unable to provide an accurate assessment. In a proof load test, a load representative of the factored live load is applied to the bridge. If the bridge can carry this load without distress, the proof load test is success-ful, and the...conference paper 2021
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Lantsoght, E.O.L. (author), Hordijk, D.A. (author), Koekkoek, R.T. (author), van der Veen, C. (author)This chapter describes the proof load testing of viaduct Zijlweg at a position that is critical for bending moment and at a position that is critical for shear. The viaduct Zijlweg has cracking caused by alkali-silica reaction, and the effect of material degradation on the capacity is uncertain. Therefore, the assessment of this viaduct was...book chapter 2019
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Lantsoght, E.O.L. (author), Yang, Y. (author), van der Veen, C. (author), Hordijk, D.A. (author), de Boer, A (author)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...journal article 2019
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Koekkoek, Rutger (author), Sliedrecht, Henk (author)Previous research showed that the capacity of existing slab-between-girder bridges is larger than expected based on the punching shear capacity prescribed by the governing codes, as a result of compressive membrane action. A first series of fatigue tests confirmed that compressive membrane action also acts under cycles of loading. However, a...journal article 2019
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Lantsoght, E.O.L. (author), Koekkoek, Rutger (author), van der Veen, C. (author), Sliedrecht, Henk (author)In the Netherlands, the assessment of existing prestressed concrete slab-between-girder bridges has revealed that the thin, transversely prestressed slabs may be critical for static and fatigue punching when evaluated using the recently introduced Eurocodes. On the other hand, compressive membrane action increases the capacity of these slabs,...journal article 2019
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Koekkoek, Rutger (author), Sliedrecht, Henk (author)In the Netherlands, slab-between-girder bridges with prestressed girders and transversely prestressed decks in between the girders require assessment. Static testing showed that compressive membrane action increases the capacity of these structures and that the decks fail in punching shear. The next question is if compressive membrane action...journal article 2019
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Lantsoght, E.O.L. (author), De Boer, Ane (author), van der Veen, C. (author), Hordijk, D.A. (author)Proof load testing of existing reinforced concrete bridges is becoming increasingly important as the current bridge stock is aging. In a proof load test, a load that corresponds to the factored live load is applied to a bridge structure, to directly demonstrate that a bridge fulfills the code requirements. To optimize the procedures used in...journal article 2019
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Lantsoght, E.O.L. (author), van der Veen, C. (author), De Boer, Ane (author), van der Ham, Herbert (author)In 1997, the Second Stichtse Bridge was built in the Netherlands using the balanced cantilever method. The use of high-strength concrete was proposed. At that time, the long-term behaviour of this material was not known, and no code provisions were applicable. Therefore, it was proposed to monitor the material behaviour and the deflections of...journal article 2018
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Ensink, S.W.H. (author), van der Veen, C. (author), Hordijk, D.A. (author), Lantsoght, E.O.L. (author), van der Ham, Herbert (author), de Boer, A. (author)In the Netherlands, approximately 150 prestressed T-beam bridges with cast-in-between decks and mainly built in the sixties are still in service. Upon assessment, the prestressed beams often do not fulfil the design codes requirements, whereas upon inspection, they show no signs of distress. For the assessment, additional load transfer...conference paper 2018
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Lantsoght, E.O.L. (author), Yang, Y. (author), van der Veen, C. (author), Hordijk, D.A. (author), De Boer, Ane (author)As the existing bridge stock is aging, improved assessment methods such as proof load testing become increasingly important. Proof load testing involves large loads, and as such the risk for the structure and personnel can be significant. To capture the structural response, extensive measurements are applied to proof load tests. Stop criteria,...conference paper 2018
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Lantsoght, E.O.L. (author), van der Veen, C. (author), de Boer, A (author)The loads that are used for the assessment of existing reinforced concrete slab bridges are the self-weight, superimposed loads, and distributed and concentrated live loads. As such, the shear capacity of reinforced concrete slabs under a combination of distributed and concentrated live loads is a topic of practical relevance. For slabs...journal article 2017
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Lantsoght, E.O.L. (author), van der Veen, C. (author), de Boer, A. (author)Proof loading of existing bridges is an option to study the capacity when crucial information about the structure is lacking. To define the loading criteria for proof load testing, a review of the literature has been made, finite element models of existing viaducts have been made, and on these viaducts, proof loading tests have been carried out....conference paper 2017
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Lantsoght, E.O.L. (author), van der Veen, C. (author), de Boer, A. (author)Most methods for the design and analysis of reinforced concrete slabs for punching are based on experiments on slab-column connections, reflecting the situation in building slabs. Slab-column connections with unbalanced<br/>moments have also been studied in the past. Experiments indicate that the accuracy of models for asymmetrically loaded...conference paper 2017
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Lantsoght, E.O.L. (author), Yang, Y. (author), van der Veen, C. (author), de Boer, A. (author), Hordijk, D.A. (author)Loading protocols and acceptance criteria are available in the literature for load tests on buildings. For bridges, proof load tests are interesting when crucial information about the structure is missing, or when the uncertainties about the structural response are large. The acceptance criteria can then be applied to evaluate if further loading...journal article 2017
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Lantsoght, E.O.L. (author), de Boer, A. (author), van der Veen, C. (author)Existing reinforced concrete solid slab bridges in the Netherlands are re-assessed for shear based on a Unity Check: the ratio of the shear stress caused by the applied loads to the shear capacity of the concrete cross-section. The governing shear stress resulting from the self-weight, weight of the wearing surface, distributed and concentrated...journal article 2017
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Lantsoght, E.O.L. (author), van der Veen, C. (author), de Boer, A. (author), Hordijk, D.A. (author)Proof load testing is part of the engineering practice, and can be particularly useful for the rating of existing bridges. This paper addresses how reliability-based concepts can be used in combination with proof load testing, and discusses how this approach differs from the current practice for proof load testing. Whereas the calculation...journal article 2017
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Lantsoght, E.O.L. (author), van der Veen, C. (author), de Boer, A. (author), Hordijk, D.A. (author)Load testing of bridges is a practice that is as old as their construction. In the past, load testing gave the traveling public a feeling that a newly opened bridge is safe. Nowadays, the bridge stock in many countries is aging, and load testing is used for the assessment of existing bridges. This paper aims at giving an overview of the current...journal article 2017
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Hordijk, D.A. (author), de Boer, A. (author)As the bridge stock in the Netherlands and Europe is ageing, various methods to analyze existing bridges are being studied. Proof load testing of bridges is an option to experimentally demonstrate that a given bridge can carry the prescribed live loads. Based on extensive research on proof load testing of reinforced concrete slab bridges carried...journal article 2017