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de Sousa, Alex Micael Dantas (author), Lantsoght, E.O.L. (author), Debs, Mounir Khalil El (author)Reinforced concrete one-way slabs under concentrated loads can develop different shear failure mechanisms: as wide beams in one-way shear, punching shear around the load or a mixed mode between them. Until now, most publications presented recommendations to assess the shear capacity considering only the one-way shear failure mechanism. This...journal article 2023
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Dantas de Sousaa, Alex Micael (author), Lantsoght, E.O.L. (author), de Lima Araújo, Daniel (author), Pereira Pradoe, Lisiane (author), Debs, Mounir Khalil El (author)This study describes a set of recommendations to improve the precision of shear and punching shear capacity predictions for one-way slabs under concentrated loads, regardless of the governing failure mechanism, using the ABNT NBR 6118:2014 code provisions. For this purpose, a database of 143 test results was developed, including one-way slabs...journal article 2023
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de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphaël D.J.M. (author), Fennis, Sonja A.A.M. (author)In the evaluation of existing bridges and viaducts, relying solely on a desk study is often inadequate for determining their structural reliability. Performing a proof load test provides valuable field data that offers detailed information about the structural integrity. However, the relation between the magnitude of the load and the...journal article 2023
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Lantsoght, E.O.L. (author)One of the barriers to implementation of steel fiber reinforced concrete (SFRC) into structural applications is the lack of understanding of the shear behaviour of SFRC members. This paper proposes a theoretical model for the shear capacity of SFRC members with mild steel reinforcement based on the shear-carrying mechanisms and sectional...journal article 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), El Debs, Mounir K. (author)One-way slabs under concentrated loads may fail by one-way shear, two-way shear, flexure, or a combination of these modes. This paper reviews shear and punching shear-failure mechanisms of one-way slabs under concentrated loads tested from the literature and investigates the accuracy of different approaches to predict the ultimate capacity...journal article 2023
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de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphaël D.J.M. (author), Naaktgeboren, Marius (author)Because of the aging of infrastructure, methods are explored by which the reliability of existing bridges and viaducts can be assessed. In cases in which limited information of the structure is available or its condition is of concern, proof load testing may be used to demonstrate sufficient live load carrying capacity. Proof load tests in...journal article 2023
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de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphael D.J.M. (author), Naaktgeboren, Marius (author)Due to the aging of infrastructure, methods are explored by which the reliability of existing bridges and viaducts can be assessed. In case limited information of the structure is available or its condition is of concern, proof load testing may be used to demonstrate sufficient load-carrying capacity. Proof load tests in the USA are typically...conference paper 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), El Debs, Mounir K. (author)One-way slabs under concentrated loads may fail by one-way shear such as wide beams, punching shear, flexure, or by combining two or more of these mechanisms. Nevertheless, most publications have only addressed shear and punching failures without flexural reinforcement yielding. This study investigates the ultimate shear capacity of one-way...journal article 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), Setiawan, Andri (author), El Debs, Mounir K. (author)One-way slabs under concentrated loads may fail by one-way shear, punching, flexure or a mixed-mode between them. This study examines the benefits of using Linear Elastic Finite Element Analyses (LEFEA) combined with analytical expressions to predict the shear and punching capacities of such slabs. Besides, the determination of the most...conference paper 2023
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Lantsoght, E.O.L. (author), Ospina, Carlos E. (author), Alexander, Scott D.B. (author)In design, the sectional depth of reinforced concrete spread footings is usually governed by design code provisions for punching shear, which are derived primarily from experiments on slab-column connections. Previous experiments have shown that the punching behavior of concentrically loaded spread footings differs from that of slab-column...conference paper 2023
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de Sousa, Alex M.D. (author), Lantsoght, E.O.L. (author), Genikomsou, Aikaterini S. (author), Prado, Lisiane P. (author), El Debs, Mounir K. (author)Several studies investigated the precision of non-linear finite element analyses (NLFEA) to predict the shear capacity of beams or the punching capacity of slab-column connections. However, in the literature, there is little discussion regarding the results of NLFEA to predict the ultimate capacity and failure mechanism of slabs susceptible...journal article 2023
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Lantsoght, E.O.L. (author)As the existing bridge stock is aging, the task of assessing these bridges becomes increasingly important. One of the assessment methods for existing bridges is load testing. Improvements in the field of diagnostic load testing are related to the use of numerical models. Improvements in the field of proof load testing focus on the safety of...journal article 2023
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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)The doctoral defense is an important step towards obtaining the doctoral degree, and preparation is necessary. In this work, I explore the relation between the way in which a doctoral candidate prepares for the defense and two important aspects of the defense: the outcome of the defense, and the student perception during and after the defense. I...journal article 2022
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Qian, Z. (author), Lantsoght, E.O.L. (author), Lukovic, M. (author)The increasing demand for sustainable development in engineering practice has triggered researchers to explore solutions to reduce the CO2 footprint caused by ordinary Portland cement (OPC) production. Alkali-activated concrete (AAC), made of by-products using alkali activation, is of great potential as a promising alternative to conventional...conference paper 2022
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Castellanos-Toro, Sebastián (author), Millán, Diana (author), Ortiz, Albert R. (author), Marulanda, Johannio (author), Thomson, Peter (author), Lantsoght, E.O.L. (author)In this study, a prestressed concrete girder bridge without plans and with severe levels of deterioration, located in Cali, Colombia, was load-tested to quantify, experimentally, its live-load behavior. The bridge consists of seven prestressed I-girders covered with a reinforced concrete deck, and four diaphragm beams. A geometric survey was...journal article 2022
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Andrade Borges, E.A. (author), Lantsoght, E.O.L. (author), Castellanos-Toro, Sebastián (author), Casas, Johannio Marulanda (author)Progressive deterioration is a problem that affects road infrastructure, especially bridges. This requires the development of methods to determine its influence on structural behavior, one of them being load testing. Within load testing, finite element analysis (FEA) models are used as part of the preparation process. This study focused on the...journal article 2022
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Lantsoght, E.O.L. (author), Yang, Y. (author), Hendriks, M.A.N. (author)Om de vele bestaande betonnen bruggen – die de komende tijd het einde van hun beoogde levensduur bereiken – te beoordelen, is het belangrijk een aanpak met verschillende niveaus van beoordelen te gebruiken. Waar een handberekening niet volstaat, kunnen geavanceerde modellen, meetgegevens, belastingproeven, monitoren, inzichten van...journal article 2022
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Lantsoght, E.O.L. (author)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...conference paper 2022
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Mustafa, S. (author), Lantsoght, E.O.L. (author), Yang, Y. (author), Sliedrecht, Henk (author)The safety of existing slab-between-girder bridges is subject to discussion in the Netherlands. Current design codes are conservative for shear-critical girders, and nonlinear finite element analysis is considered a more accurate assessment method. This paper investigates if the Dutch guidelines for nonlinear finite element analysis, which were...journal article 2022