Searched for: author:"Lantsoght, E.O.L."
(1 - 20 of 89)

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Alampalli, Sreenivas (author), Frangopol, Dan M. (author), Grimson, Jesse (author), Halling, Marvin W. (author), Kosnik, David E. (author), Lantsoght, E.O.L. (author), Yang, David (author), Zhou, Y. Edward (author)
Bridge load testing can answer a variety of questions about bridge behavior that cannot be answered otherwise. The current governing codes and guidelines for bridge load testing in the United States are the 1998 NCHRP Manual for Bridge Rating through Load Testing and Chapter 8 of the AASHTO Manual for Bridge Evaluation. Over the last two...
review 2021
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Abambres, Miguel (author), Lantsoght, E.O.L. (author)
According to the current codes and guidelines, shear assessment of existing reinforced concrete slab bridges sometimes leads to the conclusion that the bridge under consideration has insufficient shear capacity. The calculated shear capacity, however, does not consider the transverse redistribution capacity of slabs, and thus leads to overly...
journal article 2020
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Zhang, F. (author), Zarate Garnica, G.I. (author), Yang, Y. (author), Lantsoght, E.O.L. (author), Sliedrecht, Henk (author)
In the Netherlands, many prestressed concrete bridge girders are found to have insufficient shear–tension capacity. We tested four girders taken from a demolished bridge and instrumented these with traditional displacement sensors and acoustic emission (AE) sensors, and used cameras for digital image correlation (DIC). The results show that AE...
journal article 2020
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Sousa, Alex (author), Lantsoght, E.O.L. (author), El Debs, Mounir K. (author)
Most models of shear strength used to estimate the shear capacity of wide reinforced concrete members without shear reinforcement do not take into account the structural system or the support conditions. However, some experimental results indicate that bending moment can have a positive influence on members with predominant flexural action,...
conference paper 2020
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de Sousa, AlexM.D. (author), Lantsoght, E.O.L. (author), El Debs, Mounir K. (author)
The calibration of most analytical models that assess the shear strength of wide reinforced concrete members without shear reinforcement is based on simply supported beam tests, which may not be representative of slabs and wide members failing in shear. This paper addresses the knowledge on the shear strength of wide members, identification of...
journal article 2020
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Granda Valencia, Camilo (author), Lantsoght, E.O.L. (author)
Large torsional moments, which need to be considered in a design, can result among others, in structures with an asymmetric layout or loading. To find the required longitudinal and transverse reinforcement to resist these torsional moments, the link between the three-dimensional action of the torsional moment and sectional analysis methods is...
conference paper 2020
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Benítez C., Kevin S. (author), Lantsoght, E.O.L. (author)
The design of a cast-in-place, post-tensioned concrete, multi-cell box girder bridge under combined torsion, shear, and flexure is presented in this example. The bridge covers three spans of different lengths, supported by two abutments and two bents; its cross-section consists of three 12 ft (3.7 m) lanes, two 10 ft (3.0 m) shoulders, and two...
conference paper 2020
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Granda Valencia, Camilo (author), Lantsoght, E.O.L. (author)
This paper provides a practical example of the torsion design of an inverted tee bent cap of a three-span bridge. A full torsional design following the guidelines of the ACI 318-19 building code is carried out and the results are compared with the outcomes from CSA-A23.3-04, AASHTO-LRFD-17, and EN 1992-1-1:2004 codes. Then, a summary of the...
conference paper 2020
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Lantsoght, E.O.L. (author), Schmidt, J.W. (author)
This chapter discusses aspects that should be considered prior to every load test. The first questions that needs to be answered are “Is this bridge suitable for load testing?” and “If so, what are the goals of the load test?” To answer these questions, information must be gathered and preliminary calculations should be carried out. In order to...
book chapter 2019
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Lantsoght, E.O.L. (author), Schmidt, J.W. (author)
This chapter discusses the aspects related to the execution of load tests regardless of the chosen type of load test. The main elements required for the execution of the load test are the equipment for applying the load and the equipment for measuring and displaying (if required) the structural responses. This chapter reviews the commonly used...
book chapter 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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Abad, Belkis Filian (author), Lantsoght, E.O.L. (author), Yang, Y. (author)
The Critical Shear Displacement Theory (CSDT) was developed to determine the shear capacity of reinforced concrete beams based on the different shear-carrying mechanisms (concrete in the compression zone, aggregate interlock, and dowel action). This research aims at extending the CSDT to Steel Fibre Reinforced Concrete (SFRC) by adding the...
conference paper 2019
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Frangopol, Dan M. (author), Yang, David Y. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphaël D.J.M. (author)
This chapter reviews concepts related to the uncertainties associated with structures and how the results of load tests can be used to reduce these uncertainties. When an existing bridge is subjected to a load test, it is known that the capacity of the cross section is at least equal to the largest load effect that was successfully resisted. As...
book chapter 2019
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Overgaard Christensen, Christian (author), Lantsoght, E.O.L. (author), Wittrup Schmidt, Jacob (author)
Advanced crack monitoring is crucial for high precision response- and threshold evaluation when performing proof- and diagnostic load tests on existing concrete structures. Mostly, crack monitoring techniques involve one monitoring method, which provide thresholds with regard to stop criteria and characterization information. In the ongoing...
conference paper 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)
This chapter deals with the methodology for proof load testing. All aspects of proof load testing that are shared with other load testing methods have been discussed in Part II of Volume 12. In this chapter, the particularities of proof load testing are discussed. These elements include the determination of the target proof load, the procedures...
book chapter 2019
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Lantsoght, E.O.L. (author)
Después de la expansión de la red vial del país, la comunidad de ingenieros civiles y el gobierno tienen un número mayor de puentes existentes a manejar. En el futuro, esos puentes necesitaran mantenimiento y adopciones a los cambios en términos de las cargas vivas. En ese artículo vamos a ver como en Europa y América del Norte se está evaluando...
conference paper 2019
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Lantsoght, E.O.L. (author)
This chapter brings all information from the previous chapters together and restates the main topics that have been covered in this book. The topics to which more research energy has been devoted and the remaining open questions are discussed. Based on the current knowledge and state of the art, as well as the practical experiences presented by...
book chapter 2019
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Torres, Juan Andres (author), Lantsoght, E.O.L. (author)
For shear-critical structural elements where the use of stirrups is not desirable, such as slabs or beams with reinforcement congestion, steel fibers can be used as shear reinforcement. The contribution of the steel fibers to the shear capacity lies in the action of the steel fibers bridging the shear crack, which increases the shear capacity...
journal article 2019
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Lantsoght, E.O.L. (author), Schmidt, J.W. (author)
This chapter discusses the aspects related to the preparation of load tests, regardless of the chosen type of load test. After determination of the test objectives, the first step should be a technical inspection of the bridge and bridge site. With this information, the preparatory calculations (assessment for existing bridges and expected...
book chapter 2019
Searched for: author:"Lantsoght, E.O.L."
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