Full-Scale Tests to Failure Compared to Assessments – Three Concrete Bridges

Bagge, Niklas; Nilimaa, Jonny; Puurula, Arto; Täljsten, Björn; Blanksvärd, Thomas; Sas, Gabriel; Elfgren, Lennart; Carolin, Anders

doi:10.1007/978-3-319-59471-2_219

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…An example of this goal for a collapse test is testing of the Ruytenschildt Bridge (Lantsoght et al 2017d) in Friesland to learn more about the behavior of reinforced concrete slab bridges, see Figure 4a. In Sweden, in the recent years, a number of bridges have been tested to collapse (Bieñ et al 2007, Zou et al 2009, Puurula et al 2014, Bagge et al 2015a, Bagge et al 2015b, Puurula et al 2015, Puurula et al 2016, Bagge et al 2017a.…”

Section: Proof Load Testsmentioning

confidence: 99%

General Considerations

Lantsoght¹,

Schmidt²

2019

Load Testing of Bridges

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This chapter discusses aspects that should be considered prior to every load test. The first question that needs to be answered is: "Is this bridge suitable for load testing? 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 evaluate if a bridge is suitable for load testing, different types of testing are shown, the topic of when to load test a bridge is discussed, and structure type considerations are debated. Finally, some safety precautions that should be fulfilled during a load test are discussed.

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Section: Proof Load Testsmentioning

confidence: 99%

General Considerations

Lantsoght¹,

Schmidt²

2019

Load Testing of Bridges

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“…With higher demands and lower capacities according to the Eurocodes, the outcome of an assessment is often that existing bridges do not fulfil the code requirements for brittle failure modes such as shear [4] and punching [5]. This problem is not limited to the Netherlands; similar discussions take place in Germany [6], Sweden [7], Switzerland [8], and other European countries, as well as in the United States [9], where bridge construction peaked in the 1930s (the New Deal) and between 1956 and 1992 (construction of the Interstate Highway System). As one can see, methods for an accurate assessment of existing bridges are becoming increasingly important, as the safety of the traveling public should be protected, and at the same time, unnecessary bridge replacement or strengthening actions should be avoided [10].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Assessment of Prestressed Concrete Slab-between-Girder Bridges

Lantsoght¹,

Koekkoek²,

Veen³

et al. 2019

Preprint

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In the Netherlands, the assessment of existing prestressed concrete slab-between-girder bridges showed 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 and changes the failure mode from bending to punching shear. To improve the assessment of the existing prestressed slab-between-girder bridges in the Netherlands, two 1:2 scale models of an existing bridge, the Van Brienenoord Bridge, were built in the laboratory and tested monotonically as well as under cycles of loading. The result of these experiments is: 1) the static strength of the decks, showing that compressive membrane action significantly enhances the punching capacity, and 2) the Wöhler curve of the decks, showing that compressive membrane action remains under fatigue loading. The experimental results can then be used for the assessment of the most critical existing slab-between-girder bridge. The outcome is that the bridge has sufficient punching capacity for static and fatigue loads, and thus that the existing slab-between-girder bridges in the Netherlands fulfil the code requirements for static and fatigue punching.

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“…5,6 Experimental tests are the most straightaway method to study both flexural and shear behavior of these structures. Some research studies investigated the flexural behavior [7][8][9][10][11][12][13] of full-scale existing PC bridges or parts of these (e.g., deck, slabs, and girders), while others focused on their shear behavior. [14][15][16][17] These works demonstrated how existing PC bridges with none-to-slight damage or deterioration ensured satisfactory load-bearing capacity, overperforming structural requirements by code provisions.…”

mentioning

confidence: 99%

Multidimensional nonlinear numerical simulation of post‐tensioned concrete girders with different prestressing levels

Galano,

Losanno,

Miluccio

et al. 2023

Structural Concrete

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Most of the Italian infrastructures have been built since the mid‐twentieth century. Prestressed concrete (PC) has been widely used, especially for bridges and viaducts. These structures have proved effective over time, but their performance could be affected by degradation phenomena (i.e., corrosion of the tendons and residual prestressing) or construction defects (i.e., grouting of the ducts), which need to be accurately modeled. This paper focuses on the flexural response of two reduced‐scale, posttensioned, PC bridge girders, prestressed with two different jacking forces and tested under four‐point bending configuration. Four multidimensional numerical models were developed to simulate the experimental behaviors of the selected specimens, using two alternative computational strategies, namely, the finite element method (FEM) and applied element method (AEM). Three FEM modeling were considered, ranging from one‐dimensional lumped‐plasticity models to two‐dimensional and three‐dimensional (3D) spread‐plasticity models. Besides, 3D AEM models were developed into another software package. The accuracy and the computational costs of the two numerical strategies are discussed in this paper. Also, the main features of each numerical modeling technique are addressed, including comparisons between numerical and experimental global response data as well as the statistical characterization of the model error. Based on these different features, the authors also suggest the most suitable numerical strategy for future studies on PC girders.

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Full-Scale Tests to Failure Compared to Assessments – Three Concrete Bridges

Cited by 3 publications

References 6 publications

General Considerations

General Considerations

Fatigue Assessment of Prestressed Concrete Slab-between-Girder Bridges

Multidimensional nonlinear numerical simulation of post‐tensioned concrete girders with different prestressing levels

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