Load Spectrum and Fatigue Life Computer Analysis of Prestressed Concrete Bridges

Qin, Xiaohong; Dou, Yihua; Wan, Chen

doi:10.14257/ijsia.2015.9.7.22

Cited by 6 publications

(6 citation statements)

References 15 publications

(8 reference statements)

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“…The tests on slabs showed that the fatigue life under a moving load is lower than for a load that is repeatedly applied at the same position (Sonoda and Horikawa, 1982). For partially prestressed concrete beams (Harajli and Naaman, 1985;Naaman and Founas, 1991;Shahawi and Batchelor, 1986;Xin et al, 2015;Xin et al, 2017;Zeng et al, 2014), experiments showed that the failure mode could change from flexural failure to shear failure, which led to thorough research on this topic.…”

Section: Fatigue Strength Of Concrete Structuresmentioning

confidence: 99%

Fatigue Testing of Transversely Prestressed Concrete Decks

Lantsoght¹,

Veen²,

Koekkoek³

et al. 2019

ACI Structural Journal

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Section: Fatigue Strength Of Concrete Structuresmentioning

confidence: 99%

Fatigue Testing of Transversely Prestressed Concrete Decks

Lantsoght¹,

Veen²,

Koekkoek³

et al. 2019

ACI Structural Journal

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“…For partially pre-stressed concrete structures, reinforcement stress suddenly increases when the concrete cracks. Therefore, the maximum and minimum load values selected in the fatigue test must make the reinforcement stress repeatedly span sudden increase points of its stress [27]. The details are shown in Table 3.…”

Section: Corrosion Testsmentioning

confidence: 99%

Untitled

2017

JESTR

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In-service bridges along rivers or seas are constantly exposed to harsh environmental conditions, which contain corrosive substances that seriously affect the structural safety of these bridges. In its service processes, cyclic stress accelerates this corrosive effect, which aggravates fatigue and results in the failure of the materials utilized. Consequently, the expected endurance life is not reached. In this study, six test beams were designed, produced, and subsequently subjected to a chloride salt corrosion test to explore the effects of environment corrosion on the fatigue performance of bridge structures and reveal the development process of fatigue failure and its influencing factors. Fatigue amplitude was determined through comprehensive static and expressway vehicle load tests. Fatigue tests were also conducted on corrosion test beams, and the material properties of the pre-stressed concrete bridge after corrosion were analyzed under the effect of long-term traffic load. Fatigue brittle failure occurred in the form of reinforcement fracture in all test beams after corrosion. The service life of test beams with corrosion rates of 5% and 10% decreased by 53% and 96%, respectively, compared with that of a non-corroded beam at a fixed load level. Residual strain of the test beam with a corrosion rate of 10% under failure was twice that of the test beam with a corrosion rate of 5%. The maximum and residual strain curves of all test beams presented "three-phased" characteristics. After corrosion, the residual concrete strain in the compression zone and the frequency of the fatigue tests exhibited a double-logarithmic linear relation. Strain variation in the prestressed reinforcement after corrosion was significant, but the strain variation in the ordinary reinforcement was minimal. The analysis process and method of this study are also applicable to concrete members in other corrosive environments. The findings can provide a theoretical reference for fatigue performance analyses under different corrosion conditions.

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“…The summarized experiments are unique in nature, as the tested specimens give us insight in the behavior of slab-between-girder bridges as a structural system. Most fatigue testing in the past focused on testing small specimens [22,23] or structural elements [24][25][26][27][28][29][30][31] instead of structural systems. The insights from these experiments are now reported for the first time in the context of bridge assessment.…”

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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Load Spectrum and Fatigue Life Computer Analysis of Prestressed Concrete Bridges

Abstract: With respect to fatigue damage of heavy traffic on the bridge structure, this paper studied on load spectrum and fatigue simulation.

Cited by 6 publications

References 15 publications

Fatigue Testing of Transversely Prestressed Concrete Decks

Fatigue Testing of Transversely Prestressed Concrete Decks

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Fatigue Assessment of Prestressed Concrete Slab-between-Girder Bridges

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