Valencia bridge fire tests: Validation of simplified and advanced numerical approaches to model bridge fire scenarios

Alós-Moya, J.; Payá-Zaforteza, Ignacio; Hospitaler, Antonio; Loma-Ossorio, Eduardo

doi:10.1016/j.advengsoft.2018.11.003

Cited by 39 publications

(12 citation statements)

References 24 publications

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“…Steel is very sensitive to temperatures [31] that its thermal and mechanical properties can change significantly at high temperatures. e temperature-dependent material property in Eurocode [25] shown in Figure 7 was adopted for the deck steel because its applicability has been validated by numerous experimental and numerical studies [13,14,28,31]. Around 750 °C, the thermal expansion remains constant because of the austenitization-induced counteraction.…”

Section: Ermal Responsementioning

confidence: 99%

“…Comparatively, coupling the computational fluid dynamics (CFD) model of fire scenario and the FEM model of the exposed structural portion can provide a more realistic insight into the thermomechanical behavior of the bridges in fire conditions [12]. According to the CFD-FEM-based study [13] and experimental validation [14] on a simply supported bridge, this coupled approach can predict the structural behavior in a more complex but more precise way. Peris-Sayol et al [15] adopted the coupled CFD-FEM method to analyze the behavior of a simply supported steel bridge and analyze the parametric influence caused by horizontal constraint, modeled component count, vertical clearance, and wind.…”

Section: Introductionmentioning

confidence: 99%

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Coupled CFD‐FEM Simulation of Steel Box Bridge Exposed to Fire

Zhi

2022

Advances in Civil Engineering

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Increasing fire-induced bridge failures are demanding more precise behavior prediction for the bridges subjected to fires. However, current numerical methods are limited to temperature curves prescribed for building structures, which can misestimate the fire impact significantly. This paper developed a framework coupling the computational dynamics (CFD) method and finite element method (FEM) to predict the performance of fire-exposed bridges. The fire combustion was simulated in CFD software, Fire Dynamic Simulator, to calculate the thermal boundary required by the thermomechanical simulation. Then, the adiabatic surface temperatures and heat transfer coefficient were applied to the FEM model of the entire bridge girder. A sequential coupled thermomechanical FEM simulation was then carried out to evaluate the performance of the fire-exposed bridge, thermally and structurally. The methodology was then validated through a real fire experiment on a steel beam. The fire performance of a simply supported steel box bridge was simulated using the proposed coupled CFD-FEM methodology. Numerical results show that the presented method was able to replicate the inhomogeneous thermomechanical response of box bridges exposed to real fires. The girder failed due to the buckling of a central diaphragm after the ignition of the investigated tanker fire in no more than 10 min. The framework presented in this study is programmatic and friendly to researchers and can be applied for the estimation of bridges in different fire conditions.

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Section: Ermal Responsementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coupled CFD‐FEM Simulation of Steel Box Bridge Exposed to Fire

Zhi

2022

Advances in Civil Engineering

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“…The first experiment of a whole bridge structure was conducted in Valencia, Spain, in 2017 [16] and experimental data has been used to validate CFD models performed by FDS [66]. The bridge was a one span (6 m) steel grillage consisting of two girders, compositely supporting a reinforced concrete slab.…”

Section: Valencia Bridge Fire Tests (2017)mentioning

confidence: 99%

Bridge fires in the 21st century: A literature review

Jiayu

Carvel

Usmani

2021

Fire Safety Journal

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“…e results show that the framework can predict the response of RC structure well. Alos-Moya et al [12] calibrated the fire model by using the temperature results of Valencia bridge fire test conducted by Valencia Polytechnic University in Valencia (Spain). e results show that some of the fire stability models are only suitable for scale bridge fire test, not for actual bridge fire analysis.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Full‐Scale Prestressed Concrete Beams with Thin Slab after Exposure to Actual Fire

Hao

Chen

Tang

et al. 2021

Advances in Materials Science and Engineering

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To provide an effective basis and reference for applications of prestressed concrete thin-slab beams after a bridge fire, methods and principles of fire-resistant design, repair, and reinforcement of such beams were discussed. Taking a simple supported and continuous girder bridge of an expressway in service as a sample, appearance testing and nondestructive testing of the internal structure were carried out. Four representative full-scale prestressed concrete beams were selected. Through the comparative test of the ultimate bearing capacity of such beams, the laws of the deflection deformation, strain distribution, crack formation, and crack development were obtained. By combining with the finite element simulation and theoretical analysis, the ultimate bearing capacity, complex mechanical characteristics, and breakage feature and failure mechanism of such beams were studied. It was indicated by the results the following: (1) Prestress loss will cause height reduction of the concrete shear zone, which is one of the main reasons why the bending-shearing failure of such beams happened before the pure bending failure. (2) Under certain operating loads, brittle fracture is more likely to occur on the bottom surface of such beams when directly exposed to fire. (3) The bursting and spalling depth of concrete after being exposed to fire can be used as the characteristic parameters for the rapid identification of the bottom surface of such after-fire beams.

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Valencia bridge fire tests: Validation of simplified and advanced numerical approaches to model bridge fire scenarios

Cited by 39 publications

References 24 publications

Coupled CFD‐FEM Simulation of Steel Box Bridge Exposed to Fire

Coupled CFD‐FEM Simulation of Steel Box Bridge Exposed to Fire

Bridge fires in the 21st century: A literature review

Mechanical Properties of Full‐Scale Prestressed Concrete Beams with Thin Slab after Exposure to Actual Fire

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