Carlos Sousa

Petrobras (Brazil)

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Experimental validation of the FE model for dynamic analysis of a composite railway viaduct's deck slab

Report (2019)

Joel Malveiro Carlos Sousa Rui Calçada Diogo Ribeiro

<p>The experimental validation of FE numerical models, performed through the comparison between measured and calculated responses, presents an important step in further detailed calculations or simulation of future scenarios. Several parameters to be taken into account in numerical analyses, such as the cut-off frequency, train speed or damping coefficients, might have a preponderant effect in the success of that validation. Therefore, this paper discusses and evaluates the effect of these parameters in the numerical analyses to be carried out on a FE model of the Alcácer do Sal railway viaduct, under the passage of an Alfa Pendular train with a speed equal to 220 km/h. The dynamic behaviour of the deck slab is evaluated, through a methodology that considers train-bridge interaction, taking into account frequency limits equal to 15, 20 and 30 Hz, small variations in the train speed and two different scenarios of damping coefficients.</p>

Slab

Bridge (graph theory)

Bridge deck

10.2749/guimaraes.2019.0697

Cite

Citations (0)

Fatigue life of precast decks of high speed railway bridges

CRC Press eBooks (2008)

Carlos Sousa R Cal√ßada Afonso Serra Neves

Precast concrete

10.1201/9780203885307.ch69

Cite

Citations (0)

GBT-based time-dependent analysis of steel-concrete composite beams including shear lag and concrete cracking effects

Thin-Walled Structures (2020)

David Henriques Rodrigo Gonçalves Carlos Sousa Dinar Camotim

10.1016/j.tws.2020.106706

Cite

Citations (19)

Numerical evaluation of the non-linear behaviour of cracked RC members under variable-amplitude cyclic loading

Materials and Structures (2014)

Carlos Sousa Rui Calçada Afonso Serra Neves

10.1617/s11527-014-0356-x

Cite

Citations (6)

Precast Bridge Deck for Railway Using HPFRC and UHPFRC

Lecture notes in civil engineering (2023)

Rui Valente Mário Pimentel Carlos Sousa José Rui Pinto

Precast concrete

Cementitious

Slab

Bridge (graph theory)

10.1007/978-3-031-32511-3_180

Cite

Citations (1)

Recommendations of RILEM TC 287-CCS: thermo-chemo-mechanical modelling of massive concrete structures towards cracking risk assessment

Materials and Structures (2021)

Miguel Azenha Fragkoulis Kanavaris Dirk Schlicke Agnieszka Jędrzejewska Farid Benboudjema

10.1617/s11527-021-01732-8

Cite

Citations (25)

New Methodology for Calculation of Required Prestressing Levels in Continuous Precast Bridge Decks

Journal of Bridge Engineering (2013)

Carlos Sousa Marco Fonseca Rui Calçada Afonso Serra Neves

The calculation of minimum required prestressing levels in prestressed bridge deck girders is usually governed by serviceability requirements in terms of allowable stress levels. In the case of continuous structures, different quantities of prestressing steels have to be quantified for different critical locations and, owing to the structure hyperstaticity, the prestressing force required for a given critical cross section depends on the quantities of prestressing steels adopted in the remainder of the structure. This paper presents a feasible methodology for quantification of the minimum required prestress forces for different critical cross sections, avoiding the use of iterative procedures. A methodology for taking into account the variability of the structure response, owing to the uncertainty associated with the quantification of creep, shrinkage, and construction timings is also presented. Monte Carlo simulations, based on the Latin Hypercube sampling method, are used in the calculation of the statistical distribution of the long-term structure response. Two case studies are presented to show the relevance of the aforementioned variability and its consequences in terms of minimum required prestressing levels.

Serviceability (structure)

Precast concrete

Prestressed concrete

Latin Hypercube Sampling

Shrinkage

Shakedown

10.1061/(asce)be.1943-5592.0000469

Cite

Citations (1)

Precast continuous bridges. Probabilistic Analysis

Carlos Sousa Afonso Serra Neves

Precast concrete

Source

Cite

Citations (0)

Partially Precast Solutions for Medium Span Bridges: the Case of the Bridge Over the River Tâmega

Alípio Ferreira B.A.V. Lima Pedro Torres Rui Sousa David Fernández‐Ordóñez

Precast concrete

Mega-

Bridge (graph theory)

Source

Cite

Citations (0)

Constitutive Model for Aggregate Interlock in FEM Analyses of Concrete Interfaces with Embedded Steel Bars

International Journal of Concrete Structures and Materials (2020)

Diogo Figueira Carlos Sousa Afonso Serra Neves

Abstract A nonlinear finite element model (FEM) is developed to assess the behaviour of a cracked concrete interface, reinforced with embedded steel bars and subjected to monotonic loading. A dowel action finite element modelling approach is conceived for that purpose. The bond between the steel bars and the surrounding concrete is also considered in the model and an interface finite element is included to simulate aggregate interlock. Then, the comparison of the model results with experimental values allowed the calibration of aggregate interlock constitutive relations for cracks in monolithic concrete restrained by embedded steel bars. New constitutive relations are also proposed for shear transfer by aggregate interlock in a concrete joint.

Interlock

Dowel

Structural material

Fastener

10.1186/s40069-019-0390-8

Cite

Citations (4)