Traffic loads used in the design of highway RC bridges in Egypt

Shoukry, Mohie S.; Mahmoud, Zaki I.; Khalf, Nessreen A.

doi:10.1016/j.aej.2017.03.022

Cited by 2 publications

(4 citation statements)

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“…Following the theory of fracture mechanics and the Paris law [ 25 , 26 , 31 ], the fatigue life of welded details can be obtained by assuming the initial crack is propagated through the flange plate, as follows:

where, t f and a 0 are the steel flange plate thickness and initial crack depth as 0.12 mm [ 25 ]. C and m are the material constants which can be taken as 1.3 × 10 −12 and 3 respectively [ 32 ].…”

Section: Fatigue Life Prediction Based Fracture Mechanics Methodsmentioning

confidence: 99%

“…Its reliability is confirmed in continuously estimating the load carrying capacity of bridges. Shoukry et al [ 25 ] conducted a comparative study between the internal forces in longitudinal girders and deck slabs resulting from traffic loads in the Egyptian codes and proposed modified equations to calculate maximum moments in longitudinal girders. Based on the analytical results, the endurance life of bridges can be further evaluated using the mechanics of fracture and fatigue [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads

et al. 2020

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The aim of this study is to find out the degradation of dynamic behaviour of bridge girders with trapezoidal profiled webs when subjected to different vehicle moving loads. Finite element modelling based parametric analysis is demonstrated to be desirable in capturing the dynamic deflection and stress state of critical structural details of girders. The model is validated in the modal analysis through a comparison with theoretical eigenfrequencies. The vibration characteristics are shown to be significantly affected by the corrugation details. The structural service life results of analysed bridge girders are in close agreement with experimental data. It is shown that the dynamic nodal velocity and deflection of analysed bridge girders are greatly affected by the magnitude of the load corresponding to the overload of the vehicle in contrast to the vehicle travel speed. Similar observations can be made for the fatigue life prediction analysis related to the crack initiation when unfavourable effects of the overload vehicle are concerned. Presented analytical results using a fracture mechanics approach could be taken as a good basis for the service life assessment of related bridges with the desired level of performance or functionality.

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Section: Fatigue Life Prediction Based Fracture Mechanics Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads

et al. 2020

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“…Some researchers extended their analysis to study carrying capacity of the bridge model up to failure (Ebeido et al 1996,2006Song et al 2001, Eamon and Nowak 2002, and Ding et al 2012 [8-20-10-6]. Also, the effect of deck cracking and concrete nonlinearity were considered by Sotelino 2004 [19]and Razaqpur et al 2012 [10].…”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that this truck is similar to that recommended by the Eurocode 1991- 1-4 and EN 19933-1-2[12-13]. Linear analyses were carried out (Ebeido 2006, Saleh et al 2012, Hassan 2012, and Shoukry et al 2017 [9-17-15-18] for proposing factors for live load distribution on bridge girders in the case of truck load speci ed by the Egyptian Code 201-2012.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Nonlinear Response in Reinforced Concrete Slab-on- Girder Bridges for interior girder: Influence of Intermediate Diaphragm

Shoukry,

Ebeido,

Mahmoud

et al. 2024

Preprint

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This study presents the outcomes of a thorough nonlinear finite element analysis conducted on slab-on-girder reinforced concrete bridges. The analysis encompasses nonlinear aspects like concrete cracking, compression behavior, and reinforcement yielding. Thirty-six bridges were examined under truck loads specified by the Egyptian Code (ECP 201–2017) [11], alongside the bridges' self-weight. Among these, nine bridges had varying spans and widths, necessitating adjustments in the number of longitudinal girders to maintain uniform girder spacing. Initially, each bridge underwent analysis without intermediate diaphragms, followed by a reanalysis with the insertion of intermediate diaphragms at the mid-span and support locations. Additionally, nine bridges without intermediate diaphragms underwent linear analysis before nonlinear analysis. Furthermore, nine bridges with varied spans and girder spacings but constant width were analyzed. The finite element model was validated using field test data from the literature. Through a parametric investigation, it was observed that the presence of intermediate diaphragms, firmly linked to the longitudinal girders, notably improves transverse load distribution, resulting in reduced loads on the longitudinal girders. This improvement escalates with increasing bridge width. Finally find the proposed equation of moment distribution factor of interior girder. This equation gives a good agreement with analysis.

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Traffic loads used in the design of highway RC bridges in Egypt

Cited by 2 publications

References 0 publications

Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads

Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads

Analyzing Nonlinear Response in Reinforced Concrete Slab-on- Girder Bridges for interior girder: Influence of Intermediate Diaphragm

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