Effect of Multilanes on Wheel Load Distribution in Steel Girder Bridges

Mabsout, Mounir; Tarhini, Kassim; Frederick, Gerald R.; Kesserwan, Abbas

doi:10.1061/(asce)1084-0702(1999)4:2(99)

Cited by 19 publications

(9 citation statements)

References 3 publications

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“…E!ects of having multiple vehicles on a single span bridge deck with two lanes have been presented by Yener and Chompooming [20]. Mabsout et al [21] have also studied the e!ect of multi-lanes on the wheel distribution in a steel girder bridge.…”

Section: Multiple Vehicles On Multi-lane Continuous Bridge Deckmentioning

confidence: 99%

Dynamic Load on Continuous Multi-Lane Bridge Deck From Moving Vehicles

Zhu¹,

Law²

2002

Journal of Sound and Vibration

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Section: Multiple Vehicles On Multi-lane Continuous Bridge Deckmentioning

confidence: 99%

Dynamic Load on Continuous Multi-Lane Bridge Deck From Moving Vehicles

Zhu¹,

Law²

2002

Journal of Sound and Vibration

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“…The experimental results obtained during the University of Texas multi-phase research program were used to evaluate the analysis results from 2D and 3D finite element models. A 2D finite element analysis places all deck, girders and diaphragms on the same plane, which implies that there are stripes of the deck where stiffness concentration due to the presence of diaphragms occurs (Mabsout et al, 1999). In 2D models, the eccentricity of the post-tensioning force with respect to the superstructure elements is ignored.…”

Section: 4mentioning

confidence: 99%

Experimental Evaluation and Implementation of Post-Tensioning in Concrete Bridge Decks

Ramírez¹,

Aguilar²

2010

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Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractA research program was conducted to evaluate the design recommendations for transverse post-tensioning of bridge decks developed in the FHWA/IN/JTRP/2002-26 (SPR-2409) report. The test specimen consisted of a 40x18 ft cast-in-place concrete deck on precast pretensioned girders. Thirty-two tests were carried out by applying different distributions of transverse post-tensioning force, in combination with a changing number of diaphragms, and two conditions of end-restraint at the supports. The transverse post-tensioning stress ranged from 400 to 1 200 psi and the number of diaphragms was reduced from five to zero.The main findings support the notion that the presence of diaphragms affects the distribution of transverse strains. However, their influence is not as important as analytical models showed. The influence of end-restraint supports on the distribution of transverse strains appeared to be less significant than estimated by Ramirez and Smith-Pardo (2002). Field-work is recommended to further evaluate the effect of this parameter. The use of elastic theory resulted in good agreement between calculated transverse stresses in the concrete deck obtained from the transverse steel reinforcement and those calculated from strains in the post-tensioning bars. In the range of post-tensioning estimated to maintain uncracked condition under service loads, the use of uniform transverse post-tensioning was deemed appropriate.

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“…• 2D models (see for example, Mabsout, 1999): deck, girders, and diaphragms are on the same plane. This implies that in regions of the deck containing the diaphragm, there is a concentration of stiffness.…”

Section: Alternative Modeling Techniquesmentioning

confidence: 99%

An Investigation on Transversely Prestressed Concrete Bridge Decks

Ramírez¹,

Smith²

2003

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Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractThis study is concerned with the development of design specifications for the use of transverse post-tensioning in concrete bridge decks. The ultimate goal behind this proposal is to improve the durability of concrete bridge superstructures.Experimental results from previous studies are used to validate the analytical models implemented in the development of the design specifications. It is found that the required distribution of transverse post-tensioning is such that different application levels of prestressing are required in regions containing the interior and exterior (or outermost) diaphragms. It is also concluded that the magnitude of such transverse forces is a function of the girder boundary conditions, the axial stiffness of the diaphragms, the skew angle of the deck, and the position of the diaphragms/stiffener with respect to the edge of the deck. Simplified design guidelines are developed for use in INDOT. Examples are included to illustrate the suggested methodology and to analytically validate its performance. Key WordsBridge decks, post-tensioning, durability, design recommendations, design examples TECHNICAL SummaryTechnology Transfer and Project Implementation Information TRB Subject Code:25-1 Bridge Design and Performance December 2002 Publication No.: FHWA/IN/JTRP-2002/26, SPR-2409 Final Report An Investigation on Transversely Prestressed Concrete Bridge Decks IntroductionThe conceptual idea of transverse posttensioning bridge superstructures was first implemented during the sixties in Europe as an empirical-based practice. The technique, applicable to cell-box girder bridges exclusively, was intended to (Almustafa, 1983):• Maximize the length of cantilever overhangs • Minimize the number of webs • Improve the connection between longitudinal girders • Provide better and less congested reinforcement layout at pier locations Analytical and experimental evidence on the behavior of transversely post-tensioned decks only became available in the mid eighties when a multiphase project was carried out at the University of Texas at Austin (Poston et. al (1984(Poston et. al ( , 1985(Poston et. al ( , 1987(Poston et. al ( , 1989). The outcome of the Texas Study was a series of design specifications for the use of transverse post-tensioning in concrete bridge decks.The design specifications developed in this study constitute a more general version of the existing recommendations (Texas recommendations). Improvements include:(i) General support conditions for girders are possible, (ii)The effect of the interaction between outermost diaphragms and the boundary conditions of the girder on the distribution of transverse stresses is taken into account, (iii) The suggested specifications provide the user with more options during the design procedure.The objective of this research project was to develop general design guidelines for the application of deck edge transverse posttensioning require...

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Effect of Multilanes on Wheel Load Distribution in Steel Girder Bridges

Cited by 19 publications

References 3 publications

Dynamic Load on Continuous Multi-Lane Bridge Deck From Moving Vehicles

Dynamic Load on Continuous Multi-Lane Bridge Deck From Moving Vehicles

Experimental Evaluation and Implementation of Post-Tensioning in Concrete Bridge Decks

An Investigation on Transversely Prestressed Concrete Bridge Decks

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