Measured behavior of a curved composite I-girder bridge

Hajjar, Jerome F.; Krzmarzick, Dan P.; Rubio, Luis Pallarés

doi:10.1016/j.jcsr.2009.10.001

Cited by 15 publications

(7 citation statements)

References 14 publications

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“…An accurate analysis of these complex structures is extremely challenging. In order to simplify the analysis, some researchers try to idealize the complex bridge deck structures into a simple structural system such as grillage, equivalent orthotropic plate and some other form [1][2][3] but the solution accuracy is affected with these simplifications which may not be acceptable for a reliable design of these structures. A satisfactory result can be obtained by using a detailed finite element modelling [4][5][6][7][8][9][10] of these curved structures but this is not feasible in a design office, specifically, for a preliminary design of these structures.…”

Section: Introductionmentioning

confidence: 99%

Load distribution for composite steel–concrete horizontally curved box girder bridge

Fatemi

Ali

Sheikh

2016

Journal of Constructional Steel Research

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Section: Introductionmentioning

confidence: 99%

Load distribution for composite steel–concrete horizontally curved box girder bridge

Fatemi

Ali

Sheikh

2016

Journal of Constructional Steel Research

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“…Empirical expressions were deduced from results generated from experiments and by using finite element methods to evaluate the fundamental frequency for such bridges. Hajjar, Krzmarzick and Pallarés (2010) presented dynamic impact factors obtained in the field study of a curved composite I-girder bridge, which were slightly higher than the code-specified values.…”

Section: Dynamic and Seismic Responsementioning

confidence: 72%

“…Huang (2008b) put forward the results of field tests, stating that current AASHTO guide specifications regarding the first transverse stiffener spacing at the simple end support of a curved girder may be too conservative for bridge load capacity ratings; moreover, current specifications may greatly overestimate the dynamic loadings of curved box girder bridges with long span lengths. Hajjar et al (2010) presented load testing results of a multi-span, horizontally curved composite steel I-girder bridge in Duluth, Minnesota. Stresses up to 75% of the girder yield stress were obtained in the bridge, and behavior is described in the girders, diaphragms, lateral wind bracing, deck, bearings, and fatigue details.…”

Section: Dynamic and Seismic Responsementioning

confidence: 99%

Analysis, design and construction of curved composite girder bridges: State-of-the-art

Lin

Yoda

2010

International Journal of Steel Structures

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The horizontally curved composite girder bridges have excellent properties, such as quick construction, good seismic performance, saving construction formwork and convenience in spatial arrangement.etc, which have greatly promoted the application of such bridges. The objective of this paper is to provide and summarize important references related to the analysis, design and construction of curved composite girder bridges. Subjects discussed in this review include (1) different curved girder bridge configurations and their applied range; (2) current specifications; (3) construction issues; (4) design methods; (5) analytical methods; (6) load distribution; (7) torsional behavior; (8) warping stresses; (9) stability; (10) ultimate load-carrying capacity; (11) dynamic and seismic response; (12) loading test; (13) long-term behavior; and (14) design details. The literature survey presented herein mainly focuses on papers written in English, Japanese and Chinese in relation to curved composite girders.

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“…Proračun se može provesti uz pomoć pojednostavnjenih analitičkih metoda ili se konstrukcija zamjenjuje proračunskim roštiljnim numeričkim modelom za proračun na računalu [5]. Iako suvremene konfiguracije računala omogućuju izradu proračunskih modela korištenjem štapnih, pločastih i prostornih elemenata ili njihovom kombinacijom, jednostavni roštiljni modeli sastavljeni od štapnih konačnih elemenata nisu izgubili svoje mjesto u inženjerskoj primjeni [7][8][9][10][11][12][13]. Jednostavne roštiljne modele karakterizira brzina i lakoća modeliranja te jednostavnost interpretacije rezultata, zadovoljavajuća točnost u usporedbi s rezultatima ispitivanja i rezultatima složenijih modela, kao i neovisnost o snažnim računalima [9,10,14,15].…”

Section: Uvodunclassified

Određivanje Proračunske Širine T-Presjeka Poprečnog Nosača

Grandić¹,

Grandić²,

Brezac³

2011

e-GFOS

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Goran BrezacSveučilište u Rijecu, Građevinski fakultet, dipl.ing.građ. Sažetak: U ovom radu analizira se i vrjednuje proračunska širina T-presjeka poprečnog nosača podvožnjaka Vrata 1 na temelju proračuna i rezultata pokusnog opterećenja. Rebrasti gredni mostovi najčešće se proračunavaju kao štapni roštiljni sustavi. Uzdužni i poprečni nosači se, zajedno sa sudjelujućim dijelom kolničke ploče, promatraju kao T-presjeci. Njihova krutost ovisi o proračunskoj (sudjelujućoj) širini T-presjeka koja ovisi o više čimbenika, među ostalim i o opterećenju koje na mostu može biti različito po intenzitetu i položaju. U ovom radu se određuju proračunske širine T-presjeka poprečnog nosača u polju roštiljne rasponske konstrukcije pomoću numeričkih proračuna po metodi konačnih elemenata za različite položaje pokusnog opterećenja. Na taj način određene proračunske širine rabe se za proračun progiba na jednostavnim roštiljnim modelima. Proračunani progibi uspoređuju se s odgovarajućim progibima podvožnjaka izmjerenima pri pokusnom opterećenju i progibima proračunanima na jednostavnom roštiljnom modelu u kojemu je uporabljena proračunska širina T-presjeka poprečnog nosača u polju prema normi HRN ENV 1992-1-1.Ključne riječi: gredni rebrasti most, poprečni nosač, proračunska širina T-presjeka DETERMINATION OF AN EFFECTIVE WIDTH OF A T-BEAM CROSS SECTION OF TRANSFERSAL RIBBED BRIDGE DECKAbstract: In this paper an effective width of a T-beam cross section of transversal girder of underpass Vrata 1 is analyzed and valorized on the basis of field testing results and results of conducted calculations. The most common method used in ribbed bridge decks analysis is grillage analogy. Longitudinal and transversal girders, together with an effective part of a deck slab acts as T-shaped beams. Stiffness of longitudinal and transversal structural elements depends on effective width of the T-beams. The effective width of T-beams depends on several factors, among others it depends on the load applied on the bridge, which can vary in intensity and position. In this paper the effective widths of the T-beam of the transversal girder in the span are determined by using numerical calculation on finite element model for different load testing schemes. The effective widths of T-beam determined in this way are used for the calculation of deflection on a simple grillage models. Calculated deflections are compared with the corresponding measured deflection on underpass under test loading and deflections calculated on a simple grillage model in which the effective width of T-beam cross-section in the span is determined according to HRN ENV 1992-1-1.

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Measured behavior of a curved composite I-girder bridge

Cited by 15 publications

References 14 publications

Load distribution for composite steel–concrete horizontally curved box girder bridge

Load distribution for composite steel–concrete horizontally curved box girder bridge

Analysis, design and construction of curved composite girder bridges: State-of-the-art

Određivanje Proračunske Širine T-Presjeka Poprečnog Nosača

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