Live-Load Analysis of a Curved I-Girder Bridge

Barr, Paul; Yanadori, Naoki; Halling, Marvin W.; Womack, Kevin C.

doi:10.1061/(asce)1084-0702(2007)12:4(477)

Cited by 10 publications

(8 citation statements)

References 9 publications

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“…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%

“…This may be a simple task for a simply supported straight beam but this is not so for curved beams as they are always found to be statically indeterminate. Though some researchers [9,11,12] try to avoid this problem by treating curved beams as equivalent straight beams with altered properties to account for the member curvature. These simplified assumptions can compromise the accuracy of the results significantly which may not be desirable.…”

Section: Introductionmentioning

confidence: 99%

“…A detailed finite element analysis of these curved bridge deck structures can be used for this purpose. Such attempts are made by some researchers [4][5][6][7][8][9][10] who have used the loading configuration recommended by AASHTO [14]. In their investigations, the effect of different parameters such as span length, curvature ratio, cross-frame spacing and number of loading lanes on load distribution factors of horizontally curved bridges has been studied.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Fatemi

Ali

Sheikh

2016

Journal of Constructional Steel Research

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“…Recommendations are made outlining rating of horizontally curved composite steel I-girder bridges through the use of grillage-based analysis, with and without the use of load testing, and within the context of the AASHTO Load and Resistance Factor Rating (LRFR) and Load Factor Rating (LFR) procedures. Barr et al (2007) presented the LiveLoad test results of a three-span, curved steel I-girder with concrete deck bridge, and subsequent comparison with the V-load method to investigate its accuracy. 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.…”

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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“…However, the behavior of curved I-girder bridges is more complex and the curvature makes it complicated to perform numerical analyses compared with straight ones. Some studies of dynamic response of horizontally curved I-girder bridges have been performed for road vehicles in which multi-degrees-of-freedom vehicle models have been used in conjunction theoretical road surface profiles with some assumptions [9][10][11][12]. All of these researches referred above are focusing on multi I-girder bridges, while limited study was on horizontally curved twin I-girder bridges.…”

Section: Introductionmentioning

confidence: 99%

Improved Twin I-Girder Curved Bridge-Vehicle Interaction Analysis and Human Sensitivity to Vibration

Awall¹,

Hayashikawa²,

Humyra³

2016

JCEA

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Abstract:The perceptible vibration of curved twin I-girder bridges under traffic loads is an important design consideration, because this bridge have rather low torsional stiffness that produce excessive vibrations. The objective of this investigation was to study the vibration of curved twin I-girder bridges due to moving vehicles and the effect of vibrations on bridge users. To this end, a comprehensive three-dimensional finite element models for bridge and vehicle are developed by using ANSYS code for studying bridge-vehicle interaction and the resultant sensitivity to vibration. Truck parameters include the body, the suspension and the tires. Gap and actuator elements are incorporated into the tire models to simulate the separation between the tires and road surface, and road surface roughness, respectively. Road roughness profiles are generated from power spectral density and cross spectral functions. To couple the motion of the bridge and vehicle, Lagrange multipliers and constraint equations are utilized through the augmented Lagrangian method. A parametric study is performed to identify the effect of various parameters on the vibration of the bridge. The results have been expressed in the form of human perceptibility curves. This study finds that the bridge response is significantly influenced by the road roughness, bump height at expansion joint and vehicle speeds. The results show that the inclusion of features such as increasing the torsional stiffness by providing additional stiffened bracing has major effects on the reduction of perceptible vibration.

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Live-Load Analysis of a Curved I-Girder Bridge

Cited by 10 publications

References 9 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

Improved Twin I-Girder Curved Bridge-Vehicle Interaction Analysis and Human Sensitivity to Vibration

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