Field Load Rating and Grillage Analysis Method for Skewed Steel Girder Highway Bridges

Lu, Renxiang; Judd, Johnn P.; Barker, Michael

doi:10.1061/(asce)be.1943-5592.0001787

Cited by 4 publications

(2 citation statements)

References 52 publications

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“…Every girder is composed of 20 beam elements. Each joint is modeled through 21 lateral beams, and the stiffness of lateral beam is taken to be the same with that of the girder 28 . Each lateral beam is meshed into two elements.…”

Section: Illustrative Examplementioning

confidence: 99%

“…Each joint is modeled through 21 lateral beams, and the stiffness of lateral beam is taken to be the same with that of the girder. 28 Each lateral beam is meshed into two elements. In order to simulate that the joint only transmits shear forces, the rotational degrees of freedom are released at the node where two lateral beam elements are connected.…”

Section: Description Of Bridge and Load Testing Schemementioning

confidence: 99%

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Joint deterioration detection based on field‐identified lateral deflection influence lines for adjacent box girder bridges

Yang

Zhou

et al. 2022

Structural Contr & Hlth

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As critical components that transmit internal forces laterally in multigirder bridges, joint degradation can destroy the cooperative working mechanism of a multigirder system and seriously reduce bridge bearing capacity. This research aims to reveal the joint damage effects on lateral internal force transmission and propose a joint damage detection and location method. A spring-jointed plate model is established to analyze the effects of joint damage, based on which the relationship between the shear forces in the joints and the shear stiffness of the joints can be obtained. Furthermore, a joint damage index is deduced based on the lateral deflection influence lines, and a bridge load testing method is proposed to obtain such influence lines. By using multiple influence lines to jointly solve the damage index, the joint damage in the lateral bridge direction can be accurately detected and located. In addition, by carrying out the damage detection process at several cross sections of the bridge, the joint damage position in the longitudinal bridge direction can also be determined. Finally, a numerical model of an adjacent box girder bridge is illustrated as an example to verify the effectiveness of the damage detection. It can be concluded that the proposed method can effectively identify and locate single or multiple joint damage locations under noise interference, and the joint damage degree can be quantitatively evaluated. This study can provide an effective method to identify the joint damage for adjacent box girder bridges with high accuracy and reliability.adjacent box girder bridge, hinge-jointed plate method, influence line identification, joint damage detection, lateral load distribution | INTRODUCTIONAdjacent box girder bridges (ABGBs) have been widely constructed in Europe, North America, Japan, and China due to their economy and standardization of design and construction. [1][2][3][4] The joints between adjacent girders are essential components to transmit lateral internal forces, which can ensure that each girder in the multigirder system can resist

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Section: Illustrative Examplementioning

confidence: 99%

Section: Description Of Bridge and Load Testing Schemementioning

confidence: 99%

Joint deterioration detection based on field‐identified lateral deflection influence lines for adjacent box girder bridges

Yang

Zhou

et al. 2022

Structural Contr & Hlth

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Effect of Bridge Skew on the Analytical and Experimental Responses of a Steel Girder Highway Bridge

Judd

2022

Lecture Notes in Civil Engineering

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This study examines the effect of bridge skew on the load rating and natural frequencies of a steel girder skewed highway bridge. The analytical load rating was determined based on a line-girder model and the AASHTO bridge design specification. The experimental load rating was determined based on a series of calibrated-weight truck runs. The analytical natural frequency was determined based on correlating the single span response to a continuous span response. The experimental natural frequency was obtained based on the free vibration response from the calibrated-weight truck. The frequency associated with the first spike of the frequency domain plot was identified using a Fast Fourier Transformation. The results show that the analytical load ratings and natural frequencies differed from the experimental values primarily due to effect of bridge skew, which caused the actual load path to be significantly shorter than the bridge span length that was used in the analytical calculations.

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Development of natural frequency in multi-span composite bridges with variable cross-section: Analytical and numerical solutions

Saglik

Balkaya²,

Chen

et al. 2022

Structures

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Field Load Rating and Grillage Analysis Method for Skewed Steel Girder Highway Bridges

Cited by 4 publications

References 52 publications

Joint deterioration detection based on field‐identified lateral deflection influence lines for adjacent box girder bridges

Joint deterioration detection based on field‐identified lateral deflection influence lines for adjacent box girder bridges

Effect of Bridge Skew on the Analytical and Experimental Responses of a Steel Girder Highway Bridge

Development of natural frequency in multi-span composite bridges with variable cross-section: Analytical and numerical solutions

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