Stress Distributions in Girder-Arch-Pier Connections of Long-Span Continuous Rigid Frame Arch Railway Bridges
Because of their large stiffness and spanning capability, continuous rigid frame arch bridges are attracting increasing interest in the development of high-speed railway networks in China. The internal loadings are associated with both the continuous rigid frame and arch substructural systems. Thus, the bridges are subjected to complex stresses, in particular, at the girder-arch-pier connections. The evaluation of the mechanical performance and understanding of the stress distribution of the girder-arch-pier connection are critical for ensuring the effective design and condition assessment of the bridges. This paper investigates the stress distributions in the girder-arch-pier connections of the world's longest continuous rigid frame arch railway bridge, the Yichang Yangtze River Bridge. Two models with a length scale of 1/10 were prepared and tested for the side-span and midspan girder-arch-pier connections, respectively. Detailed stress distributions in the connection models were measured, and three-dimensional finite-element models were established to help understand the measured stress distributions. The side-span and midspan connections are primarily in compression and have similar stress distributions.
H. Gou et al., "Stress Distributions in Girder-Arch-Pier Connections of Long-Span Continuous Rigid Frame Arch Railway Bridges," Journal of Bridge Engineering, vol. 23, no. 7, American Society of Civil Engineers (ASCE), Jul 2018.
The definitive version is available at https://doi.org/10.1061/(ASCE)BE.1943-5592.0001250
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Arch bridges; Finite element method; Piers; Railroad bridges; Railroad transportation; Railroads; Rigidity; Stress concentration; Continuous rigid frame; High speed railway networks; Mechanical performance; Model tests; Railway bridges; Strain distributions; Three dimensional finite element model; Yichang Yangtze River bridge; Arches; Continuous rigid frame arch bridge; Girder-arch-pier connections; Model test; Railway bridge; Strain distribution
International Standard Serial Number (ISSN)
Article - Journal
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