A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Simplified Two-Column Analytically Based Fiber Model
Two-column rigid-cap beam bridge bents are often used as transverse-to-bridge lateral force-resisting systems. Seismic performance of two-column bridge bents were investigated at the University of California, San Diego, and results of quasi-static tests on two one-third-scale bridge bents that replicated the Dumbarton Bridge in the San Francisco Bay area were presented. In the previous research, a nonlinear, three-dimensional (3-D) computer program was used to determine actual shear distribution in a two-column bridge bent, proving that the column under compression was more vulnerable to shear degradation. This paper presents a new simplified, analytically based fiber model for rigid-cap beam bridge bents. Results from the model showed agreement with previous nonlinear 3-D simulations. The model also provides an assessment of force-displacement performance of piers that allows monitoring of changes in axial load and shear force distributed in each column, resulting in state of stress and/or strain of various column components.
Simplified Two-Column Analytically Based Fiber Model
Two-column rigid-cap beam bridge bents are often used as transverse-to-bridge lateral force-resisting systems. Seismic performance of two-column bridge bents were investigated at the University of California, San Diego, and results of quasi-static tests on two one-third-scale bridge bents that replicated the Dumbarton Bridge in the San Francisco Bay area were presented. In the previous research, a nonlinear, three-dimensional (3-D) computer program was used to determine actual shear distribution in a two-column bridge bent, proving that the column under compression was more vulnerable to shear degradation. This paper presents a new simplified, analytically based fiber model for rigid-cap beam bridge bents. Results from the model showed agreement with previous nonlinear 3-D simulations. The model also provides an assessment of force-displacement performance of piers that allows monitoring of changes in axial load and shear force distributed in each column, resulting in state of stress and/or strain of various column components.
Simplified Two-Column Analytically Based Fiber Model
Donald J Phillippi (author) / Gilbert A Hegemier
ACI structural journal ; 114
2017
Article (Journal)
English
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