Mechanical Behavior of Steel–Concrete Joint in a Bidirectional Curved Pylon of a Long-Span Cable-Stayed Bridge
Publication: Journal of Bridge Engineering
Volume 28, Issue 3
Abstract
The complex mechanical behavior of a steel–concrete joint (SCJ) in a bidirectional curved pylon of a cable-stayed bridge is investigated using finite-element analysis (FEA) and a 1:4 scaled full-section model test. Formulas for the stress distribution and stress nonuniformity coefficients of the concrete in the SCJ are proposed to evaluate the force transmission characteristic of the SCJ. The FEA results indicate that variations in the section stiffness at both the bearing plate and the end of the steel structure result in abrupt stress changes and distinct spatial force characteristics of the SCJ. The experimental results reveal that the SCJ exhibits better force resistance than the concrete and steel transition segments, and the force transfer is dominant through the bearing plate. The proposed formulas are validated by using the measured results, which reveal significant nonuniformity in the stress distribution. The stiffness variation at the bearing plate, nonuniform concrete stress distribution, and spatial force characteristics should be considered during the design of similar SCJs in spatial pylons.
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Acknowledgments
This study was supported by the Shudao Investment Group Science and Technology Program (Grant Number SRIG2020GG0001).
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 28 • Issue 3 • March 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Mar 21, 2022
Accepted: Nov 13, 2022
Published online: Jan 4, 2023
Published in print: Mar 1, 2023
Discussion open until: Jun 4, 2023
ASCE Technical Topics:
- Bridge engineering
- Bridge tests
- Bridges
- Bridges (by material)
- Bridges (by type)
- Cable stayed bridges
- Cables
- Curvature
- Engineering fundamentals
- Equipment and machinery
- Field tests
- Finite element method
- Geometry
- Joints
- Mathematics
- Methodology (by type)
- Numerical methods
- Steel bridges
- Stress (by type)
- Stress distribution
- Structural analysis
- Structural engineering
- Structural members
- Structural systems
- Tests (by type)
- Wood bridges
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