Crack Resistance of Steel–Concrete Hybrid Joint between Concrete Girder and Steel–Concrete Composite Girder in Long-Span Cable-Stayed Bridge under Hogging Moment
Publication: Journal of Bridge Engineering
Volume 28, Issue 2
Abstract
The steel–concrete hybrid joint (SCHJ) between a concrete girder and a steel–concrete composite girder in a cable-stayed bridge has a high risk of cracking under a hogging moment. This study investigated the crack resistance of the SCHJ. Based on a specific bridge, a half-scale SCHJ specimen was designed and tested. A particular loading setup was developed to reproduce the actual loading conditions of the SCHJ. The crack developments and strain distributions of the SCHJ specimen were observed. The SCHJ with fully infilled concrete cracked earlier than the composite girder. A numerical model was developed using the ABAQUS software version 6.14, and the results obtained by this model were in good agreement with the experimental results. The crack development laws of the concrete deck at typical sections in the SCHJ and composite girder in this bridge were derived. An analytical model was proposed to describe crack development in the SCHJ and composite girder. An SCHJ with partially infilled concrete was proposed to improve the crack resistance of the SCHJ compared with the composite girder, and design recommendations were provided for the novel SCHJ with partially infilled concrete in this bridge.
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Acknowledgments
This study was supported by the National Key Research and Development Program of China (Grant No. 2021YFB1600301), National Natural Science Foundation of China (Grant No. 52078436), Sichuan Science and Technology Program (Grant Nos. 2022JDRC0012 and 2022NSFSC0455), and Opening Funding Project of the Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of the China Earthquake Administration.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 28 • Issue 2 • February 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jun 6, 2022
Accepted: Oct 4, 2022
Published online: Nov 17, 2022
Published in print: Feb 1, 2023
Discussion open until: Apr 17, 2023
ASCE Technical Topics:
- Bridge engineering
- Bridges
- Bridges (by material)
- Bridges (by type)
- Cable stayed bridges
- Cables
- Composite bridges
- Concrete bridges
- Continuum mechanics
- Cracking
- Design (by type)
- Engineering fundamentals
- Engineering mechanics
- Equipment and machinery
- Fracture mechanics
- Girder bridges
- Girders
- Load and resistance factor design
- Load factors
- Plate girders
- Solid mechanics
- Structural design
- Structural engineering
- Structural members
- Structural systems
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