Title
Fatigue behavior evaluation of full-scale OSD-UHPC composite bridge deck system
Author
Shi, Z. (TU Delft Steel & Composite Structures; Tongji University)
Su, Qingtian (Tongji University; Shanghai Engineering Research Center of High Performance Composite Bridges)
Kavoura, Dr. Florentia (TU Delft Steel & Composite Structures) 
Veljkovic, M. (TU Delft Steel & Composite Structures)
Date
2023
Abstract
To investigate the fatigue performance and fatigue damage process of the Orthotropic Steel Deck (OSD) - Ultra-High Performance Concrete (UHPC) composite bridge deck, a two-span continuous full-scale specimen was designed and tested under cyclic loading. Test results showed that the fatigue cracks firstly initiated near the lower part of the weld toe of the rib-to-cross beam welded joint, and then cracks along the weld length of the U-rib butt-welded joint developed. These observations followed by the OSD-UHPC interface debonding. The U-rib bolted joint exhibited better fatigue resistance than the U-rib butt-welded joint. The S-N curves of the rib-to-cross beam welded joint, the U-rib butt-welded joint and the U-rib bolted joint were established based on existing fatigue test data, and were compared with provisions in design codes. The S-N curves from the beam test for the short-headed stud connectors were compared with that from the push-out test. And the established S-N curves with 95% survival probability from the push-out test could be used to assess the global fatigue performance of the composite deck. Considering the durability-based critical crack width of UHPC, the established tensile S-N curve regarding critical UHPC crack width of 0.05 mm could be used to evaluate the anti-fatigue cracking ability of the UHPC layer in the composite deck system.
Subject
OSD-UHPC composite deck
Fatigue damage
S-N curve
Fatigue behavior evaluation
Fatigue strength
To reference this document use:
http://resolver.tudelft.nl/uuid:fdb6d968-2d3b-4527-9302-8930174d19e7
DOI
https://doi.org/10.1016/j.engstruct.2022.115179
Embargo date
2023-07-15
ISSN
0141-0296
Source
Engineering Structures, 275 (Part A)
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2023 Z. Shi, Qingtian Su, Dr. Florentia Kavoura, M. Veljkovic