Title:
Nonlinear Finite Element Analysis of Interface Shear Transfer in Various Testing Methods
Author(s):
Adham Abu-Abaileh and Matthew Soltani
Publication:
Structural Journal
Volume:
123
Issue:
1
Appears on pages(s):
61-74
Keywords:
clamping force concept; cohesive forces evaluation; connection geometry variability; empirical validation methods; interface crack propagation; material property definition enhancements; shear-friction mechanisms
DOI:
10.14359/51746757
Date:
1/1/2026
Abstract:
This study employs advanced nonlinear finite element (FE) modeling to investigate interface shear transfer (IST) behavior in reinforced concrete connections, a crucial factor for bridge durability and safety. The research examines shear-transfer mechanisms at the interface between precast girders and cast-in-place deck segments through three experimental methods: beam, pushoff, and Iosipescu four-point bending tests. FE simulations evaluated stress distributions, IST capacity, and failure mechanisms. Validation against experimental data shows that the Iosipescu test provides the most accurate representation of IST behavior, exhibiting a stress distribution error margin of only 1%, closely aligned with observed failure patterns. In contrast, the pushoff test showed a 30% deviation from empirical data, indicating reduced accuracy in predicting real-world IST behavior. These findings highlight the importance of incorporating the Iosipescu test into IST evaluation protocols, as its greater precision enhances design methodologies for concrete bridges, reduces structural failure risks, and informs future updates to IST-related codes.
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