Article by Davids, Schanck and Guzzi assesing friction-type shear connectors for FRP bridge girders published in “Materials”

Article by Davids, Schanck and Guzzi assesing friction-type shear connectors for FRP bridge girders published in “Materials”

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Orono, Maine — An article by ASCC researchers Dr. Bill Davids and Dr. Andrew Schanck was published, with Dante Guzzi has been published in a special issue “ Research on Mechanical Properties of Construction Materials” of the journal “Materials.” The paper, titled, Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks” looks at other – less studied – uses of FRP in bridge superstructure members.

Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks

Authors: William G. Davids, Dante Guzzi, and Andrew P. Schanck

Academic Editors: Patryk Rozylo, Hubert Debski and Katarzyna Falkowicz
Materials 2022, 15(9), 3014; https://doi.org/10.3390/ma15093014
Received: 25 March 2022 / Revised: 18 April 2022 / Accepted: 19 April 2022 / Published: 21 April 2022
This article belongs to the Special Issue Research on Mechanical Properties of Construction Materials

Abstract

This paper details the development and experimental assessment of a friction-type connector, designed to transfer shear flow between the top flange of a fiber-reinforced polymer (FRP) tub girder and a composite concrete deck for bridge applications. In contrast with previously used bearing-type connectors, this system relies on a deformed FRP surface to transfer shear via direct interlock with the concrete deck. The connector is materially efficient, simple to fabricate, can be used with lower-grade structural or stainless-steel fasteners, and provides a high degree of interface stiffness. Six compression-shear specimens were tested to assess the connector fatigue resistance and ultimate connection strength. Additionally, two short beam specimens were tested in three-point bending, one of which was subjected to fatigue loading. Based on the compression-shear tests and short beam tests, the connection exhibited strength exceeding that predicted by AASHTO for frictional concrete-concrete connections. The connection strengths were significantly greater than the factored demand required by AASHTO for a typical model FRP bridge girder. The cyclic loading of the connection in both compression-shear and beam bending showed that connection stiffness and strength do not significantly degrade, due to the application of 1 × 106 to 6 × 106 cycles of traffic-induced factored fatigue load.

Keywords: FRP compositesshear connectorsfatigue testingcomposite beams


Citations:

MDPI and ACS Style

Davids, W.G.; Guzzi, D.; Schanck, A.P. Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks. Materials 202215, 3014. https://doi.org/10.3390/ma15093014

AMA Style
Davids WG, Guzzi D, Schanck AP. Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks. Materials. 2022; 15(9):3014. https://doi.org/10.3390/ma15093014

Chicago/Turabian Style
Davids, William G., Dante Guzzi, and Andrew P. Schanck. 2022. “Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks” Materials 15, no. 9: 3014. https://doi.org/10.3390/ma15093014

Contact: Taylor Ward, taylor.ward@maine.edu

Development and Experimental Assessment of Friction-Type Shear Connectors for FRP Bridge Girders with Composite Concrete Decks

Materials, Special Issue Research on Mechanical Properties of Construction Materials