@inproceedings{b768109baf3f4e61b2ebb9ebbd749f1e,
title = "Inelastic shear distribution in prestressed concrete girder bridges",
abstract = "An experimental investigation was conducted on a full-scale prestressed concrete girder laboratory bridge to determine whether linear elastic shear distribution principles are conservative for load rating at ultimate capacity. A secondary goal was to determine whether existing web-shear cracks would be visible in an unloaded state. Two tests were conducted to failure (one near the end with a partial-depth diaphragm and one near the end without) to determine if the most loaded interior girder shed shear force to adjacent girders as it transitioned from uncracked to cracked to failure. Failure during each test was characterized by web-shear crushing and bridge deck punching at the peak applied load. Differences in the behavior of the two ends (with and without partial depth end diaphragm) affected the diagonal crack pattern, shear distribution, and loads at cracking and failure. The effect on loading was less than 10%. Inelastic shear distribution results indicated the girder carrying the most load redistributed shear to the other girders as it lost stiffness due to cracking. Use of linear elastic load distribution factors was conservative considering shear distribution at ultimate capacity. The visibility of web-shear cracks in an unloaded state was found to be a function of stirrup spacing.",
keywords = "Concrete bridge, Failure, Inelastic behavior, Load testing, Prestressed concrete, Shear distribution",
author = "Dymond, {Benjamin Z.} and French, {Catherine E.W.} and Shield, {Carol K.}",
note = "Publisher Copyright: {\textcopyright} 2020 American Concrete Institute. All rights reserved.; Advanced Analysis and Testing Methods for Concrete Bridge Evaluation and Design at the Concrete Convention and Exposition 2019 ; Conference date: 24-03-2019 Through 28-03-2019",
year = "2020",
month = jul,
day = "17",
language = "English (US)",
series = "American Concrete Institute, ACI Special Publication",
publisher = "American Concrete Institute",
pages = "1--19",
editor = "Dymond, {Benjamin Z.} and Bruno Massicotte",
booktitle = "Advanced Analysis and Testing Methods for Concrete Bridge Evaluation and Design",
address = "United States",
}