EFFECT OF CONCRETE CRUSHING ON FLEXURAL STRENGTH OF STEEL-CONCRETE COMPOSITE GIRDERS

EFFECT OF CONCRETE CRUSHING ON FLEXURAL STRENGTH OF STEEL-CONCRETE COMPOSITE GIRDERS

The ultimate flexural strength of composite steel girders with compact sections is examined through experimental investigation and elasto-plastic finite displacement analyses to develop a reduction factor of the ultimate flexural strength. A two-point loading test of a composite girder was carried o...

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Veröffentlicht in:Doboku Gakkai Ronbunshuu A 2007, Vol.63(3), pp.475-485
Hauptverfasser: GUPTA, Vivek Kumar, OKUI, Yoshiaki, INABA, Naofumi, NAGAI, Masatsugu
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Sprache:eng
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composite I-girder
concrete crushing
reduction factor
ultimate flexural strength
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container_end_page 485
container_issue 3
container_start_page 475
container_title Doboku Gakkai Ronbunshuu A
container_volume 63
creator GUPTA, Vivek Kumar
OKUI, Yoshiaki
INABA, Naofumi
NAGAI, Masatsugu
description The ultimate flexural strength of composite steel girders with compact sections is examined through experimental investigation and elasto-plastic finite displacement analyses to develop a reduction factor of the ultimate flexural strength. A two-point loading test of a composite girder was carried out to verify the numerical modeling by comparing the experimental and numerical results. Then, a parametric study was performed using finite element analyses to investigate the effect of concrete crushing on the flexural strength of composite girders constructed using SM570 grade steel. Observations made by comparison of the ultimate flexural strength obtained from the experimental and numerical results with that according to the AASHTO and Eurocode show that the existing reduction factor equations are conservative and can be relaxed when the strength is controlled by crushing of concrete slab. A new reduction factor for the ultimate flexural strength for composite I-girders under positive bending is proposed.
doi_str_mv 10.2208/jsceja.63.475
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subjects composite I-girder
concrete crushing
reduction factor
ultimate flexural strength
title EFFECT OF CONCRETE CRUSHING ON FLEXURAL STRENGTH OF STEEL-CONCRETE COMPOSITE GIRDERS
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