Standard: WRC BUL 142

EXPERIMENTS ON WIDE-FLANGE BEAMS UNDER MOMENT GRADIENT; VARIABLE REPEATED LOADING – A LITERATURE SURVEY

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Scope:

This report presents the results of experiments performed on 24 wide-flange steel beams subjected to loads causing a moment gradient. The primary objective of the investigation was to relate the flange slenderness ratio to the rotation capacity; however, an attempt was also made to explore the effects of changes in moment gradient, web slenderness and bracing spacing. The specimens were of G40.12 steel, which has a specified minimum yield stress of 44 ksi. Each specimen was deformed well into the unloading range. For members having small values of L/ry, (high moment gradient), unloading was triggered by local deformations, and the flange slenderness ratio, b/t, had a definite effect upon the delivered rotation capacity. For tests on specimens having low moment gradients, unloading was due primarily to large lateral deformations and for these specimens the b/t ratio had very little effect.

Organization: Welding Research Council
Document Number: wrc bul 142
Publish Date: 1969-07-01
Page Count: 38
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active
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