TYPES OF SHEAR FAILURE UNDER FOOTING

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General shear failure
Local shear failure
Punching shear failure

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Language: en

Added: Jun 14, 2020

Slides: 6 pages

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OVERVIEW
•General shear failure
•Local shear failure
•Punching shear failure

GENERAL SHEAR FAILURE
•Itisacharacteristicofnarrowfootingofshallowdepths
•Restingonstrongdensesoilthatarerelatively
incompressible.

LOCAL SHEAR FAILURE
•Forweaker,morecompressiblesoilandwiderordeeper
footings,thefailuremaybetakenaslocalshearfailure
ofpunchingshearfailure.
•Localshearfailureischaracterizedbywelldefinedslip
linesbelowthefootingbutextendingonlyashort
distanceintotheoilmass.

PUNCHING SHEAR FAILURE
•Inhighlycompressiblesoilsthepunchingshearmodeof
failureresults.
•Thisischaracterizedbylackwelldefinedsliplines
belowthefooting.Theverticalmovementoffootingis
primarilyduetocompressionofsoilbelowthefooting
withthesoilonthesidenotbeinginvolved.