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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
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Anearthquakeofevenmoderateintensitycanliquefythe
loosesoilinsomepartsofthecityandbringbuildings
cras ng own. newstu y yt e n an nst tuteo
Technology,Bombay
(IIT
B)
states
that
foundations
of
buildingsneedtotakesoilintoaccountifthestructures
havetowithstandstronggroundaccelerationsduringan
earthquake.
(Hindustan
Times,
Apr
28,
2015)
soilusuallysandyorclay flowslikemuddywater.The
studyobservedthatreclaimedareasofthecitywillbe
moreprone
o
que ac on.
e
um a
reg on,w c
includesThaneandNavi Mumbai,fallsundermoderately
seismiczone3withapossibilityofearthquakebetween6
DrGanesh SKame
(PhD_IITB,
Professor,
CivilEngineering,MHSSCE)
and6.5magnitude.Thereare23faultlinesthatcancause
groundmotion
in
and
around
the
city.
1
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
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EffectofLiquefaction
2
DrGaneshSKame
(PhD_IITB,
Professor,
CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
How
que ac on
occurs
3
DrGaneshSKame
(PhD_IITB,
Professor,
CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
EarthquakeriskinIndiaandMumbai
4
DrGanesh SKame
(PhD_IITB,
Professor,
CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
EarthquakeriskinIndiaandMumbai
Mumbai
Maharashtra
(fourth
Earthquakeprone
citiesinIndia)MumbaifallsintheZone4ofthe
se sm czone v s onsw c ma es tqu tevu nera e
todamage.WeallknowMumbai islocatedonthe
coastalline,
which
increases
the
risk
of
facing
tsunamilikedisasters.Mildtostrongearthquakesare
verycommoninpartsofMumbai.Mildearthquakes
adjoiningregionsofGujarat.Itshouldbenotedthat
forthelast20years,almostallofthebuildingsin
5
um a ave een es gne an u eep ng n
mindthat
the
city
falls
in
seismic
zone
4.
DrGanesh SKame
(PhD_IITB,
Professor,
CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
Whataretheremedies?
Ground Improvement Techniques
Stone Columns
Vibroflotation
Dynamic Compaction
6
Vibro Compaction DrGaneshSKame(PhD_IITB,
Professor,CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
Liquefactionresistant
structures
7Buildingswithpilefoundationsinsandystrata
DrGaneshSKame
(PhD_IITB,
Professor,CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
Principle
8
DrGaneshSKame
(PhD_IITB,
Professor,CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
Pilemade
of
good
concrete
and
steel
will
stop
followingactionduringliquefactionduetoearthquake.
9
DrGaneshSKame
(PhD_IITB,Professor,
CivilEngineering,MHSSCE)
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
Failureof
building
without
pile
foundation
in
sandy/clayeystrata
Dr
Ganesh S
Kame
(PhD_IITB,
Professor,
CivilEngineering)10
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LiquefactionduetoEarthquakeandHowtoManageDamagestothe
Buildings
Remedyover
failure
of
building
foundation
insandystrataduringsoilliquefaction
1. Usingpilefoundation
2. Maintainingintegrityo pi est roug out
3. Maintainingpropercover
.
5. Increasingcorrosionresistanceoftheconcrete
6. Usin CORROSIONINHIBITORSinconcretein
thearea
subjected
to
aggressive
environment
likeMumbaianditssurrounding.
11
DrGaneshSKame
(PhD_IITB,
Professor,CivilEngineering,MHSSCE)
