Post on 16-Feb-2016
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CE3350 GEOTECHNICAL ENGINEERING
K. Rajagopal
Professor gopalkr@iitm.ac.in
Ext # 4263
Construction of Sikkim airport
Construction of airport at Gangtok, Sikkim by Ms/ Maccaferri India
Construction of 33 m high embankment at Shillong bypass Road
Uttarakhand disaster – land slip/land slide
Uttarakhand disaster - 2013
Uttarakhand – land slide
Typical land slide – failure of road communication
Is it nature’s wrath? or inappropriate management?? could it have been prevented ??
Big Temple – Thanjavur > 1000 years old
Big Temple – Thanjavur > 1000 years old
Ajanta Caves
Ajanta Caves
Ajanta Caves
Machu Pichu, Peru
Series of terraces to reach to the top Terraces served to stabilise the hill slopes, space for agriculture, townships, obstruct the enemy
Apartment building in Kakinada – suddenly sunk into the ground
Taj Mahal, Agra – one of the most visited places in the World
Taj Mahal, sitting strong on the banks of river Yamuna in spite of severe erosion and earthquakes. Inclination of minarets has not changed since its construction in the year 1600’s
Brigade Holiday Inn, OMR, Chennai
SDS-11th dec-11 + SDC 1st jan-12
G.
UB
LB
Part-i Part-ii Part-iii Part-iv
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5th step 4th step 3rdstep 2nd step
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BOH
BOH
Meeting Room
GYM, Health Center Lounge All day Dining
Business Center Foyer
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T
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8
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T 24 30 14/15
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BRIGADE HOLIDAY Inn – CHENNAI
Guest Room Level-1
Guest Room Level-3
Guest Room Level-2
Guest Room Level-4
Guest Room Level-6
5 4
7 3
31
S
3 6 2
Guest Room Level-5
Swimming pool
1st.step
Ramp
View of excavated surface on day of site visit (29th October 2011)
Close-up view of excavation – notice the secant piles on left side – on right side hollow steel pipes and 13m long soil nails driven to stabilize excavation
Sand bags dumped to prevent flow of soil from ground on right side excavation
Support of deep excavation using pre-stressed grouted anchors at Perambur Chennai
Ghat road at Kanakadurga Temple, Vijayawada
Objectives • Widen approach road • Create parking space at
the top of the hill
View of 2-tier Wall from Krishna River
Excavation for the 4-tier wall
ALIGNMENT OF TIER 1 FOR 4 TIER WALL
Top view of the completed 4-tier wall -
Additional Parking space gained at the top of the hill
Kansai International Airport
World’s first airport fully constructed on an artificial island away from land
•Air port is three miles (5 km) off the coast of Japan in Osaka bay
•Area of artificial island 1,275 acres (approximately 5.1x106 sq. m.) almost double the size of IITM campus
•Depth of water is 60 feet (20 meters)
•Seven years of construction time
•9.2 billon dollar budget (1 billion = 1,000 million)
•World’s largest man-made island and the longest building and bridge of its kind in the most massive public works project of the 20th century.
Cross-sectional view of sea wall
Overall view of the sea wall
CONSTRUCTION PROCESS Three main stages of the island construction Remediation (strengthening) of the seabed, Placement of a seawall, Fill to construct the island
While the fill is placed, airport buildings started coming up.
Barge bringing soil all the way from China !!!
Pre-consolidation Methods
Sand drains Pre-fabricated vertical drains Vacuum assisted pre-consolidation
Sand Drains
surcharge fill
sand columns
HPCL Visakhapatnam – failure of road embankment
Mangalore Refineries and Petroleum Limited Complex
Factory buildings on top of the slope
Entire height of slope stabilised using soil nails
Construction of an approach road to an RoB
Zerosite containment landfill pond at Hindustan Zinc, Vizag
Completed Pond in Service
Failure of a road embankment due to deep seated rotation
Bandra Worli Sea Link, Mumbai
What are the problems to be overcome?
Close-up view of the railway track
Cross-section of an embankment with a view of the soil
A view of the railway embankment from the ground level
First sign of distress – notice the tilting of the mile post
Tunnel below a railway track ???? – formed during rainy season