Download - Liquefaction PPT
Introduction to
LiquefactionLiquefaction
What is Liquefaction? Liquefaction-when the strength and
stiffness of a soil is reduced due to earthquake shaking
Liquefaction occurs in saturated soils
Niigata 1964 and Kobe, Japan 1995
Earthquake Video Liquefaction In Niigata Earthquake 1964 Liquefaction Demo Liquefaction Demo 2
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Outline Background Effect of liquefaction Types of failure Remedial Measures
History Serious attention because of Japan, Alaska and Nigata
earthquake in 1964.
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Types of Failure
Cyclic Mobility
Overturning
Sand Boiling
Remedial Measures
Wrap Up1. Why is liquefaction dangerous?
2. What do you need for liquefaction to occur?
A. dry soil and an earthquakeB. saturated soil and an earthquake
C. saturated soil
Wrap Up1. Why is liquefaction dangerous?Liquefaction can cause buildings and infrastructure to collapse.2. What do you need for liquefaction to occur?
A. dry soil and an earthquakeB. saturated soil and an earthquake
C. saturated soil
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