Seismic Design of Slopes I - Indian Institute of Technology ...
Seismic Design of Slopes I - Indian Institute of Technology ...
Seismic Design of Slopes I - Indian Institute of Technology ...
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<strong>Seismic</strong> coefficient<br />
• <strong>Seismic</strong> coefficient can be slightly lower than peak<br />
average acceleration (a avg ) max <br />
a avg<br />
0.5<br />
0.8<br />
• From example<br />
a max = 0.60g<br />
(a avg ) max = 0.22g<br />
k h = 0.11g to 0.18g<br />
k<br />
h<br />
<br />
g<br />
max<br />
23<br />
<strong>Seismic</strong> coefficient (contd….)<br />
• Terzaghi (1950)<br />
• 0.1g for severe earthquake (RF Intensity IX)<br />
• 0.2g for violent, destructive earthquake (RF X)<br />
• 0.50g for catastrophic earthquake<br />
• Mercuson (1981)<br />
• <strong>Seismic</strong> coefficient should be one-third to one-half <strong>of</strong> the<br />
PGA the embankment is subjected to<br />
What do you Think?<br />
24<br />
12
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