Retaing wall under seismic load
Retaing wall under seismic load
(OP)
I need to design a concrete retaining wall. In the design, the seismic load has to be considered. I did design a dam which considered seismic load from water behind but I have never designed such a retaining wall which seismic load from earth behind need to be considered. I use similar idea to try. It seems that I need a huge section of retaining wall because of the seismic load. I wonder if any one here who has similar experience can give me some idea as to how to design this retaining wall or tell me any book or example which I can read. Thanks!






RE: Retaing wall under seismic load
Principles of Foudation Engineering by Das and
Soil Dynamics by Prakash
All you really need to do is to determine the active earthquake pressure using the Monoabe-Okabe method or similar and also include the mass of the wall in your lateral forces. The mass of the wall is multiplied by the necessary accerlation coefficient. The final difference is the active earthquake force acts at 1/2H and not 1/3 as with traditional soil loads.
The above is for overturning and sliding analysis. It does not consider that there is a ground failure due to liquefaction.
I hope this helps.
Regards,
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RE: Retaing wall under seismic load
The safty factor should remain the same as 1.5 for sliding and 2 for overturning?
RE: Retaing wall under seismic load