Free-field soil displacement due to lateral spreading load during earthquake

Dear sir,

During earthquake, soil liquefaction might be a concern especially when non-liquefied layer is underlying by liquefied soil.

Lateral spreading load due to non-liquefied soil movement on top of liquefied layer might be critical for pile design.

In case of geotechnical engineer gave an input as free-field soil horizontal displacement profile along the pile depth.

How can we implement this information in SACS i.e. p-y modification or other methodologies ?

It is a movement of at the boundary end of spring not at the pile side.

Can you help to suggest the modelling technique for this issue ?

Regards,

Kasiphon

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