Dear researchers,
I have a question about G0 ref in HSsmall model (Plaxis)
Seismologists gave me a report with the results of determining the speed of P- and S-waves in engineering-geological elements (EGE) using penetration test.
Geologists gave me a report with soil characteristics G0 ref and y0.7 based on triaxial compression. And every EGE has different p ref value (100-400 kPa).
So, e.g. for clay G0 calculated from vs will be (4402 m/s * 0,002 kg/m3=387.2 MPa).
And the result of triaxial test for G0 ref is 160 MPa (p ref=400 kPa).
I do not quite understand the difference between the first and second value.
So with p ref=400 kPa the speed vs will be equal to ((sqrt(160/0.002))=280 m/s? Why?
G is function of strain
In triaxial and shear wave velocity the strain range is different.
Kindly have a look on Seed and Idriss contribution on topic.
Thanks
First you need to get yourself clearer about the meaning of G0. Second better to utilsie the result of triaxial compression test as engineering report generally provides you a range of specific value which highly depends upon local soil nature and mechanical behaviour.
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