Soil Curves

In the Visual-Q4M it is possible to perform two types of dynamic analysis:

• Elastic linear analysis: the properties Shear Modulus and Damping do not change during the calculation and you can make only a single run. For perform this type on analysis do not select none curve for the lithologies.
• Equivalent linear analysis: the properties of Shear Modulus and Damping change during the calculation and you can make more run. For perform this type on analysis you can select a variation curve for each lithology

The internal database can be updated automatically with a series of standard curves:

• EPRI (1993) PI = 10
• EPRI (1993) PI = 30
• EPRI (1993) PI = 50
• EPRI (1993) PI = 70
• SEED et al. (1986) Gravel
• SEED et al. (1986) Sand - Lower Bound
• SEED et al. (1986) Sand - Average
• SEED et al. (1986) Sand - Upper Bound
• IDRISS et al. (1990) Clay
• IDRISS et al. (1990) Sand
• IDRISS et al. (1990) Sand Mean
• VUCETIC & DOBRI, IP = 0
• VUCETIC & DOBRI, IP = 15
• VUCETIC & DOBRI, IP = 30
• VUCETIC & DOBRI, IP = 50
• VUCETIC & DOBRI, IP = 100
• VUCETIC & DOBRI, IP = 200
• ROLLINS et al. (1998)
• DARENDELI & STOKOE (2001)

It is can enter any stress functions for Shear Modulus and Damping Ratio.