1. Pisa Clay

The resulting curve is a normalized non-dimensional curve. The curve is scaled with physical soil layer properties defined in the soil layer profile.

1.1. Curve resolution

  • Curve resolution : required resolution for the soil reaction curves

1.2. Curve parameters

For each group of 3 coefficients the corresponding curve parameter is given according to the following \(\frac{z}{D}\) dependency:

\[c = c1 + c2 \cdot \frac{z}{D} \text{ if } c3 = 0\]

otherwise it is

\[c = c1 + c2 \cdot\exp(c3 \cdot \frac{z}{D})\]

The quantities \(z\) and \(D\) are the subsurface depth and pile diameter, respectively.

See also Parameterized Pisa Curves.

1.2.1. Lateral displacement force (p-v)

Coefficients used to define parameters for lateral force-displacement (p-v) soil reaction curve:

  • p-v curve parameter k (initial stiffness).

  • p-v curve parameter n, \(0 \leq n \leq 1\).

  • p-v curve upper X-value.

  • p-v curve upper Y-value.

1.2.2. Moment rotation (m-t)

Coefficients used to define parameters for moment-rotation (m-t) soil reaction curve:

  • m-t curve parameter k (initial stiffness).

  • m-t curve parameter n, \(0 \leq n \leq 1\).

  • m-t curve upper X-value.

  • m-t curve upper Y-value.

1.2.3. Bare shear load

Coefficients used to define parameters for base shear load soil reaction curve:

  • Base shear curve parameter k (initial stiffness).

  • Base shear curve parameter n, \(0 \leq n \leq 1\).

  • Base shear curve upper X-value.

  • Base shear curve upper Y-value.

1.2.4. Base moment

Coefficients used to define parameters for base moment soil reaction curve:

  • Base moment curve parameter k (initial stiffness).

  • Base moment curve parameter n, \(0 \leq n \leq 1\).

  • Base moment curve upper X-value.

  • Base moment curve upper Y-value.