dx-punch 1.0.0

Punching-shear calculation package

Features

Design according to Eurocode provisions (EN-1992-1)

1. Evaluation of basic control perimeters (§6.4.2)

   • Support for columns of arbitrary polygonal shape.
   • Support for drop panels.
   • Automatic classification of columns into 'internal', 'edge', and 'corner'.

2. Evaluation of design shear stress (§6.4.3) for biaxial eccentricity of all classes of columns, using three methods:

   • Analytical via numerical evaluation of the perimeter modulus W1 (6.40) in both directions.
   • Approximate through Eq. (6.43).
   • Simplified through §6.4.3(6).

3. Design checks according to §6.4.4.

   • Support for declaration of soil-pressure on raft-slabs:

     • Uniform
     • Discrete pressure field

4. Evaluation of a code-compliant shear-cage layout according to provisions of §6.4.5.

Not yet supported:

• Consideration of openings in the evaluation of basic control perimeters (§6.4.2(3)).
• Favourable effect of in-plane normal stresses in Eq. (6.47).
• Evaluation of radial layout of shear reinforcement (Fig. 6.22A).

API

We use the dx stack of packages (dx-utilities, dx-base, dx-eurocode) that enables:

1. Geometric representation of structural elements using shapely.
2. Geometric operations and linear algebra utilities with numpy and mathutils.
3. Use of dx_utilities.fields for various representations.
4. Visualization of results using matplotlib.
5. Support for tabular reports using pandas.

Contribute

Source code lives in https://gitlab.com/d-e/dx-punch.

Public API

See the documentation pages.