The theoretical concepts used in the PYWALL software extends beyond the conventional method of analysis and design of flexible retaining walls based on limit-equilibrium theory.
As a difference to conventional pratice, the PYWALL method does not ignore the effects of soil-structure interaction.
The new PYWALL introduces the option to perform computation models of staged constructions.
This is a new and very convenient tool to study and to compare the predicted deflection, bending moment, and shear at different stages of construction based on a simplified approach.
Another new feature that is introduced with PYWALL is the option to conduct short-term and long-term analyses.
Users can now define two different soil properties for short and long-term analyses to quickly evaluate and compare the different responses of the modeled wall.
New p-y curve criteria for Weak Rock is introduced in PYWALL and added to the previously existing six soil types.
The interface in PYWALL reflects various improvements to facilitate data input and to reduce the learning curve of the program.
For instance, required input of soil properties now varies according to the selected soil type and new improved graphics references are used in various menus.
Modern methods of analyses of the behavior of reatining structures depend largely on employment of realistic soil conditions and relevant details of the structural system.
Therefore, a rational method of analysis and design must include the nonlinear soil-resistance-isplacement relationships, shaft spacings, penetrations depth and structural properties.
The program PYWALL considers soil-structure interaction by using a generalized beam-column model and analyzes the behavior of a flexible retaining wall or soldier-pile wall with or without tiebacks or bracing systems.