Video Example: Cofferdam Design - Braced Sheet Piles and a Base Slab
In this example we will design a cofferdam system, supporting a 20ft excavation. The model and analysis have been designed with DeepEX - Shoring Design Software, using the classical limit equilibrium analysis method.
A. Project Description
This design example presents a case with a cofferdam wall system, supporting a 20ft excavation. The Sheet Piles (AZ 19) are supported by a pile strut (PP 18x0.5) and a 2ft thick concrete slab is constructed at the excavation base. Three soil layers are considered, and a 0.6 ksf surcharge is included at the top. The figure below presents the completed excavation model.
The analysis is performed with the Limit Equilibrium Analysis method.
B. Example Video
C. Cofferdam - Limit Equilibrium Analysis Results
DeepEX can perform full structural and geotechnical design ot all project items (walls and supports). The calculated results (soil and water pressures, wall moment, shear and displacement diagrams, support reactions, structural and geotechnical check ratios and more) can be presented both in tables and graphically on the model area. DeepEX can analyze and present results for all construction stages, allowing the designer to review the full project history and take important descisions for the most efficient model optimization.
The following images present some of the calculated graphs.