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Combined Sheet Pile Walls - Design with DeepEX

Combined Sheet Piles in DeepEX

Combined sheet pile walls can be designed with DeepEX software in the most efficient way. In DeepEX, we can design and optimize piles combined with steel sheets in 3 simple steps:

1. Define our sheet piles type and structural section.

2. Create our model in minutes in the software graphical interface, or using the powerfull model wizard (all construction stages).

3. Run the analysis, review the results in each stage and optimize the model (manually or with the use of the DeepEX autimatic optimization tools).

The following paragraphs present how we can follow these steps within the software and achieve an efficient model optimization in minutes.

Figure: A Combined Sheet Pile Wall Section in  DeepEX Software

Step 1: Define the Combined Piles Type and Sections

Selecting the Combined Piles Type

At any time, we can access and edit the structural section of our walls on the model area, or through the related tab of the model wizard. There, we can select our combined piles type (H beams, Double H beams or Pipes combined with Steel Sheets). We simply need to press on any of the available pile types buttons:

Defining the Combined Piles Structural Section

Based on the selected piles type, the user can select any of the available sections from our extensive implemented databases. The software has implemented all the section properties for several standard combined sections.

For custom sections, the user can define the steel beams section and the sheet pile sections independently. Then, the combined section pile properties (Section Modulus, Moment of Inertia) need to be defined by the user manually.

Define where the Sheet Piles stop

The combined sheet pile walls are taken as continuous wall types along the wall (the sheet piles expand to the full wall depth). In some ocations, we need to stop the sheet piles below the excavation level, but above the pile tip. This can be simulated within the software by defining a custop wall passive elevation to mark the elevation where the sheet piles stop, and define the widths for the calculation of the active, passive and water pressures below the custom elevation, where the wall is no longer continuous.


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Step 2: Create the Model (All Construction Stages)

In DeepEX we can graphically add construction stages and draw the model on the model area stage by stage, or use the model wizard to create a model with all construction stages in seconds. Either way, we need to create a detailed staging, starting from at rest conditions in an initial stage, and then step by step generate new stages with each excabation and support installation level. DeepEX will analyze and present results for each stage, allowing us to review the full model construction process, identify the most critical stage and optimize our structural sections and support locations in the most efficient way.

Figure: Dead-man Wall Model - Construction Stages in  DeepEX Software

Step 3: Review the Results and Optimize the Model

DeepEX can analyze any deep excavation model with several implemented analysis methods (classical Limit Equilibrium, Non-Linear Analysis with elastoplastic springs and Finite Element Analysis). After the analysis is completed, DeepEX software presents all calculation results in tables and in graphs on the model area for each construction stage. We can review all calculated stresses, moment and shear diagrams along with the structural capacities, the support and wall check structural ratios, the wall embedment safety factors and more. This way, we can have a great overview of all structural items designed by the program for each stage, and take important decisions for the efficient model optimization.

We can optimize any model fast either manually by accessing all wall and supports on the model area and edit the structural sections and support locations fast through user friendly dialogs, or use the software automatic optimization tools that can fast check and give us a variety of section solutions for all structural items on the examined model.

A Combined Sheet Pile Wall Designed with DeepEX Software


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