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Limit equilibrium examples

Limit equilibrium analysis examples

Limit equilibrium is an analysis methods where limit state conditions are assumed. For excavations and earth retaining structures this usually means that earth pressures are assumed on both the retained and excavated sides. These pressures may represent a failure state such as active or passive lateral earth pressures, or an assumed redistribution such as diagrams by Peck or FHWA.

The retaining wall is then analyzed to provide moment and force equilibrium, when possible. Support reactions are also calculated, typically by using the tributary area method.

The following examples demonstrate some of the limit equilibrium analysis methods included in DeepEX.

Analysis with Active Earth Pressures Example



Peck Apparent Pressures Example



Passive Earth Pressures Example




Wall Types in DeepEX

  • Soldier pile and lagging walls

  • Secant and tangent pile walls

  • Sheet pile and box sheet pile walls

  • Diaphragm (slurry) walls

  • Soldier pile and tremied concrete (SPTC) walls

  • Combined sheet pile walls

  • Create unlimited wall sections in each project

  • Check quickly different options

  • Extensive international databases of steel beams and steel sheets

  • Simple wall section assignment procedure

  • Manage all properties througn user-friendly dialogs



Support Types in DeepEX

  • Ground anchors (Tieback supports)

  • Struts

  • Slabs

  • Rakers

  • Fixed supports

  • Springs

  • Walers

  • Add waler beams to supports

  • Add passive heelblocks to rakers

  • Graphically add supports

  • Manage support properties through user-friendly dialogs

  • Select support steel sections from implemented lists

  • Optimize supports



External Loads in DeepEX

  • Linear loads and surcharges on ground surface

  • Linear loads and surcharges on the walls

  • Prescribed conditions on the walls

  • External moments on the walls

  • 3D loads (3D surface loads, buildings, footings)

  • Graphically add loads

  • Manage load properties from user-friendly dialogs

  • Elastic load equations



Voice Recognition and Intelligence

  • Models can be created with voice commands

  • Dialogs can be accessed with voice orders

  • Model and staging can be created in seconds

  • Save a lot of time and effort



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