WALLS-Retain

Calculation of Retainment walls due to DIN/EAB/EAU

The Working Group for Excavations of the German Society for Geotechnics publishes its Recommendations for Computations on Excavations in the "EAB". These recommendations are applied by the program. Buildings and structures in the cities and new constructions in high density areas place large requirements against the safety of deep excavations. New construction methods have been developed and known sheeting methods have been improved. Extensive statics computations of the excavation walls will be necessary, in order to calculate the existing safety level. The exploration of several structural variants makes an optimal utilization of the bearing reserves possible. Grout anchors in one or in several layers are increasingly used for the anchorage of the excavation walls.

Performance characteristics

  • Various Wall types : Soldier H-Beam wall, drilling pile wall, In-situ concrete wall like bored and secand pile wall or diaphragm wall, sheet pile wall etc.
  • Calculation according to old and new DIN 1054, SIA 262, OENORM and Eurocode
  • The bending stiffness of the wall may be variable or section wise constant at any distances
  • Active, increased or neutral earth pressure according to classical DIN, Coulomb or Culmann methods
  • Can access the extended soil data base that is common to all FIDES geotechnics programs
  • All possible earth pressure redistributions according to various design codes are available
  • Arbitrary load groups as permanent, life load, limited and unlimited surchage loads and wall loads (H, M), different load-figures per surcharge load
  • Any types of supporting measures : Anchors or Struts
  • Anchors may be set active or pasive at any construction stage
  • Any number of excavation and backfill phases
  • Simple data transfer to other FIDES geotechnics programs, for example WALLS-FEA, FIDES-SlipCircle or FIDES-GeoStability
  • Safety against ground failure by means of Slip Circle verification
  • Automatic calculation of the radius and the center of the Slip Circle or of a user predefined Slip Circle geometry
  • Graphical presentation and output plot of the Slip Circles
  • Any number of soil layers, geometries and ground levels
  • Any number of supports : prestressed, elastic or stiff, Anchors or Struts. Calculation of the apropriate anchor length by analysis of safety against deep-seated failure
  • For any excavation stage it can be defined : horizontal active and passive earth pressure, water pressure and bedding module variation
  • Earth pressure according to Culmann/Gudehus
  • Elastic and prestressed Anchors
  • Safety against hydraulic ground failure, systems with several groundwater storeys
  • The water pressure values can be imported from the ground water flow and free water surface calculation of the program FIDES-Flow 

Results

  • Many types of graphical results in the graphics browser, for example : System, Forces, Earth pressure, Deformation, Contsruction plot, Slip circle
  • Export to various formats : wmf, emf, hpgl, dxf
  • Envelop graphs  of extreme values
  • Languages of output : English, German
  • All results very detailed in ANSI-Format
  • Results browser, titles of texts appear in a tree structure representation and can be selected easily

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