Method for designing and forming a retaining wall in the ground, and retaining wall

A method for designing and forming a retaining wall in the ground having a required target wall stiffness, comprising

• a soil-based mortar, which is produced in the ground by mixing soil material and a cement suspension, and
• vertically aligned support beams, which are positioned in the soil-based mortar and arranged therein, wherein the arrangement of the support beams is designed to have an overall beam stiffness,
• wherein
• the support beams are arranged such that the laid-out overall beam stiffness is less than the required target wall stiffness, and
• when designing and arranging the support beams, an additional stiffness component is added that results from at least one adjacent wall section made of soil-based mortar, the additional stiffness component Mc,d on a support beam is determined by the at least one adjacent wall section made of soil-based mortar in accordance with the formula:
• M
• c
• ,
• d
• =
• D
• c
• ,
• d
• ×
• e
• c
• ,
• d
• ,
• where:
• Dc,d=Ac,x×0.85×fcd where:
• fc,d=ac×fm,k:
• ΥM and
• where:
• Dc,d is the design compressive force of the soil-based mortar;
• the index c (concrete) denotes a variable that is associated with the soil-based mortar;
• the index d (design) denotes a rated variable, i.e., during the determination, corresponding partial safety factors were taken into account;
• and
• the index x relates to the concrete compressive zone, i.e., here, to the compressive zone of the soil-based mortar.