2018 Volume 74 Issue 1 Pages 34-49
Currently, at the calculation of the earth pressure in the design of the retaining wall, a formula based on the theory of Coulomb or Rankine assuming straight slip is used.
However, there is a limit to the scope of application of Rankine's formula (formula assuming two straight slips.) at present. For example, in the case of calculating the earth pressure that is considering cohesion, Rankine's formula is applicable only to a case with a simple horizontal plane at the ground surface on the back of the retaining wall.
In this paper, in order to solve this issue, a new earth pressure calculation method assuming straight slip by drawing method is proposed, which is a different approach from the conventional method. Also, a new earth pressure calculation formula derived from this new method is proposed. In addition, in order to verify the validity of this proposed formula, the calculation results obtained according to conventional formula and Trial Wedge Method were compared with the results from this new formula.