2017 Volume 73 Issue 2 Pages 195-211
The earth pressure calculation formula based on Coulomb's earth pressure theory that are currently used in the design of retaining wall cannot be used if cohesion is included. Also, the calculation formula applicable to the actual slopes, such as case where the gradient of slope changes variously, does not exist.
In this paper, a new earth pressure calculation formula based on Coulomb's earth pressure theory is proposed for resolving this kind of issue. In addition, in order to verify the validity of the proposed this formula, the calculation results obtained according to conventional formula and Trial Wedge Method were compared with the results from this new formula.
Also, the conventional formula during earthquake based on Rankine's earth pressure theory is complex. In this paper, this formula is simplified and formula of angle of slip line during earthquake is proposed. Furthermore, in order to confirm the effectiveness of this new formula was verified in comparison with conventional method.