Issue 53

A. Namdar, Frattura ed Integrità Strutturale, 53 (2020) 285-294; DOI: 10.3221/IGF-ESIS.23.22 290 R ESULTS AND DISCUSSION he safe bearing capacity of the soil is a critical factor in the geotechnical engineering design and plays the main role in structural stability. The enhancement of the safe bearing capacity of the soil foundation is considered important in geotechnical design basis. The soil mixture significantly changes the safe bearing capacity of the soil foundation. The soil mixture process develops safe bearing capacity in the high tolerance, it occurs because of the soil mechanical properties interaction. After the performance of the soil mixture, there is a complex result that requires to be investigated for enhancing structural stability. Fig. 2 shows the distribution of the optimum moisture content, density, angle of friction, cohesive and safe bearing capacity of the mixed soil are following different mechanisms. Fig. 3 shows the distribution of the safe bearing capacity associated to characterized optimum moisture content, density, angle of friction and cohesive of the mixed soil. Safe bearing capacity exhibits different mechanisms because of the mechanical properties of the soil interaction, and the safe bearing capacity develops differently at each soil mixture model. Fig. 3 is based on calculation done to show the direct relationship between different soil mechanical properties and the direct relationship between the safe bearing capacity and each individual soil mechanical property, in order to analyze the influence of each single mechanical property of the mixed soil on safe bearing capacity. However, to find influence all mechanical properties on safe bearing capacity, ANN, that is a soft computing technique, is necessary. Artificial neural network. The ANN gathering all mechanical properties affects the safe bearing capacity. OMC (%) OMC (%) 20.4 21.6 22.8 24.0 11 22 33 0 14 28 42 56 0 1100 2200 3300 9.2 13.8 18.4 23.0 20.4 21.6 22.8 24.0 Density (kN/m 3 ) Density (kN/m 3 ) 20.4 21.6 22.8 24.0 17.0 25.5 34.0 42.5 Angle of Friction (deg) Angle of Friction (deg) 17.0 25.5 34.0 42.5 0 14 28 42 56 Cohesive (kN/m 2 ) Cohesive (kN/m 2 ) 0 14 28 42 56 9.2 13.8 18.4 23.0 0 1100 2200 3300 S.B.C (kN/m 2 ) OMC (%) 20.4 21.6 22.8 24.0 Density (kN/m 3 ) 11 22 33 Angle of Friction (deg) 0 14 28 42 56 Cohesive (kN/m 2 ) S.B.C (kN/m 2 ) S.B.C (kN/m 2 ) Figure 3: The prediction of safe bearing capacity (S.B.C) according to the mechanical properties. Fig. 4 shows the safe bearing capacity frequency. The histogram presented in Fig. 4 is based on a soft computing technique (SCT) for the evaluation of the frequency of repeated safe bearing capacity, and it supports soil mixture design. The histogram is depicted for safe bearing capacity prediction analysis and it shows the distribution of values for the probability