Akademik Veri Yönetim Sistemi
JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, sa.5, 2024 (ESCI)
In this study, the effects of the parameters such as angle of internal friction and unit weight of the filling material, on the factor of safety of the geogrid against rupture and pullout were investigated by using the design parameters of a geogrid-reinforced retaining walls on a highway that was completed and put into service. AsAa result of the analysis, it was observed that when the angle of internal friction of the filling material increased, the factor of safety against rupture and pullout of the geogrid increased. In addition, it was found that the factor of safety against pullout of the geogrid were higher than the factor of safety against rupture. In this respect, it was concluded that the factor of safety against rupture of the geogrid is more critical in the design calculations and the main factor controlling the design is the factor of safety against rupture of the geogrid. It has been observed that there is an almost linear relationship between the rate of change in the angle of internal friction of the filling material and the rate of change in the factor of safety against rupture of the geogrid, and there is approximately a 2 times difference between them. For example, when the internal friction angle of the filling material increases by 10%, Athe safety coefficient of the geogrid against rupture increases by approximately 20%. AHowever, it was observed that the factor of safety against pullout of the geogrid was more affected by the changes in the angle of internal friction of the filling materials compared to the factor of safety against rupture of the geogrid. For example, a 15% increase in the angle of internal friction results in an increase of approximately 30% in the factor of safety against rupture, whereas it resulted in an increase in the factor of safety against pullout, varying between 300% and 60%, Adepending on the calculated wall depth. It was observed that as the unit weight of the filling material increases, the factor of safety of the geogrid against rupture decreases (about 3%) Aand the factor of safety against pullout increases (about 10%).