VEKLİ, Mustafa Bozok Üniversitesi - Mühendislik Mimarlık Fakültesi - İnsaat Mühendisligi Bölümü, Turkey , AYTEKİN, Mustafa Bahreyn Üniversitesi - İnsaat Mühendisligi Bölümü, Bahrain , İKİZLER, Sabriye Banu Karadeniz Teknik Üniversitesi - İnsaat Mühendisligi Bölümü, Turkey , ÇALIK, Ümit Karayolları 10. Bölge Müdürlügü, Turkey

Stability analysis of slopes treated by stone columns

28142

In this study, stability of slopes that treated by stone columns has been investigated by experimentally using small scale laboratory model as well as numerically using the finite element method. In the laboratory experiments, soft clay is placed in a small testing box that has a rectangular cross section. The soft clay has been given a sloped shape in the box. Ultimate bearing capacity of a footing that has been rested on upper side of the slope, and safety factor of the sloped soft clay against shear failure has been observed. Mohr-Coulomb material model has been employed for plane strain condition in the numerical modeling of the soft clay. The results of experimental study and numerical model are compatible. Since the results are compatible, onelayer and two-layer clay stratums are considered to investigate the effect of stone columns on the stability of slopes in hypothetical cases. In the hypothetical cases, analyses have been performed for different angles of slopes, various ratios of c/(gH) and s/D (distance between center of stone columns/diameter of stone columns). As a result of the study, it is concluded that the factor of safety is increased 1.25~1.51 times by stone columns.

88

Stone Column , soil improvement , slope stability , bearing capacity , finite element methods

Erciyes University Journal Of The Institute Of Science an‎d Technology

96