Differential Settlement of Foundations on Loess

Experience gained during several decades shows that the loess soil in some cases undergoes structural collapse and subsidence due to inundation and that in some other cases the sensitivity of loess to the collapse is considerably less pronounced. In this paper the behaviour of three 12 story buildings A, B and C, of the same static system and the identical shapes have been analyzed. The measurement of settlements of building A over a period of 10 years indicate that the values were situated between the limits 9 cm to 13 cm, and that they are larger than the calculated values, but there was no damage reported in this case. However, the measured settlements of building B over the same period of time were considerably larger, reaching 46 to 51 cm, causing severe damages of the building. In order to find the explanation for such behaviour of loess subsoil, the additional field and laboratory testing of loess have been carried out. Some of the obtained results are presented in this paper

Terrain drainage in the landslide area on the Danube slope in Novi Sad

Klizište u zoni mosta Slobode u Novom Sadu je jedno od najviše istraživanih klizišta u Srbiji iz razloga što predstavlja ozbiljnu prijetnju po stabilnost pomenutog mosta preko Dunava. U vrijeme završetka izgradnje 1981. godine, ovaj most s kosim kablovima, bio je na svijetu s najvećim središnjim rasponom od 351 m. U tijelu klizišta, most je temeljen na armiranobetonskim pilotima duljine 27 m. Utvrđena dubina pomicanja za prvi klizni blok iznosi 26 m, a za drugi 35 m. Projektirani drenažni sustav se sastoji od slijedećeg: dva bunara s promjerom od 6,5 m i dubine 22 m, osam drenova duljine do 45 m i drenažnog tunela koji spaja potisnu komoru i bunare.The landslide in the zone of the Sloboda Bridge in Novi Sad is one of the most extensively researched landslides in Serbia because it is large and it poses a threat to the stability of the aforementioned bridge over the Danube. At the time of its completion in 1981, this cantilever-spar cable-stayed bridge was the largest in the world, with a central span of 351 m. In the body of the landslide, the bridge is founded on reinforced concrete piles 27 m in length. The measured depth of movement for the first part of the sliding mass is 26 m, while that of the second one is 35 m. The designed drainage structures consist of the following: two wells with diameters of 6,5 m and depths of 22 m, eight drains with lengths of 45 m and a drainage tunnel linking the pressure chamber and the wells

Geological and Geotechnical Aspects of the most Significant Deep Landslides in the Danube Area on the Territory of Vojvodina

The largest and the deepest landslides in Serbia occurred on the right valley side of the Danube. General conclusions about landslides along the Danube were obtained on the basis of their comprehensive detailed investigations: the Sloboda bridge in Novi Sad, the Beška bridge, the large settlement of Bocke, and the high-speed railway viaduct in Čortanovci. These areas are ac-tually large unstable slopes with deep and shallow landslides. Deep landslides consist of several sliding blocks with 20-40m in depth. All these landslides were formed in clays and sands of the Pliocene age, in the decayed crust of these sediments. The general conclusions about landslides presented in this paper will be of great use for the needs of construction of new facilities in the entire unstable area along the Danube about 100 km in length.Publishe