Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleYalnız künye2022GIS-based determination of potential instabilities and source rock areas on the Torul-Kürtün (Gümüşhane) motorway, rockfall, and protection structure analyses
Alemdag, Selcuk; Bostanci, Hasan Tahsin; Gacener, Elif
The Torul-Kürtün-Tirebolu motorway, one of the alternative routes for access between the Eastern Anatolia Region and the Black Sea Region, has an important traffic potential in this respect. However, rockfall events that occur frequently in almost every season especially in the part of the route between Torul and Kürtün may occasionally cause loss of life and property and lead to disruption in transportation in a much more common way. Departing from this point, the parts of the motorway that pose a greater threat in terms of slope instability and rockfall potential were selected as the study area. Instability maps produced by the kinematic analysis results showed that the probability of toppling type failure in the study area was quite higher, while the general results were as follows: the probability of toppling type failure was found in 204 different locations and approximately 97,900 m2 of area. Taking account of geographic information system (GIS)–based final instability maps, profile lines were determined for potential rockfalls in the instability-intense source rock areas. The profile lines which were determined were analyzed two-dimensionally in the RocFall 7.0 computer program. The rockfall analyses revealed that the rolling rock blocks in the section SP7 shall remain on the surface of the slope, while the rock blocks in other sections shall reach the road route. The application of barrier types determined by barrier sensitivity analysis on profile lines will minimize or completely prevent potential hazards.
- MakaleYalnız künye2017Zeminlerin emniyetli taşıma kapasitesinin belirlenmesinde oturma miktarının önemi
Cinoğlu, Aslıhan; Gacener, Elif; Alemdag, Selcuk
Bu çalışmada Gümüşhane İli sınırları içerisinde bulunan Tamzı ve Akçakale Köylerinde yüzeylenen zeminlerde optimum bir temel tasarımı için izin verilebilir oturma koşullarını sağlayan emniyetli taşıma kapasitelerinin belirlenmesi amaçlanmıştır. Zeminlerin jeoteknik özelliklerinin belirlenmesi için, her bir alanda üçer adet araştırma çukuru açtırılmış olup, bu alanlarda ikişer adet sismik kırılma ile yüzey dalgalarının çok kanallı analizi (MASW) yöntemleriuygulanmıştır. Araştırma çukurlarından alınan örselenmiş ve örselenmemiş örneklerde elek analizi, kesme kutusudeneyi, üç eksenli sıkışma deneyleri yapılmıştır. Uygulanan sismik kırılma ve MASW yöntemleri ile zeminlere aitsismik hızlar belirlenmiştir. Emniyetli taşıma kapasitesinin belirlenmesinde Terzaghi, Meyerhof, Kurtuluş, Tezcan veÖzdemir, Türker ve Keçeli tarafından önerilen eşitlikler kullanılarak elde edilen emniyetli taşıma kapasitesi değerlerikarşılaştırılmıştır. Daha sonra her iki zemin sonlu elemanlar yöntemi ile modellenerek izin verilebilir oturma koşullarında emniyetli taşıma kapasiteleri belirlenmiştir. Elde edilen sonuçlara göre, ampirik eşitliklerden elde edilen emniyetlitaşıma kapasitesi değerlerinin optimum bir temel tasarımı için uygun olmadığı, optimum tasarım için killi zeminde (CL)emniyetli taşıma kapasitesinin 190 kN/m2, killi kum (SC) da ise 485 kN/m2 olarak alınması gerektiği belirlenmiştir.
- MakaleAçık Erişim2017The importance of amount of settlement in determining the bearing capacity of soils
Alemdaǧ, Selçuk; Cinoǧlu, Aslihan; Gacener, Elif
In this study, it is aimed to determine safe bearing capacity of soils, which are out cropped around Tamzi and Akcakale villages located in Gumushane, providing allowable settlement conditions for an optimum foundation design. To define the geotechnical properties of soils, three trenches were dug and two seismic refraction with two Multichannel Spectral Analysis of Surface Waves (MASW) were carried out in each research area. Sieve analyses, shear box tests, triaxial compression tests were carried out on disturbed and undisturbed samples taken from the trenches. Seismic velocities of the soils are determined by seismic refraction and MASW methods. While determining the safe bearing capacity; the equations proposed by Terzaghi, Meyerhof, Kurtuluş, Tezcan and Özdemir, Türker, Keçeli were used and the obtained safe bearing capacity values were compared to each other. After, the soils were modeled numerically by using finite elements method and safe bearing capacities providing allowable settlement conditions were determined. According to the results, safe bearing capacity values obtained from empirical equations are not satisfactory to have an optimum foundation design. For the optimum foundation design, safe bearing capacity should be accepted as 190 kN/m2 for clayey soil (CL) and 485 kN/m2 for the clayey sand (SC).