The effect of climate change that have been occurred in worldwide is felt especially in Turkey in recent years. Rainfall is the parameter most affected by climate change. Rainfalls affects the amount of water to be used for drinking, irrigation and electrical energy production by feeding the streams flow. In this study, the total monthly precipitation data of 5 meteorological observation stations in Elazığ province were investigated and the changes of these precipitations under the influence of climate change were analyzed monthly, seasonal and yearly using Innovative Trend Analysis (ITA). When the results obtained by ITA method were evaluated, it was found that rainfall measurements of selected stations were negatively affected by climate change and there was a significant decrease in precipitation when analyzed monthly, seasonal and yearly.
Concrete-filled steel tubular (CFST) columns are widely used in construction of high-rise buildings and peers of bridges to increase the lateral stiffness of the buildings, the axial load capacity, ductility, toughness, and resistance of corrosion of the columns. The CFST columns have much superior characteristics compared with traditionally reinforced concrete columns. The position of the concrete and steel tube in the cross-section of the CFST column is the most appropriate solution in terms of the strength and ductility. The steel tube, which is placed outside of the cross-section of the column, withstand the bending moment effectively. The concrete that is placed into the steel tube delay the local buckling of the steel tube and increase the axial load capacity of the column due to continually lateral confining. This paper presents a review on experimental results of the axial behavior of CFST columns performed by various researchers.
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