Özet:

The concrete resistance of ancient concrete buildings that can be considered a dangerous structure in Turkey is very low. In the study, the damage limits provided for in TBDY 2018 (Turkey Building Earthquake Regulation 2018) for concrete columns found in such buildings have been experimentally investigated. For this purpose, four concrete console columns are prepared using low-resistant concrete. Columns have been tested to change up to 5% place under high fixed axis loads and increasing repetitive reverse horizontal loads. From the results of the experiment, the columns have been obtained the horizontal load-place change and moment-grid diagrams. The TBDY 2018 indicated; damage limits have been identified depending on the plastic rotation capacity, the change in the form of concrete and steel. Colon damage that corresponds to the limits of this damage has been observed and evaluated. When the limit of limited damage (SH) is reached, the damage is usually formed in the form of head-to-called fractures and a limited amount of over-elastique behavior is observed. Controled Damage (KH) has begun to compress colon crop concrete, but, except for a colon, there has not been loss of resistance. At the border of Pre-Migration Damage, permanent damages occurred and up to 10% resistance loss was observed in the two columns of curved concrete. After the damage limit, there have been significant damage and significant reductions in transportation capacity. Damage was concentrated in a area of Lp=0.5h length, defined as plastic mafsal in TBDY 2018. According to these comparisons, the evaluation method in TBDY 2018 can be said to give reliable results in determining the damage limits of colon elements with low concrete resistance at the high axle load effect.

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