Hello, In your project, you see more reinforcement on an upper floor (mezzanine floor) due to the contribution of the curtains on the basement floor, which are not on the upper floors, to the system. Because basement curtains share the effects of columns on a lower floor. The curtains below completely reduce the effects of the columns inside. You could observe that the reinforcements could continue to increase in the basement. It is due to this reason that more reinforcement comes out in the columns on the basement perimeter walls. In addition, the height of the mezzanine floor is higher than the other floors, which is a factor in excess reinforcement on the mezzanine floor."staticstructural":3dgv4oaw" said:What I don't understand is why excessive longitudinal reinforcement is found in the columns with a tension floor; The first thing that comes to my mind is different floor heights than other floors. and the mezzanine floor is the critical floor, but the ground floor above is the critical floor, the longitudinal reinforcements of the columns on the ground floor do not have a shot, and there is no change when the floor height is the same as the other floors. Is there a logical explanation for this?
Mr. Hakan; Thank you very much for the information you provided. However, I believe that there is not an excessive increase in the ground floor column longitudinal reinforcements as in my project, although there are already all-around basement curtains in many buildings with basements. Your explanation is very logical, but the price of the mezzanine column longitudinal reinforcement in the project increased by 2 times and from the next floor to the other floor. I don't think it's normal for it to fall back to the same pursantan on all floors"HakanŞahin":wayxqy5y" said:Hello, In your project, you see more reinforcement on an upper floor (mezzanine floor) due to the contribution of the curtains in the basement, which are not on the upper floors, to the system. Because basement curtains share the effect of columns on a lower floor. It completely reduces the effects of the columns inside the curtains at the bottom. If there were no basement perimeter curtains, you could observe that the reinforcements calculated on the mezzanine floor would continue to increase in the basement. This is the reason why the mezzanine floor is critical because of the basement perimeter walls on a lower floor, and more reinforcement in the columns above the basement perimeter walls. In addition, the height of the mezzanine floor is higher than the other floors, which is a factor in excess reinforcement on the mezzanine floor."staticstructural":wayxqy5y" said:What I don't understand is why excessive additional longitudinal reinforcement is required in the columns where the tension floor is located. turns out; The first thing that comes to my mind is that the floor height is different from the other floors and the mezzanine floor is the critical floor, but there is no critical floor on the ground floor above, and there is no shot in the longitudinal reinforcements of the columns on the ground floor, and there is no change when the floor height is the same as the other floors. Is there a logical explanation for this?
Hello again, if there weren't any basement curtains, you would see more reinforcement increase in the basement than in the mezzanine.If we take the S18 column as a base in your project: 1. The curtain determines the whole behavior of the column inside the curtain. 3. In the other direction, the system works in the form of T-section, its effects are taken by the column and again the wall 4. If the basement walls are modeled as a shell and the column is embedded in the wall, the results always come out like this. If you examine the moment and normal force diagrams of the columns within the basement perimeter walls under vertical and earthquake loading:"staticstructural":sclriqtz" said:your explanation is very logical, but the longitudinal reinforcement price of the mezzanine column in the project suddenly increased by 2 times and started from the next floor. I don't think it's normal for it to fall back to the same pursant on all floors
German 
French 
Spanish 
Portuguese 
Italian 
Arabic 
Russian 
Japanese 
Turkish