Reinforced Concrete-Steel Combination

S

serdagi

New Member
Hello, in the attached project, a porch style section will be built in front of a small building. However, I could not combine reinforced concrete columns with steel beams. What type of combination should be used. I wish you good work.
 
For Box/Pipe profiles, you should make a front plate joint. Also, the steel column and your steel beam are the same size, this strong column is not suitable for weak beams, make the beams weaker.
 
mr eraycnar thank you for the reply. I will apply the combination you specified. The profile chosen for the beam was as an example, I will make the necessary adjustments after learning the combination.
 
hello again, joins, element sections, loads etc. I have defined everything, but somehow I can not get the steel elements. I would like you to examine my project and warn you about my mistakes. good work everyone
 
Hello there; Thank you for the information given to Mr. Eray. For box/pipe profiles in constructive joints, the butt plate joint is the most suitable. After making the definition, you need to bring the combination to the appropriate geometry by editing the parameters on the combination menu, some minor changes will be required, using it with its default state will not be suitable for the geometry of your project. Good work.
 
Hello, Ms. Nurgül, I may be making a mistake somewhere, but when I use this type of connection, an abnormal number of reinforcements appear in reinforced concrete beams (like 21Q18). Maybe it can be corrected in the drawing, but if the direction of the bolt is outward, it would be better to correct one by one in large-sized projects. Also, as I wrote in the previous message, when I analyze steel together with reinforced concrete, I get an error in the report, no matter how large the steel elements I choose. I'll be pleased if you pay attention.
 
Hello there; You have loaded your project with the default values of old versions. Therefore, although there are no elements on your roof beams, the wall load was 325 kg/m^2, changed to 0. You did not pay attention to the units in the coating loads. There was a snow load of 150000 kg/m^2 and a unit weight of 200 kg/m^2. In Imo's documents, the coating unit weights vary according to the material, but vary between 5 -30 kg/m^2. Snow loads are given as kN/m^2 in the tables in TS 498. Pay attention to the units during data entry. It is normal for the steel sections to be insufficient with the above-mentioned load values. These situations were rationalized as a unit. However, find the most accurate loads from the specified documents and correct the data entry. The analysis settings were completely suitable for reinforced concrete. Activated combining element-specific mod contributions for seismic loads, ductility level high but R=5 visible, changed to R=7 Wide spans were passed with purlins, and double tension rods were used for support. At the same time, the lovers were one piece, divided by all intersections. There is still an inadequacy in your lovers, especially due to deflection. You will need to enlarge the section. Currently, reinforced concrete and steel elements seem to be sufficient except for purlins in the analysis results. Analyze and check the results after intervening the lovers. Good work.
 
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