Reinforced concrete column and truss combination

B

bektasmehmetali

New Member
Hello, I'm new to the idecad program. I have a small-scale homework that I need to raise. The question I want to ask is as follows. When I examine the program, there are many connection types for the steel-steel connection, but in the project I need to do, I need to install steel truss on the reinforced concrete column. or is there a more suitable link ) and my other question is that although I chose the purlins and truss profiles large, I still get an error in my report. (pmm ratio, beam deflection exceeded and I get axial load errors). Or do you have any document source suggestions? (in my design there is a steel roof on a reinforced concrete frame, the ends of the trusses and the end columns are combined in the steel trusses at the beginning.
 
Hello there; First of all, in order to solve the structure, you should use horizontal crosses to provide stability on the roof, there is a problem of slenderness in the sub-headings of the trusses, this problem should be solved with stability beams. When we come to the purlins, there is a unit error from the snow load entered on the pavement, as I understand it, please recalculate from TS 498 Table 4 and pay attention to the units during data entry in the program. If you click on the box to enter the load and right-click, you can log in by converting it to the unit you want. It may be more beneficial to choose a square for lovers. Or you need to increase the cross section for rectangles. When we come to the joints, you can use the support combination. You can reach the above-mentioned issues in the old earthquake code sample questions book. Apart from this, although there is an explanation with the old regulation, the Steel Structures book by Hilmi Deren is a very suitable way to understand the general logic. At the same time, you can reach the steel samples solved with the new regulation on the Ministry of Environment and Urbanization page, its name is the steel structures regulation application guide. Apart from this, you can reach different trainings related to the program under the steel training title on our forum page.
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Good work.
 
Thank you for your suggestions, I implemented the suggestions you gave, Projeje. The sections you gave were too big for me and I wanted to organize them myself. 1-) In the project I added, I could not establish the connection of the stabilized beam with the end trusses, what is the reason for this? 2 -) scissors ; I couldn't connect it with the reinforced concrete column, with which connection I will do it (plate joint) 3-) I still get the warning that the deflection limit is exceeded even though I increase the cross-sections (I wonder if it is due to lack of connection or some other reason, or the cross-section is really insufficient. Because the cross-sections you arranged are too large. came to me) thank you.
 
Hello there; 1- Cross-end joint was entered in the model within those beams, but you deleted it, as far as I understand, I defined it again, they are also suitable geometrically, please leave it that way. 2- I suggested a support joint in this region, but I said either take the truss level up or take the reinforced concrete beams down. There must be a distance to the steel joint. This is how I edited the analysis model, the reinforced concrete beams can be higher in the drawing model, you can save it as a different model and set it to get a drawing. 3- You have entered the purlins one by one in each interval, in this way, it provides economy to solve like a gerber beam in a 2-span structure. Do not define between the first and last scissors and divide the lovers. This is how the project was organized. If you want the cross-sections to be reduced, you should benefit from building statics in this way. 4- The projects we send to you are not fully optimized, it is up to you, the project design engineers, to adjust the sections and adjust the PMM ratios to be safe but economical. The submitted projects are in accordance with the main logic of programming and engineering, other processes do not belong to us. Good work.
 
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