Span moment in beams "Reinforced Concrete - Beam - Forces"

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engineer_yildiz

New Member
Dear idecad officials, Where can I find the opening moment in beams in the table section under the heading "Reinforced Concrete - Beam - Forces"? (I am not talking about the phrase "opening moment" written at the bottom of the table. N in the table titles: The axial force of the element, V2, V3: The shear forces in the 2 and 3 directions of the element. ]T[/b] : Torsional moment of the member M2: Bending moment of the member in 2 (minor) direction M3: Bending moment of the member in 3 (major) direction.) [b Where can I find opening moment like ] like M2, M3?[/b]
 
Re: Opening moment in beams "Reinforced Concrete - Beam - Force As it is called, "end forces" table. You can find only end forces in this table. End forces are indicated by "i" Left end is shown as "j" Right end is Opened You can view the torque in the Analysis system display options - Frame results section, where moment diagrams are drawn with the relevant combinations.
 
Re: Opening moment in beams "Reinforced Concrete - Beam - Force You can see how you can see opening moments in the attached picture. In the frame results : or in the beam reinforcements, reinforcement areas tab:
 
Re: Span moment in beams "Reinforced Concrete - Beam - Force Dear İdecad Official, In case of reverse moment (deflection inversion = short span beam), can we see the moment diagram inverted in relation to deflection?
 
Re: Span moment in beams "Reinforced Concrete - Beam - Force
"engineer_yildiz":qdnl713g" said:
Dear Idecad representative, In case of reverse moment (deflection inverse situation = short span beam), the moment diagram is also related to deflection. Can we see it upside down?
Click to expand...
Yes, you can see the shape of the beam without deformation from the 3D frame.
 
Re: Span moment in beams "Reinforced Concrete - Beam - Force I guess I couldn't explain exactly what I wanted to ask. If reverse moment occurs due to short beam, I tried to see the moment diagram of this as you mentioned. Deformation in short beam is when the deformation of the reinforced concrete beam is upwards in the deflection part. (inverted cup), when I want to see the opening moments (in various load combinations) with the method you suggest, I cannot see the reverse cup formation (reversal of the support and span moments in accordance with the deflection)
 
Re: Opening moment in beams "Reinforced Concrete - Beam - Force Add this project, write the name and floor of the beam and let us examine it together. Let's examine it together. Moment diagram may not appear as "inverted bowl" in every loading type. The beam's support moments must be positive and the displacement curve must be "inverted bowl". Just because the displacement curve (deformed beam) is "inverted bowl" does not mean that the moment diagram will also be "inverted bowl". Distributed loads wall on the beam, its own weight is positive As long as it is in the direction of gravity (from top to bottom), the moment curve will never be "inverted bowl" under vertical loads. In cases where the elastic curve is "inverted bowl" due to side openings, the moment diagram curve from vertical loads will not be "inverted bowl" again. They affect the support moments and can raise the moment diagram completely. But they can never "reverse bowl". If you want to send a small project or any project for which you expect a moment diagram in the form of "reverse line", let's examine that moment diagram, that combination and displacement on that beam, on that floor, on that opening, we'll see together. Below are two three-span frames. Once +3 tf/m spread load is applied to the middle opening, and once -3 tf/m spread, there are deflection, shear force and moment diagrams. If the beams are loaded like this, it will be "inverted bowl".
 
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