KB 001824 | Distortional Buckling Design of Bottom Flange of Steel Frame Beam According to GB
GB Distortional Buckling of Member Section 02
Number of Nodes | 30 |
Number of Lines | 43 |
Number of Members | 41 |
Number of Surfaces | 1 |
Number of Solids | 0 |
Number of Load Cases | 7 |
Number of Load Combinations | 10 |
Number of Result Combinations | 0 |
Total Weight | 45.669 tons |
Dimensions (Metric) | 12.000 x 3.000 x 12.000 m |
Dimensions (Imperial) | 39.37 x 9.84 x 39.37 feet |
You can download this structural model to use it for training purposes or for your projects. However, we do not assume any guarantee or liability for the accuracy or completeness of the model.
![KB 001824 | Distortional Buckling Design of Bottom Flange of Steel Frame Beam According to GB](/en/webimage/039757/3498651/Image_05_1200x900_EN.jpg?mw=512&hash=f4dfecd996373a0b9349f601c5a7d6220336caf8)
When a concrete slab is set upon the top flange, its effect is like a lateral support (composite construction), preventing problems of torsional buckling stability. If there is a negative distribution of the bending moment, the bottom flange is subjected to compression and the top flange is under tension. If the lateral support given by the stiffness of the web is insufficient, the angle between the bottom flange and the web intersection line is variable in this case so that there is a possibility of distortional buckling for the bottom flange.
![FE Model of Steel Connection](/en/webimage/052000/4028239/1.png?mw=512&hash=9d7f6c198b6d4ae6ee8f2fa8bca75f85579e14c9)
This article draws a parallel between generating an FE mesh for separate objects using the “Independent FE mesh preferred” option, and generating the mesh without using said option.
![Steel Connections Modeled in Steel Joints Add-on](/en/webimage/051920/4022201/EN-DE-1.png?mw=512&hash=93381a43ac2b4cf28461d64455ce2feeb2889924)
In this article, you will learn how to model a simple end plate connection in RFEM 6.
![KB 001884 | AISC Chapter F Lateral Torsional Buckling Versus Eigenvalue Calculation Methods Compared in RFEM 6](/en/webimage/051669/3996729/2024-07-24_15-34-55.png?mw=512&hash=8e8765705188abd3585dcebe00ae04ca6e38b005)
Utilizing the Steel Design Add-on, steel design is possible according to the AISC 360-22 standard. The following article will compare the result output when calculating lateral torsional buckling according to Chapter F vs. an Eigenvalue Analysis.
![Feature 002820 | Limit Plastic Strain for Welds](/en/webimage/050344/3881226/1.png?mw=512&hash=9d7f6c198b6d4ae6ee8f2fa8bca75f85579e14c9)
In the ultimate configuration of the steel joint design, you have the option to modify the limit plastic strain for welds.
![Component "Base Plate"](/en/webimage/050345/3936120/50345.png?mw=512&hash=3bd641cb1a2445804b338855e4debfc40c6563e9)
The "Base Plate" component allows you to design base plate connections with cast-in anchors. In this case, plates, welds, anchorages, and steel-concrete interaction are analyzed.
![Feature 002807 | 3D Display of FSM Results](/en/webimage/049281/3861162/2024-05-01_10-32-55.png?mw=512&hash=2377d291bc20ac3d78d617b50c131614e99ac6f7)
In the "Edit Section" dialog box, you can display the buckling shapes of the Finite Strip Method (FSM) as a 3D graphic.
![Steel Design | Seismic Force-Resisting System Design Overview](/en/webimage/048507/3803346/seismic_steel.png?mw=512&hash=1c18a83f050e74601a7300444a0d77a0246a0e02)
- Design of five types of seismic force-resisting systems (SFRS) includes Special Moment Frame (SMF), Intermediate Moment Frame (IMF), Ordinary Moment Frame (OMF), Ordinary Concentrically Braced Frame (OCBF), and Special Concentrically Braced Frame (SCBF)
- Ductility check of the width-to thickness ratios for webs and flanges
- Calculation of the required strength and stiffness for stability bracing of beams
- Calculation of the maximum spacing for stability bracing of beams
- Calculation of the required strength at hinge locations for stability bracing of beams
- Calculation of the column required strength with the option to neglect all bending moments, shear, and torsion for overstrength limit state
- Design check of column and brace slenderness ratios
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