Can the hand calculation check member buckling safely?

Webinar

Connection Wednesdays – is Excel still more effective?

Steel

Connection

Parametric design

Modeling

Report

Checkbot

Date de webinaire:

2024-11-13T10:00:00.0000000Z

(en votre temps local, format 24 heures)

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An example of a real structural buckling problem
Buckling analysis within a global model in FEA software
Hand calculation of member buckling
Member buckling analysis using GMNIA calculation
Possible errors and how to avoid them

Lecteurs

Alexander Szotkowski Product Engineer
IDEA StatiCa

Ondrej Hudec Product Engineer
IDEA StatiCa

Treating the possible stability loss of steel structural members is a rather less popular job in structural engineering practice. Such buckling is often solved by engineering judgment and estimations. But, to stay safe, we need to calculate it. Is it enough to do it with the analytical approach?

In this webinar, we will discuss the two present methods for calculations and code-checks of member buckling in steel structures. The analytical approach, as per code equations and procedures, will be compared with the numerical approach in IDEA StatiCa Member, which utilizes CBFEM technology.

Real yet anonymous example

We will take a look at a simple beam-column segment made of a 6-meter-long HEA300 column and an 8-meter-long IPE500 beam lying on top of it. The beam is also stabilized by bracing tubes on both sides. This structural segment is located inside a larger building and serves as a load distributor into the rest of the structural system.

Buckling analysis compared

The global model of this segment is created in the FEA software SCIA Engineer. From here, we will extract the internal forces and also see this program's solution to the buckling analysis.

Then, we shall revise the hand calculation following the analytical approach described in EN 1993-1-1 chapter 6.3, Buckling resistance of members. For that, we will choose the structural system and determine buckling shapes and buckling lengths.

After that, we will do the same job using IDEA Statica Member and its GMNIA solver with imperfections (see how to determine them), compare the results, and discuss the findings and possible design alternatives.

Should you prefer, you can also read a blog on the same topic - Don't let standard connection design slow you down.

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