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The detailed method (Eurocode 3, 2003)

Deputy

an interesting article by a colleague, M. Gonzalez, senior engineer of the company on a final draft of Career monitor:

The structural calculation, the emergence of a new law has on those who work in this field , news to which we must adapt, studying them in depth to meet both those regulations to be able to meet and get the best performance.

all know from the Technical Code its entry into force in the field of building and construction, but we will stop at a new calculation methodology that was published in the Eurocode-3 (EN 1993-1-1: 2003) for non-conventional metal frames, as are the profiles of variable inertia.

Following the line of collaboration that the company has with Polytechnic University of Catalunya , the engineering team Vircop Building Systems helped draft limit one of his students.

The initial idea for the project was to build on a structure implemented by our company to build a sports center and from there was a comparison between a conventional analysis and an analysis according to the new general method for proposing Eurocode.

Being a relatively simple, let follow step by step, clearly and to manual, all steps required by the new method, and can thus better understand, let's call it, inner workings .

This again is, in simplified form in three steps.

The first is an analysis at the item, evaluating the effects of design loads on the strength of the elements of the structure, considering only their behavior at the level of porch.

Later, an analysis of buckling out of plane structural elements to determine the load that leads to failure of the structure out of plane buckling of the frame.

Finally, it concludes with the verification of the structure considering the interaction between behavior inside and outside the plane of the structure.

This analysis requires us to introduce new restrictions, as the effects of imperfections, both residual internal stresses caused by geometric as well as new parameters in the calculation, allowing improve and adjust the results to the actual behavior of the structure.

The end result project showed us that the conventional analysis, the building did not comply for reasons of instability, while after making a calculation using the advanced approach, they themselves were completely valid.

These results lead us to the conclusion that, although a priori introduce further restrictions in the new method of analysis, a calculation tighter and allows us to further optimize best structures with the economic benefits that entails.