Reliability of steel structures in compliance with the principles of the EN 1990 - Theoretical and Experimental Studies, Part 2

Reliability of steel structures in compliance with the principles of the EN 1990 - Theoretical and Experimental Studies, Part 2

Článek recenzovaný mimo WoS a Scopus

The steel structures design standard EC3 allows, for frame structures with compression members, to determine the load carrying capacity both by the stability solution with buckling length and by the geometrically nonlinear solution with initial imperfection. On the example of two types of steel plane frames, it will be demonstrated how the solutions presented result in different load carrying capacity values. The frame loading will consist of both permanent active component and variable active component. Further on, the unbalance of failure probability in dependence on the relation of both loading components will be analysed. A geometrically and physically nonlinear solution was applied to the probability analysis. The numerical simulation method Importance Sampling was used which made it possible to determine, with advantage, the failure probability even on a relatively low number of simulation runs. The input random quantities were considered both according to histograms determined experimentally, and by application of classical probability distribution types having parameters recommended in the corresponding specialized literature.

The steel structures design standard EC3 allows, for frame structures with compression members, to determine the load carrying capacity both by the stability solution with buckling length and by the geometrically nonlinear solution with initial imperfection. On the example of two types of steel plane frames, it will be demonstrated how the solutions presented result in different load carrying capacity values. The frame loading will consist of both permanent active component and variable active component. Further on, the unbalance of failure probability in dependence on the relation of both loading components will be analysed. A geometrically and physically nonlinear solution was applied to the probability analysis. The numerical simulation method Importance Sampling was used which made it possible to determine, with advantage, the failure probability even on a relatively low number of simulation runs. The input random quantities were considered both according to histograms determined experimentally, and by application of classical probability distribution types having parameters recommended in the corresponding specialized literature.

Reliability, simulation method, imperfections, yield strength, partial factor, buckling

Reliability, simulation method, imperfections, yield strength, partial factor, buckling

KALA, Z.

2011

01.01.2004

1210-2717

Inženýrská mechanika - Engineering Mechanics

2

11

Česká republika

115

9