Compilation of calculated combinations in according with EN 1990
DOI:
https://doi.org/10.32347/2410-2547.2022.109.93-108Keywords:
loads and effects, reliability coefficients, calculated combination, limit statesAbstract
The article addresses one of the main issues that arise in the planned development of a new version of domestic standards, which is aimed at closer convergence with the European normative document EN 1990 in terms of calculation methods. If these methods are not fully accepted, then at least the principled positions are agreed, if possible preserving the domestic tradition
An overview of the approaches of European standards EN 1990 to the compilation of design combinations of effects on building structures is given. The information on the method of choosing the calculated combination of influences of different groups of limit states taking into account different types of representative values of variable influences is generalized. Discrepancies with the methods of normative documents in force on the territory of Ukraine (DBN) on the calculation of building structures are indicated. Attention is drawn to the variability of Eurocode rules for the construction of settlement connections in relation to the situations under consideration, such variability is absent in the DBN.
A compromise approach is proposed, which combines the principles of EN 1990 with the accumulated domestic experience and allows to significantly reduce the growth of design loads. The examples show that the increase in design effort causes significantly less increase in the cost of building materials.
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