VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Deaggregation of seismic safety in the design of reinforced concrete buildings using Eurocode 8 [Elektronski vir]
    Žižmond, Jure ; Dolšek, Matjaž
    Design of earthquake-resistant structures according to Eurocod 8 is not based on the concept of acceptable/tolerable probability of exceedance of the near collapse limit state. Rather than that ... standard introduces fundamental non-collapse and damage limitation re-quirements, which are associated with the design seismic action. It is foreseen that the non-collapse requirement issatisfied when the regular structure does not collapse in the case of an earthquake with a return period of 475 years. Probability of such an even in 50 years is 10%. Therefore it is obvious that probability of failure of structures, which would be designed strictly according to the fundamental non-collapse requirement, would be unacceptable for society. Due to factors ofsafety involved in design the structures withstand much stronger earthquakesin comparison to an earthquake with a period of 475 years. In orderto assess which factor of safety have the greatest impact on the overall safety of code-conforming buildings, two multi-storey reinforced concrete buildings were investigated. The strength and the system ductility of the six variants of the structures were evaluated on the basis of the pushover analysis gradually taking into account the requirements of the Eurocode 2 and 8, as well as gradually excluding the design assumptions. Safety in design of the buildings was evaluated by the difference between the calculated and prescribed behaviour factor, by the ratio between the design ground acceleration and that associated with the near collapse limit state, which wasassessed using the N2 method, and by the escalation of safety in terms of probability of exceedance of the near collapse limit state. The results of this analysis are dis-cussed in the paper. For the investigated buildings it is shown that the design seismic action has the greatest impact on the yield strength of the structure and the peak ground accelera-tion, which cause the near-collapse limit state. On the other hand, the partial factors of mate-rialstrength contribute around 50% to the return period of the near-collapse limit state, whereas the contribution of the capacity design principles to overall safety is minor.
    Vir: Computational Methods in Structural Dynamics and Earthquake Engineering [Elektronski vir] : COMPDYN 2013 : 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering [and] SEECCM III, 3rd South-East European Conference on Computational Mechanics, Kos Island, Greece, 12-14 June 2013 (Str. 1-14)
    Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasle
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 6303073

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