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Simplified Time-Dependent Column Shortening Analysis in Special Reinforced Concrete Moment Frames

Autor(en):


Medium: Fachartikel
Sprache(n): Englisch
Veröffentlicht in: Periodica Polytechnica Civil Engineering, , n. 1, v. 62
Seite(n): 232-249
DOI: 10.3311/ppci.10679
Abstrakt:

Necessity for adaption of high-rise reinforced concrete structures’ design and practical steps of implementation through nonlinear staged analysis by consideration of long-term behavior of concrete have always been strongly recommended by researchers in recent years. Cumulative column shortening in conventional analyses is the most important consequence of neglecting the above issues. In this article, numerous modeling and extensive nonlinear staged analyses are carried out on structures with different geometrical characteristics and extremely simple empirical equations to estimate column shortening caused by creep, shrinkage and time changes of modulus of elasticity are provided in such a way that these relations can be independent of conventional parameters of ACI209R-92 regulations used in prediction of mentioned axial strains. Results obtained from validation of the proposed equations show high compliance of all proposed equations for up to 30 floors and also show accuracy of proposed shrinkage equation for the moment frame structures higher than the studied range.

Structurae kann Ihnen derzeit diese Veröffentlichung nicht im Volltext zur Verfügung stellen. Der Volltext ist beim Verlag erhältlich über die DOI: 10.3311/ppci.10679.
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  • Reference-ID
    10536622
  • Veröffentlicht am:
    01.01.2021
  • Geändert am:
    19.02.2021