Original scientific paper

Comparative analysis of limit bearing capacity of a continuous beam applying the limit and shakedown analysis depending on the character of the load

Bojan Milošević orcid.org/0000-0002-5467-6407 ; College of Applied Studies in Civil Engineering and Geodetic, Hajduk Stankova 2, 11000 Beograd, Serbia
Marina Mijalković orcid.org/0000-0003-1346-5467 ; Faculty of Civil Engineering and Architecture, Aleksandra Medvedeva 14, 18000 Niš, Serbia
Žarko Petrović ; Faculty of Civil Engineering and Architecture, Aleksandra Medvedeva 14, 18000 Niš, Serbia
Mirza Hadžimujović ; State University of Novi Pazar, Vuka Karadzica bb, 36300 Novi Pazar, Serbia

Abstract

Applying the theorems of structural limit analysis it is possible to determine the limit load of linear systems exposed to load which increases proportionally until the formation of failure mechanism. In the case when beam systems are exposed to repeated load, the limit theorems do not yield the adequate solutions, thus the adaptation theorems which made safe limit load determination possible were developed simultaneously. In this paper, applying the static and kinematic theorem of limit and shakedown analysis, the failure load of continuous beam with two spans has been determined. Also displayed is the difference between the values of failure forces depending on the character of load and the beam span value in order to assess justification for application of the shakedown method in the analysis of the limit bearing capacity of the beams.

Keywords

continuous beam; failure mechanism; incremental failure force; limit failure force; residual bending moment

Hrčak ID:

75394

URI

https://hrcak.srce.hr/75394

Publication date:

27.12.2011.

Article data in other languages: croatian

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