Buckling of Double-T Construction Elements for Bridges in Case of Complicated Loading

Antanas Žiliukas


This paper analyzes the stability of double-T elements with complicated loading under bending moment and extra torsional moment. In case of simple bending, long elements and elements of small cross-section are under bending and torsion moments. Here, an extra torsional moment is also evaluated that can occur in constructions under external effects: unsymmetrical loads, wind and temperature. Classical solutions are analyzed in various papers and studies, and engineering solutions given in standards present no examples of such a complicated loading. Therefore, this paper suggests energy method to calculate critical bending forces and extra torsional moment values. Obtained analytical equations are tested by experiment and present to be acceptable.


buckling; double-T element; complicated loading; bending; torsion

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DOI: 10.3846/1822-427X.2009.4.27-30


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