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Behaviour of parallel girders stabilised with U‐frames

    Kuldeep Virdi Affiliation
    ; Walid Azzi Affiliation

Abstract

Lateral torsional buckling is a key factor in the design of steel girders. Stability can be enhanced by cross‐bracing, reducing the effective length and thus increasing the ultimate capacity. U‐frames are an option often used to brace the girders, when designing through type of bridges and where overhead bracing is not practical. This paper investigates the effect of the U‐frame spacing on the stability of the parallel girders. Eigenvalue buckling analysis was undertaken with four different spacings of the U‐frames. Results were extracted from finite element analysis, interpreted and conclusions drawn.


Santrauka


Projektuojant plienines sijas šoninis sukamasis klupumas yra svarbiausias veiksnys. Pastovumas gali būti padidintas skersiniais ryšiais, mažinančiais veikiamaji ilgi ir padidinančiais ribine galia. U‐formiai remai yra dažna priemone sijoms išramstyti, kai projektuojami tiltai, kuriu laikančiosios konstrukcijos yra virš pakloto, o viršutiniai ryšiai yra nepraktiški. Šiame straipsnyje nagrinejamas U‐formiu remu tarpatramio poveikis lygiagrečiuju siju pastovumui. Tikravertis klupumo skaičiavimas buvo atliktas esant keturiems skirtingiems U‐formiu remu tarpatramiams. Aptarti rezultatai, gauti apskaičiavus baigtinius elementus, padarytos išvados.


First Published Online: 24 Jun 2011


Reikšminiai žodžiai: tiltai, šoninis sukamasis klupumas, pastovumas, U‐formiai remai

Keyword : bridges, lateral torsional buckling, stability, U-frames

How to Cite
Virdi, K., & Azzi, W. (2010). Behaviour of parallel girders stabilised with U‐frames. Journal of Civil Engineering and Management, 16(2), 197-202. https://doi.org/10.3846/jcem.2010.21
Published in Issue
Jun 30, 2010
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