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izvor podataka: crosbi

Evaluation of torsional stiffness in beam and slab bridge decks based on load testing (CROSBI ID 189002)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Štimac Grandić, Ivana ; Grandić, Davor ; Bjelanović, Adriana Evaluation of torsional stiffness in beam and slab bridge decks based on load testing // International Journal of Civil Engineering, 13 (2015), 3; 255-266. doi: 10.22068/IJCE.13.3.255

Podaci o odgovornosti

Štimac Grandić, Ivana ; Grandić, Davor ; Bjelanović, Adriana

engleski

Evaluation of torsional stiffness in beam and slab bridge decks based on load testing

In this paper, evaluation of torsional stiffness in beam and slab bridge deck elements is presented. A beam and slab bridge decks structurally behave as a grillage. A grillage has an efficient transverse load distribution due to transverse asymmetric load. In the case of bridge deck without transverse beams in the span, transverse load distribution depends on the torsional stiffness of longitudinal beams, transverse beams over the. supports and deck slab. The results of load testing conducted on series of bridges in Croatia is compared with results obtained on different numerical grillage models in which torsional stiffness of main structural elements was varied. Five different numerical models for each tested bridge is used. To evaluate torsional stiffness of main structural elements of the bridge the transverse distribution coefficients are introduced. The design value of the coefficients of torsional stiffness reduction for verification of the serviceability limit state (SLS), with assumption of normal probability distribution is determined. The same coefficient is calculated using recommendation for torsional stiffness reduction in concrete elements defined by Model code CEB-FIB 1990 (MC 90). According to conducted analyses the design value of the coefficient of torsional stiffness reduction for verification of the serviceability limit state of main structural elements of beam and slab bridge deck is proposed.

beam and slab bridge deck ; torsional stiffness ; SLS

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Podaci o izdanju

13 (3)

2015.

255-266

objavljeno

1735-0522

10.22068/IJCE.13.3.255

Povezanost rada

Građevinarstvo

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