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Pregled bibliografske jedinice broj: 471233

Zbornik radova

Autori: Grandić, Davor; Štimac Grandić, Ivana; Latić, Vildana
Naslov: Experimental Determination of Torsional Stiffness in Ribbed Bridge Deck
Izvornik: Road and Rail Infrastructure / Lakušić, Stjepan (ur.). - Zagreb : Department of Transportation, Faculty of Civil Engineering, University of Zagreb , 2010. 489-494 (ISBN: 978-953-6272-37-2).
Skup: First International Conference on Road and Rail Infrastructure - CETRA 2010
Mjesto i datum: Opatija, Hrvatska, 17-18.05. 2010.
Ključne riječi: ribbed bridge decks; torsional stiffness reduction
Sažetak:
A ribbed bridge decks will structurally behave as a grillage. A grillage has an efficient transverse load distribution, as well as transverse displacement distribution, due to transverse asymmetric load. In the case of bridge deck without diaphragms in the span, transverse load distribution depends on the torsional stiffness of longitudinal girders, diaphragms and deck slab. In standard bridge on-site testing, it is common to measure vertical displacements in the middle of the span and over the supports due to transverse symmetric and asymmetric static loading. A deflection in the middle of the span can be defined from the measured displacements in the middle of the span and over the supports. The results of the on-site testing on nine bridges were collected and used in this paper. The numerical results were calculated on three computational models which differ in torsional stiffness only for each single bridge. In this paper, experimental determination of torsional stiffness of bridge deck elements is carried out by using on site measured bridge deck deflection due to transversal asymmetric loading and adequate computational grillage models. Based on the conducted analyses, the coefficient of torsional stiffness reduction for verification of the serviceability limit state according to Annex C of EN 1990: 2000 is determined. The same coefficient is calculated using recommendation for torsional stiffness reduction in concrete elements defined by Model code CEB-FIP 1990 (MC 90). According to conducted analyses the design value of the coefficient of torsional stiffness reduction for verification of the serviceability limit state is proposed.
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Cjeloviti rad (više od 1500 riječi)
Vrsta recenzije: Međunarodna recenzija
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Građevinarstvo
Puni text rada: 471233.D5-Experimental_determinationpdf (tekst priložen 20. Stu. 2013. u 13:48 sati)
Upisao u CROSBI: dgrandic@gradri.hr (dgrandic@gradri.hr), 19. Svi. 2010. u 12:06 sati



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