PSI - Issue 72

Boris Folić et al. / Procedia Structural Integrity 72 (2025) 278 – 285

279

1. Introduction

In memoryof: Branko Žeželj Boško Petrović Dimitruje Ćertić Ilija Stojadinivić • Stanko Šram

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This magnificent RC and PC bridge in Novi Sad was built according to the idea of engineer Branko Žeželj, academic, professor, inventor (innovator). Desi gners responsible for bridge construction were Ilija Stojadinović (Mostogradnja) and Dimitrije Ćertić (then IMS). The designer of the procedure for propping the bridge was Boško Petrović. The contractor was the Belgrade company Mostogradnja, which was foun ded in Titel, and at one time had a business unit in NS.

Nomenclature b

width of cross section height of cross section

h

e 1 e p

center of gravity of the lower part of the large arch, from the lower edge eccentricity of the resultant force coming from the press, for lifting the arches

e t eccentricity of the resultant friction force, from the center of gravity to the lower edge of the formwork

2. About the shape of the arch In order to follow the theme of this paper more easily, it is necessary to say something about the shape of the arch and its cross-section. Arches of smaller spans are usually of hollow cross-section, while with larger spans, a light hollow arch dominates. It is the same in this case, the arch consists of two rectangles in the upper and lower parts, which are vertically joined by a wall and a voute, so the middle part is hollow. It is interesting to note that the horizontal force on the left side of the Danube, i.e. on the caisson of the larger arch, from its own weight is 8700t, or 87 MN, and on the smaller arch it is 5600t, or 56 MN.

Fig. 1. (a) Long arch solid model. (b) Small arch solid model.