Techno Press
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Smart Structures and Systems   Volume 16, Number 6, December 2015, pages 1069-1089
The effect of arch geometry on the structural behavior of masonry bridges
Ahmet C. Altunisik, Burcu Kanbur and Ali F. Genc

Abstract     [Full Text]
    Arch bridges consist of some important components for structural behavior such as arches, sidewalls, filling materials and foundations. But, arches are the most important part for this type of bridges. For this reason, investigation of arch is come into prominence. In this paper, it is aimed to investigate the arch thickness effect on the structural behavior of masonry arch bridges. For this purpose, Göderni historical arch bridge which was located in Kulp town, Diyarbakir Turkey and the bridge restoration process has still continued is selected as an application. The construction year of the bridge is not fully known, but the date is estimated to be the second half of the 19th century. The bridge has two arches with the 0.52 cm and 0.69 cm arch thickness, respectively. Finite element model of the bridge is constructed with ANSYS software to reflect the current situation using relievo drawings. Then the arch thickness is changed by increasing and decreasing respectively and finite element models are reconstructed. The structural responses of the bridge are obtained for all arch thickness under dead load and live load. Maximum displacements, maximum-minimum principal stresses and maximum-minimum elastic strains are given with detail using contours diagrams and compared with each other to determine the arch thickness effect. At the end of the study, it is seen that the maximum displacements, tensile stresses and strains have a decreasing trend, but compressive stress and strain have an increasing trend by the increasing of arch thickness.
Key Words
    arch bridge; arch thickness; finite element model; structural response
Ahmet C. Altunisik, Burcu Kanbur: Department of Civil Engineering, Karadeniz Technical University, Trabzon, TurkeyAli F. Genc: Department of Civil Engineering, Karadeniz Technical University, Of Technology Faculty, Trabzon, Turkey

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