The first steps towards the restoration and seismic strengthening of the historic cable-stayed suspension bridge of Deir ez-Zor in Syria

Introduction. The historic cable-stayed suspension bridge of the city Deir ez-Zor in Syria, which is an architectural monument, described. history its creation at beginning twentieth century and destruction during hostilities 2013 given. importance this for country as a whole indicated, was reason choice object research. Aim. study intended to contribute restoration (or) subsequent seismic strengthening ez-Zor. Materials methods. A detailed description characteristics above-mentioned bridge, built according system French design engineer Albert Gisclard, project Gaston Leinekugel Le Cocq construction company “Arnodin”, are Suspension bridges compared distinctive features Gisclard listed. Radial cablestayed trusses described scheme load distribution illustrated. Examples calculation stay cables their cross-sectional area briefly given, can be used cable stays. method protecting from wind influences considered. Results. Lines influence radial illustrated, showing tension compression zones Stiffening recommended adding multi-span bridges, they increase rigidity. To protect vibration, damping or reducing vibration using magnetorheological liquid dampers with tuned mass proposed. Conclusions. Conclusions drawn about feasibility together after help dampers, allow while maintaining authenticity original exterior appearance.