Segmental prefabricated concrete string arch bridge

The invention provides a segmental precast concrete string arch bridge which comprises an arch bridge body of an arc-shaped structure, the arch bridge body is formed by splicing a plurality of arch bridge sections of the arc-shaped structure, the two sides of the arch bridge body in the length direction are each provided with a bridge pier, and a plurality of horizontal and parallel steel bar inhaul cables are arranged below the arch bridge body in the length direction of the arch bridge body. The steel bar inhaul cable is in a tensioned state, the two ends of the steel bar inhaul cable are fixedly connected to the bridge piers, a plurality of vertically-arranged supporting rods are arranged on the steel bar inhaul cable in the length direction of the steel bar inhaul cable, and the top ends of the supporting rods are located at the joint of the arch bridge sections. Compared with a traditional arch bridge, the arch bridge body composed of the prefabricated arch bridge sections is directly spliced and install