Self-balancing arch structure and construction method thereof

The invention provides a self-balancing arch structure and a construction method thereof, the self-balancing arch structure comprises an arch body, a balancing cable and a protection ditch, the two ends of the arch body are tensioning ends, the two ends of the protection ditch are provided with fixing parts, the tensioning ends of the arch body are installed on the fixing parts, the two ends of the balancing cable are fixedly connected with the tensioning ends at the two ends of the arch body, and the balancing cable is arranged in the protection ditch. The advantages that the arch body is good in pressure bearing performance and large in span can be achieved are fully utilized, meanwhile, the advantage that the balance cable is outstanding in tension performance is fully utilized, the advantages of the arch body and the balance cable are fully utilized, and meanwhile the defect that the arch body is large in horizontal thrust is overcome. In addition, the protection ditch is arranged, the balance cable is pr