Dual-cable separated type string truss and construction method thereof

The invention belongs to the technical field of structural engineering, and particularly relates to a dual-cable separated type string truss and a construction method thereof. The dual-cable separated type string truss is installed on the tops of a plurality of supporting structure columns and comprises two upper chord members and two lower inhaul cables. The two upper chord members and the two lower inhaul cables are installed on the supporting structure columns. The two adjacent upper chord members are connected through a plurality of upper transverse supporting rods, and the two adjacent lower inhaul cables are connected through a plurality of lower transverse supporting rods. The construction method comprises the steps that machining and manufacturing of the rods of the truss and purchase of the inhaul cables and steel pull rods are conducted in a factory according to the building and structure design; then, splicing of the string truss is completed on a construction site, the inhaul cables and the steel