Survey Scheme of Construction Control Network for Concrete Filled Steel Tubular Continuous Truss Curved Bridge
XX Super Major Bridge is a steel tube concrete continuous truss girder curved bridge in XX Province, which is designed in two parts: left and right. The main bridge is designed with two main spans of 44.5m and 62.5m. The total length of the bridge is 1811m, 36 spans in total, and is designed in triplicate. Among them, 1~11 spans are the first, 12~30 spans are the second, and 30~36 spans are the third. The specific span arrangement is: the first unit is 40.7m+9 × 44.5m+40.7m, the second unit is 45.1m+3 × 44.5m+11 × 62.5m+3 × 44.5m+45.1m, and the third unit is 45.1m+4 × 44.5m+45.1m. XX bridge is located on circular curve, transition curve and oval curve with radius of R=356m. The main girder truss is designed as a straight line between truss joints, and the nodes are curve change points, that is, the treatment method of replacing "curve" with "straight". In order to ensure that the radial length of the cantilever of the upper chord node is the same, the structural treatment measures that the radial length of the cantilever between nodes changes with the curve are taken for the upper edge deck. Piers, capping beams and pier columns located in the curve are designed to be arranged along the radial direction, and the internal and external spans of the main beam are unequal.
