With the advancement of cable-stayed bridge construction technology, the application of long-span concrete girder cable-stayed bridge is gradually extensive, making the study of construction technology and equipment for concrete main girders increasingly important. The cable hanging basket, a crucial piece of equipment for cable-stayed bridge construction, maximizes the cable’s bearing capacity, improves construction efficiency, and ensures safety and stability during construction. However, due to the varying structural designs and construction environments, the cable hanging basket must be specifically tailored for different cases. The Hanjiang Bridge on the Xi’an-Shijiazhuang High-speed Railway is China’s first steel-truss-reinforced PC box-girder cable-stayed bridge, with a main span of 420 meters. If conventional diamond-shaped hanging baskets are used for suspended casting of small sections, the construction period will not meet the construction requirements of this bridge.
To save construction time, the concrete main beam is constructed using large-segment cable-stayed hanging basket suspended casting. This paper focuses on the Hanjiang Bridge of the West High-Speed Railway, studying the design of the cable hanging basket. The traveling method, thrust structure, tensioning anchor beam, and side formwork lateral movement method were optimized and innovated to improve construction efficiency. Structural design and safety are evaluated through numerical calculations, providing strong support for advancing suspension pouring technology for large sections of long-span concrete beams.