Cable-stayed bridge sectional cable system with prestressed cable saddle structure and fabrication and installation method thereof
A technology of prestressed cables and installation methods, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of cable breakage and insufficient fatigue strength, and achieve the goal of eliminating stress amplitude, reducing fatigue damage, and solving the problem of cable breakage Effect
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Embodiment 1
[0086] A segmented cable system of a cable-stayed bridge with a prestressed cable saddle structure:
[0087] like Figure 1-1 to Figure 1-3 Shown, the drag cable of the cable-stayed bridge segmented cable system of the band prestressed saddle structure is divided into three sections, including the first section drag cable 31, the second section drag cable 32, and the third section drag cable 33, so The second section of the cable 32 passes through the steel cable saddle 2, and after being pre-tensioned, it is anchored on both sides of the cable tower 1 through the cable saddle cable anchoring device, and the first section of the cable on both sides of the second section of the cable 32 The cable 31 and the third section of the cable 33 are cables with a connecting anchorage device 9 at one end, and the first section of the cable 31 and the third section of the cable 33 are respectively connected to the two sides of the second section of the cable 32 through the connecting devic...
Embodiment 2
[0094] A fabrication and installation method for the sectioned cable system of a cable-stayed bridge with a prestressed cable saddle structure:
[0095]It is the production and installation method of the sectioned cable system of the cable-stayed bridge with prestressed cable saddle structure described in the first embodiment, that is, the cable of a cable-stayed bridge is divided into three sections, and the second section is located in the cable-stayed bridge. On the cable tower of the bridge, the shaped steel cable saddle and the second section of the cable are self-contained and pre-tensioned and then anchored on the cable tower of the cable-stayed bridge to form a prestressed cable saddle structure system. The first section of the cable and the third section of the cable The cables are respectively connected on both sides of the second section of the cable; in the design, the number of prestressed tendons of the second section of the cable is increased to increase the forc...
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