Qingxi Ancient Town·Qingjiang River Bridge
Qingxi Ancient Town-Qingjiang River Bridge
Qingjiang River Bridge is located in Qingxi Town, Qingchuan County, Guangyuan City, across the Qingzhu River, a total length of 114 meters, the full width of 21.6 meters, span combination of 1x25 prestressed concrete T beam +1x80 sinking concrete-filled steel tube arch bridge, Qingchuan County is the first concrete arch bridge, but also the longest single span bridge.
The continuous beam arch bridge suspension rods in this project have a total of 15 sets of double suspenders. The two pairs of arch rib hangers in the whole bridge have a total of 15×2=30. The hangers are spaced 5m along the bridge direction. The hanger is made of PESC type 7-139 low-stress anti-corrosion cables (parallel steel wire bundles) coated with composite stainless steel pipes, and is matched with LZM7-139 cold-cast pier head anchors.
The inner layer of the finished cable is epoxy coated steel wire, the outer layer of the steel wire is wrapped with fiber reinforced polyester tape, and then extruded double high-density polyethylene (HDPE), and should meet the relevant requirements of GB/18365-2018 "H Hot-extruded PE protection paralleled high strength wire cable for cable-stayed bridge".