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The construction of the upper catwalk of the Longtan Yangtze River Bridge was completed on Monday, marking the full connection of the bridge"s aerial construction channel.
As the most important aerial work channel and temporary work site for the superstructure construction of the suspension bridge, the catwalk is called the "suspended lifeline" of the Suspension bridge because the lowest point is about 90 meters from the river surface.
The catwalk adopts a three span continuous structure, with one catwalk located below the main cable on both sides. The 4-meter-wide and 2818-meter-long single side catwalk is composed of 10 high-strength galvanized steel wire ropes with a thickness of 54 millimeters.
“We need to operate on this catwalk to complete the installation of the main cable, cable clamp, sling, and steel beam. We are preparing to install the first main cable around July 12th”, Wang Kun, Deputy Production Manager of Longtan Yangtze River Bridge Project of CCCC Second Highway Engineering Co., Ltd., said.
The 5-kilometer-long Longtan Yangtze River Bridge is designed with six lanes in both directions and a per hour speed of 100 kilometers. The single span suspension bridge with a main span of 1560m, steel box girder and Suspension bridge is scheduled for completion before the end of 2024.
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