Construction of the steel-structure tunnel shed at the exit section of the Nanbeiya Tunnel of the Lanzhou-Lianyungang Railway has been completed.
It is China's first ultra-large-scale flexible steel-structure tunnel shed project and has the largest span of its kind in the world.
A bird's-eye view of the construction site of the steel-structure tunnel shed at the exit section of the Nanbeiya Tunnel of the Lanzhou-Lianyungang Railway [Photo/sasac.gov.cn]
Located at the border of Tianshui in Gansu Province and Baoji in Shaanxi Province, the tunnel shed consists of a 24-meter long and wide steel shed frame weighing 65 metric tons and two 37-meter girders, each weighing 113 tons.
A view of the flexible steel-structure tunnel shed after installation [Photo/sasac.gov.cn]
Once operational, the project is expected to help eliminate potential safety hazard at the exit of the Nanbeiya Tunnel, which will ensure smooth and safe railway operation while boosting economic and social development in affected areas and promoting rural vitalization.
No. 4 Engineering Corporation Limited of CR20G, a subsidiary of China Railway Construction Corporation Limited, was responsible for the project.
The tunnel shed frame is hoisted. [Photo/sasac.gov.cn]
(Executive editor: Wang Ruoting)
