China - Jiuxigou Bridge 九溪溝橋

 

Stamp Issue : 1978-11-01 

Situated in Jiuxigou in Fengdu County, Sichuan Province, Jiuxigou Bridge is a highway bridge. Straddling 116 meters on a single span and with a width of 7.5 meters, the bridge was completed in 1972 and was the world's largest single-arch stone bridge at the time. The main arch is variable-section catenary, with the vault 1.6 meters thick, bottom arch 2.25 meters thick amd arch vector degrees 1/8. The masonry construction was done ring by ring in the scaffolding.

九溪溝橋位於四川省豐都縣九溪溝的公路橋，跨徑為116公尺，建成時是世界上跨徑最大的石拱橋，於1972年建成。橋寬7.5公尺，主拱圈為變截面懸鏈線，拱頂厚1.6公尺，拱腳厚2.25公尺，拱矢度1/8。施工方法是在腳手架上分圈砌築。