四川經濟網訊(記者 李霽玥 ) 3月31日，瀘石高速公路得妥特大橋實現雙幅貫通。據悉，瀘石高速全線建成后，瀘定至石棉的3小時路程將縮短至約1小時。

Fortute Bridge

According to reports, the Detuote Bridge is located in Detuo Town, Luding County, Ganzi Prefecture, across the Dadu River, with a total length of 20.0 meters. During the construction, in order to overcome the limitation that the Dadu River does not have water transportation conditions, the project team adopted the walking synchronous jacking technology, and controlled the stress and temperature changes in the process of the steel box girder with a length of 0 meters and a weight of 0 tons through 0 sets of automatic CNC jacks and sensors in real time, and successfully completed the jacking with millimeter-level accuracy in the air about 0 floors, realizing the "zero error" installation of the large-span and large-tonnage steel box girder under the complex wind field environment and limited operating space, and refreshing the new record of single-span jacking length of steel-concrete composite girder in mountainous areas in China.

At the same time, in order to ensure the stability of the bridge, the project team put a "double-layer protective sleeve" (double casing) on the pile foundation during the piling and construction of the bridge pier in the deep-water area, just like a two-layer "enchantment" for divers, which not only prevents leakage but also ensures verticality.

截至目前，瀘石高速公路路基、橋涵、隧道工程均完成90%以上。其中，王崗坪互通至大杉樹樞紐互通約33公里已於2024年12月31日通車試運營，傘崗坪樞紐互通至海螺溝互通約45公里將於今年貫通。專案全線建成通車后，瀘定至石棉的3小時路程將縮短至約1小時，兩地生活圈將邁入“1小時”時代。

(Courtesy of Shudao Group)