New progress has been made

Syrian Railway Fengjiazhai Special Bridge Helong

Reporter Zhang Zhenyu Correspondent Wu Xiuhong

On July 20th, with the completion of the last concrete of the last side of the Fengjiazhai special bridge, the launch of the last side of the launch of the launching section was completed, and the Western Land and Sea New Channel West Line West Line Flowing Project — Syria (Yong) Bi (Section) Railway (Sichuan -Yunnan Section) (Sichuan -Yunnan Section section ) The highest pier and the largest across Fengjiazhai Special Bridge went smoothly.

Fengjiazhai Special Bridge is located in Yudong Township, Xiong County, Zhaotong, Yunnan Province, with a total length of 654.68 meters. It spans Fengjiazhai Grand Canyon. The deepest part of the river valley is 180.7 meters. Gao Dun and 168 meters are the highest pier and largest span in the Syrian Railway (Sichuan -Yunnan Section). The continuous rigid beams of this time use a single box, a single room, a variable height, and a cross -section box beam. The total length of the box beam is 353.5 meters, which has the characteristics of the bridge that spans first and then. The beams are poured with light hanging basket cantilever, and the vacuum pump auxiliary sinking machine is used.

Pile foundation irrigation is an important process to ensure the quality of bridge projects. The first can of catheter buried is more than 2 meters. The project department uses a central collective bucket and a big raw bucket to ensure that the first can of 9.8 cubic meters. Pour irrigation, and at the same time control the irrigation speed, so that the buried tube is controlled in the range of 2-6 meters to ensure the quality of pile. When the height of the top design of the pile top is 0.5-0.8 meters, when the concrete strength of the pile roof reaches 70%of the design strength, it will be removed. Under the strong protection measures and quality control of the entire process, the 28 piles of pier No. 7 were tested by third -party tests.

The construction control point of the bridge is controlled by the pier body. The pier is hollow and soft. The highest pier is poured 16,000 cubic meters of concrete, which can fill 8.5 standard swimming pools. "Make sure that the bridge pier stands high, and the" body body 'does not have a form? The pier -shaped control is difficult. "Wang Yuqi, the manager of the Syrian Railway project of the 19th Bureau of China Railway, said:" The pier body adopts the "skirt" shape design的稳定且外形的美观，建设过程中，我们采用液压爬模技术，专业测量人员24小时监测，布设大地四边形控测网，严格控制网的精度，并由精测队进行定期复测，确保高The top elevation of the pier and the perfect slope of the pier body and the vertical degree. Strictly manage the construction process throughout the process, focus on implementing grid security management, and ensure that the construction is conducted smoothly at high standards. "

It is understood that the Syrian Railway is an important part of the Longhuang Railway. It is a smooth through -line channel of the Western Land and Sea New Channel. It is the recent freight channel from the Southwest to the Beibu Gulf. The Syrian Railway starts from Xuyong County, Luzhou City, Sichuan Province, via Xingwen County, Yibin City, Weixin County and Zhenxiong County, Yunnan Province. Effectively improve the traffic conditions and investment environment along the route, promote the comprehensive development of the economic and social development of the south of Sichuan, northeast Yunnan, and northwestern Guizhou. It is a red project that helps rural revitalization. Essence

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