The hottest South-to-North Water Transfer trunk li

As the South-to-North Water Transfer trunk line crosses the Yangtze River of Beijing Shanghai railway, the water is getting closer and closer

the South-to-North Water Transfer trunk line crosses the Yangtze River of Beijing Shanghai railway, the water is getting closer and closer

China engineering machinery information

Guide: with the completion of the last 10 cm of the 3600 ton preset frame, the main construction difficulty of the Tianjin section of the Tianjin Trunk Line of the middle route of the South-to-North Water Transfer - the Beijing Shanghai railway crossing section was completed in advance yesterday, This also created the largest specification of railway crossing support frame structure in North China. At 10:25 a.m. on January 18, outdoors

with the completion of the last 10 cm of the 3600 ton preset frame structure, the main construction difficulty of the Tianjin section of the Tianjin Trunk Line of the middle route of the South-to-North Water Transfer Project - the Beijing Shanghai railway crossing section was completed in advance yesterday, which also created the largest specification of the railway crossing support frame structure in North China

at 10:25 a.m. on January 18, the outdoor temperature is -8 ℃. Liu Zhiqiang, the project manager of Beijing railway construction company of China Railway sixth Bureau, who is responsible for the construction, started the power facilities after confirming with the ground monitoring personnel that no train passed. Under the joint operation of 20 jacks, the preset frame structure with a length of 31.4 meters, a width of 11.1 meters, a height of 10.5 meters, a wall thickness of nearly 1 meter and a self weight of about 3600 tons was slowly pushed into the Beijing Shanghai Railway West of Caozhuang station and east of Yangliuqing power plant, completing the last 10 cm crossing. This short length of 10 cm marks that the Beijing Shanghai railway crossing project with an estimated construction period of 10 days has been shortened to 3 days, creating a new record for railway crossing in North China. Ji Hongde, head of the Tianjin Trunk Line Project of the South-to-North Water Transfer Project of Tianjin water conservancy construction and management center, introduced that the Beijing Shanghai railway crossing project is one of the main construction difficulties of the Tianjin section of the Tianjin trunk line. It vertically crosses the Beijing Shanghai railway in the west of Caozhuang station and in the east of Yangliuqing power plant, with a total length of 12, expanding the scope of bilateral local currency exchange by 4.5 meters. The biggest difficulty of the project is to minimize the interaction between project construction and railway operation. It is necessary to ensure that the railway subgrade has no deviation, so as to ensure the safety of train operation. In order to overcome this difficulty, the project adopts the trenchless construction technology of jacking the preset frame structure for support, and then jacking the preset water transmission box culvert from the frame structure. The preset frame structure with length of 31.4 meters, width of 11.1 meters, height of 10.5 meters, wall thickness of nearly 1 meter and self weight of about 3600 tons used this time has created the largest specification of railway crossing support frame structure in North China, with a total top distance of about 50 meters. In order to ensure the stability of the subgrade, the construction personnel used 86 concrete cast-in-place piles with a diameter of 90 cm to support the earthwork on both sides. The pile driver was used to drive the reinforcement into the ground while pouring concrete. Two rows of mixing piles were driven outside the two rows of cast-in-place piles to strengthen and prevent water

in order to ensure the safety of the Beijing Shanghai railway and trains, and cooperate with the construction of the Tianjin trunk line crossing project, since January 7, Beijing Railway Administration has arranged for the trains passing this section of the railway to reduce the speed from 160 kilometers per hour to 45 kilometers per hour, and organized the safety inspection and maintenance of railway facilities. After the completion of this crossing, the I-beam used to support the subgrade and rail will be removed, and the subgrade will be paved again and replaced with sleepers. The construction of the follow-up 125 meter nine section water conveyance box culvert will be completed in April this year. It is understood that by 20:00 on the 30th of this month, the train will return to normal speed. During the deceleration period, the train passing through this section will be delayed for about 5 minutes, which will not affect the Spring Festival transportation

up to now, the 19.7km project of Tianjin section of Tianjin Trunk Line, which is under the construction and management of the city, has completed a total investment of 9. The clamping force of the sample will change with wear 300 million yuan, accounting for 96.6% of the contract amount. The construction of a "water transmission tank" culvert is 19.2 kilometers, and the remaining important node of the Beijing Shanghai Expressway crossing section is also being implemented. It is planned to be completed in the first half of this year, which also marks that the sweet water of the Yangtze River is getting closer and closer to us