Over Linfen, how does "more than 1,000 elephants" "turn around" perfectly?

Shanxi Daily reporter Fan Minfei Correspondent Xiao Jingjing reported that after 120 minutes of "air rotation" from 21:00 to 23:00 on July 2nd, the two exotic steel boxes of the Railway Bridge and right of Linfen City, built by the Seventh Company of the China Railway Bridge Bureau The successful turn of Liang laid the foundation for the opening of the entire line.

It is reported that during the preparation of the transfer, the project department tried the two steel box beams one day in advance. Before the rotation, comprehensively arrange the structure in the range, collect relevant data by adjusting the posture of the turning structure or dismantling obstacles, analyze the problems that may be encountered in the pre -construction in advance, and formulate targetedness. Measures and plans to ensure the smooth completion of the rotation.

That night, the entire construction process was under the conditions of high safety risk, high technical requirements, and limited construction venues, which was equivalent to more than 1,000 adult elephant emphasis (the weight of the left somatoscope was about 3200 tons, and the weight of the right -range rotor was about 3600 about 3600. Tong) Two alien steel box beams completed the perfect "turn" in the air.

This turns adopt an innovative method of "unavailable wide steel beams synchronous synchronous turntable+back -to -segment construction", adding temporary tower+suspension structure to the main bridge steel beam, improving the structure of the main bridge, not only the structure of the main bridge, not only It has reduced the influence of the beam end and the impact of construction, and greatly reduced the risk of safety, shortening the construction period of nearly two months.

"The difficulty of turning in this turntable is very difficult." Wen Jie, chief engineer of the project, introduced that the main bridge turntable steel box beam is a alien steel box beam, which uses a double imbalance. With the line, the left and right frames are rotated in clockwise, the left -sized turn angle is 97.82 °, and the right -range rotation angle is 96.47 °.

In order to ensure the stable structure during the turning process, the project department made 3 reignation and two adjustments to the left and right beams before turning, and obtained important parameters such as eccentricity and resistance coefficients to effectively control construction risks. , Ensure the safety of the railway operation line and the smooth progress of the bridge turning, ensure the safety quality, controlled progress, and one excellence at a time.

The cross -rail bridge project of Hefen 1 (Phase I) is a key urban construction project determined by the Linfen Municipal Party Committee and Municipal Government. At this point, the major key nodes of the project have been successfully realized, laying a solid foundation for the main line bridge operation.

After the route is opened to traffic, it can realize the comprehensive interconnection of Hefen all the way across the railway and Pingyang North Street. It is of great significance for Linfen City to alleviate traffic pressure, improve traffic conditions, build a rapid traffic system in the central urban area, improve urban functions, and further optimize the layout of urban areas.

Edit: Liu Cong

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