The first taste in China!The first steel box beam in the west anchor area of Lingyuyang Bridge in the Shenzhen -Middle Channel is pushed in place

Text, Figure/Yangcheng Evening News reporter Wang Danyang correspondent Chen Xubin

On July 14th, after half a month of fighting at the maritime work staff, the first steel box Liang of Lingyuyang Bridge West anchor in the Lingyuyang Bridge of the Shenzhen -Central Channel S05 successfully completed the 101 -meter top push operation.

It is reported that the construction of the top steel box beam in the west anchor of Lingyuyang Bridge is the first time that the domestic attempts are in the open seas. Ultra -high pier, large span, and large tonnage steel box beams are continuously pushed. The project will be 10 this year. At the end of the month, the construction operation of all 6 slices of steel box beams was completed at the end of the month, laying a solid foundation for the successful Heilong Bridge.

The first steel box beams that were pushed this time were about 86.5 meters long and weighing about 1,200 tons. At the installation and construction site of the steel box beam in the west anchor area, the "Tianyi" lifting ship was lifted on the temporary support pier in the 6, 5, and 4 cross -steel box beams in turn. On the whole, the front and rear guide beams are set, and the step -type top push equipment is used to push the steel box beam as a whole to the design position.

According to reports, a total of 36 sets of linkage control systems were invested on the spot, driving 72 sets of top push jacks to complete the first stages of the first steel box beam.

The construction of the top of the Lingyuyang Bridge West anchor Steel Box Beams is the focus of construction and difficulties of the entire bridge. On the one hand, due to the influence of heavy ships and on -site structurals, the top -pushing construction spikes and difficulty are large, and the line positions need to be adjusted repeatedly to highly controlled the requirements of the line; on the other hand The wind load affects the large vibration amplitude and high risk coefficients. The top -pushing construction requirements are refined operations. The stress and refined adjustment of the stress and refined adjustment of the stress of the steel box beam must be monitored in real time.

In addition, the top push operation environment of the steel box beam is complicated. The operating environment is close to the main bridge. The height of the box beam is high. Sexual design requirements are relatively high.

"High -temperature thunderstorm weather has also exacerbated the difficulty of construction. In order to ensure the successful completion of the top push construction of the steel box beam in the west anchor area of ​​the Lingyuyang Bridge, the project department implements the leadership system and increases safety measures such as on -site safety officers and protective supplies. Under the premise of safety measures such as rainproof, anti -slip, ensure the smooth completion of construction operations in the bridge in the weather such as heavy rain. "Ren Liangliang, deputy chief engineer of Poly grows up the Shenzhen -Middle Channel S05 bid project.

At present, the installation and construction of steel box beams in the west anchor area of ​​the Lingzhangyang Bridge in the Shenzhen -Middle Channel is being progressing steadily in accordance with the plan. At the end of October this year, the top 6 steel box beams will be completed. The Shenzhen -Middle Channel is expected to be opened to traffic in 2024, and after completion, it will become a straight channel connecting the East and West Straits of the Pearl River Estuary.

Source | Yangcheng Evening News · Yangcheng School

Responsible editor | Yang Chuyi

School counterpart | Xie Zhizhong

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