The top of the main bridge of the Yellow River Bridge of Zhanhua to the Linzi Highway Project is fully broken.

On July 15th, Shandong Expressway Group Zhanhua to Linzi Highway Project Huanghete Bridge Main Bridge Mixed Steel Mixed Steel Mixed Steel Mixed Steel Mixed Steel Mixed Steel Mixed Steel Mixed Steel Mixed Steel Mixed Steel -Salva Liang's accurate position marks the first time in the domestic bridge field with UHPC bridge panel large tonnage and long -distance full section. It has achieved another new leap again.

The Yellow River Bridge is a key control project of the Zhanlin project. It is undertaken by the Group of China Communications No. 1 Public Bureau. The total length is 4630 meters and the main bridge is 962 meters long. It is currently the largest bridge of the lower reaches of the Yellow River. The main beam pushes the weight of over 27,000 tons. It creates the most pushing construction of the lower reaches of the Yellow River. This is the first time in China.

Because the lower reaches of the Yellow River does not have navigation conditions, the bridge across the Yellow River beams can be carried out in accordance with the general cross -river bridge construction model, and water transportation and lifting are carried out. Therefore Compared with the traditional top push method, the override surface push construction method can shorten the construction period of more than half a year.

In order to realize the construction of ultra -long and large weight with bridge panels, during the prefabrication of the bridge panel, the project innovation uses the uhpc ultra -high -performance concrete without coarse aggregate. ℃ High -temperature steaming "mode, the thickness of the bridge panel design board is only 17 cm, and the design strength is as high as 150MPa. Compared with the conventional bridge panel, the thickness is nearly 34 cm, and the intensity is doubled. Under the same conditions, the bridge can be reduced by 30 30 self -weight of the bridge. More than %, effectively avoid the risk of bridge panels when pushing the top of the whole section, ensure that the main bridge with a length of 962 meters can be directly pushed; in the installation of the steel structure, the project adopts the method of "transformation into zero". The panel and steel components of the combination beam are transported and lifted according to the "module". The "accumulating wood" at the bridge head position is formed to minimize the maximum transportation weight from 410 tons to 80 tons, which greatly reduces safety risks and construction costs; push on the top push; During the process, the project draws on the principle of "flow production line", and through the "bridge assembly -slip -sliding -wet seam pouring -top push push" flowing operation, each push -round operation time has been reduced from 30 days to 30 days to 15 days. In addition, the project establishes a construction monitoring center integrating automation, informatization, and intelligence, and introduces intelligent step -type top push systems, remote wireless stress monitoring and Beidou satellite positioning systems to achieve real -time controlling construction operations, ensuring the bridge top of the bridge top Push the line accuracy to avoid the deformation of the steel beam and the cracking of the panel.

The Qinbin Expressway, which has been connected to the north of the Linzi highway project, was connected to the north, and the Linkin Expressway under construction in the south. The main line is 107.6 kilometers. The budget investment is 19.56 billion yuan, the two -way six lanes, and the design speed is 120 kilometers per hour. After the completion of the project, the project is of great significance to improve the province's highway network, promote the interaction of the high -efficiency ecological zone of the Shandong Yellow River Delta and the provincial capital's economic circle, and help the high -quality development of the Yellow River Basin.

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