Bridge event: The main tower of the south tower of the Longtan Yangtze River Bridge, the pouring of the G3 Tongling Bridge South main pier

01154 meters of high tower "Hand in Hand in Hand" on the main tower on the main tower of the Yellow River Special Bridge smoothly poured

On July 1, the beams on the main tower of the Yellow River Bridge were smoothly poured. From the air overlooking the air, the "steel long dragons" lying on the Yellow River have been here.

The column of the "Bridge Tunnel Innovation Week" has reported on the Yellow River Bridge of the High Speed ​​Expressway, please click the figure above

The total length of the Yellow River Bridge is 4630 meters, and the main bridge span 962 meters. It is the largest bridge with the largest span of the lower reaches of the Yellow River. Create the most pushing construction of the lower reaches of the Yellow River, and is the first time that the country has adopted a large -scale UHPC UHPC ultra -high -performance concrete project in the country. The main bridge of the bridge is 154 meters high in the north and south tower, and the two towers are connected to the upper and lower beams. , 5.0 meters high, divided into two pouring, a total of 645.4 square meters of concrete is needed.

The total length of Zhanhua to Linzi Highway is 107.58 kilometers, with an estimated investment of 19.56 billion yuan, a design speed of 120 kilometers/h, and a two -way six -lane lane. It is planned to be opened to traffic in 2022. As part of the north -south vertical transportation roads in the coastal areas of North China and East China, the project will further improve the layout of the highway network in the northern part of Shandong after the opening of the traffic. It is of great significance to help the high -quality development of the Yellow River Basin. (Source: Volkswagen Daily)

02G3 Tongling Yangtze River Gong Railway Bridge South Main Dun Chengtai pouring is completed

At 5 pm on July 2nd, the last concrete pouring of the G3 Tongling Yangtze River Gongtie Bridge No. 4 was successfully completed. At this point, the construction of the south of the bridge was officially transferred to the construction stage of the tower.

The main pier Chengtai is one of the key control nodes of the bridge. The G3 Tongling Yangtze River Gong Railway Bridge southern main pier area is 3373.5 square meters, and the concrete is 7 meters high. In order to ensure the quality of concrete and to ensure the maximum reduction time of the concrete maintenance cycle, the project department further optimizes the construction plan. The tablet concrete, the concrete of Chengtai is divided into 2 layers of pouring, and the height of each pouring is 3.5 meters.

It is reported that the first pouring was opened on the evening of June 7, and the builder had completed the pouring work of the main pier inheritance of Taiwan's large -volume concrete in just 24 days. The main pier 4 is 23614.5 cubic meters of concrete and consumes 3498.3 tons of steel. The total amount of steel can be built with a total of half Eiffel Tower. The successful pouring of the main pier 4 main pier marks that the main pier on the south bank of the bridge will enter the visual construction stage. (Source: Tongling News Network)

03 Longtan Yangtze River Bridge Southern Main Tower Catal

At 23:40 on June 30, the Longtan Yangtze River Bridge controlled control project, the South Tower column was successfully capped, and the project construction made breakthroughs. Longtan Yangtze River Bridge is located between the Fourth Bridge of the Yangtze River and Runyang Bridge in Nanjing. It is connected to Yizheng City in Yangzhou in the north and Nanjing City and Zhenjiang Jurong City in the south. The cross -river bridge adopts a parallel cable -faced steel box beam suspension bridge with a main crossing of 1560 meters, one span through the Yangtze River Tianyu. The bridge and bridge tower is a reinforced concrete structure. The northern tower column is 235.5 meters high and the southern tower column is 237.5 meters high. Earlier, the northern tower pillar of the Longtan Yangtze River Bridge was capped in January this year. (Source: Yangtze Evening News)

04 Longxiang Bridge main channel bridge penetration

At 21:30 on June 30th, after 15 hours, the 45 -meter steel box beam across the Longxiang Bridge and the main channel of the introduction project was successfully improved in place. The construction was on the fast lane.

Foshan Longxiang Bridge and Quotation Project are an important part of the West Top South Ring Road in the Foshan Ring Road. The Longxiang Bridge is 1549.04 meters in length, and the main span is (118 + 2 × 202 + 93) Mi -steel hybrid continuous beam. The construction of the 4th 75 -meter steel box beam is the most critical construction node in the entire project cycle, and it is also the most complicated and difficult process of the construction technology of the entire project. In order to ensure the smooth progress of the lifting work, the project department continuously optimizes the lifting technology solution and deduced the lifting process to ensure the accuracy of the steel box beam installation. The 75 -meter steel box beam was successfully improved, creating a large section of steel beams participating in the tidal inner river and densely navigation areas, which did not require large -scale water floating lifting equipment to enhance Heilong as a whole, laying a solid foundation for subsequent extensive promotion and application of international leading technologies.

The project is expected to penetrate the bridge before December 31, 2022. At that time, it will further strengthen the connection between Chancheng, Nanhai, Gaoming, and Sanshui, Foshan City, greatly promote the economic development of the regional economic development of Foshan, further improve the regional transportation structure, improve Cross -river channel transportation capabilities are of great significance to promote the social and economic integration of the Guangdong -Hong Kong -Macao Greater Bay Area. (Source: Surging News)

05 The right hole of the Wozigou Tunnel of the River High Speed ​​Speed ​​is smoothly pending through

On the morning of July 1st, the right hole of the Wozigou Tunnel of the Special Tunnel of the Yibin to Jinyang Section of the Yangtze River Expressway went through smoothly, marking that the construction of the high -speed project along the Yangtze River has made breakthrough progress again. The tunnel is expected to achieve a double -range in August this year, and it is planned to be opened to traffic in 2025.

It is understood that the Wozigou Tunnel is located in Dexi Town, Jinyang County, Liangshan Prefecture. It is a separate small net distance tunnel. The left line of the tunnel is 3483 meters long and the right hole is 3478 meters long. The tunnel is in the transition zone of the Sichuan Basin to the Yunnan -Guizhou Plateau. It mainly crosses the horizontal mountainous area in the northern part of the Yunnan -Guizhou Plateau. It is parallel to the Jinsha River. The geological conditions of the tunnel are extremely complex. The tunnel surrounding rocks are mainly IV and V -level, of which IV enclosure accounted for 59.38%, and the proportion of V -Class surrounding rocks reached 40.62%. high. In response to the complex geological conditions of the Wozigou Tunnel, the crushing of the surrounding rocks, the poor self -stability capacity and the large amount of water volume, the project team has formulated "soft and short, pumping, prediction, strengthening, dynamic measurement, dynamic change, dynamic change, dynamic change, dynamic changes, dynamic changes, dynamic changes, dynamic changes On -site control measures with the principles of closure and synchronization. The construction tasks were completed within 20 months, and the "three zero" goals of "zero safety accidents, zero quality accidents, and zero pollution accidents" were achieved. (Source: Cover News)

06 Yichang Wujiagang Yangtze River Bridge successfully passed the special acceptance of environmental protection and soil and water conservation

Recently, the Yangtze River Bridge of the Yichang Wujiagang has successfully passed the environmental protection and soil and water conservation acceptance, marking the major results of the project's ecological environmental protection work. The inspection and acceptance working group checked the construction of the Wujiagang Bridge at the project site, the implementation of the Wujiagang Bridge, the implementation of soil and water conservation, and environmental protection measures, listened to the reports of the participating units on water security facilities and environmental protection work, and checked the acceptance relevant information.

The acceptance team agreed that the ecological protection measures of the Wujiagang Yangtze River Bridge project had good effects, complied with the conditions for soil and water conservation facilities and the environmental protection acceptance conditions, and agreed to pass the acceptance. After the meeting, the project company actively promoted the filing work. At present, it has successfully completed the filing of the Hubei Provincial Department of Water Resources and the environmental protection acceptance website for the completion of environmental protection acceptance websites for construction projects. (Source: Zhongxin.com)

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