Xi announced that the Hong Kong-Zhuhai-Macao Bridge, which was built by China Railway Construction Corporation, was officially opened
The steel giant leaps into the ocean and connects the three places to achieve a new leap. At 9 o'clock in the morning of October 23, the Hong Kong-Zhuhai-Macao Bridge, which was built by China Railway Construction Corporation, was filled with warm applause. General Secretary of the CPC Central Committee, President of the State Council and Chairman of the Central Military Commission Xi Jinping opened the ribbon for the Hong Kong-Zhuhai-Macao Bridge and included China. The representatives of the 20 builders, including the employees of Tiejian, shook hands and took a group photo, congratulating them on their achievements.
At this point, the world’s longest cross-sea bridge, which has been brewing for more than 30 years and tens of thousands of builders for nine years and condensing a hundred years of dreams, has finally been completed.
The Hong Kong-Zhuhai-Macao Bridge starts from the Hong Kong Port artificial island near the Hong Kong International Airport. It connects the Zhuhai and Macao artificial islands westward across the Bohai Sea. It stops at Zhuhai Hongwan and has a two-way six-lane expressway with a design speed of 100. After the opening of the bridge, the land transit time of Guangdong, Hong Kong and Macao will be shortened from the current three hours to 30 minutes. Guangdong, Hong Kong and Macao will form a “one-hour metropolitan area”, which will completely open up the traffic bottleneck that restricts the three places for a long time.
As the main force of China's major bridge and tunnel construction, in the construction of the Hong Kong-Zhuhai-Macao Bridge, all units of China Railway Construction have participated in the construction of the Hong Kong-Zhuhai-Macao Bridge Approach Bridge, the Hong Kong-Zhuhai-Macao Bridge Gongbei Tunnel and the Hong Kong-Zhuhai-Macao Bridge. Traffic engineering, and undertake the supervision tasks of almost all cement and more than half of the steel beam and plate and part of the tenders required for the main project of the Hong Kong-Zhuhai-Macao Bridge.
The China Railway 14th Bureau Group undertook the construction of the Hong Kong-Zhuhai-Macao Bridge approach. The Hong Kong-Zhuhai-Macao Bridge spans the busy shipping channel of the Pearl River. In order to ensure the normal navigation of large ships, the bridge piers are more than 100 meters long. The approach bridges are like the ramp overpasses. The vehicles on the bridges 100 meters high are slowly introduced into Zhuhai. Area. The 1777-meter Qianshan River Bridge is a difficult and difficult point control project for the connecting line. The bridge is designed as a continuous beam of corrugated steel webs with a main span of 160 meters. It is the largest spanned corrugated web bridge in China.
The biggest feature of this type of bridge is that the web adopts the corrugated steel plate instead of the traditional reinforced concrete structure, thus completely solving the common quality problem of the cracking of the continuous girder web. The combined structure of concrete and corrugated steel plate greatly improves the seismic performance. As a city bridge, its biggest advantage is that it can be replaced and repaired without interrupting traffic.
The China Railway 18th Bureau Group participated in the Zhuhai Link Project of the Hong Kong-Zhuhai-Macao Bridge, including the Gongbei Tunnel, the Gongbeiwan Bridge, and the Zhuhai Link Artificial Island. The Gongbei Tunnel is the core control project of the Zhuhai Link of the Hong Kong-Zhuhai-Macao Bridge. The world's largest section road tunnel.
The Gongbei Tunnel is 2,741 meters in length and is the only channel connecting the main project of the Hong Kong-Zhuhai-Macao Bridge to Zhuhai. The tunnel passes through the Gongbei Port, the largest land entry and exit port in China. The excavation section of the 255-meter excavation section is 336.8 square meters. The size of a basketball court is 21 meters high, which is equivalent to the height of seven or eight floors.
In order not to affect customs clearance at the port, the tunnel construction adopts the world's longest curved pipe curtain, and builds a super “ice bucket” with a length of 255 meters and a diameter of 24 meters, which is equivalent to using 100,000 refrigerators to freeze soft soil and increase its strength. Stability and impermeability, tunnel excavation through "ice bucket" protection.
During the construction period of more than 5 years, it not only ensured the safe and smooth customs clearance of more than 600 million passengers and 160 million vehicles in Gongbei Port, but also created the first "curve pipe curtain + freezing method" construction method in China, the length and tube of the pipe curtain. Both the curtain area and the frozen scale have set a new record for the construction of similar tunnels in the world.
China Railway Construction Electrification Bureau has undertaken the construction of the main project of Hong Kong-Zhuhai-Macao Bridge, including the safety facilities, toll, communication, monitoring, ventilation, lighting, fire protection and supply of the interchange between the Guangdong-Hong Kong boundary line and the Zhudao Port artificial island bridge management area. Construction of traffic, water supply and drainage, lightning protection grounding, integrated pipelines, system integration, construction of traffic facilities at the Hongwan Management Center and construction of communication lines from the main project to the Hongwan Management Center, and included in the above construction contents Equipment procurement, transportation, installation, commissioning and test run.
During the construction, the group widely used BIM technology, system integration integrated management platform, new cable expansion device, new water supply pipe expansion device, self-developed pipeline installation work vehicle, and charging mode compatible with identification of key technologies and innovative application results of Guangdong, Hong Kong and Macau license plates. To overcome the construction problems, and won the national "Workers Pioneer" and other honors.
China Railway Materials Group has supplied almost all of the cement and more than half of the steel beam plates required for the main project of the Hong Kong-Zhuhai-Macao Bridge, and actively introduces domestic and foreign high-quality resource products and advanced industrial products to select the best product brand for the century-old project. .
In recent years, the Materials Group has accumulated rich experience in the construction of multiple passages in Dawan District of Guangdong, Hong Kong and Macao, giving full play to the advantages of material logistics and providing consulting, procurement and management services for the project. The company has successively organized the supply of related materials and equipment to over 6 billion yuan has become an important central enterprise force in the construction of Dawan District, and has also made positive contributions to other infrastructure projects in Dawan District.
The supervision company of China Railway Fourth Survey and Design Institute undertook the construction supervision task of 15.824 kilometers of the bridge project of the Hong Kong-Zhuhai-Macao Bridge in the deep water area.
The supervision department of the Shanghai-Zhuhai-Macao Supervisory Company, the Hong Kong-Zhuhai-Macao Supervisory Company, has always adhered to the principle of strict control, honesty and efficient service, successfully completed the construction of the steel pipe composite pile foundation, prefabricated and installed the non-airway bridge deck, Qingzhou Waterway Bridge and the construction of two navigational tunnels of the Jianghai Channel Bridge, in which the "Chinese knot" high-altitude hoisting and the "steel dolphins" main tower of the navigation hole bridge are vertically hoisted, which is difficult to construct and has high safety risks, and has become a landmark project of the bridge project.