Brief introduction of Nanjing Yangtze River Bridge
Nanjing Yangtze River Bridge is located in the middle section of Xiaguan, Fuzhou Gulou, Nanjing, on the north side of Pukou Bridge. It is the first multi-storey railway line and highway bridge designed, manufactured and built by China on Xiangjiang River. It has important practical significance in the history of highway bridges in China and the history of bridges in the world. It is a key achievement in China's economic and social development and a key milestone in China's bridge construction. It is called "the bridge of ambition".
Xiangjiang Bridge is a landmark building in Suzhou and a famous tourist attraction, and it has been included in the 48 scenic spots in Jinling, Nanjing. From 1970 to 1993, it hosted presidents, heads of state and 600 delegations from many countries and regions in turn, and countless tourists from all over the world visited here.
The capital construction of Nanjing Yangtze River Bridge lasted eight years, with an investment of 287.58 million yuan, 38.4 1 10,000 cubic meters of concrete and 66,500 tons of stainless steel plates. 1960 was listed in the Guinness Book of World Records as "the world's largest railway bridge".
How long is Nanjing Yangtze River Bridge?
This bridge is an important traffic project in East China. The top floor is a four-lane bridge with a road width of15m and a total length of 4,588m. There are crosswalks with a width of more than 2m on both sides. The railway bridge on the next floor is 677m long and14m wide. It is laid by a double-track system, and multiple trains can open doors at the same time. The railway line connects the Jin-Pu Railway and the Shanghai-Nanjing Railway, which enables the China traffic artery Beijing-Shanghai Line to be fully connected, which is the key and foundation of the north-south traffic in China.
Development history of bridge capital construction
During the period of 1956, the Bridge Engineering Bureau of the State Railway Administration decided to carry out the survey and design scheme of Nanjing Yangtze River Bridge;
1August, 958, the bridge location scheme of pagoda concrete slab bridge was defined as the bridge location proposal scheme, and the decision was made according to the design scheme of highway-railway dual-purpose bridge;
1958 In September, the Nanjing Yangtze River Bridge Construction Committee was established, with Hui Yuyu as the director and Peng Chong, Chen Moer as the deputy directors.
1960 65438+1October 18, the steel enclosure of pier No.9 in Zheng Qiao floated and drained, and the Nanjing Bridge was announced to be started;
In August 1967, the bridge was closed. Xu Zeng, then commander-in-chief of Nanjing Military Region, transferred about 100 heavy tanks and drove across the bridge deck at the same time to test the quality of the bridge.
On September 30th, 1968, the railway bridge was first completed and opened to traffic.
1968 65438+On February 29th, the bridge was declared completed and opened to traffic;
On September 2 1 day, Chairman Mao came to Jiangsu Province to inspect Nanjing Yangtze River Bridge.
1 18 Heavy tanks crush Nanjing Bridge.
In 1950s and 1960s, the international situation was extremely anxious, and China paid too much attention to combat readiness training. At that time, Nanjing Yangtze River Bridge, as the first large and medium-sized river-crossing bridge built by China people since the founding of New China, became the only safe passage connecting the streets and lanes, and the military and civilians all over the country were proud of it.
From 6: 438 to 9: 69, accompanied by General Xu, Chairman Mao inspected the Nanjing Military Region and visited the Nanjing Yangtze River Bridge. Standing on the bridge, I asked if this Xiangjiang Bridge could meet the requirements of combat readiness training.
Lao Xu feels sad about whether the daily tasks can be successfully completed: when the bridge is completed, China people will show off their prestige and tourists will keep coming. At the Standing Committee of the CPPCC in the military sub-regions, everyone had different suggestions for the heavy tank transport team to cross the bridge deck, and the voices of opposition came one after another. The key point is the concern about bridge quality and deck damage.
General Xu spoke out and instructed relevant bridge experts to participate in the construction of Xiangjiang Bridge, and took out the data of heavy tank transport team in a very short time. After continuous discussions with authoritative experts in construction, two anti-tank vehicles with large tonnage and weighing about 32 tons were transferred back for testing, and the test data and information were reported to General Xu.
In order to prevent heavy tanks from running over the bridge deck, Lao Xu proposed to spread three or four layers of embroidered pillows on the bridge deck, so that the running water would be wet before the convoy left. At the same time, heavy tanks are required not to adjust the angle or turn around during the whole bridge deck driving process.
On the morning of September 25, four three-wheeled motorcycles went ahead, followed by two propaganda vehicles, and the four major broadcasts carried out propaganda planning all day. The third car is the command car of General Xu, who waved to many people with quotations from Chairman Mao.
The infantry fighting team was slightly inferior and slowly came to the bridge. At about eleven o'clock, all the transport teams are under the bridge deck. According to the news media at that time, 600,000 people witnessed this spectacular time interface.
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