Construction History
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Construction Background
Nanjing Yangtze River Third Bridge It is a key construction project during the "10th Five-Year" period of China. It is also one of the five strategic crossing rivers in Jiangsu Province. It is in the context of Nanjing Grand Development, and the Nanjing Municipal Party Committee has accelerated a new achievement of Nanjing University Transportation. It is also echo. The development of Jiangsu Province along the Yangtze River is a result of the leading leading project along the Yangtze River. Nanjing Yangtze River Third Bridge Because it is an important part of Shanghai to Chengdu National Road main trunk line, it is usually necessary to first build Nanjing Yangtze River Erqia, but considering the development needs of Bagua Asia. In the early days of the construction of Nanjing Yangtze River Erqiao, the preliminary plan has begun.
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Construction History
December 5, 1997, Nanjing Municipal Government to relevant A "report", pointed out: "Building Nanjing Yangtze River Sanqiao is in line with the overall planning of Nanjing, can further drive the economic development of the southern Nanjing city; building Nanjing Yangtze River Third Bridge is a highway, the provincial road network construction and satisfaction The needs of river traffic. "This report analyzes the favorable conditions of the construction of the three bridges and puts forward specific recommendations for preparations.
In 1998, the early work of Nanjing Changjiang Third Bridge began to start. At that time, the engineers participating in the Nanjing Yangtze River Second Bridge (ie Nanjing Bagua Yangtze River Bridge) construction two bridges, while doing three bridge planning .
Nanjing Dashengguan Changjiang Bridge Construction Scene (2 photos)
2001, the Ministry of Transport of the People's Republic of China approval Sanqiao preliminary design, the same year's National Environmental Protection Administration approval Three bridge engineering environmental impact report.In October 2002, the National Development and Reform Commission of the People's Republic of China officially approves the project; in November of the same year, the Construction Headquarters was established, and the deputy mayor of Nanjing, Dai Yongning and Nanjing City Deputy Secretary-General Wei Zhuqin have served as the general commander of the construction; in December of the same year On the 24th, the Nanjing Yangtze River Third Bridge founded.
From March 10 to 11, 2003, 19 Chinese bridges, 19 people, including Chen Xin's academicians, arguing the three-bridge deep water foundation key technical program in Dongjiao Hotel in Nanjing; In July, the Nanjing Yangtze River Sanqiao Construction Headquarters held a five-day meeting, specializing in construction techniques and processes such as manufacturing, installation of steel tower; on August 29, the same year, Nanjing Yangtze River Third Bridge floating in place, The main bridge of Nanjing Changjiang Sanqiao officially entered the construction stage.
In June 2004, the Nanjing Yangtze River Third Bridge realized water.
In May 2005, Nanjing Yangtze River Sanqiao main bridge was in advance, in August 2005, in the same year, Nanjing Yangtze River Sanqiao main body was completed; in September of the same year, the Nanjing Yangtze River Third Bridge was completed as a whole; on October 7, the same year, Nanjing The Yangtze River Third Bridge officially opened.
On December 20, 2019, Nanjing Changjiang Third Bridge is renamed Nanjing Dashengguan Changjiang Bridge.
Bridge location
Nanjing Dashengguan Changjiang Bridge is located in the upstream of the Nanjing Yangtze River Bridge, the Dasheng Gong, Nanjing Dashengguan Changjiang Bridge (Railway Bridge) is about 1.55 Thousands of rice, there are about 350 km from the Yangtze River, cross the two sides of the Yangtze River, the starting point of the North Shore is the "National Expressway G42) (National High Speed G42) Zhang Shi, Northern Huai Highway (national high speed G25) and Ninghe Expressway; Nan'an endpoint is Liu Village, Liu Zun, who is in Yuhuatai District, Tongxiang Road, Tongji, Nanjing, Ring Expressway (National Expressway G2501) .
Bridge design
Bridge structure
Nanjing Dashengguan Changjiang Bridge main bridge is the double tower double cable-bearing steel tower steel box beam slave, China The first steel tower palade is also the world's first arc-shaped steel Tower palace, its arc-shaped steel tower design has the characteristics of innovative and enhanced architectural beauty. Tower and under the bridge, the bottom of the reinforced concrete structure, the above part of the bridge is steel structure, and four interoperability is set through the whole line. It is Liu Village, which is Liu Village, Tongwa Village, Tongwa Interchange, and Zhang Store. .
Design parameters
Nanjing Dashengguan Changjiang Bridge is about 14.89 kilometers, including 4.744 kilometers long, the main bridge is 648 meters, Soda is 215 meters high The bridge spans are arranged to be 1288 meters (63 + 257 + 648 + 257 + 63 m), the bridge and the connection line are about 15.6 kilometers long, the south leading bridge is 680 meters long, and the northern bridge is 2780 meters long. The South Coast Wiring is 3.083 kilometers long, and the north bank wiring is 7.773 kilometers long. According to the two-way 6 lane highway standard, design driving speed is 100 kilometers / hour, the bridge standard width is 32.0 meters, the design flood frequency is 1/300, the maximum navigation water level is 8.71 meters; design load car - super 20, trailer -120, The design wind speed is 100 years, 10 meters high, 10 minutes average wind speed 31.7 meters / sec, design earthquake intensity VII degrees, Soda design ship impact Lishiqiao to 13500 thousand Newton, cross bridge to 27,000 kineton.
Operation situation
Ticket fare
As of the end of 2018, according to the Jiangsu Provincial Price Bureau, the Ministry of Finance, the Ministry of Communications on Nanjing Dashengguan Changjiang Bridge The approval of the year is officially identified as 30 years, which is calculated from the date of charge on October 7, 2005, will be charged until October 7, 2035. According to the bridge charging standard, the following truck pass fee is 20 yuan per second, and the private car offer is 15 yuan per time.
Passage
Nanjing Dashengguan Changjiang Bridge Weighing System has opened anti-cheating function, please do not take illegal means such as skip, winding pounds, keep Entither 5 km / h in the lane.
Nanjing Dashengguan Changjiang Bridge HD monitoring camera system fully covers the entire bridge segment, the anti-replacement card software has been fully upgraded, can deal with the card, pad steel plate, use jack, rush Card and other peeled expense behavior.
During the driving process of the Yangtze River Bridge in Nanjing, such as the accident, the monitoring center calls waiting for the rescue.
Nanjing Dashengguan Changjiang Bridge Expressway speed limit sign indicated that the maximum speed rate of this section is 100 kilometers / hour, the minimum speed is 60 km / h.
Transportation traffic
As of February 8, 2018, the daily car traffic in the Changjiang Bridge in Nanjing has exceeded 60,000.
Construction results
Technology Puzzle
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Experience lack
Nanjing Dashengguan Changjiang Bridge is built before the completion of any steel tower bridge design, construction experience can be used, the scientific and technological content of steel tower bridge is high and the construction is difficult. The Dashengguan Bridge Soda is 215 meters high, which is equivalent to the height of the two Jinling Hotel. It is designed with steel retro tower. The lower beam is below the tower, and the above part is the steel tower. The machining process requires high, the hoisting is difficult, and there is no mature experience in China. It can follow the highlight characteristics and difficulties of steel tower construction.
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Hydrological complex
Nanjing Dashengguan Changjiang Bridge's South Mainy is just in the Yangtze River Lord Hong, in the flood period, the water depth of the water reaches about 50 meters, and the largest water depth of China's domestic bridge pier is only more than 30 meters, the construction is extremely difficult, and it is necessary to complete the laundry in a dry season, and the construction requirements are higher.
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Construction period is tight
Nanjing Dashengguan Changjiang Bridge construction cycle has two major nodes First, in 2004, it realizes the penetration water during the end of 2004. Second, the 2005 typhoon has completed the main bridge. This is a higher and faster requirements for the construction of the bridge tower, and the steel tower bridge is the first construction in China, which is not only quality, but also the speed, foreign bridge experts predict that this idea is impossible.
Research results
In January 2008, Nanjing Dashengguan Yangtze River Bridge has a "Extra-large Span Bridge Steel Tower and Deep Water Foundation Design Construction Innovation Technology" by China National Science and Technology Progress Second prize.
Honor recognize
2007, Nanjing Dashengguan Changjiang Bridge won the Science and Technology Award of China Highway Society (Special Award).
In July 2007, Nanjing Dashengguan Changjiang Bridge won the 24th International Bridge Conference (IBC) Year Award - "The Gustavs Lindens" award, this is the award Since the first awarded China Bridge Engineering.
In March 2008, Nanjing Dashengguan Changjiang Bridge won the 7th Chinese Civil Engineering Zhan Tianyou Award.
2009, Nanjing Dashengguan Changjiang Bridge won the 2009 National High-quality Engineering Bonus Prize.
Value meaning
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Transportation significance
Nanjing Dashengguan The Yangtze River Bridge is one of the five strategic crossing rivers in Jiangsu Province in 2010. It is the pilot project of Nanjing "rich people in the city, the first to achieve modernization", and is also an important cross-river project to implement the development strategy of the river. The completion of the Dashengguan Bridge has improved the development of Nanjing Jiangnan and Jiangbei New District, which promotes the development of Nanjing, the development strategy of Nanjing, and has entered the development of the city of Nanjing. The traffic pattern of the large outer ring, solves the transit traffic issues in Nanjing, and the Nanjing Bagua Yangtze River Bridge, the Ring Road, the Phuzhu Highway and Ningxia Road, and the Ninghuai Expressway, the closing the higher speed and Nanjing Yangtze River Fourth Bridge forms Nanjing outer ring fast passage; in the high-speed, Ning Expressway, Ningtong Expressway, Ninghang Expressway, Ninghuai Expressway, Ninghai Expressway, Ning Ma Expressway. At the same time, it also improves the investment environment in Nanjing and the surrounding area, further enhances the advantages of Nanjing's traffic location, and gives full play to Nanjing as the status and role of urban cities in the middle of the Yangtze River, and greatly promotes the pace of urbanization construction in Nanjing. At the same time, I have echoed the river development strategy, and the common prosperity and long triangulation of the city circles are all important. (Sina News, People's Network, China News Network Review)
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Technical Meaning
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Economic significance
Nanjing Dashengguan Changjiang Bridge completed the previous China without a steel tower bridge, 80% of the steel tower bridge in the world concentrated in Japan. Steel tower bridge can shorten the construction period, reduce the self-weight of the bridge, improve structural seismic performance, and increase structure security. Dashengguan Bridge not only retains the experience of China's bridge, but the application of its equipment has also improved the new level of China's bridge construction equipment. In order to ensure the hoisting of the Great Shengguan Bridge, the Construction Headquarters specially invite the French Orthodontic Corporation of the Tower crane to make two extra large tower cranes for the big victory bridge, 252 meters high, is the world's first high tower crane . This hanging tower participating in the construction of the big victory bridge was later used by Su Tong Bridge, making the construction difficulty of more than 300 meters high tower in the Sutong Bridge. In addition, the Dashengguan Bridge completed the foundation construction in a dry river in the Yangtze River, created a new record of the deepest and minimal construction water level and the least work period in the Yangtze River. (Sina Review)
Nanjing The construction of the Great Shengguan Changjiang Bridge did not use the government a penny. It is the first project for the "0" investment in Jiangsu Province. This is consistent with the goal of the Great Shengguan Bridge in the initial stage of construction to "financing new results". The total investment of the Dashengguan Bridge is 30.9 billion yuan. It is just a rapid development of Nanjing Urban Construction, so the new type of market operation mode is adopted. In 2004, after the Dashengguan Bridge successfully completed the capital increase, it was established in accordance with the modern enterprise system - Nanjing Yangtze River Third Bridge Co., Ltd., with marketization, and multi-party funds. The Construction Headquarters of the Third Bridge of Nanjing Yangtze River is specific to the construction of the project. In 2007, he was handed over to the company's management. After the provisions of the fee period, he also paid to the Nanjing Municipal Government. After the capital increase of the Dasheng Guan Bridge, the 41 million funds of Nanjing Changjiang Sanqiao Co., Ltd. will also give the government, truly realize the government "0" investment. (Huaxia Jingwei Net Commentary)