The foundation stone of Nanjing Yangtze River Third Bridge was laid on February 24th, 2002, and its cap was exposed in June, 2004. The main bridge was closed in May 2005, the main body was completed in August 2005 and officially opened to traffic on June 7, 2005.
Nanjing Yangtze River Third Bridge starts from Zhangdian Interchange of Ninghe Expressway in Pukou District in the north and ends at Liucun Interchange of Nanjing Ring Expressway in Yuhuatai District in the south. The total length of the line is about 14.89 km, and the total length of the main bridge is 4.744 km. The bridge deck is a two-way six-lane expressway with a design speed of100 km/h; The total investment of the project is 3.09 billion yuan.
Chinese name: mbth of Nanjing Yangtze River Third Bridge: Completion time: 65438+February 24th, 2002, put into use time: 65438+20051October 7th Location: Nanjing, Jiangsu Province, China Type: Extra-large highway steel tower cable-stayed bridge. Degree: 14.89 km width: 32 m lane size: two-way six-lane design speed: 100 km/h via route: Nanjing Ring Expressway and Shanghai-Chengdu Expressway management organization: Nanjing Yangtze River Third Bridge Co., Ltd.? Construction history, bridge location, architectural design, bridge structure, design parameters, operation, fare, traffic matters, traffic flow, construction achievements, technical problems, scientific research achievements, honor recognition, value significance and construction background. Nanjing Yangtze River Third Bridge is a key construction project during the Tenth Five-Year Plan period and one of the five strategic river-crossing passages in Jiangsu Province. It is the Nanjing Municipal Committee under the background of Nanjing's great development. As the third Nanjing Yangtze River Bridge is an important part of the national trunk line from Shanghai to Chengdu, it should usually be built before the second Nanjing Yangtze River Bridge. However, considering the development needs of Baguazhou, the Second Nanjing Yangtze River Bridge was built before the Third Nanjing Yangtze River Bridge. However, the planning of the Third Nanjing Yangtze River Bridge began at the early stage of the construction of the Second Nanjing Yangtze River Bridge. The construction history of the Third Yangtze River Bridge in Nanjing 1997 12.5 A report submitted by Nanjing * * pointed out: "The construction of the Third Yangtze River Bridge in Nanjing conforms to the overall planning of Nanjing and can further promote the economic development of the southern part of Nanjing; The construction of the Nanjing Yangtze River Third Bridge is to improve the construction of national and provincial trunk highway networks and meet the needs of river-crossing traffic. " This report analyzes the favorable conditions for the construction of the third bridge and puts forward specific suggestions for the preliminary work. During the period of 1998, the preliminary work of Nanjing Yangtze River Third Bridge was started. At that time, the engineers who participated in the construction of the Second Nanjing Yangtze River Bridge were also planning the Third Bridge while building the Second Bridge. In 200 1 year, the Ministry of Transport of the People's Republic of China approved the preliminary design of the third bridge, and in the same year, the State Environmental Protection Administration approved the environmental impact report of the third bridge project. On June 5438+ 10, 2002, People's Republic of China (PRC) and China's National Development and Reform Commission formally approved the Nanjing Yangtze River Third Bridge project. In June of the same year 165438+ 10, the Nanjing Yangtze River Third Bridge Construction Headquarters was established, with Dai Yongning, deputy mayor of Nanjing, and Wei, deputy secretary general of Nanjing, successively serving as the commander-in-chief of the Third Bridge construction; On February 24th of the same year, the foundation stone was laid for 65438+ Nanjing Yangtze River Third Bridge. From 10 to13, 2003, nine national 19 famous bridge and port and shipping experts, including Academician Xin Chen, demonstrated the key technical scheme of the deep water foundation of Nanjing Third Bridge in Nanjing Dong Jiao Hotel. In July of the same year, the construction headquarters of Nanjing Yangtze River Third Bridge held a five-day meeting to study the construction technology and technology of steel tower manufacturing and installation. On August 29th of the same year, the dumbbell-shaped steel box of Nanjing Yangtze River Third Bridge floated in place, and the main bridge of Nanjing Yangtze River Third Bridge officially entered the construction stage. In June 2004, the third Nanjing Yangtze River Bridge emerged from the water. In May 2005, the main bridge of Nanjing Yangtze River Third Bridge was closed ahead of schedule; In August of the same year, the main body of Nanjing Yangtze River Third Bridge was completed; In September of the same year, the Nanjing Yangtze River Third Bridge was completed as a whole; In the same year1October 7 10, the Nanjing Third Yangtze River Bridge was officially opened to traffic. Bridge location Nanjing Yangtze River Third Bridge is located at Dashengguan, about 19 km upstream of Nanjing Yangtze River Bridge, about 1.55 km downstream of Nanjing Dashengguan Yangtze River Bridge, and about 350 km away from the Yangtze River estuary. It spans both banks of the Yangtze River, starting from Zhangdian Interchange of Ninghe Expressway (G42 National Road) in Pukou District and connecting Ninghuai Expressway (G25 National Road) and Ninghe Expressway in the north. The south bank ends at Liucun Interchange in Yuhuatai District, and connects to Nanjing Ring Expressway (National Highway G250 1) to the east. Architectural Design Bridge Structure The main bridge of Nanjing Yangtze River Third Bridge is a steel box girder cable-stayed bridge with twin towers and double cable planes. It is the first cable-stayed bridge with steel tower in China and the first curved cable-stayed bridge with steel tower in the world. Its curved steel tower is novel in design, which enhances the architectural beauty. The tower columns and lower beams below the bridge deck are reinforced concrete structures, and the parts above the bridge deck are steel structures. There are four interchanges in the whole line, namely Liucun Interchange, Tianhou Village Interchange, Gaowanglijiao Interchange and Zhangdian Interchange from south to north. Design parameters The total length of Nanjing Yangtze River Third Bridge is about 14.89km, in which the river-crossing bridge is 4.744 km long, the main span of the bridge is 648 m, the tower height is 2 15m, and the span layout is1288 m (63+257+648+257+63 m). The south bank wiring is 3.083 kilometers long and the north bank wiring is 7.773 kilometers long. The whole line is built according to the standard of two-way six-lane expressway, with the designed driving speed 100 km/h, the standard bridge width of 32.0 m, the designed flood frequency 1/300, and the highest navigable water level of 8.71m; Design load-over grade 20, trailer-120, design wind speed 100, 10 meter high, 10 minute average wind speed 3 1.7 m/s, design seismic intensity VII, and design ship impact force of cable tower along the bridge. The operation of the main bridge of Nanjing Yangtze River Third Bridge The ticket price was as of the end of 20 18. According to the reply of Jiangsu Provincial Price Bureau, Finance Department and Communications Department on the charging period of Nanjing Yangtze River Third Bridge, the charging period of this bridge is officially determined to be 30 years, starting from the charging date of 2005 10/7, and charging to 2035 10/7/kloc-0. According to the toll standard of the bridge, the toll for cars with less than 7 people is 20 yuan per car, and the discount for private cars is 15 yuan. Traffic Matters The weighing system of Nanjing Yangtze River Third Bridge has turned on the anti-cheating function. Please don't take illegal measures such as jumping pounds or winding pounds, and keep entering the driveway at a uniform speed of 5 km/h. The high-definition surveillance camera system of Nanjing Yangtze River Third Bridge covers the whole bridge section, and the anti-card-changing software is fully upgraded, which can cope with various behaviors such as changing cards, padding steel plates, using jacks and punching cards. During the driving of Nanjing Yangtze River Third Bridge, in case of vehicle breakdown and other accidents, call the monitoring center in time to wait for rescue. The speed limit sign of Nanjing Yangtze River Third Bridge shows that the maximum speed limit of this section is 100 km/h, and the minimum speed limit is 60 km/h. As of February 8, 2008, the average daily traffic volume of Nanjing Yangtze River Third Bridge has exceeded 60,000 vehicles. Lack of experience in technical problems in construction results. Before the completion of the third Nanjing Yangtze River Bridge, there was no experience in the design and construction of steel tower bridges in China, which was high in science and technology and difficult to construct. The pylon of Nanjing Yangtze River Third Bridge is 215m high, which is equivalent to the height of two Jinling hotels. The steel concrete tower is designed, with the concrete tower below the lower beam and the steel tower above. The outstanding characteristics and difficulties of steel tower construction are high processing technology requirements, difficult hoisting and lack of mature experience in China. The hydrology of the steel tower of this bridge is complicated. The south main pier of the third Nanjing Yangtze River Bridge is located on the main stream of the Yangtze River. During the flood, the water depth here is about 50 meters, while the maximum water depth at the pier foundation in China is only more than 30 meters. The construction is extremely difficult, and it requires a high time limit to complete the pouring of the pile caps in the dry season. There are two major nodes in the construction period of Nanjing Yangtze River Third Bridge. One is to realize the outflow of the cap in the dry season in 2004, and the other is to complete the closure of the main bridge before the typhoon comes in 2005. This puts forward higher and faster requirements for the construction of the bridge tower, and the steel tower bridge is the first construction in China, which requires not only quality but also speed. Foreign bridge experts predict that this idea is impossible to realize. Scientific Research Achievements In June 5438+October 2008 10, the Third Nanjing Yangtze River Bridge won the second prize of China National Science and Technology Progress Award for its "Innovative Technology Research on Design and Construction of Super-long Span Bridge Steel Tower and Deep Water Foundation". Honorary recognition In 2007, Nanjing Yangtze River Third Bridge won the Science and Technology Award (Special Award) of China Highway Society. In July, 2007, the Third Nanjing Yangtze River Bridge won the annual award of the 24th International Bridge Conference (IBC)-"Gustav Lin Deen", which was awarded to the Chinese bridge engineering community for the first time since its establishment. In March, 2008, the Third Nanjing Yangtze River Bridge won the Seventh China Civil Engineering Zhan Tianyou Award. In 2009, the Third Nanjing Yangtze River Bridge won the 2009 China National Quality Engineering Award. The third Nanjing Yangtze River Bridge is one of the five strategic river-crossing channels to be built in Jiangsu Province on 20 10. It is a pilot project of "enriching the people and strengthening the city, taking the lead in basically realizing modernization" in Nanjing, and it is also an important river-crossing project to implement the development strategy along the Yangtze River. The completion of the third Nanjing Yangtze River Bridge will improve the traffic pattern in the eastern part of China, promote the development of Nanjing South and North New Districts, echo the development strategy along the Yangtze River, promote the development of Nanjing metropolitan area and the integration of the Yangtze River Delta, form the traffic pattern of Nanjing outer ring, solve the transit traffic problem in Nanjing, form the Nanjing inner ring expressway with Nanjing Second Yangtze River Bridge, Ring Road, Puzhu Highway and Liu Ning Highway, and form the Nanjing outer ring expressway with Ninghuai Expressway, Ring Expressway and Nanjing Fourth Yangtze River Bridge. Integrate Nanjing-Shanghai Expressway, Ninghe Expressway, Tong Ning Expressway, Nanjing-Hangzhou Expressway, Ninghuai Expressway, Ningbang Expressway and Ningma Expressway. At the same time, it will also improve the investment environment in Nanjing and its surrounding areas, further enhance Nanjing's transportation location advantages, give full play to Nanjing's position and role as a central city in the middle and lower reaches of the Yangtze River, and greatly promote the pace of urbanization in Nanjing. At the same time, echoing the development strategy along the Yangtze River will play a vital role in promoting the prosperity of Nanjing metropolitan area and the integration of the Yangtze River Delta. (Comment by Sina News, People's Daily Online and China News Network) The Technical Significance of the Third Nanjing Yangtze River Bridge Before the completion of the Third Nanjing Yangtze River Bridge, there were no steel tower bridges in China, and 80% of the steel tower bridges in the world were concentrated in Japan. Steel tower bridge can shorten the construction period, reduce the dead weight of the bridge, improve the seismic performance of the structure and increase the safety of the structure. Nanjing Yangtze River Third Bridge not only retains the construction experience for the history of Chinese bridges, but also improves the new level of Chinese bridge construction equipment by using its equipment. In order to ensure the installation of the steel tower crane of the Third Bridge, the Third Bridge Construction Command specially invited the French company Botan, which produces tower cranes, to build two super-large tower cranes for the Nanjing Yangtze River Third Bridge, with a tower height of 252 meters, which is the highest in the world. This hanging tower, which participated in the construction of the third Nanjing Yangtze River Bridge, was later used by Sutong Bridge, greatly reducing the construction difficulty of the 300-meter-high tower of Sutong Bridge. In addition, the foundation construction of the third Nanjing Yangtze River Bridge was completed in a dry season of the Yangtze River, setting a new record of the deepest water level and the shortest construction period of the underwater foundation construction of the Yangtze River. (Sina News Review) Economic Significance The construction of Nanjing Yangtze River Third Bridge didn't cost * * * a penny, and it was the first major infrastructure project in Jiangsu Province to realize * * * "0" investment. This is consistent with the goal of "financing new achievements" put forward by Nanjing Yangtze River Third Bridge in the early stage of construction. Nanjing Yangtze River Third Bridge has a total investment of 3.09 billion yuan, and its construction coincides with the rapid development of Nanjing's urban construction, so it adopts a new market operation mode of increasing capital and shares. In 2004, after Nanjing Third Yangtze River Bridge successfully completed the capital increase and share expansion, Nanjing Third Yangtze River Bridge Co., Ltd., a joint-stock company, was established in accordance with the modern enterprise system to raise funds for bridge construction in a market-oriented way. Nanjing Yangtze River Third Bridge Construction Headquarters is specifically responsible for the project construction. In 2007, it was handed over to the joint-stock company for management and returned to Nanjing after the prescribed charging period. After the capital increase and share expansion of Nanjing Yangtze River Third Bridge, the original registered capital of * * was returned to * *, which truly realized the "0" investment of * *. (Huaxia Jingwei Network Review)