The construction of the Yangtze River Bridge between Qidong, Jiangsu and Chongming, Shanghai has made phased progress. Nanjing | Yangtze River Bridge | Chongming
1. Progress has been made in the construction of the Yangtze River Bridge from Qidong, Jiangsu to Chongming, Shanghai.
In the early morning of the 29th, at the construction site of the No. 4 main pier of the Chongqi Highway and Railway Yangtze River Bridge in the north branch of the Yangtze River, the last truck of concrete was poured into the pile hole, marking the completion of 76 pile foundations in the north main tower of the Chongqi Highway and Railway Yangtze River Bridge on the Shanghai-Nanjing-Hefei high-speed railway. Phased progress has been made in the construction of the main project of the bridge.
The Chongqi Railway Yangtze River Bridge is a control node project of the Shanghai Nanjing Hefei high-speed railway, with a total length of 4.09 kilometers, spanning the northern branch of the Yangtze River estuary. Its structure is a double deck highway railway bridge. The upper layer is a two-way six lane first-class highway with a speed of 100 km/h, and the lower layer is a double track high-speed railway with a speed of 350 km/h+a double track intercity railway with a speed of 250 km/h. The bridge is divided into main navigable span bridge, non navigable span bridge, north-south bank road and railway joint approach bridge, and north-south bank single railway approach bridge; The main navigation span bridge is a 400 meter double tower double cable surface steel truss composite beam cable-stayed bridge, which is the world's largest under construction double tower double cable surface ballastless track cable-stayed bridge. Among them, Pier 3 and Pier 4 are the south and north main tower foundations, respectively. The main navigation span of the Chongqi Gongtie Yangtze River Bridge adopts a new structure of main truss+auxiliary truss steel-concrete composite beam, and the highway bridge deck adopts concrete composite slab bridge deck. It is the world's first highway concrete slab participating in the first system of fully steel truss composite beam cable-stayed bridge under stress.
The Shanghai to Nanjing to Hefei high-speed railway is an important part of the eastern section of the Shanghai Chongqing Chengdu high-speed railway and the national "eight vertical and eight horizontal" high-speed railway network along the Yangtze River high-speed railway channel. It undertakes the transportation of the main passenger flow along the Yangtze River channel network, as well as the direct passenger flow from coastal and Beijing Shanghai channels to Shanghai.
2, Ningbo will start the city physical examination
According to the plan, Ningbo requires to carry out the pilot work of urban physical examination from June to August 2023. Through the physical examination, we will comprehensively find out the weaknesses in housing use, facilities, neighborhood renewal, complete community construction and urban development, and form a problem account at all levels. The urban physical examination includes 61 basic indicators and 22 characteristic indicators, of which 61 basic indicators are divided into 4 dimensions: housing, community, neighborhood and urban area. In each of the four dimensions, multiple metrics are set. For example, in the housing dimension, indicators such as housing safety, pipelines, water quality at home, and digital homes are set in terms of safety and durability, perfect functions, and green intelligence; in the residential dimension, indicators such as old-age care, childcare, parking, and charging are set in terms of perfect facilities, livable environment, and sound management. It can be said that it covers all aspects of urban renewal and transformation that residents are concerned about. Ningbo will achieve full coverage of district-level physical examination this year, as well as urban physical examination covering 24 streets and 20 renewal areas, and complete the corresponding urban renewal area planning scheme simultaneously, so as to effectively achieve "urban renewal, physical examination first". By 2025, full coverage of street-level physical examinations will be achieved.
3, Nanjing Shangyuanmen Railway cross-river channel started.
On June 30, the Jiangsu Provincial Government held a mobilization meeting for the start of the Shangyuanmen Railway Crossing Channel in Nanjing, marking the full start of the construction of the Nanjing Shangyuanmen Railway Crossing Channel Project, an important node project of the Yangtze River Delta regional railway network. The Nanjing Shangyuanmen Railway Crossing Channel is one of the 44 crossing channels in Jiangsu Province in the "Yangtze River Trunk Line Crossing Channel Layout Plan", and it is also the main channel connecting Nanjing North Station and Nanjing Station in the "Nanjing Railway Hub Master Plan". It will undertake the important task of a large number of high-speed rail crossing the river, break through the bottleneck of the railway crossing in the Nanjing hub, and effectively realize the "three major passenger stations" pattern of Nanjing, Nanjing; accelerate the formation of a 1.5-hour high-speed rail transportation circle from Jiangsu's districts and cities to Nanjing, and further enhance Nanjing's hub function and hub economic competitiveness as the capital of Jiangsu Province, the core city of the Nanjing metropolitan area, and the gateway city of the Pan-Yangtze River Delta.
The new main line of the project is about 20.4 kilometers long, with a total investment of about 29.2 billion yuan and a construction period of 6 years. Among them, the length of the cross river tunnel is about 14 kilometers, and its geological conditions are complex. It is the longest underwater shield tunnel in terms of rock excavation distance at home and abroad.
