preliminary design is a very important link in the construction of highway projects. Generally speaking, as long as the project enters the preliminary design stage, the detailed direction of the route and construction scale can be basically determined. After the preliminary design is completed and approved, the project can start designing the construction drawings, and of course, in most cases, it will be carried out simultaneously with the preliminary design work. If the construction of a highway project reaches this point, it means that the project is about to start.
Insiders or enthusiasts who often pay attention to highway construction should know that there is a lot of content in the preliminary design stage of each project, including fixed geodetic survey, preliminary design pre-examination/review, etc. In addition, a lot of content is also included in the preliminary design approval pre-procedures, such as land reclamation, flood control, environmental impact assessment, soil and water conservation reports, and also involves the "three electricity" and pipeline relocation. The preliminary design of the
project is the basis for the preparation of construction drawing design. At the same time, the problems raised during the preliminary design review and the problems left over from the preliminary design will be corrected and improved in the construction drawing design. So in many cases, after completes the preliminary design-related work, the next step is to design the construction drawings.
The four expressways introduced to you today are related to design approval. Two are the preliminary design of the project and the two are the project construction drawing design approved. Let’s take a look at their overview and progress:
Nanjing to Yancheng Expressway: Project route starts from Xinhuangbei, Liuhe District, Nanjing, connects to the already built Nanjing Raoyue Expressway and ends in Diduo, Xinghua City. connects to the proposed expanded Yanjing Expressway and the proposed built Dongxing Expressway . The total length of the route is 126.589 kilometers. The construction is based on the standard of two-way six-lane expressway, with a design speed of 120 km/h, and the approved preliminary design estimate is 30.154 billion yuan.
Puyi Expressway Highway is the pilot section of Ningyan Expressway ( Nanjing to Yancheng ). The pilot section project has been included in the "2022 Jiangsu Province Major Project List" and has also been included in the three-year rolling promotion plan for the preliminary work of key transportation projects in Jiangsu Province from 2022 to 2024, becoming one of the 57 projects planned and strived to start construction in 2022.
At present, the project has completed the work of approval, flood control evaluation, preliminary design, and submission of the red line diagram of the pre-order land use. Next project will enter the final construction drawing design and land use document approval stage. This line is planned to start construction in June 2022, and will be fully started in 2023.
Yizheng to Lukou Airport Expressway Shanghai-Shaanxi Expressway to North Yangtze River Dike Section: The route of this project starts from the north side of Tongshan Hub at the intersection with Shanghai-Shaanxi Expressway , ends at the North Yangtze River Dike, and connects to the Longtan Yangtze River Bridge under Jianjian. The total length of the route is 12.372 kilometers. The entire line adopts the standard construction of two-way six-lane expressways, and different sections of the road adopt different design speeds. Among them, the design speed of the Shanghai-Shaanxi Expressway to National Highway 328 is 120 km/h; the design speed of the National Highway 328 to the North Yangtze River embankment section is 100 km/h. The preliminary design estimate was approved to be 6.985 billion yuan.
This project is an important part of the "Jiangsu Province Expressway Network Planning (2017-2035)". In February 2022, the Jiangsu Development and Reform Commission approved the preliminary design of the Shanghai-Shaanxi Expressway section of the Yangtze River North Embankment. At this point, the project has taken an important step towards the start of construction.
Tongzi to Xinpu Expressway: The main line of the project starts from Jinjiagang in the southwest of Tongzi County, and follows the proposed Jinsha via Renhuai to Tongzi Expressway, ends at Lilong, Xinpu New District, and connects to the Meitan to Shiqian Expressway Airport Contact Line. The total length of the route is 73.141 kilometers. The main line of this project is built using the standard of two-way four-lane expressway with a design speed of 100 km/h.
days ago, the construction drawing design of the project (main project) was approved. The approved documents made detailed requirements for the project construction scale and technical standards, engineering geological survey , overall and route design, roadbed surface, bridge culverts, tunnels, route crossings, environmental protection and other related work. Construction is about to start, so stay tuned!
Wulong (Chongqing-Guizhou-Guizhou-Border) to Daozhen Expressway: This line starts from Zimuyan Tunnel at the Chongqing-Guizhou-Guizhou-Border, connects to the Chongqing section of the proposed Wulong-Daozhen Expressway, ends at Xiqiujiawan, Daozhen County, and connects to the completed Zhen to Weng'an Expressway. The total length of the route is 38.277 kilometers. There are three service-type interchange interchanges in Luolong, Hekou and Daozhendong. The main line is built using the standard of a two-way four-lane expressway with a designed speed of 80 km/h.
At the end of last month, the construction drawing design of the project (main project) was approved. The starting, ending and direction of the construction drawing design route of were in line with the preliminary design approval opinions. The design plan was generally economical and reasonable, and the location of structures such as bridges, tunnels, culverts, and channels were basically appropriate; the survey methods and means were reasonable, and the survey content and depth, roadbed construction drawing design content, etc. basically met the construction drawing design requirements. After the construction drawing design was approved, the project was getting closer and closer.
Warm reminder: The construction of the above expressway projects will be affected by many factors. Please refer to the start time or opening time mentioned in the article to be based on the actual time, and the relevant data mentioned should also be based on the final approved data.
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This article is original by @海机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机机
