China News Service, Shenyang, September 30 (Wang Xitong) The soft foundation treatment and aeolian sand roadbed widening test section of the reconstruction and expansion project of the Panjin-Shenyang section of the Beijing-Harbin Expressway started on September 30, marking the official launch of the reconstruction and expansion project of the Panjin-Shenyang section of the Beijing-Harbin Expressway.
The Beijing-Harbin Expressway Panjin-Shenyang section reconstruction and expansion project starts from the Panjin hub interchange and ends at the Shenyang West Toll Station, passing through Panshan County of Panjin City, Taian County of Anshan City, Liaozhong District, Tiexi District, Xinmin City and Yuhong District of Shenyang City, with a total length of 129.52 kilometers and an estimated investment of 13.9 billion yuan. After the completion of the project, it will further improve the traffic efficiency and service level of the Beijing-Harbin Corridor, relieve traffic pressure on existing roads, strengthen the connection between Shenyang and cities along the route, reduce logistics costs, and promote the development of industries and tourism along the route. It is of great significance to the implementation of the national strategy for comprehensive revitalization of Northeast China and supporting the construction of Shenyang's modern metropolitan area.
The test section launched this time covers two types: aeolian sand subgrade test road and soft foundation treatment test road, aiming to provide key technical support for the subsequent design and construction of the entire line. About 99 kilometers of the entire Shenpan Expressway are filled with wind-blown sand. The stability of the Zhongyuan roadbed during reconstruction and expansion, and the difference in settlement between the old and new roadbeds are directly related to the safety of Baotong operations and the quality of the project.
The construction of the test section focuses on five major goals: first, to verify the feasibility of the in-situ curing process of the widened roadbed, and to solve common problems such as settlement difference, cracking, and slippage when the old and new roadbeds are spliced; secondly, to test the adaptability of various equipment and determine standardized construction parameters; thirdly, to optimize the mechanical combination, process and personnel allocation, to identify construction hazards, and to unify the entire process and quality standards; fourthly, to verify the detection indicators and establish acceptance standards suitable for this project to ensure the integrity and stability of the new and old roadbeds. The fifth is to verify the effectiveness of environmental protection prevention and control measures such as construction dust and noise, and further improve the scientificity, accuracy and practicality of environmental impact assessment reports. The construction period of the test section is from September 30, 2026 to May 31, 2027.
According to reports, this project is a widening construction of wind-sand sand roadbed under the condition of ensuring traffic. On the premise that the existing road can be used normally, the traffic diversion and construction procedures are scientifically organized, and measures such as slowing down the slope rate, setting up inclined steps, and sealing the slope with cement mortar are adopted to ensure the stability of the old roadside slope and achieve "opening to traffic and expansion at the same time."
At the same time, Liaoning Province applied shallow soft foundation in-situ solidification technology for the first time, taking the lead in introducing in-situ solidification technology in highway construction in the province, solidifying the soil layer in-situ, significantly improving the bearing capacity and stability of the foundation; avoiding traditional excavation and filling, reducing material transportation and environmental pollution, the construction speed is fast, the cost is controllable, and it is green and environmentally friendly.
The entire process of soft foundation treatment is intelligently managed, and an intelligent management system is fully introduced. Relying on the Internet of Things sensing equipment, real-time monitoring, data collection and intelligent analysis of the entire soft foundation treatment process are used to dynamically grasp the quality, progress, and safety status, and achieve the refined management goals of "visibility, traceability, and controllability".
Shi Jian, director of the Highway Department of the Liaoning Provincial Department of Transportation, said that the Beijing-Harbin Expressway is one of the seven capital radials in the "National Highway Network Plan" and is the main artery of transportation in the Northeast and an important passage for entry and exit.
