Complete set of technology for rapid rail laying in urban subway
Urban rail is quickly paved, efficient and precise, green, energy-saving, innovative and labor-saving.
Type
Tags
Solution maturity
Mass promotion / Mass production
Applicable industry
Applications
Key innovations
This innovative product has independently developed special equipment such as rapid span variable track laying machines and dual-purpose rail welding cars for highways and railways, and integrates technologies such as precise rail allocation and induction normalizing to greatly improve the efficiency and accuracy of urban rail laying and fill technical gaps. Its high mechanization and automation level significantly reduces labor intensity and employment, and achieves rapid construction.
Potential economic benefits
Improve work efficiency, reduce costs, save manpower, reduce labor, increase mechanization rate, achieve energy conservation and environmental protection, speed up progress, reduce safety risks, and achieve significant economic benefits.
Potential climate benefits
Special equipment reduces fuel consumption, induction normalizing reduces carbon emissions, and template recycling reduces carbon emissions in material production. Efficient construction shortens the construction period and further reduces overall energy consumption and emissions.
Solution supplier
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Shanghai civil engineering group
China Railway Shanghai Engineering Bureau Group Co., Ltd. is a large-scale state-owned comprehensive construction enterprise specializing in undertaking railway, highway, municipal and other infrastructure projects.
Shanghai，China
Solution details
- The scientific and technological field of the project: This project belongs to the field of architectural science and technology.
- Main technological innovation content, characteristics and application recommendations
(1) Through research and analysis of urban track structure and environmental characteristics, track laying equipment and technical status quo, we have independently developed equipment such as rapid variable span track laying machines, dual-purpose track welding vehicles for highways and railways, and mobile mixer trucks for track bed construction. Tools such as track row hangers, track adjustment brackets, and track bottom slope inspection ruler have solved technical problems that affect key aspects of track laying progress, improved track laying efficiency on single working surface, and achieved rapid track laying, which is innovative.
(2) Research and development and application of technologies such as precise rail allocation, rail bottom slope measurement and control, contact rail bracket installation surface detection, approximate adjustment adjustment of track control base points, open-closed coil induction normalizing, etc., have improved track accuracy, ensured project quality, and filled The technical gap in the industry.
(3) Through the use of self-made equipment such as rapidly variable span track laying machines, labor intensity is reduced and the process is simplified. The comprehensive average daily track laying progress of a single working surface reaches 125 meters.
(4) Apply special equipment and have a high degree of mechanization. Special equipment such as mobile mixer trucks for track bed construction, dual-purpose rail welding construction vehicles for highways and railways, and rapid station-crossing and variable-span track laying machines have improved the degree of construction mechanization, reduced the amount of labor, reduced the labor intensity of workers, and improved the daily track laying progress indicators on a single working surface.
(5) The quality of application special instruments and technical engineering is stable. Rail bottom slope measurement and control rules, track row integral reinforcement and locking devices and plastic templates, induction normalizing, floating plate reinforcement cage track row prefabrication technology have improved the working environment and construction technology, innovated measurement and control methods, and the process quality is stable, safe and reliable.
(6) Energy conservation and environmental protection, and reduce costs. The application of special equipment reduces fuel consumption, induction normalizing reduces carbon emissions, and templates are recycled to save energy and environmental protection.
(7) Compared with traditional construction methods, urban subway rapid laying construction greatly reduces the utilization of human resources, fully improves the utilization of machinery, saves a large amount of labor resources. Compared with traditional construction, urban subway rapid track laying construction can increase the daily progress by 1~2 times, significant efficiency.
(8) Mobile mixing for subway track bed construction realizes long-distance concrete transportation in the tunnel, ensures concrete quality, reduces concrete distribution points at stations along the line, and provides support for station structural safety and waterproofing. The floating slab construction technology with prefabricated track rows and cage method increases the daily progress of traditional technology from 20 meters to 50 meters, saving labor by 41%. The integral reinforcement and locking device of the reinforcing cage track slab effectively controls the deformation of the track slab during the hoisting and connection process, stabilizes the quality of the track slab, and reduces the adjustment workload.
(9) The rapid transfer technology of dual-purpose rail welding vehicle for highways and railways can not only drive on highways, which is convenient for construction transfer, entry and exit, but also convenient for running on rails and tracks, which facilitates the movement of the construction work surface. The transfer can be completed within one day., only 9 meters of track are occupied during operation, which will not cause bowing and ensure the flatness and quality of the joints.
(10) The asymmetric open-close water-cooled induction coil induction normalizing single working face is staffed with 6 people, which is 2 fewer than the 8 people working under open fire. 50 heads are normalized per day, eliminating potential safety hazards of oxygen and acetylene.
(11) The variable span track laying machine adapts to multiple gauges of 1435 - 3800 mm, takes into account multiple working conditions, and realizes a single span change in 2 hours and 6 hours to complete the station crossing. It can transfer the working surface by itself under traction without disassembling 4 The whole vehicle is shipped and transferred quickly. Operation and transfer reduce the labor intensity of workers.
Last updated
12:08:11, Nov 04, 2025
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