Views: 0 Author: Site Editor Publish Time: 2025-08-12 Origin: Site
As a professional company deeply engaged in the steel structure field, our company, leveraging our deep understanding of European standards and practical engineering experience, successfully undertook the European-standard steel structure project for the French metro project. Using high-precision European-standard profiles as the core material and relying on on-site bolt assembly as the key process, the project fully met the French metro's stringent requirements for structural safety, construction efficiency, and operational durability, providing a solid foundation for the upgrade and iteration of the local rail transit network.
In terms of material selection, our company strictly adheres to European standards, selecting high-quality structural steel profiles. These profiles not only offer stable and reliable mechanical properties such as yield strength and tensile strength, capable of withstanding the dynamic loads and vibration shocks experienced during subway operations, but their cross-sectional dimensional accuracy and straightness also provide a precise foundation for on-site assembly.
During on-site construction, our company innovatively adopted an all-bolt assembly process, completely eliminating traditional welding. The high-strength bolts used comply with the EN 14399 standard. Through a standardized "initial tightening - re-tightening - final tightening" process, coupled with precise preload control using a torque wrench, the shear and tensile strength of each connection node fully met the design standards. This process not only eliminated the fire risks and deformation associated with welding but also reduced the construction time per node to under 40 minutes, significantly improving construction efficiency within the confined space of the tunnel. This enabled the successful completion of key structural installation ahead of schedule within the French metro project's construction window.
From European standard compliance verification during the design phase to high-precision machining during production and standardized bolt assembly on site, our company successfully completed the steel structure engineering for the French metro project with comprehensive professional services. Going forward, our company will continue to focus on the needs of high-end international engineering projects, contributing its expertise in "Made in China" to more overseas rail transit projects through technological innovation and unwavering commitment to quality.
