What is a glued joint in a railway?

A glued joint, or glued insulated rail joint (GIJ), is a high-strength, electrically insulated rail connection used in modern, heavy-duty, and high-speed railways. It permanently bonds rail ends using special, insulating epoxy adhesives and high-strength bolts, creating a rigid connection that prevents electrical current from passing between rail sections.

• Purpose: Primarily designed for track circuits on welded rails (LWR/CWR) to manage electrical signals and withstand high longitudinal forces.

• Components: Consists of insulation material (glass fiber-reinforced epoxy), insulated fish plates (joint bars), bolts, nuts, and adhesive.

• Types: Manufactured as either "factory-made" (high-strength, superior quality) or "on-site cold setting" (convenient for repair).

• Automatic Signaling: Crucial in signaling sections to divide track circuits.

• Continuous Welded Rails (CWR): Applied in long, welded tracks to maintain insulation.

• High-Traffic Areas/Turnouts: Installed in points and crossings to withstand high-speed and heavy traffic.

• Specific Structures: Used in bridges, steel sleepers, and expansion joints.

Get GIJ Technical Support

GNEE RAILWAY RAILWAY supplies glued insulated rail joints (GIJs) and related insulated rail joint components for different rail profiles and track applications. We provide customized specifications, including rail joint bars, insulation materials, bolts, and adhesives, according to project requirements.

Glued insulated rail joints offer superior structural strength, enhanced electrical insulation reliability, and reduced maintenance needs compared to traditional joints, making them ideal for high-speed, heavy-haul, and Continuously Welded Rail (CWR) tracks. By securely bonding rail ends and fasteners, they minimize wheel impact, noise, and the risk of insulation failure.

• High Strength and Stability: They provide a stronger connection, often withstanding high tensile and vertical loads better than mechanical joints.

• Improved Electrical Insulation: They ensure reliable separation of track circuits, which is critical for modern signaling systems.

• Reduced Maintenance: The bonded structure lowers the need for frequent bolt tightening or component replacement.

• Suitability for CWR: They are designed to withstand the high thermal stresses in long welded rails.

• Enhanced Ride Quality: By reducing the gap between rails, they minimize noise and vibrations, providing smoother transit for trains.

• Longer Service Life: Their resistance to corrosion and wear extends their service life, offering a better long-term return on investment.

Request a Quote for Rail Joint Bars

GNEE RAILWAY RAILWAY is a manufacturer and supplier of railway components, specializing in rail fish plates (joint bars/splice bars) and related rail joint products.

Our fish plates are available for UIC, AREMA, BS, DIN, and GB rail standards, covering light rail, heavy rail, and crane rail applications. Products include standard, insulated, bulged, and compromise fish plates, with 4-hole and 6-hole configurations available.We provide customized production, quality inspection, packaging, and technical support according to project requirements.