Knowledge

In electrified railways, traction return current cannot flow completely through the return line, and some current leaks into the track, ballast bed, a

Ballastless track consists of multiple layers including rails, fasteners, track slabs, and base plates. The interfaces between these layers should be

Heat treatment is a core manufacturing process that determines the strength, toughness, and fatigue life of spring clips. Improper control of processe

When a train passes through a curve, centrifugal force is converted into a huge lateral wheel-rail force, causing an overturning moment around the out

Polyurethane rail pads are widely used in vibration reduction sections of rail transit due to their high elasticity, high damping, and aging resistanc

Pre-embedded sleeves are the core connecting components between the fastening system and the concrete sleepers. Their bonding and anchoring performanc

Under high-speed, high-density train operation conditions, the contact surface between the rail and the elastic rail clip experiences minute-amplitude

Rails may overturn or tilt under conditions such as curves, impacts, and defects. The fastener system must provide sufficient lateral restraint to sup

Inconsistent torque magnitude and tightness during on-site construction can cause drastic changes in fastener stiffness over short distances, creating

In high-altitude and low-temperature environments, materials such as elastic clips, bolts, and gauge blocks are prone to decreased toughness and incre

The bridge beam expands and contracts with temperature, and the relative displacement between the rail and the bridge near the beam end is significant

The gap between the elastic rail and the gauge block directly affects the rail positioning accuracy. An excessively large gap will cause gauge fluctua