Φ300/Φ350 ring-shaped etc.diameterprestressed concretemast
TB/T 2286 ring-shapedcross-section etc. straightdiameter
Specifications
| Model | Φ300/Φ350 |
|---|---|
| Standard | TB/T 2286-2020 (prestressed concrete poles for electrified railway OCS) |
| Operating Temperature | -40℃~+70℃ |
| Altitude | <4000m |
| Materials | Q235B/Q355Bsteel with hot-dip galvanizing, prestressed concrete, aluminium alloy (emergency repair) |
| Installation | direct burial/flange foundation installation, whole-mast erection |
Ring-shaped equal-diameter prestressed concrete poles use a constant-diameter circular section; they cost less and insulate well, widely used on conventional-speed railway OCS.Produced to the TB/T 2286 series industry standard with concrete strength class at least C50; models are usually given directly by diameter and length, e.g. Φ300, Φ350 etc..
| Common specifications | Φ300, Φ350 etc. (given by diameter and length) |
| Standard | TB/T 2286 series |
| Structure type | ring-shaped equal-diameter (circular section, constant diameter) |
| Concrete strength | at least C50 |
| Foundation type | cup or flange foundation |
| Scope of application | supports of conventional-speed railway OCS |
Performance
Operating Conditions
for sections, station OCS support structures, bearing suspension load, wind load and ice load.
Mechanical Performance
Standard test bending moments meet the TB/T 2286 class series; hot-dip galvanizing lasts at least 30 years and concrete pole crack resistance is type-tested.
Electrical Performance
with earthing terminal, meeting mast earthing and stray-current protection requirements.
Applications
ring-shaped equal-diameter prestressed concrete poles on mainline sections Φ300/Φ350 are arranged by span and load on mainline sections.
Station throat areas:
ring-shaped etc.diameterprestressed concretemast Φ300/Φ350 work with head-span beams in multi-track station areas.
Emergency repair:
ring-shaped etc.diameterprestressed concretemast Φ300/Φ350 restore power supply quickly after storm-pole failures.
Corrosive environments:
ring-shaped etc.diameterprestressed concretemast Φ300/Φ350 use thickened hot-dip galvanizing in coastal corrosive environments.
