Failures states of the cantilever device
| Component | Degree of failure | Fault state | Rationale |
|---|---|---|---|
| Flat/oblique cantilever | Normal | Bending | Pantograph failure and accident |
| Deviation | Carrier cable breakage | ||
| Severe | Fracture | Pantograph failure and accident | |
| Burn | Foreign object lap | ||
| Cantilever base | Normal | Bolt looseness | Accidents such as fatigue, poor material, corrosion, theft of nuts and threading nails, etc |
| Severe | Fracture | Design and installation defects and long-term fatigue | |
| Cantilever support | Normal | Damage | Accidents such as flying birds |
| Severe | Fracture | Pantograph injuries, etc |
| Component | Degree of failure | Fault state | Rationale |
|---|---|---|---|
| Flat/oblique cantilever | Normal | Bending | Pantograph failure and accident |
| Deviation | Carrier cable breakage | ||
| Severe | Fracture | Pantograph failure and accident | |
| Burn | Foreign object lap | ||
| Cantilever base | Normal | Bolt looseness | Accidents such as fatigue, poor material, corrosion, theft of nuts and threading nails, etc |
| Severe | Fracture | Design and installation defects and long-term fatigue | |
| Cantilever support | Normal | Damage | Accidents such as flying birds |
| Severe | Fracture | Pantograph injuries, etc |
Source(s): Authors’ own work