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  • CML3 CAIRO METRO

    EGYPT (LG36-S) 2019-ON GOING

CML3 Cairo Metro Line 3 Extension

EGYPT (LG36-S) 2019-...

Location
Cairo, Egypt
Year
2019-...
Project
Type: Viaduct, total length 5000 m (16404 ft.)
Typical Span: 33 m (108 ft.)
Deck width: 9 m (30 ft.)
Typical Cross Section: Box
Equipment features
Model: LG36-S
Construction Type: Precast segments, span by span; simply supported spans
Type: Overhead LG
OPS System: N/A
Performance: Less than 3-day cycles
Challenges
• Construction equipment reliability and performance
• Viaduct with significant inclinations ±4% and tight curvature radius until 200 m (656 ft.)
• Different span length, from 14 to 36 m (46 to 118 ft.)
• City viaduct with high construction density (roads and buildings) with significant dimensional & kinematic restrictions that conditioned the equipment design
• Equipment center of gravity differs in kinematic phases
• Safe access to work and maintenance areas without the need of external means
Solutions
• Robust design & fabrication, extensive validation tests
• Autonomy:
- Locomotion of whole overhead crane
- Autonomous support transport & assembly
• Security:
- Implementation of a command & control system (all movable parts of the equipment interact in order to ensure high level of operations security)
- Implementation of a monitoring system that allows: status & load position of the different elements of the equipment monitoring; compliance and sequence of the real and defined theoretical operation check, span by span; Historical record of: operation validations, position data, loads & status of the equipment elements
Results
• WORK IN PROGRESS
  
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