Ccv

1. Adaptive Design in Bridge
Construction: A Study on Chenab
Bridge
• Presented by: [Your Name]
• Institution/Department
• Date

2. Introduction
• - Adaptive design: Modification of engineering
solutions to site-specific constraints.
• - Essential for projects with complex geological
and climatic conditions.
• - Chenab Bridge is a prime example due to
extreme terrain and structural challenges.

3. About the Chenab Bridge
• - Location: Reasi district, Jammu & Kashmir
• - Crosses: Chenab River
• - Part of: USBRL (Udhampur–Srinagar–
Baramulla Rail Link)
• - World's highest railway bridge
• - Height: 359 m | Main Arch Span: 467 m

4. Need for Adaptive Design
• - Terrain: Steep slopes and deep gorges
• - High seismic activity
• - Wind speeds: Up to 266 km/h
• - Temperature variation: -20°C to +45°C
• - Accessibility challenges

5. Structural Design Features
• - Steel arch with concrete-filled box sections
• - Orthotropic steel deck for load distribution
• - Designed for seismic and wind resistance
• - Wind tunnel testing and advanced FEM
analysis

6. Materials and Construction
Techniques
• - High-strength weathering steel
• - Incremental launching of deck segments
• - Use of cable cranes for arch erection
• - Modular and prefabricated components

7. Safety and Monitoring Systems
• - Real-time structural health monitoring (SHM)
• - Sensors for wind, temperature, vibration
• - Redundant safety mechanisms
• - Maintenance-friendly design

8. Sustainability Considerations
• - Environmental protection in a fragile
ecosystem
• - Minimal on-site construction footprint
• - Corrosion-resistant materials reduce
maintenance

9. Challenges Faced
• - Unstable geology
• - Harsh weather conditions
• - Logistic constraints due to remote location
• - Coordination during COVID-19 pandemic

10. Conclusion
• - Chenab Bridge demonstrates excellence in
adaptive design
• - A landmark in Indian infrastructure and
global bridge engineering
• - Sets a precedent for future high-altitude and
seismic-resistant bridge projects

11. Thank You
• Questions & Discussion

12. What is Adaptive Design?
• - Adaptive design involves tailoring
engineering practices to unique site
conditions.
• - Accounts for variables like terrain, climate,
seismic activity, and construction feasibility.
• - Enhances safety, durability, and efficiency in
construction.

13. Adaptive Design in Chenab Bridge:
Key Aspects
• - **Topographical Adaptation**: Designed to
span across a deep gorge.
• - **Geotechnical Solutions**: Foundations
placed on complex and fractured rock strata.
• - **Climate Resilience**: Materials selected to
endure high thermal gradients and UV
exposure.

14. Wind and Seismic Adaptation
• - Designed to withstand wind speeds up to
266 km/h.
• - Aerodynamic stability verified through wind
tunnel tests.
• - Built in Seismic Zone IV: Designed with
ductile detailing and base isolation concepts.

15. Construction Phase Adaptability
• - Adaptive use of construction methods based
on real-time site conditions.
• - Modular erection strategies using cable
cranes and derricks.
• - Adjusted work schedules for weather and
access constraints.

16. Adaptive Maintenance Strategies
• - Integrated Structural Health Monitoring
System (SHMS).
• - Predictive maintenance enabled through
sensor data.
• - Accessibility built into design for long-term
inspections and repairs.