• Indian Railways

    Reality modeling facilitates efficient planning, construction, and monitoring of Chenab Bridge

    Reasi District, Jammu and Kashmir, India

Project Summary


Project
Amid rugged and mountainous terrain in a highly active seismic zone, the Chenab Bridge is an under-construction rail bridge located between Bakkal and Kauri in the Reasi district of Jammu and Kashmir, India. Indian Railways’ USD 184 million bridge project will be the world’s highest rail arch bridge at 359 meters above the riverbed with an arch span of 467 meters. Being constructed for a dual carriageway with an overall length of 1,315 meters, the project presented numerous geological and alignment challenges that would affect design and constructability.

Solution
Indian Railways developed a reality model using unmanned aerial vehicles (UAVs), providing checks on construction in complex terrain, better planning for project resources, and identifying potential issues. The organization used the reality model for many locations that were difficult to inspect with traditional methods. The 3D reality mesh allowed the organization to manage the site progress and conduct construction inspections, speeding up the process and offering higher quality and more repeatable inspection documentation. Indian Railways could also superimpose the construction alignment drawings with the reality models.

Outcome
By using drones and reality modeling to survey the project site, Indian Railways saved 225 resource days, saving USD 40,000. The UAVs and reality meshes identified potential issues, managed site process, and conducted construction inspections safely and efficiently. These strategies also reduced construction inspection time by 80 percent to save more than USD 100,000. The Chenab Bridge will improve connectivity in the state of Jammu and Kashmir, benefitting the economy and providing growth opportunities to the citizens and the tourism industry. Indian Railways’ reality model will also be part of the bridge asset information system for future projects at the site.

Software
ContextCapture helped with construction planning, monitoring, and interim surveys and inspections. OpenRail Designer was used to help the team transition the bridge rail alignment from straight to curved. RM and STAAD helped with the structural behavior and analysis during the planning stages.

Project Playbook: ContextCapture, OpenBridge, OpenRail Designer, OpenRoads, RM Bridge, STAAD
Outcome/Facts
  • Indian Railways’ USD 184 million bridge will be the world’s highest rail arch bridge, at 359 meters above the riverbed with an arch span of 467 meters.
  • By using drones and reality modeling to survey the project site, Indian Railways saved 225 resource days, saving USD 40,000.
  • Bentley applications also helped reduce construction inspection time by 80 percent to save more than USD 100,000.
Quote:
  • “Bentley’s ContextCapture solution empowered our project teams to efficiently and effectively carry out construction monitoring, ensuring visibility, safety, and adherence to delivery schedules.”

    B.P. Awasthi Executive Director – Track (P) Indian Railways