International Symposium on Design and Construction of Steel and Composite Structures
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150121-PresentationInternational Symposium on Design and
Construction of Steel and Composite Structures
Project Team Details
Completely unstiffened circular hollow sections (CHS) using full penetration butt welds (FPBW)
Complex connections where upto 14 CHS elements meet at a single node
Design for static loads, moving loads, blast loads and fatigue conditions
Design Challenges Connection Design
Design Challenges Connection Design
Fabrication Challenges
Fabricating the largest dome roof in the world had to be a daunting task!!!
Fabrication Challenges
Thickest steel element: Thrust Block End Plates – 175 mm
Fabrication Challenges
Simple Node: 4 to 6 brace elements meeting the primary chord
Fabrication Challenges
Simple Node: 4 to 6 brace elements meeting the primary chord
Fabrication Challenges
Complex Node: 7 to 10 brace elements meeting the primary chord
Fabrication Challenges
Complex Node: 7 to 10 brace elements meeting the primary chord
Fabrication Challenges
The Most Complex Node: 14 brace elements meeting at one node
SNAPSHOT (ANALYTICAL MODEL)
Fabrication Challenges
The Most Complex Node: 14 brace elements meeting at one node
SNAPSHOT (TEKLA MODEL)
• Circular hollow sections required profile cutting at many different angles
• Full penetration butt welds (no bolted connections!)
Fabrication Challenges Welding details
Full penetration butt welds at profiled CHS sections. Thickness of CHS elements varied between 6 mm to 80 mm
Fabrication Challenges Welding details
Profile sections were cut using robotic arm in Yongnam’s Fabrication Yard
Fabrication Challenges Welding details
Some of the sections required profiling at very acute angles, which made butt welding at these locations even more challenging!!!
Fabrication Challenges Welding details
At longitudinal splice locations:
Delivery to site
Total components delivered
Total tonnage of the fixed roof was 7600 mt
Erection Challenges Temporary Support
Final Depropping – Total 8 locations across the runway trusses
Erection Challenges Site Welding
Approximately 5300 joints were welded on site using full penetration butt welds
Erection Challenges Fixed Roof
Total tonnage – 7600 mt (approx.) Total number of nodes – Close to 4300 nodes
Erection Challenges Movable Roof
Total tonnage – 1200 mt (approx.) Total number of nodes – Close to 2000 nodes
Erection Challenges Movable Roof – Erection Procedure
Erection Challenges Movable Roof - Erection
Erection of the movable roof
Erection Challenges Movable Roof - Erection
Erection of the movable roof
Erection Methodology
Project Team Details
Completely unstiffened circular hollow sections (CHS) using full penetration butt welds (FPBW)
Complex connections where upto 14 CHS elements meet at a single node
Design for static loads, moving loads, blast loads and fatigue conditions
Design Challenges Connection Design
Design Challenges Connection Design
Fabrication Challenges
Fabricating the largest dome roof in the world had to be a daunting task!!!
Fabrication Challenges
Thickest steel element: Thrust Block End Plates – 175 mm
Fabrication Challenges
Simple Node: 4 to 6 brace elements meeting the primary chord
Fabrication Challenges
Simple Node: 4 to 6 brace elements meeting the primary chord
Fabrication Challenges
Complex Node: 7 to 10 brace elements meeting the primary chord
Fabrication Challenges
Complex Node: 7 to 10 brace elements meeting the primary chord
Fabrication Challenges
The Most Complex Node: 14 brace elements meeting at one node
SNAPSHOT (ANALYTICAL MODEL)
Fabrication Challenges
The Most Complex Node: 14 brace elements meeting at one node
SNAPSHOT (TEKLA MODEL)
• Circular hollow sections required profile cutting at many different angles
• Full penetration butt welds (no bolted connections!)
Fabrication Challenges Welding details
Full penetration butt welds at profiled CHS sections. Thickness of CHS elements varied between 6 mm to 80 mm
Fabrication Challenges Welding details
Profile sections were cut using robotic arm in Yongnam’s Fabrication Yard
Fabrication Challenges Welding details
Some of the sections required profiling at very acute angles, which made butt welding at these locations even more challenging!!!
Fabrication Challenges Welding details
At longitudinal splice locations:
Delivery to site
Total components delivered
Total tonnage of the fixed roof was 7600 mt
Erection Challenges Temporary Support
Final Depropping – Total 8 locations across the runway trusses
Erection Challenges Site Welding
Approximately 5300 joints were welded on site using full penetration butt welds
Erection Challenges Fixed Roof
Total tonnage – 7600 mt (approx.) Total number of nodes – Close to 4300 nodes
Erection Challenges Movable Roof
Total tonnage – 1200 mt (approx.) Total number of nodes – Close to 2000 nodes
Erection Challenges Movable Roof – Erection Procedure
Erection Challenges Movable Roof - Erection
Erection of the movable roof
Erection Challenges Movable Roof - Erection
Erection of the movable roof
Erection Methodology
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