Construction Method and Process Optimization of Prestress Reverse Tensioning for Large-Span Bidirectional Suspension Steel Roof Structures
Table 1
Construction process diagram.
Step
Construction activities
Schematic diagram
First step
Installation of the main truss and roof steel structure (both in a disconnected state), with the installation of pulling cables on the main truss (the main truss and roof steel structure are in a disconnected state)
Second step
Using the pulling cables to gradually tension the main truss to the specified value and then connecting the roof steel structure to both sides of the main truss
Third step
Removing the pulling cables, causing the main truss to rebound, which in turn lifts the roof steel structure upward. During this rebound process, the roof steel structure gains prestress