SURVEYS, TESTS AND MONITORING IN CONSTRUCTION_P2

Monitoring and control systems in monuments

 

MONITORING SYSTEM TO CONTROL THE DISARTICULATION OF THE OBELISK OF AXUM– ROME

figure 1. View of the structure prior to the first disarticulation step
figure 2. View of the structure during the second disarticulation step
figure 3. Structure ready to be cut at the bottom with a diamond wire
figure 4. Set of manifolds complete with manometers and pressure transducers used to control the loads applied to each jack
figure 5. Oleodynamic jack provided with safety device and displacement transducers to control deformation
figure 6. Servo-accelerometric tilt sensors to control the inclination of the obelisk during disarticulation  operations
figure 7. Strain gauges used for the automatic control of the forces induced on dywidag tie rods for  transverse precompression
figure 8. Detail of the displacement transducers installed at the location of the joint that will be disarticulated, on the metallic structure and on the obelisk stone, respectively
figure 9. Application of transverse load by means of 500 KN oleodynamic jacks located at opposite corners of the obelisk

DYNAMIC MONITORING SYSTEMS DURING AIR TRANSPORT OF AXUM OBELISK – ROME

figure 10. Loading operations of bottom ashlar into Antonov 124-100 aircraft
figure 11. Lifting and loading operations of the middle portion of the obelisk
figure 12. Middle portion of the obelisk in the cargo area
figure 13. Detail of strain gauges used to control the longitudinal tension of dywidag tie rods
figure 14. Three-axial accelerometers used to control the acceleration strains acting on the obelisk during landing and take-off.

[by Alessandro Bozzetti and Cristiano Russo]

      

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