Prestressed precast segments span by span bridge construction technology, its principle is to bridge the upper structure is divided into several criteria section, after completion of the prefabrication site matches the settled at the scene with special assembly equipment at the bottom of the bridge structure, such as in order be put spellers, prestress at the same time, making it the whole structure, and along the scheduled installation direction to step forward, step installation.
The erection of precast prestressed concrete beams in a beam yard is called bridge erecting machine. The maximum span of the machine is 82 meters, the rated lifting weight of the single beam is 240 tons, and the maximum single hole beam is 3060 tons.
| Segmental Launching Gantry Crane | ||
| No. | Item | Data |
| 1 | Span of Erection | Min.50m/Max. 75m |
| 2 | Working Grade | A3 |
| 3 | Max. Longitudinal Gradient | Plus2.35% , Minus3.4% |
| 4 | Bridge Transverse Slope | ±2% |
| 5 | Min. Operating Curve Radius | 2500m |
| 6 | Max. Lifting Capacity (excluding spreader) | 150t |
| 7 | Adapt Segment Length | 3m,3.55m,1.8m |
| 8 | Segment Height/Width | 4.25m,20.8m |
| 9 | Max. Segment Weight (excluding spreader) | 130t |
| 10 | Max. Lateral Velocity/Surge Velocity | 0.5m/min , 0-1m/min |
| 11 | Wind Conditions | ≤16m/s |
| 12 | Sling Rotation | 360° |
| 13 | Adjust the Angle of Spreader Horizontally and Vertically | ±4%，±4%， |
| 14 | Max. Lateral Adjustment Distance of Crane | ±0.7m |
| 15 | Feeding Beam Method | Lift from the water |
| 16 | Power Supply | as requirements |
| 17 | Main Bean Qty / Length | 2/120m |
| 18 | Support Leg Qty | (Front) 1 , (Middle)2, (Back)1 |
| 19 | Auxiliary Support Leg Qty | 2 |
| 20 | Crane Qty | 2 |
| 21 | Overall Dimensions | L120M*W11.8M*H14M |
| 22 | Weight /Power | 680T,210KW |
| Note : Other Capacities , Pls Contact Us Freely . | ||
Main Technical details are needed for design .
The selection design shall provide the bridge design drawings , including the design of the lower pier structure, the upper beam and the site working environment, the main technical parameters to be specified as below:
1. Maximum section beam lifting weight.
2. Maximum hanging weight;
3. Span of bridge opening;
4. Section size of segment block and position of lifting point;
5. Bridge pier section size, height and bearing capacity of bending;
6. Bridge deck longitudinal slope and transverse slope;
7. The minimum curve in the section;
8. Beam selection.
This segmental launching gantry crane is especially suitable for beam construction of long-span Bridges across rivers, Hubo, railway, highway and city single road.
We respond immediately to any questions , inquiries and needs , feel free to contact us at any time .
