Prefabricated track construction technology
Prefabricated track construction technology are carried out by 5 steps.
Step 1: Carry out track slab base construction.
Step 2: Lay self-compacting steel mesh on the base, then use gantry crane or truck crane to hoist the track slab from the track well or section shield well of the track laying base to the track area, then use the rail car to transport the track slab to the construction work surface, and finally use the track laying car to hoist and lay it to the predetermined position.
Step 3: Fine-tune the track slab, use high-precision total station + fine-tuning prism for rapid measurement, obtain adjustment data, and then use special fine-tuning equipment to adjust the track slab to the designed position, and the adjustment error is controlled within 1 mm.
Step 4: After fine-tuning, install the edge sealing template and anti-floating device to fix the track slab.
Step 5: Pour self-compacting concrete between the track slab and the base to permanently fix the track slab.
Step 6: Install the fastener rail and use the track inspection trolley to check and adjust the track to form a smooth and comfortable subway track.
