METHOD TO ASSEMBLE INVENTORY LOW-WATER BRIDGE ON SCREW PILES Russian patent published in 2012 - IPC E01D15/12 

FIELD: construction.

SUBSTANCE: method to assemble an inventory low-water bridge on screw piles, in which a coastal support is equipped on an entry bank, and the inventory property of the bridge is stocked near the water edge. A ferry with pile fixators attached to it is dropped to water, and an autocrane is installed on it with parts of serial screw supports placed onto the ferry and inserted into the bridge range. Screw piles are inserted into fixators by the autocrane, a detachable capstan is put on and fixed on them. A rope is attached into the capstan, and a pile is screwed into soil by means of autocrane weight lifting. Then the operation is repeated with the second pile, and the autocrane mounts a serial screw support, afterwards the operation of serial screw support assembly is repeated. Then the ferry with the autocrane is installed into the first bridge span, and it picks the rolled beams from the shore and lays them into the first and second bridge spans. Afterwards the ferry with the autocrane is moved into the second span, and rolled beams are laid from the second into the third span. Then the traffic area and the breast rail are assembled manually, exits from the bridge are arranged.

EFFECT: reduced labour inputs, higher efficiency of low-water bridges construction under wartime conditions, disasters and emergencies.

10 dwg