| 摘要 |
FIELD: construction.SUBSTANCE: method to install a stiffening girder of a cable-braced bridge consists in pre-assembly for a full section of a space block of the stiffening girder on building slips and its delivery to the place of installation, slinging of the block to a weight-lifting device, movement of the block to the design position, its fixation on the previously assembled part of the stiffening girder and attachment of cable braces to the assembled blocks and their tightening. The space block of the stiffening girder after pre-assembly on the building slips is moved to the assembled part of the stiffening girder, it is aligned along the axis of the bridge and loaded onto rolling trolleys. The rolling trolleys with the space block of the stiffening girder located along the axis of the bridge are moved to the place of the assembly, locked via the weight-lifting device, and the rolling trolleys are turned outside the zone of attachment of the previously tightened cable braces by 90° together with the space block of the stiffening girder. Then they sling the space block of the stiffening girder to the weight-lifting device and move it to the zone of installation. After fixation of the space block the stiffening girder, the cable braces are fixed to the assembled part of the stiffening girder to the earlier mounted space block of the stiffening girder with their subsequent tightening, afterwards the installation process is repeated.EFFECT: improved reliability.2 dwg |
