Application range of segments assembly beam launcher
Segments assembly beam launcher is used to erect the prestressed concrete girder segments. The assembly of girder adopts short line matching precast which is assembled on site, all girder segments in one span are lifted and suspended on the main girder, then coated and stressed to be an entirety, finally lower down the full span on the piers. The maximum weight of prestressed segment shouldn’t exceed 130/140t. The construction method of segments assembly beam launcher is segments hanging and then stressing after the steel strands are threaded.
Main features and advantages of segments assembly beam launcher
● It adopts two-span type；the load bearing part of main frame uses box girder structure with good twist resistance; the front and rear guiding girder adopt truss girder structure with light weight.
● it is equipped with 10t crane which lift some small parts on the bridge in order to construction conveniently.
● The layout of whole machine is parallel and symmetrically, so it can travel reversely. The front and rear legs adopt the same structure which can make the leaping backward come true, in order to improve the efficiency.
Main technical parameters of segments assembly beam launcher
|Max. hanging weight(t)||1600|
|Lifting height of trolley(m)||56|
|Rated lifting capacity(t)||140|
|Max. working slope||2％|
|Max. working transverse slope||2％|
|Min. curved radius(m)||5500|
|Speed of erection of girder(day/span)||10|
|The whole machine power(kw)||180|
|The total weight(k)||750|