FIELD: construction.
SUBSTANCE: invention is related to the sphere of construction, in particular, to method of repair and reconstruction of high-rise reinforced concrete structures. Method consists in the following: self-lifting circular work platform is assembled from independent lifting mechanisms that are connected with links, with the possibility of its diameter variation. Along edges of every lifting mechanism guides are installed, parallel to which hoists are installed with traction sheaves fixed in frames that are connected with guiding top and bottom strainers, which are installed parallel to work platform deck. Prepared parallelogram mechanism is used for provision of deck horizontality. Rollers are installed on guidelines: bottom ones for movement on new concrete, top ones - for movement on old concrete. Formwork shields that are removed from the bottom tier are installed on the shields of top tier that contact with green concrete with achieved required strength. Lift of work platform is carried out with hoists with traction sheaves. In order to increase weight-lifting capacity of work platform, rope from hoist that goes to structure cut is passed through diverting unit installed there and returned to lifting mechanism and fixed next to hoist fixture. Lifting of weights on work platform is carried out by interaction of two hoists installed at zero elevation.
EFFECT: reduction of labor intensity of works production.
4 cl, 6 dwg
