| 摘要 |
FIELD: construction industry. SUBSTANCE: invention relates to construction of metropolitans as well as industrial buildings. Travelling forms for placement of concrete on ceilings include supporting structure provided with moving mechanism, forms section and lifting hydraulic cylinders. Forms section is coupled to supporting structure with the aid of lever hinged with one end to supporting structure and with the other end - to opposite end of lower part of forms section. Rod of each lifting hydraulic cylinder is suspended in joint from forms section. Body of each lifting hydraulic cylinder has baseplate to rest against foundation of structure connected to body by means of spherical hinge. Travelling forms include hinge structure provided with moving mechanism with running wheels resting against rails. Close to lifting hydraulic cylinders beneath forms section there are suspended rods of supporting columns which bodies rest against foundation of structure through baseplates. Forms section is equipped with face forms, scaffolds and ladders. It is lifted into working position after forms are installed under erected ceiling with the use of pumping plant and hydraulic cylinders. Then it is fixed in working position, face forms is set into working position with the aid of supporting columns, side clearances between edges of forms sections and walls of structure are compacted, reinforcing cage is installed and ceiling is cast with concrete. After necessary curing of concrete operations mentioned above are conducted in reverse order. Forms section is lowered on to rests of supporting structure, is fixed on it, then forms are moved again into working position to place concrete on next block of ceiling. EFFECT: increased operational efficiency and reliability. |
