| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to the field of construction. A cast-in-place and precast frame of a building, a structure is a building structure with higher stiffness of the frame and increased bearing capacity of the slab. In the frame they use bonding of bent reinforcing ropes of crossbars in monolithic crossbar-column units. The slab crossbar-column units are made with concrete dowels, which are limited by plugs with holes, through which reinforcement stretches in a transit manner, being common for opposite slabs and embedded into dowels and holes of plugs. To control filling of dowels with concrete, there are holes in slabs arranged above plugs. To increase span of bearing crossbars and their bearing capacity, the lower protective level of concrete is reduced to the permissible one (25-30 mm). To achieve the same purpose, it is possible to use high-grade concrete and reinforcement of at least class A500 in production of crossbars. To increase efficiency of labour and considerable reduction of monolithic works, also under negative temperatures, to support external masonry they use prefabricated cantilevers instead of monolithic ones.EFFECT: invention makes it possible to increase stiffness of frame untis and bearing capacity of a slab.4 cl, 7 dwg |
