SU1193259A1 - Skeleton of multistorey building - Google Patents

Description

The invention relates to the construction of residential and public buildings, namely, to structures of cages with tension of rebar reinforcement in construction conditions. The purpose of the invention is to increase the carrying capacity of the frame by increasing the forces of friction and reducing material intensity and labor intensity. FIG. Figure 1 shows a fragment of the structure of a multistory building; in fig. 2 section A-A in FIG. one; in fig. 3 -. fragment of the framework of a multistory building before laying the floor slabs; in fig. 4 assembled part of the transom. The frame of a multistory building contains columns 1 with openings 2 at the level of floors 3, prefabricated monolithic bolts 4 located in two orthogonal directions at the gate

1 and made with prestressed reinforcement 5, passed through the openings of 2 columns 1, 6 floor slabs.

The prefabricated part of the bolts 4 is made in the form of 7 with a construction lift, equipped with loops 8 of variable height, through which reinforcement 5 is passed. Loops 8 are placed in at least two longitudinal rows with a decrease in their height from the ends of the plates 7 to their center.

The installation of the frame begins with the installation of columns on which inventory tables 9 are fastened, and plates 7 bolts 4 are supported on them. The zone between columns 1 and plate 7 is sealed with mortar. Through the openings of 2 columns 1 and through

states, i.e. when exposed to the girders 4 of the installation load and the load from the floor slabs 3, the concrete 10 of the monolithing is in an inoperative state. When making floor slabs of hollow plates, voids must be sealed with mortar or other material prior to their installation in order to embed the zone

between the ends of the floor slabs 3 and the plates 7. After a set of 10 concrete strength, inventory tables are dismantled. The number of loops 8 is determined by calculation.

For the device of floors 3, it is possible to use different plates (ribbed, flat, hollow) the size of the frame cell or part of it. 20 chasing columns are in different strands — loops 8 of the PLATE 7; armature 5 is missed. Loops 8 have a variable height with its restriction from the ends of the plate 7 to its center to regulate the operation of the reinforcement 5. Loops 8 are also used as lifting loops. Then, reinforcement 5 is strained. Next, the floor slabs 3 are laid, resting them on the plates 7 of the crossbars 4. The load from the floor slabs 3 of the plates 7 is transferred to the columns due to the frictional forces between the ends of the plates 7 and the columns 1. The zone between the ends of the floor slabs 3 and slab 7 are monolithic by concrete 10. Prefabricated monolithic bolts 4 are formed, in which concrete of precast slabs 7 and concrete 10 are crushed

FIG.

Claims (1)

(57) MULTI-STOREY BUILDING FRAME, including columns with openings in the level of the floors, precast monolithic crossbars located in two orthogonal directions in the alignment of columns and made with prestressed reinforcement passed through the openings of the columns and the floor slab, characterized in that, in order to increase the bearing capacity of the frame by increasing friction and reducing material consumption and labor, the prefabricated part of each crossbar is made in the form of a plate with a building hoist equipped with loops for skipping and prestressed reinforcement made variable height and arranged at least in two longitudinal rows.