SU1728442A1 - Method for building structures by lifting floor slabs - Google Patents

Abstract

The invention relates to the construction, in particular to the construction of buildings and structures by the method of lifting floors. The aim of the invention is to reduce the cost of construction and increase the operational reliability of the building being erected. The method of erection includes the installation of racks 1, the manufacture on the ground of a package of plates of 2 floors, the installation on the top plate 2 by means of elastic supports of stepper lifts 8 with wedge-shaped grippers, a step-by-step lifting of the plate 2 with self-sealing

Description

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FIG. one

it is on racks 1 by means of wedge-shaped elements and successive lifting of the remaining plates in the process of lifting the overlying ones. On each plate 2, before lifting, inventory detachable collars 4 are fastened in which wedge-shaped elements are placed. After removal of the plates 2 to the design position of the rack 1, they are concreted, starting from the lower floor, to form

The invention relates to the construction, in particular to the erection of buildings, structures by the method of lifting floors.

The aim of the invention is to reduce the cost of erection and improve the operational reliability of the building being erected.

Figure 1 shows a building construction plan; figure 2 - the connection of all elements in the process of lifting; FIG. 3 shows the formation of a platform joint and the closure of gaps.

The method is carried out as follows. After the foundations are installed, steel struts with 1 I-section are installed under the racks. On the prepared base, a package of 2 slabs with gaps 3 around racks 1 is concreted. The size of the gaps is determined from the conditions for compensating the tolerances for the manufacture, installation and lifting of building elements, as well as the processability of concrete casting in the area of the supporting unit.

On the top plate 2 overlapping packages, an inventory collar 4 with wedge-shaped elements 5 is installed in the girth of the rack 1. The collar is fixed on the plate with tension bolts 6 embedded in slots 7. The stepper lift 8 with wedge grips 9 is installed in the girth of the rack 1 on the plate overlap on the elastic supports 10 and connect with the plates of the rods 11 fixed in the slots 12.

All lifts installed on one slab at each rack are connected to a common lift system (not shown).

When the lift 8 is turned on, the overlap of 2 tons of gami 11 rises by the amount of the driving stroke of the propeller, compressing the elastic supports 10. At the end of the lift, inventory inventory collar 4 is wedged with elements

plate supports, and the collars 4 dismantle. To avoid deformations of the posts 1 with wedge-shaped grippers of stepper lifts 8 and wedge-shaped elements of collars 4, and to simplify the molding of the posts 1, steel bars of an open section, mainly I-beam, are used as the latter. 1 hp ff, 3 ill.

5 on the rack, and the energy stored in the elastic supports pushes the lift 8 upward on the rack 1 also by the magnitude of the working stroke. The next lifting cycle starts with the lift 8 getting stuck on the stand 1 with the help of the grippers 9, after which the work is repeated in the specified sequence. Due to the presence in the elevator 8 of wedge-shaped grippers 9 and elastic supports 10, and in the collar 4 of wedge-shaped elements 5 interacting with the stand 1, the lifting is carried out cyclically with alternate self-fixing and self-fastening them on the stand 1. In the process of lifting the upper plate 2 overlapping upon reaching her height 2-2.5 m above the package of the remaining plates

2 on the top of them install the next set of collars 4 and lifts 8 and begin the rise of the next plate 2 in the same way.

After all the slabs 2 floors have been removed to the design marks, the lifts 8 are removed and columns 13 form around the posts 1, which perceive not only the weight of the plates, but also other constant and operational loads. To do this, sequentially, starting from the lower floor, concrete is injected into the adjustable formwork until it fills the gaps 3 between the slab 2 and the stand 1, which performs the function of rigid reinforcement of the column. If necessary, in the column 13 is placed an additional flexible steel reinforcement. Ensuring proper density of the laid concrete and filling gaps

3 makes the interface of the slab 2 with the column 1 frame, and the building sustainable.

After the concrete has hardened, the collars 4, the supporting plates 2 of the floors on the uprights 1 in the design position1, are removed,

Such an embodiment of the method of erection of a building, construction by the method of lifting floors provides a reduction in the cost of

the manufacture of floor slabs and the possibility of multiple use of collars with wedge-shaped elements in the construction of similar buildings.

The possibility of using rolled steel as racks allows refusing the prefabrication of reinforced concrete columns under factory conditions, which reduces the overall construction period.

Replacing the interfacing node with the column from the friction to the platform allows to achieve the specified level of structural reliability with less consumption of structural materials and, consequently, labor costs.

Claims (2)

1. The method of building a building, building a method of lifting floors, including installing racks, making a package of floor plates on the ground, installing on the top plate by means of elastic supports of stepper lifts with wedge-shaped hooks, stepping the plate from a samozak five 0 shedding it on racks by interacting with the latest wedge-shaped elements and successive lifting of the remaining plates in the process of lifting the overlying ones, characterized in that which place the wedge-shaped elements, and after removing the plates to the design position of the rack, they vow, starting from the lower floor, with the formation of plate supports, and the collars dismantled. 2. A method according to claim 1, characterized in that, in order to eliminate the deformation of the struts with the wedge-shaped grippers of the step lifts and the wedge-shaped elements of the collars and to simplify the concrete molding of the struts, the latter use open-rolled steel, mainly I-beams. FIG. 2 Fig.Z