SU1222796A2 - Method of reinforcing a multistorey building - Google Patents

Description

The invention relates to the construction, can be used as a method of strengthening multi-storey buildings, deformed with uneven subsidence of soil and is the improvement of the device on the main ed. St. No. 1178887.

The purpose of the invention is to increase the strength and rigidity of reinforced concrete along the contour of the load-bearing walls when it perceives horizontal forces when asymmetrical with respect to the longitudinal axis of the soil shedding.

FIG. 1 shows the building in the attic level, plan; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 — node 1 in FIG. 2 and 3; in fig. 5 is a section B - B in FIG. four; in fig. 6, node 1 in FIG. 2 and 3 (option with a tension of rods).

In case of forced asymmetrical subsidence of the soil relative to the longitudinal axis of the building, with possible hanging of a part of the building, the reinforcement of the latter is carried out as follows. Before starting work on reinforcing a multistory building, holes are made in their walls 1, walls 2 of the foundation, in the attic floor 3 and ceiling 4, in accordance with the working drawings.

Further, in the load-bearing walls 1, the walls 2 of the foundation, in the attic floor 3 and the floors 4, holes 5 and 6, for example, are drilled.

Anchors 7 are wound into the holes 5 of the supporting walls 1 and walls 2, and in the hole 6 of the attic overlap 3 and overlap 4, the vertical rods 8. After that, the anchor 7 and the rods 8 are joined, for example, by welding. The length of the rods is limited, so if necessary, they are increased, for example, by welding.

Next, in the attic floor 3, formwork 9 is installed with a gap on the supporting walls, for example, on wooden stands a formwork 9 in which the reinforcement cage 10 of reinforced concrete section 11 is placed. Armature 13 is placed in the cells 12 between the walls of the formwork 9 and connected to the reinforcement of the framework 10 After this, concrete is simultaneously laid in formwork 9 and cells 12. The concrete is laid in two stages: first, to the base of the formwork 9, and then only to formwork 9, thereby forming protruding ribs 14 and plates 15 between them.

In the monolithic fins and slabs, holes should be provided for the passage of engineering communications (pipelines, air vents, etc.) into the attic space.

The insulation of the attic floor 3 is restored. In the event of significant cracking in the walls, before the building begins to stretch, the tension of the vertical rods 8 to limit the size of the opening is as follows. After passing the vertical rods 8 through the openings 6, they are connected to the anchors 7 only in the foundation walls 2. Next, when installing the reinforcement cage 10, tubes 16 are installed above the holes 6, into which the ends of the vertical rods 8 are inserted. The vertical rods 8 pull, for example, with jacks.

The proposed method allows to increase the strength and rigidity of reinforced concrete, and thus ensures the perception of the forces arising in buildings during any forced uneven subsidence of the soil.

FIG. 2

B- B

eleven

ten

one

rj

/

eight

tJ

 WITH

.siz

Srig.5

6

Claims (1)

METHOD FOR STRENGTHENING A MULTI-STOREY BUILDING by ed. St. No. 1178887, characterized in that, in order to increase the strength and stiffness of the reinforced concrete belt along the contour of the load-bearing walls while perceiving horizontal forces with ground subsidence asymmetrical with respect to the longitudinal axis of the building, at the same time as the reinforcing belt reinforcing cage is installed along the load-bearing wall contour of the cell between the latter, connecting the reinforcement of the cells with the reinforcement of the belts, then they are monolithic with concrete. 12.15 ^to ί