SU1423706A1 - Earthquake-proof building - Google Patents

Abstract

The invention relates to the construction of buildings erected in seismic areas. The purpose of the invention is to reduce metal consumption and increase seismic resistance. The building contains walls 1 with openings 2 regularly spaced along with bridges 3 and walls 4. Each bridge consists of two inversely symmetric halves in the form of cantilever beams-walls 7 separated by a Z-shaped seam. The friction forces formed in the seam between them are regulated by compression of the beams-walls 7 with the help of bolts. There is a separating seam between the web and the overlap. 1 hp f-ly, 3 ill.

Description

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The invention relates to the construction of monolithic and large-panel frameless buildings in seismic areas and can be applied in buildings exposed to not only seismic, but also other types of dynamic loads, such as wind, explosive, etc.

The purpose of the invention is to reduce metal intensity and increase seismic resistance.

FIG. 1 shows a fragment of a building with bridges, general view; in fig. 2 - jumpers, a perspective view; pas figs. 3 shows section A-A in FIG. 2

The seismic resistant building contains walls I with regularly spaced openings 2, lintels 3 and walls 4, ceilings 5 and dividing seams 6 walls.

The jumper consists of two inverse-symmetric halves in the form of cantilever beams-walls 7, a Z-shaped seam between them, through holes for the passage of bolts. Dividing seams 6 are located between the overlap 5 and the web.

Under the influence of seismic or other dynamic horizontal loads, in the process of building oscillations, both parts of the halves of the jumper slip relative to each other due to the fact that the diameter of the holes is larger than the diameter of the bolts. In this case, dry friction forces distributed over the surface of the contact appear, the value of which is regulated by the compression stress. The separation seams 6 prevent the concentration of stresses in the overlap 5. The thickness of each half of the web in the end is less than half the thickness of the pier to create a gap between the end and the pier.

When designing a building with lintels of the proposed construction, the variant

By a simple calculation on a computer, it is possible to choose such values of the stiffness characteristics of jumpers from zero to solid cross-section stiffness, at which the steel consumption per building will be minimal due to a more uniform distribution of stresses in the spatial system of the building. In addition, due to the creation of structural friction in the bridge, the energy dissipation in the structure as a whole will increase and the magnitude of the seismic load on the building will be reduced.

The implementation of the proposed jumper construction does not complicate the technology of building erection, since the joint system in the lintel can be obtained by laying it into the formwork before concreting Z-shaped metal shields, subsequently removed or not removable shields from material with higher / first friction properties.

Claims (2)

1. A seismic resistant building containing walls with regularly spaced openings, lintels and walls, ceilings and dividing seams of walls located in the passage of lintels, characterized in that, in order to reduce metal intensity and increase seismic resistance, the dividing seam is made Z-shaped with splitting of the bridge into inverse-symmetric cantilever beams-walls, the thickness of each of which at the end is less than half the thickness of the pier, and the length is less than the span of the bridge with the formation of a gap between the end and the pier. 2. Building according to Claim. 1, characterized in that the overlap is separated from the lintel within its length by a gap. (rigz