SU715757A1 - Multistorey erathquake-proof building - Google Patents

Description

(54) MULTILEVEL SEISMIC RESISTANT BUILDING

 I,

The invention relates to a string of stresses, namely to the construction of multi-storey seismic resistant buildings.

A seismic resistant high-rise building is known, including a foundation, spatially rigid upper floors, a lower floor with a slab, horizontally flexible legs with spherical ends, and an extinguishing device in the form of a rigidly fixed slab in the slab with an end to the console located in each other. extinguishing plates with a decreasing height and aperture diameter 1}.

The disadvantage of this design is that the damping washers are material-intensive and occupy a significant amount of the lower one.

The closest technical solution to the proposed one is a multi-storey earthquake-resistant building, including the foundation, spatially rigid upper floors, the lower floor with a slab and racks with spherical ends, damping devices consisting of a reinforced concrete console rigidly fixed in the bar of the ceiling and made in shell, covering the rack and interacting with damped washers (2.

The disadvantage of this design is the significant consumption of damping elements.

The purpose of inventing - reducing material consumption.

The goal is achieved by the fact that in a multi-storey earthquake-resistant building, including a foundation, spatially rigid upper floors, lower floors with a slab, swinging pillars with spherical ends arranged in the recesses of the foundation and slab, pfekrygi, and damping devices consisting of reinforced concrete the console, rigidly fixed in the slab, made in the form of a shell, covered by a stand and interacting with absorbing elements, each damping element is made of multi-strand cables of different diameters with rigid erdechnikom that one end rigidly fixed in the end of the console, and the other placed in the recess of the foundation of the rack, which is placed in a steel box-holder

with cable openings corresponding to cable diameters. In addition, the ratio of the diameters of the cables placed in the corners of the box holder, the diameters of the cables placed along the rack axles is 2: 1, and the ratio of the gaps between the cables and the edges of the holes located in the corners of the box holder and cables and the edges of the holes placed on the rack axis is equal to 1.4: j.

In the event of building oscillations from seismic or other loads with relatively small amplitudes, cables with the smallest diameters first placed in the openings of the cage with corresponding diameters start to work. With increasing amplitude of oscillations, cables with a diameter come into operation, since the gap between the edge of the hole and the cable is increased compared to the previous one.

With the horizontal movement of the console, the cables are rigidly fixed at its end and, resting against the edge of the hole, begin to work for bending. As a result, forces arise between the strands and between the strand and the core. These forces resist the horizontal movement of the cantilever. Thus, there is a damping of building vibrations, including resonant ones.

The material intensity of gas aas. zlementov sharply reduced, because instead of reinforced concrete damping shchibi work segments of cables.

.In FIG. 1 shows a cross-sectional diagram of a building; in fig. detail of the damping element; in fig. 3 is a section A-A in FIG. 2

A multi-seismic resistant building includes foundation 1, spatially rigid upper floors 2, floor 3 with a slab 4 overlapping, swinging pillars with spherical ends 5. The damping device consists of reinforced concrete krnsoli 6 rigidly fixed in slab 4 overlapping in the shape of a shell covering rack S, and damping elements 7 and 8, made of multi-strand cables with different diameters with a hard core. The damping elements 7 and 8 are fixed at one end to the end of the cantilever 6, and to the other are placed in the openings 9 and 10 with different diameters of the steel box-shaped cage 11, bounding the recess 12 of the foundation 1.

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The ratio of the gap between the edge of the hole 9 and the cable 7 to the gap between the edge of the hole 10 and the cable 8 is 1.4: 1, and the ratio of the diameter of the cable 7 to the diameter 5 of the cable 8 is 2: 1. Cables 7 and 8 are rigidly fixed to the end of the console 6 with the help of embedded parts 13.

The number of extinguishing devices in a building is accepted by calculation.

0 With several damping devices, in each of them there may be cables of the same diameter with corresponding holes in the holder.

Claims (2)

Invention Formula  ,one. A multi-story earthquake-resistant building, including a foundation, spatially rigid upper floors, a lower floor with a slab of overlap and horizontally flexible struts, with spherical ends, sectionalized into the recesses of the foundation and the slab, and damping devices consisting of a reinforced concrete cantilever fixed in the slab and made in the form of a shell covering the rack and interacting with damping elements, characterized in that, in order to reduce material consumption, each damping element in Full multipass devyh of cables of different diameters with a hard core, which one end rigidly fixed in the end the console, and the others placed in the recess of the foundation around the rack, in which the steel box sleeve is placed with cable holes corresponding to the diameters of the cables. 2. The building according to p. 1, about t} i and ch and y with the fact that the ratio of the diameters of the cables placed in the corners of the box-shaped cage to the diameters of the cables placed along the rack axis is 2: 1, while The ratio of the gaps between the cables and the edges of the holes placed in the corners of the box-shaped cage and the cables and edges of the holes placed along the front of the rack is 1.4: 1. Information sources, taken into account in the examination 1. Author's certificate of the USSR N 577287, cl. E 04 H 9/02, 1976. 2. USSR author's certificate in application N 2607754 / 29-33, cl. E 04 H 9/02, 1978. Fi.9.2