SU1379406A1 - Building or structure constructed in areas with earthquake hazard - Google Patents

Abstract

The invention relates to the field of construction in seismic regions, namely, to structures of buildings with seismic isolation systems, and is intended to improve the dissipative properties of the foundation soil. The aim of the invention is to prevent deformations in various directions and modes of horizontal ground vibrations. A building constructed in seismic areas includes the structural structure 1, the height

Description

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Werk 2 and piles 3 pivotally connected to it. Each of the piles 3 in the upper part is freely placed inside the gasket 4 of the tubular element 5 having the upper part attached to the pile 3 rigidly connected to the pile 3. The building is equipped with structures around the supporting structure 1 above the grillage 2 is mounted concentrically relative to each other with gaps 6 by cylindrical elements 7 and 8. Od1P1 cylindrical element 7 is made with double walls united by an annular bottom. The wall facing the supporting structure 1, the protrusion, is out of the bottom and rigidly attached to the tubular elements 5 of the outermost piles 3. Another cylindrical element (the ant is placed between the walls, supported through the sealing space; and on the ring bottom and rigidly attached to the upper end face: / and supporting structure 1 of the annular uniToi i, supported through sealing gaskets on the upper ends of the double walls. The gaps between the center and 7 elements of the shindry elements 7 and 8 are filled with viscous;

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The invention relates to construction in seismic regions, namely, to buildings with seismic insulation systems, and is intended to enhance the dissipative properties of the foundation soil.

The aim of the invention is to prevent deformation at different directions and modes of horizontal ground vibrations.

Fig. 1 shows the proposed construction, a longitudinal section; FIG. 2 — node I in FIG. one; in FIG. 3, node II in FIG. 2; in fig. A - node III in FIG. 2

The building, constructed in seismic areas, includes a supporting structure 1, mortar 2 and piles 3 pivotally connected to it. Each of the piles 3 in the upper part is freely placed inside a tubular element 5 having an upper part fixed to the upper part 4 pile 3.

The building, the structure is equipped with cylindrical elements 7 and 8 located co-centrically relative to each other with gaps 6 located above the supporting structure 1 above. One cylindrical element 7 is made with double walls 10 and 11 with a combined ring bottom 9. Wall 11 facing the supporting structure structure 1, extends beyond the bottom 9 and is rigidly attached to the tubular elements 5 of the outermost piles 3.

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Another cylindrical element 8 is placed between the double walls 10 and 11, supported through sealing gaskets 12 on the ring bottom 9 and is made with an annular plate 13 rigidly attached to its upper end and the supporting structure 1 supported by sealing gaskets 14 on the upper ends of the double walls 10 and 11, the gaps 6 between the cylindrical elements 7 and 8 are filled with a viscous liquid 15,

The underground part of the supporting structure 1 is isolated from direct contact with the ground by the gap 16 between the solution 2 and the preparation 17 and the enclosing structure 18,

Sealing gaskets 14 between the ends of the walls 10 and 11 of the cylindrical elements 7 and the annular plate 13 consist of gaskets made of plastic material, such as lead, and fixed in grips 19, which are welded to the wall of the channel bar 20, installed through the wedge 21 on the fixings 22 the walls 10 and 11 of the cylinder elements 7, the top face of the gasket 14 are in contact with the embedded part 23 of the ring plate 13, the cavity between the channel 20 and the end of the cylindrical elements 7 after adjusting the position of the gasket 14 s E 21 is filled with a cement-sand mortar 24 by injection through 25, before tube

by injection of the sand and sand mortar, shoeller 20 and Kliyei 21 are fastened by welding them to the embedded part 22 to the walls 10 and 11 of the cylindrical elements 7.

The sealing gaskets 12 between the ends of the cylindrical elements 8 and d1 of the I1c consist of gaskets made of plastic material fixed in the grippers 26, which are welded to the mortgage part п1 27 cy-; p1dricheskogo element 8. Contact the side of the gasket 12 in contact with the embedded part 28 of the bottom 9.

The stiffness of the base of the cylindrical elements 8 is determined by the rigidity of the enclosing walls 18 of the supporting structure 1. If necessary, an increase in the rigidity of the enclosing walls 18 of the supporting structure 1 is achieved by connecting them with the shock side of the tubular elements 5 of the piles 3, as well as by installing additional supports zone size | l cylindrical elements 8.

In the general case, a viscous damper is placed at a certain height from the raster 2. This will provide damping of both horizontal and swing oscillations of the building or structure.

Viscous drag damper operates as follows.

With an earthquake, the supporting structure 1 begins to oscillate} I1 relative to the base. Corresponding to the cylindrical elements 8, rigidly

connected to the supporting structure

2, transverse oscillations are made with respect to the cylinders of the cylindrical elements 7 connected through the fencing structures steum 18 with the base. When this happens,

It is pumping a viscous fluid along circular paths inside each closed volume between adjacent cylindrical elements 7 and 8, which is accompanied by the absorption of the oscillation energy. Sealing gaskets at the ends of the cylindrical elements 7 and 8 exclude the possibility of the flow of a viscous liquid from one closed volume to another and its extrusion through the upper edges of the end of the cylinders of the cylindrical elements 7. This prevents

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calling the air gaps in the working volumes and provides for getting 1D1e device-specific damping parameters. The design of the gaskets on the ends of the cylindrical elements 7 and 8 allows for fairly accurate installation of the contact surfaces of the gaskets 14 and 12, respectively, with the annular plate 13 and the collar bottom 9. Use of plastic material (.a) as gaskets, it provides a workable HocTi damper and sufficient tightness of cavities filled with a viscous liquid, if there are random irregularities on the inner surfaces of the ring plate 13 and the ring bottom 9 within the possible oscillation amplitudes of the supporting structure 1 relative to the base.

Claims (1)

Invention Formula A building, a structure erected in seismic areas, including a supporting structure, mortar and piles hinged with it, each of which in the upper part is freely placed inside a tubular element rigidly connected to the pile at the upper end, characterized in that, in order to prevent deformations in various directions and modes of horizontal ground vibrations of the base, it is provided with the solution above the concentric structure arranged above the supporting structure relative to each other, with gaps cylindrical elements, one of which is made with joint d1N1 rings with twin walls, one of which, facing the supporting structure, projects beyond the limits of the wall and is rigidly attached to the tubular ele- ment of the outer piles, and the other cylindrical element placed between the double walls, supported through the sealing proc:) adki on the ring bottom and made with a ring plate rigidly attached to its upper end and the supporting structure, supported through sealing gaskets on Upper double walls, with the gaps between the cylindrical elements filled with a viscous liquid. ig.2 27 23 22 Fi.Z