RU1815307C - Foundation - Google Patents

Abstract

Appointment: construction of buildings, structures in seismic areas. SUMMARY OF THE INVENTION: The foundation includes a lower trough and an upper plate. Between the plates there is a damping device in the form of cylindrical rollers. Plates are made in plan round. The axes of the rollers are oriented radially and perpendicular to the sides of the bottom plate. The rollers are hollow with a slot, the slots are oriented along the generatrix of the cylinder. The rollers are grouped in pairs, in each pair the walls of each roller are partially brought into the cavity of the other roller through a slot. 4 ill.

Description

The invention relates to the field of construction and can be applied in the construction of one-two-story structures in seismic areas.

The purpose of the invention is to increase earthquake resistance.

In FIG. 1 presents the foundation in the plan; see 2-section A-Anafig. 1; nafig.Z - mating rollers; figure 4 is a section bB in Fig.Z.

The foundation of the earthquake-resistant structure includes a lower trough-like round plate 1 (Figs. 1 ... 4), an upper round plate 2 (Figs. 1 ... 3), hollow cylindrical rollers 3 (Figs. 2 ... 4), grouped in pairs using a slot 4 (Fig.2,3), oriented along the generatrix of the cylinder, and partially inserting the walls of each roller into the cavity of another roller through the slot, an elastic-plastic material 5 (fi-g.2), installed between the side of the lower plate 1 and the upper plate 2, elastoplastic material 6 (Fig.Z), made in the form of a channel, and worn on the end rollers placed in slots 4, 7 elastoplastic material (fig.Z), mounted between the pairs of adjacent kat-. forks, dampers (for example, steel springs) 8 (Fig. 3,4), attached to embedded parts 9 (Fig. 4) of the side of the lower plate 1 and to embedded parts 10 (Fig. 4) of the rollers, electric welding 11 (Fig. .4), brickwork 12 (figure 2).

Foundation materials: plates, rollers - reinforced concrete; embedded products, dampers - steel; elastoplastic material - rubber.

Installation installation foundation. Install the lower trough-like plate 1 (Fig.1,2). At the factory of reinforced concrete products, rollers 2 are prepared (Fig. 2,3). In the same place, on the ends of the rollers located in the slot, put on an elastic-plastic material 6 and pair the rollers, setting them in a vertical position, i.e. the forming roller should be perpendicular to the horizon.

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We begin the installation of paired rollers 3 (Fig.2, 3), installing them in a circle, closer to the sides of the bottom plate 1.

After that, the dampers 8 (Fig. 4) are attached to the Embedment parts 9 (Fig. 4) of the side of the bottom plate 1 and to the embedded parts 10 (Fig. 4) of the rollers by electric welding 11 (Fig. 4).

Then between the rollers set the elastoplastic material 7 (Fig.Z). The upper plate 2 (Fig. 2) is mounted and the elastoplastic material 5 is installed (Fig. 2).

The foundation works as follows.

The bottom plate 1 (Fig. 2) will transmit a seismic effect to the rollers 3 (Fig. 2), which, due to the presence of a slot 4 (Fig. 2,3), will bend and oscillate, thereby lowering the magnitude of the seismic effect. .

The plate 2 (Fig. 2) from vibrations of the rollers 3 will sway, rise and fall. Following the slab 2, the brickwork will rise and fall, i.e. by

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the contact layer of the slab 2 - masonry 12 (Fig. 2) will not act destructive horizontal shear force, or will act reduced by 50 ... 70%.

The foundation of earthquake-resistant construction will be widely used in seismic areas in the construction of one-story buildings with brick walls.

SUMMARY OF THE INVENTION The foundation of an earthquake-resistant structure, including a lower trough-shaped and an upper plate, between which a damping device in the form of cylindrical rollers is placed, characterized in that, in order to increase the seismic resistance of the foundation, the plates are made round, the axes of the rollers are oriented radially and perpendicular to the sides of the lower plate, the rollers are hollow, with a slot oriented along the generatrix of the cylinder and grouped in pairs, and in each pair the walls of each roller are partially wound into a cavity oh skating rink through the slot.

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