RU1821532C - Foundation - Google Patents

Abstract

Usage: in seismic areas during the construction of one- or two-story buildings. SUMMARY OF THE INVENTION: The foundation comprises a lower trough-shaped and upper blocks. The upper block is supported on the lower through the radial walls. The walls are placed with a gap relative to the sides of the lower block. In the walls are formed cavities open to the sides of the lower block. The upper and lower surfaces of each cavity are made curved, and their convexity is turned up. An elastic ring is placed between the sides of the lower block and the upper block. 3 ill.

Description

The invention relates to construction and can be used in seismic areas for the construction of one-story buildings.

The purpose of the invention is to simplify the design.

This goal is achieved in that in the foundation, including the upper block supported on the lower trough-like block through an elastic base placed with a gap relative to the sides of the lower block, and the elastic elements installed between the upper block and the sides of the lower block, the elastic base is made in the form of fixed on the lower block of radially oriented walls of rigid material, and horizontal cavities open to the sides of the lower block are formed in the body of the walls with converging upper and lower curvilinear surfaces khnosti, the convexity of which is facing up, and the elastic elements form a ring in plan.

Figure 1 shows the foundation in plan; figure 2 shows a section 1-1; Fig. 3 shows a cross section across the wall.

The foundation includes a lower trough-shaped block 1. (Figs. 1, 2), an upper block 2 (Figs. 1,2), to the lower plane of which a ring 3 is attached (Fig. 2), an elastic base in the form of a wall 4 ( Fig. 2), horizontal planes 5, which are arranged radially between the plates and attached rigidly to the bottom of the lower block, open to the sides of the lower block, 5 (Fig. 2). with converging upper and lower curved surfaces, the convexity of which is facing up, the upper branch 6 (Fig. .2, 3) walls, lower branch 7 (Figs. 2, 3), elastoplastic material 8 (Figs. 2, 3) (for example, rubber), size cushioned in the cavity, the embedded part 9 (Fig. 3) bordering the branches 6, 7 (Figs. 2, 3) on the cavity side, ynpvrr plastic material 10 (Fig. 2) placed between the sides of the plates, the basement 11 (Fig. 2).

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Materials: plates, walls, ring - hard / concrete, embedded parts - steel, elastoplastic material - rubber,

The foundation is mounted like this.

A lower trough-like block 1 is carried out (Fig. 1,2). At the factory-reinforced concrete products, the upper block 2 is made with a ring 3 attached to it (Fig. 2), a wall 4 (Fig. 2) with a cavity 5, in which embedded parts 9 (Fig. 3) are provided. Elastoplastic material 8 is inserted into cavity 5 (FIG. 2) (FIGS. 2, 3).

After mounting block 1, the walls 4 are rigidly attached to the bottom (Figs. 1, 2), and the upper plate 2 is mounted on the upper edges of the walls. Then, elastic-plastic material 10 is fastened between the sides of the plates 1 and -2 (Fig. 2).

The foundation works as follows. . V; -::: / Seismic, the action is transmitted by the lower block 1 (Fig. 2) of the lower branch 7 (Fig. 2) of the wall 4. Since the branch 7 has a rigid connection with the upper branch b (Fig. 2), then under the action of elastic forces branch 6 will bend and begin to oscillate vertically.:

From the action of seismic forces, the top plate 2 (Fig. 1,2) will alternately rise and fall. This is achieved know

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a significant decrease in horizontal seismic shear forces acting on the bottom of the ring 3 (figure 2) (at the contact plate 2, 3 with the upper branch 6 of the wall 4).

Brick walls placed on top plate 2 will rise up and down, with almost no horizontal seismic effects.

Thus, the foundation allows the wide use of masonry as load-bearing walls and significantly increases the seismic resistance of buildings,

FORMULA AND SECTION

A foundation including an upper block supported on a lower trough-like block through an elastic base placed with a gap relative to the sides of the lower block, and elastic elements installed between the upper block and the sides of the lower block, characterized in that, for the purpose of simplifying the construction of the foundation, the elastic base is made in the form of radially oriented walls of rigid material fixed to the lower block, and in the body of the walls horizontal cavities open to the lower block are formed with converging upper and lower curved surfaces, the convexity of which faces upwards, and the resilient elements form a plane ring ,; .

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