RU1790644C - Building foundation - Google Patents

Abstract

Usage: the construction of foundations under the round in terms of construction. SUMMARY OF THE INVENTION: The foundation is made in the form of a wall in the ground. The wall consists of rectilinear sections, which are planed around the circumference and form a polygon. The circle into which the inner contour of the wall is inscribed coincides with the circumference of the inner contour of the base of the structure. The circumference described around the outer contour of the wall coincides with the circumference of the outer contour of the base of the structure. Wall sections are docked to each other. Joints and wall sections have the same strength. Wall sections can be made inclined. In this case, the inclination of the section of the foundation walls corresponds to the inclination of the exterior walls of the structure. 1 s.p. f-ly, 3 ill. ate with

Description

The invention relates to the construction of foundations made by the wall in soil method for round in terms of structures such as exhaust chimneys, various towers.

Foundations of the cylindrical shell type are known as a continuation of the tower barrel (prototype).

However, it is rather inconvenient to carry out the foundation, which is a continuation of the chimney barrel, because of the dimensions of the chimney and the mass of the chimney and requires a large consumption of materials, because it should be deep and fit the shape of the pipe.

The aim of the invention is to reduce the material consumption of the foundation.

The goal is achieved in that the foundation is made by the wall in the ground method in the form

polygon and that the circles, one of which is described, and the other is inscribed with respect to the internal and external contours of the wall in the ground, respectively, coincide with the circles of the contours of the structure of the same name at its base, and the wall sections and joints between them are made equally equal. For chimney foundations, in order to increase the bearing capacity of the base, sections of the wall in the ground are made with an inclination corresponding to the inclination of the external walls of the structure (walls of the chimney barrel).

The criterion of significant differences for this foundation is the following qualitative characteristics:

circles, one of which is described, and, the other is inscribed relative to the internal and external contour of the wall, respectively

vj

Oh Oh

s Ј

With

soil, coincide with the circles of the contours of the same name of the structure at its base, and wall sections and joints between them are made equally strong; sections of the wall in the ground are made with a slope corresponding to the slope of the exterior walls of the structure.

Figure 1 shows a cross-section of the foundation wall in the form of a vertical wall in the ground, where the outer face 1 at the junction with the wall of the structure is described as a polygon relative to the outer edge of the RING Wall of the structure 3, and the inner face 2 is inscribed as a polygon relative to the inner edge of the structure 3; Fig. 2 is a cross-sectional view of the foundation wall in the form of a direct extension of the inclined wall of structure 3, i.e. in the form of an inclined wall in the ground; Fig. 3 is a plan of the foundation of the ring structure at the bottom of the walls of structure 3 for both options.

The wall in the ground is made in the form of a closed polygon, where the sides with gran 0

5

0

5

With planes 1 and 2, the soil can be developed with the maximum opening of the jaws of the grab less than the length of the face 2. The joint of the straight sections of the wall in the soil is carried out so that the strength of the straight section and the joint are the same. In this case, the foundation, limited on the sides and on the sole 5, transfers loads to the soil 4 as follows: vertical - faces m 1 and 2 and the sole 5, and horizontal from the wind pressure on the trunk - only faces 1 and 2, which is possible with equal strength ™ of straight sections to the corner joints connecting them.

With a pipe height of 210 m and a diameter of 8.4 m, the outer diameter of the bottom of the trunk can reach 20-25 m, and the load on the soil can reach 300 MPa.

For this considered case, the saving of reinforced concrete can reach 1000 m3 in comparison with the ring foundation. It should also be considered a factor of convenience in conducting work in cramped conditions in pointed areas.

Claims (2)

SUMMARY OF THE INVENTION 1. The foundation of the structure, including a wall in the ground of docked rectilinear sections, which in plan form a polygon, characterized in that, in order to reduce the material and capacity of the foundation under the circular structure in the plan, circles, one of which is described, and a friend is inscribed relatively with responsibly, the internal and external contours of the walls coincide with the circles of the contours of the same structure at its base, and the wall sections and the joints between them are made equally strong. 2. The foundation according to claim 1, with the fact that the wall sections are made with an inclination corresponding to the inclination of the exterior walls of the structure.