RU2385994C1 - Foundation - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: foundation comprises support part, vertical stiffening ribs installed in it, which form square metal frame, under-column part arranged on vertical stiffening ribs - metal frame and equipped with elements of column structure connection. Support part is equipped with lower and upper reinforcement grids, and stiffening ribs are arranged in the form of at least three beams coming out of a single centre located on vertical axis of foundation, are arranged in the form of bent profiles and equipped with stiffening elements. Stiffening ribs are installed between lower and upper reinforcement grids, and elements of column structure connection to support part are arranged in the form of reinforcement leads.

EFFECT: reduced metal intensity and increased bearing capacity of foundation, simplified design.

2 cl, 4 dwg

Description

The invention relates to the field of construction, namely to slightly shallow foundations, and can be used in the construction of precast monolithic foundations for columns, supports, masts, supports of power lines, etc., erected on a natural or artificial foundation during the construction of buildings and structures for various purposes, including the installation of strip or column foundations.

Known foundation for the column according to the author's certificate of the USSR No. 541925, class. E02D 27/41, 1977. It includes a base plate and a shell with a glass. The glass in the shell is made through, and in the middle of the base plate coaxially with the through glass placed an additional glass.

But such a foundation does not allow the construction of buildings and structures of increased number of storeys, giving a large load on the base.

Known metal foundation shallow laying according to the patent for a utility model of the Russian Federation No. 56905, CL E02D 27/01, 2006, adopted by the applicant for the prototype. It contains metal elements and parts, a horizontal support element and vertical stiffeners fixed on it from above, supporting the support parts installed above for the structures of the aerial part of the building. The foundation is equipped with distribution elements for combining it in joint work with adjacent metal foundations of shallow laying. The cavities formed by its elements and details are concreted. Elements and parts are protected by a corrosion-resistant coating.

However, such a foundation has a complex, metal-saturated design, which does not give reason to assert the adequacy of its bearing capacity.

An object of the invention is to simplify the design, reduce metal consumption and increase the bearing capacity of a column under construction, a support, a mast, a support of a power line of a shallow foundation on a natural or artificial foundation, including the construction of strip or column foundations.

The problem is solved in that in the proposed technical solution, the support part is provided with lower and upper reinforcing meshes, and the stiffeners are placed in the form of at least three beams emerging from one center located on the vertical axis of the foundation, made in the form of bent profiles and equipped with stiffeners, and stiffeners are installed between the lower and upper reinforcing meshes, and the elements for connecting the column structure to the foundation part are made in the form of reinforcing conclusions.

In addition, the bent profile of the stiffener is made in the form of a sinusoid, and the stiffeners are installed along each stiffener in pairs from two sides.

Figure 1 shows a General view of the foundation under the column with an attached column;

figure 2 shows the placement of stiffeners in the foundation, view in plan;

figure 3 - stiffener in the form of a bent profile with stiffeners;

figure 4 shows the bent profile of the stiffener in the form of a sinusoid.

In figures 1 and 2, metal structures are conditionally shown as not flooded with concrete.

The base for the column contains a support part and a popliteal part. In the supporting part are located: the lower 1 and upper 2 reinforcing meshes and stiffeners 3, and in the sub-column part reinforcing leads 4 are installed, which serve as elements for connecting the construction of the column 5 to the foundation.

The stiffeners 3 are made in the form of a bent profile and are equipped with stiffeners 6, which are installed along each stiffener 3 in pairs from two sides, at least at the upper and lower ends.

The bent profile of the stiffener 3 can be represented by several types of curves, for example: in the form of a sinusoid, rectangle, trapezoid, triangle and other similar shapes. And the stiffening elements 6 can be made, for example, from reinforcing bars, rods, strips, angles or channels, and the like. The fastening of stiffeners 6 with stiffener 3 is carried out by, for example, 1 resistance welding, knitting wire, through clamps or other fasteners.

The ribs 3 are symmetrically placed in the form of at least three beams emerging from one center located on the vertical axis of the foundation, and are installed between the lower 1 and upper 2 reinforcing meshes on the rib in the direction from the vertical axis of the foundation. To minimize the bearing capacity of the foundation, at least three stiffeners 3 can be installed in the support part. But, depending on the degree of responsibility of the structure, the number of stiffeners 3 can be increased. This makes it possible to choose the number of stiffeners, in contrast to the prototype, where the construction of the supporting part is constant and the metal consumption, thereby simplifying the design and reducing the metal consumption of the structure, without reducing the bearing capacity.

The foundation is erected as follows.

First, prepare the site under the support part, exposing the formwork around the circumference, since the foundation is erected, for example, round, for example under a round column 5. To do this, lay the bottom reinforcing mesh 1 on the prepared site. Stiffeners 3 prepared in advance are installed on it, orienting them relative to the vertical axis of the foundation. The upper reinforcing mesh 2 is placed on top of the installed stiffening ribs 3. Then, the reinforcing meshes 1 and 2 are rigidly fastened with the reinforcing ribs 3 and the reinforcing leads 4 are vertically mounted for connecting the column structures 5.

Having mounted all of the above, pour the assembled structure with concrete. Upon reaching the formwork strength, the formwork is removed, and the foundation is ready for further installation work.

Using the proposed technical solution allowed us to simplify the design, reduce metal consumption and increase the bearing capacity of a column under construction, a support, a mast, a power support of a shallow foundation on a natural or artificial foundation, including the installation of strip or column foundations.

Claims (2)

1. The foundation containing the supporting part, the vertical stiffening ribs placed therein, forming a square metal frame, the sub-column part placed on the vertical stiffening ribs - a metal frame and provided with connecting elements of the column structure, characterized in that the supporting part is provided with lower and upper reinforcing meshes and stiffeners are placed in the form of at least three beams emerging from one center located on the vertical axis of the foundation, made in the form of bent profiles and equipped with with stiffening elements, and stiffening ribs are installed between the lower and upper reinforcing meshes, and the elements of connecting the column structure to the supporting part are made in the form of reinforcing conclusions. 2. The foundation according to claim 1, characterized in that the bent profile of the stiffener is made in the form of a sinusoid, and the stiffeners are installed along each stiffener in pairs from two sides.

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