SU912837A1 - Pile foundation - Google Patents

Description

(54) PILED BASE

one

The invention relates to the construction and can be used as the foundation of industrial and civil frame buildings with large vertical and horizontal loads in difficult engineering and geological conditions, including unevenly squeezed. Wet and structurally unstable soils, loess pro-sedimentary soils, underworking areas in areas prone to karst phenomena.

There is a well-known pile foundation consisting of wide curvature located along the forming surface and inclined piles with a broadened heel at the same angle, with the piles of each even row being inclined in the opposite direction relative to the piles of an odd row and the width of every two adjacent even piles. and odd rows are joined together to form a single broadened heel for two piles 1.

The disadvantages of such a pile foundation are the complexity of the design and the impossibility of changing it under the frame buildings. In addition, this foundation is not reliable enough when changing

on uneven compressible soils and in other difficult ground conditions.

The closest technical solutions. To the invention to the technical essence and the achieved result is a pile foundation, including a grillage and a bush inclined, united in the lower part by the general broadening of piles 2.

However, this foundation is not sufficiently reliable when working in the soil conditions, and also it lacks the ability to exist. In addition, due to the device of the massive grillage, this foundation and has a higher material and bone.

The purpose of the invention is to increase the carrying capacity due to redistribution of the load by the elements of the foundation.

The unallocated goal is achieved by the fact that the pile foundation, including the grillage and inclined bush, combined in the lower

Claims (2)

20 parts by the general piling extension, provided with additional grillage and additional bush. Inclined, combined in the lower part with the general broadening of piles, and the grillage unites the upper parts of the adjacent piles of adjacent bushes. FIG. 1 shows a pile foundation, plan; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 1. The foundation includes inclined pile bushes 1, combined within each bush with common broadening 2 and 3, grillage 4, each of which joins the tops of adjacent 1 pile of adjacent bushes and is located along the grid of columns 5 of the building and structure. Columns 5 are rigidly embedded in grillages 4. The erection of a pile foundation is carried out as follows. With the help of the drilling unit, inclined wells are drilled and drillings are drilled along the string grid and diagonal m. Rebar cages (not shown) are installed in the drilled wells and the wells are filled with concrete, resulting in a core structure consisting of piles 1 , at the ends of which common widenings 2 and 3 are made. The upper ends of the piles 1 of adjacent bushes are connected with reinforced concrete grillage 4, in the central part of which column 5 is installed. In the proposed pile foundation it improves static work due to the formation of a spatial structural structure from piles. The pile foundation has the following advantages: the reliability of the core structural system is ensured; material consumption is reduced in comparison with the known pile foundations: concrete up to 15% and steel up to 10%; the bearing capacity of the foundation is increased by vertical and horizontal loads due to the redistribution of the load between the foundation elements. Claim of the invention Pile foundation, including a grillage and a bush of inclined, combined in the lower part with a general broadening of piles, characterized in that, in order to increase the bearing capacity due to the redistribution and load between the foundation elements, it is equipped with additional grillages and additional bushings of inclined united in the lower part by the common piling extension, each grillage uniting the upper parts of the piles of adjacent bushes facing one another. Sources of information taken into account in the examination. USSR Author's Certificate No. 549548, cl. E 02 D, 1974. 2. USSR author's certificate in application L 2697370 / 29-33. cl. E 02 D 7/00, 1978.