SU1663123A1 - Arrangement of piles foundations - Google Patents

Abstract

The invention relates to the construction, in particular to the construction of pile foundations, mainly in subsiding soils with a second type of soil conditions on subsidence, as well as other types of structurally unstable soils. The purpose of the invention is to increase the carrying capacity and reliability. The pile drive, cutting through the subsidence of the soil, resting in a strong, low-deformable base, includes a trunk with an upper part, with concave sides and a lower part. The cross section of the upper part of the trunk is a quadrilateral with concave sides, which is inscribed in a square section of the lower part of the trunk. The lateral cavities formed by the concave sides and walls of the well are filled with balls in the lower part, and in the upper part, with prefabricated elements in the form of segments. On the concave side surfaces of the pile there are wedge-shaped guide rails, which extend downward along their side surfaces, diverging from the pile axis, the base of the runners fits into the cross section of the lower part of the pile shaft, and the prefabricated elements in the form of segments have in cross section grooves corresponding to the profile of the runners. 10 il.

Description

The invention relates to the construction, in particular, to the construction of foundations, mainly in subsiding soils with a second type of soil conditions on subsidence, as well as other types of structurally unstable soils.

The purpose of the invention is to increase the carrying capacity and reliability.

Figure 1 shows a driving pile, immersed in the ground, general view; figure 2 - section aa in Fig, 1; on fig.Z - section BB in figure 1; figure 4 is a section bb In figure 1; Fig. 5 shows a pile structure, a general view; on

6 is a view of the GG in figure 5; in fig. 7 is a view of DD to FIG. Fig.8 is a view of the EE of Fig 5; on fi g. 9 - view of Ж-Ж in figure 5; in fig. 10 is a view of the AND-fig in FIG. 7.

The pile drive, cutting through the subsurface soil 1 and resting in a strong, undeformable base 2, includes a barrel with an upper part 3 with concave sides 4 and a lower part 5. The section of the upper part 3 of the barrel is a quadrangle with concave sides 4, which is inscribed in square section 6 of the lower part 5 of the trunk. The lateral cavities 7, formed in concave with

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The sides 4 and the walls of the well are filled in the lower part with balls 8, and in the upper part with prefabricated elements in the form of segments 9 (made of concrete or fiberglass).

On the concave sides 4 of the pile shaft there are wedge-shaped guide rails 10, which extend downward along their side surfaces, discharging from the pile axis, the base of the runners fits into the cross section of the lower part 5 of the pile shaft, and the prefabricated elements in the form of segments 9 have the cross section of the guide grooves 11, corresponding to the toffered runners 10.

The installation of the pile is carried out as follows.

The sva is submerged through the entire subsidence soil 1, and with its tip rests on a solid low-deformable base 2. Due to the concave side surfaces 4, a cavity 7 is formed in the upper part of the pile 3. This cavity is filled with balls 8, and then with prefabricated elements 9 in the form of segments . When the soil is soaked, a subsidence arises, the soil 1 begins to move down, dragging the balls 8 and the prefabricated elements in the form of segments 9 along the runners 10 down. Segments 9 will increase the pressure on the balls 8. The balls 8, in contact with the prefabricated elements in the form of segments 9, will ensure uniform movement of the segments 9 without any distortions.

At the same time, the spherical surface will ensure their slipping out from under the segments 9 and the subsequent penetration of the balls 8 into the soil surrounding the pile.

In the process of subsidence of the soil, the latter is soaked, becomes sticky, which causes sticking of the soil mass on the surface, having a significant contact area, and an increase in the mass of the soil that loaded the pile. The ball shape minimizes the contact surface and the size of the primer-like soil due to adhesion and will ensure the penetration of the balls 8 into the surrounding subsiding soil 1 in the zone of contact of the low-deformable soil 2 and subsiding 1. At the same time, prefabricated elements of the form of segments 9 will crawl

on the skid m 10 a below and below on an inclined surface: the skid 10 from the top of the upper part of the pile 3 to its base, was removed from the concave surface 4

the pile shaft, and create an additional cavity 7, penetrate the soil surrounding the pile, compact it and form an additional broadening at the interface of the low-deformable soil 2 and subsiding

soil 1. Thus, an additional compacted soil core with a broadening will be formed, which, if necessary, can later be filled with an incompressible material, providing

the connection between the balls 8, the prefabricated elements in the form of segments 9 and the surface of the pile and the ground in contact with the pile.

As a result, the effect of negative friction on the

pile due to the presence of concave side surfaces, uniform movement of prefabricated elements in the form of segments 9 and a scarf 8 with a small contact surface and low resistance

grenia.

Claims (1)

Invention Formula A hammerhead, comprising a trunk consisting of two parts, the upper section of which is formed by a "figure, is inscribed in a figure that forms a section of its lower part, characterized in that, in order to increase the carrying capacity and reliability of operation, the upper part of the trunk has a section in the form of a quadrangle with concave sides, on the concave inner surfaces there are made wedge-shaped guides of the runner extending to the base of the upper part of the trunk, and the cross section of the runners at the base forms a figure inscribed in a figure, bonding section of the lower part of the pile bore, and a cavity formed by the well walls and the concave surfaces of the upper part of the pile shaft are filled with balls in the lower part, and at the top are prefabricated elements in the form of segments with grooves whose shape corresponds to the profile of the guide runners. figure 1 Aa five Schig.4  //////////////, At //// L  / s $$$$$$$$$$ TO;  “A “A : " iT $ 7 -one Editor L. Veselovska Compiled by V.Gonik Tehred M. Morgental FIG. ten Proofreader M.Kucher va