SU1418416A1 - Pile - Google Patents

Abstract

The invention relates to the construction and can be used when building foundations in heaving soils. The aim of the invention is to increase the carrying capacity under the action of horizontal and moment loads. Sva includes a barrel, 3, made of adjacent one end plates and rigidly interconnected along the line of vertical shelves 1, located at the same angle relative to the plane of external loads, the shelves 1 in the upper part being joined by a vertical diaphragm 2, in which support socket 3. In this case, the shelves 1 can be additionally interconnected by a lower vertical diaphragm 4 placed at a depth exceeding the depth of the point of zero displacements. In this case, the lower diaphragm 4 can be placed at a depth exceeding the depth of seasonal freezing of the soil, and the space between the inner walls of the shelves 1 in this case is filled with elastic material that does not freeze with the soil. 2 3.p. f-ly, 4 ill. F (L 4 N4 SES NP; o:

Description

The invention relates to the construction and can be used in the construction in heaving soils of basement materials that perceive horizontal. Momentum loads, for example, of the load-bearing structures of buildings for storing agricultural products.

The aim of the invention is to increase the iHe carrying capacity under the action of horizontal and moment loads.

Figure 1 shows the WGS; view sbo; FIG. 2 is a view A-A in FIG. on lig.3 - view BB in Fig.1; figure 4 - AID B-b in figure 1.

The cva includes a trunk made by the mountaineers adjacent to each other by some mountaineers and rigidly connected between the vertical shelves ibix 1, located at the same angle relative to the plane of external loads, with the lolks 1 in the upper part being joined by a vertical diaphragm 2, in which The support nest-3 is located. In this case, the shelves 1 can be additionally joined together by a lower vertical diaphragm 4 placed at a depth exceeding the depth pa, the position of the point of zero displacements | (not shown). In order to increase resistance against frost heel forces, the lower diaphragm 4 can be placed at a depth exceeding the depth of seasonal freezing of the soil, and the space between the inner walls of the shelves 1 in this case is filled with elastic non-freezing material, for example polystyrene or Porisol (not shown).

When a pile of the proposed construction is immersed, a sufficiently developed soil compaction zone is formed over the entire Length of the trunk due to the significant volume of the leading part of the pile, including the lower diaphragm. The horizontal load is transmitted through the support seat in the upper diaphragm by external edges of the vertical shelves, as a result of which the entire volume of compacted soil is drawn into operation in the area of active repulsion, the most efficiently used are the friction and adhesion forces on the lateral surface of the shelves. At the same time, the pile can perceive significant moments of the load, since below the zero point of displacement

Jq

five

0 25 30, from about

d

0

five

} In the zone of passive resistance, the pressure on the ground is transmitted by the rectangular face of the lower diaphragm, which has a sufficiently large width.

The highest specific capacity of the pile is in heaving soils, where it is subject to additional impact due to the force of the frost heave. The constructive solution provides for anchoring the lower part to the layers of soil located outside the freezing depth. Taking into account that all the longitudinal sides of the trunk are vertical, only the shear forces of the frosty heel of the soil act on the pile, which are realized only on the outer edges of the piles, in the active resistance zone, since the internal cavity of the pile is filled with material that does not freeze with the soil.

As a result of the action of tangential forces, a reverse unloading moment arises, which helps to reduce the influence of frost heel forces and increases the resistance of the pile to the action of torque and horizontal loads.

Claims (3)

1.Sva, including a barrel symmetrical with respect to the longitudinal axis with a supporting nest in the upper part, characterized in that, in order to increase the carrying capacity under the action of horizontal and moment loads, the barrel is made of one end abutting one another and rigidly interconnected along each other the lines of the adjoining vertical shelves located at the same angle relative to the plane of external loads, the shelves in the upper part they are united by a vertical diaphragm, and the reference socket is located in it. one 2. Sva according to claim 15, characterized in that the shelves are additionally interconnected by a lower vertical diaphragm located at a depth that exceeds the depth of the location of the zero displacement point. 3. Sva according to claim 2, about aphids, so that, in order to increase resistance against frost forces, 3 | L 8, p. The first radiation diagram below shows the placement between the internal walls at a depth exceeding the depth of the shelves filled with elastic non-seasonal frost and 1 of the soil, and a material that freezes with the soil. FIG. 2 fizm