Pile

 

(57) Abstract:

Use: in the construction during the construction of pile foundations in soils of average and above average density. The essence of the invention: piles having a barrel flange cross-section, shelves and wall tee made with their lower ends in divergent levels, and the leading section of the barrel is pointed, and the difference of levels lower ends of the shelves and walls defined installed dependence on the distance between the outer flange edges of the tee. Technical result provided by the invention, is to facilitate pile of I-beam section in the soil and increase the strength of its fixation in the soil, as well as improving the performance of the immersion process. 3 C.p. f-crystals, 6 ill.

The invention relates to the construction, in particular, to the design of piles in the open profile.

Famous tongue-and-groove pile containing barrel of I-beam section, shelves and walls which are executed with the location of their lower ends in divergent levels (US, patent, 3333429, E 02 D 5/28, 1967).

However, the known pile is intended only for the perception of horizontal static loads and has ogran the ox I-beam cross-section (GB, patent 1295304, E 02 D 5/72, 1972).

Known pile provided with a Shoe, made in the form of a lattice, fixed on the lower end of the stem, as well as several bars, fastened at intervals along the length of the barrel from the lower end, which creates significant additional resistance when immersed her into the ground.

These particular structural embodiment famous piles limit its scope only weak soils.

The objective of the invention is to facilitate pile while ensuring the strength of its fixation in the soil and increasing productivity of the immersion process.

The problem is solved due to the fact that the piles, including the stem h of the cross-section, shelves and wall tee made with their lower ends in divergent levels, and the leading section of the barrel is pointed, and the value of l the difference between the levels of the lower ends of the shelves and the wall defined by dependence

l = (0,30,5)a,

where a is the distance between the outer flange edges of the tee. When this wall I-beams may be located below the shelves and pointed in a plane coincident with the plane of the wall, or shelf beam located below stanich features is that when the relief pile into the ground is provided by the strength of its attachment improves the performance and manufacturability of the process of construction. The effect is achieved by alternately sequential implementation process in the soil of the Central and peripheral parts of the pile shaft with an interval defined above dependence obtained experimentally.

In Fig. 1 shows the design of piles with leading Central part of Fig. 2 is a cross section along a-a in Fig. 1, in Fig. 3 is a side view in Fig. 1, in Fig. 4 - option piles with leading peripheral parts of Fig. 5 - section b-B in Fig. 4, in Fig. 6 is a side view in Fig. 4. The pile shaft I-beam consists of shelves 1 and wall 2 with pointed lower ends 3 and 4. The lower ends of the shelves and the walls of the I-beams are divergent levels, and the leading section of the trunk is made sharp. The difference of levels lower ends 3 shelves 1 and the bottom edge 4 of the wall defined by dependence

l = (0,30,5)a,

where a is the distance between the outer flange edges of the tee. The bottom end 4 of the wall 2 can be performed leading and pointed (see Fig. 1). The lower ends 3 shelves 1 can be performed leading and pointed (see Fig. is sharpened (see Fig. 1 and 3).

When submerged piles in the ground leading tapered section of the shaft 4 penetrates into the soil, it violates the natural structure and all following plots 3 meet much less resistance. In addition, the specific pressure on the ground ends of the stepped sections of the trunk increases significantly due to the reduction of the contact area, which facilitates the immersion piles. In this case, the effect of destruction of rocks on the bottom of the drill hole step bit or drilling crown, when the stepped configuration of the end face of the bit or crowns causes an increase in stress concentration in destroying the breed and helps increase the speed of its implementation. However, acuminate areas 3 of the trunk, which penetrate into the soil after the leading section 4, wring out the ground to the sides, forming around the trunk reinforced area, increasing the strength of its entrapment in the soil and load bearing capacity. The difference between the levels of the lower ends of the shelves and the walls of the I-beams forming the pile shaft, take depending on the soil type (sandy 0.3 magnitude of the distance between outer edges of the shelves I-beam, for clay - 0,5).

The use of piles of this design with ispolnenie strength embedded in the soil due to the optimum combination of constructive and geometrical parameters of the lower end of the stem, providing favorable conditions for diving and anchoring piles in the ground.

The invention can be effectively used in the construction of various structures in soils of average and above-density, in particular, the supports of power transmission lines and equipment of substations in compacted sandy soils of the North of Western Siberia.

1. Pile, including the stem h of the cross-section, wherein the shelf and the wall of the tee is made with the location of their lower ends in divergent levels, and the leading section of the barrel is pointed, and the value of l the difference between the levels of the lower ends of the shelves and the wall defined by dependence

l = (0,3 0,5)a ,

where a is the distance between the outer flange edges of the tee.

2. Pile on p. 1, characterized in that the wall of the tee below the shelves and pointed at least in a plane coincident with the plane of the wall.

3. Pile on p. 1, characterized in that the shelf beam is located below the wall and pointed at least in a plane coincident with the plane of the shelves.

4. Pile on p. 1, characterized in that the lower ends of the walls and shelves of the I-beam, located at different levels, sharpened.

 

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