ES1261219U - Precast concrete pile. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Precast concrete pile, characterized in that it is made from a vertically elongated concrete prismatic body (1), with a length between 5 and 12 meters, with an isoscelic trapezoidal plan, tending to the square, in which In proximity to its four vertices, four steel bars (2) are embedded longitudinally, a metal structure reinforced by a transverse reinforcement, consisting of a steel spiral (3) that is wound in the reinforcement around the four steel bars (2) longitudinal from its upper extremity to its lower extremity, with the particularity that the pile includes a central core (4), based on a steel bar, which is embedded longitudinally in the central area of the pile, exclusively affecting approximately the lower third of its length, central core (4) that extends outside the pile, defining a stem (5) determining a tongue and groove coupling means attached to other types of piles. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Precast concrete pile

Technical sector

The present invention refers to a precast concrete pile, intended for use in small residential-type works (chalets, small homes or second residences, small industrial or storage warehouses, etc.), a pile of the type that is coupled or they drive by tongue and groove to a lower pile.

The invention focuses exclusively on the top end module or pile.

The object of the invention is to provide a perfectly functional pile for the applications described above, easy to produce, with low cost and high performance.

Background of the invention

In large-scale constructions such as buildings with a large number of floors and the like, it is common to use bulky precast concrete piles, capable of being stacked and vertically coupled to each other.

In this sense, we can cite patent US 4735527, which describes a pile for construction based on reinforced concrete throughout its length, which has a length of one meter, which makes them very versatile, but nevertheless very expensive. to produce and with very low yields.

These piles, as has just been said, are assembled along their entire length by a single central steel bar.

This means, in practice, concrete breakage, since reinforced concrete resists installation much better than unreinforced or weakly reinforced concrete.

Precisely for this reason, said piles did not exceed one meter in length, since if they were longer, they would be damaged during the commissioning process.

Finally, it is worth mentioning the fact that in the tongue-and-groove coupling between this type of piles it has been foreseen that the females are filled with epoxy resin, while the male presents a high-density plastic insert, using layers of plastic material between sections to avoid concrete-concrete contact, all of which complicates and makes the mounting system more expensive.

Explanation of the invention

The precast concrete pile that is advocated fully satisfactorily solves the aforementioned problems, based on a simple but effective solution.

For this, and more specifically, the pile of the invention is constituted from an elongated prismatic body, with a length between 5 and 12 meters, based on reinforced concrete, with a trapezoidal-isoscelic base, tending to the square, in which four steel bars are embedded longitudinally in correspondence with the area near its four corners, a metallic structure that is reinforced by a transverse reinforcement, constituted by a spiral of steel that is wound in the reinforcement around the four longitudinal bars.

According to another of the characteristics of the invention, it has been envisaged that centered, and exclusively affecting approximately one third of the lower area of the pile, a central steel core is established, materialized in a steel bar that partially protrudes from the concrete structure, determining a male-like stem intended to be coupled to a socket in which the upper end of the pile or lower module is finished, this pile not being the object of the present invention.

Unlike other coupling systems between existing piles, the pile or upper module of the present invention does not require the use of epoxy resins between the male and female element in the coupling, nor does it require coatings for said male element.

In parallel, and to simplify the assembly operation, a perforated asphalt sheet will be installed between the lower and upper faces of the coupled piles, which protects the concrete-concrete contact, thus avoiding having to apply mesh impregnated in resin and sand as was traditional.

In this way, an ideal pile for simple constructions is achieved, easy to put into work without risk of breakage for it and without the need for complicated mechanical means for said implantation.

Brief description of the drawings

To complement the description that is going to be made below and with the aim of helping a better understanding of the characteristics of the invention, according to a preferred example of a practical embodiment thereof, a set of drawings is attached as an integral part of said description. where, with an illustrative and non-limiting nature, the following has been represented:

Figure 1.- Shows an elevation view in longitudinal section of a precast concrete pile made in accordance with the object of the present invention.

Figure 2.- Shows a cross-sectional view of the pile of the previous figure.

Figure 3.- Shows a longitudinal section detail of the lower area of the pile, duly coupled by tongue and groove to a lower pile of another type.

Preferred embodiment of the invention

In view of the figures outlined, it can be seen how the precast concrete pile of the invention is constituted from a vertically elongated concrete prismatic body (1), with a length between 5 and 12 meters, with a trapezoidal plan isoscelica, tending to the square, in which four steel bars (2) are embedded longitudinally in proximity to its four vertices, a metallic structure that is reinforced by a transverse reinforcement, constituted by a spiral (3) of steel that is wound in the assembly around the four longitudinal steel bars (2) from its upper end to its lower end.

As can be seen in Figures 1 and 3, the pile is complemented by a central core (4), based on a larger diameter steel bar, which is embedded longitudinally in the central area of the pile, exclusively affecting approximately to the lower third of its length, central core (4) that extends externally to the pile determining a rod (5) as a male destined to be coupled in a bushing (6) in which the upper end of the pile or lower module ( 7), visible in figure 3, and which, as said, is not the object of the present invention.

According to what is shown in said figure 3, the coupling between piles is direct, without the need to use epoxy resins between the male and female element in the coupling, only using an asphalt sheet perforated for this purpose as protection.

Finally, it only remains to point out that the pile thus described may incorporate, in correspondence with its upper and lower ends, a small external metallic envelope (8-8 '), which protects these areas most exposed to blows.

Claims (2)

1. Precast concrete pile, characterized in that it is constituted from a vertically elongated concrete prismatic body (1), with a length between 5 and 12 meters, with an isoscelic trapezoidal plan, tending to the square, in which In proximity to its four vertices, four steel bars (2) are embedded longitudinally, a metallic structure reinforced by a transverse reinforcement, constituted by a steel spiral (3) that is wound in the reinforcement around the four steel bars (2) longitudinal from its upper extremity to its lower extremity, with the particularity that the pile includes a central core (4), based on a steel bar, which is embedded longitudinally in the central area of the pile, exclusively affecting approximately the lower third of its length, central core (4) that extends externally to the pile defining a stem (5) determining a tongue and groove coupling means attached to other types of piles. 2. Precast concrete pile, according to claim 1, characterized in that in correspondence with its upper and lower ends it includes an external metal envelope (8-8 ').