CN214783871U - Bark pile - Google Patents

Abstract

A bark pile comprises a pile body; and the surface of the pile head of the pile body is provided with a convex spiral structure. The utility model can improve the anti-pulling performance of the pile body, improve the efficiency of the pile body to be driven into the soil body and shorten the piling time; on the other hand, the strength of the pile head can be improved, and the concrete of the pile head can be protected from falling off or generating cracks.

Description

Bark pile

Technical Field

The utility model relates to a pile body, especially a bark stake for building foundation engineering.

Background

The concrete pile has the advantages of reliable pile body quality, economy, practicability, strong adaptability, environmental protection, convenient construction, short construction period, lower construction cost and the like, and is widely applied to engineering projects such as industrial and civil buildings, railways, ports and docks, water conservancy, bridges and the like. The bark pile belongs to one kind of concrete pile, and the pile body is usually made of concrete material, and then sets up the imitative bark material of one deck in the outside of concrete for the pile body becomes not so smooth, but becomes rough, and like this, the more rough between its surface and the soil body, area of contact is more, and frictional force is just stronger, makes the connection more firm, is difficult for producing not hard up.

On the one hand, current bark stake is the planar cylinder structure for both ends usually, and this kind of structure is piling the in-process, hardly squeezes into the soil layer, wastes time and energy. On the other hand, the pile head has lower strength, and the common concrete pile has the obvious defects of poor crack resistance, low rigidity and poor deformation performance. Particularly, the pile body needs to be driven into the soil layer by the pile head, and the pile head is easy to touch rocks and the like in the process of penetrating the soil layer, so that the concrete is cracked or falls off, and the foundation structure is not good in earthquake resistance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned not enough of prior art and providing a bark stake fast, efficient, intensity is big, firm in connection.

The technical scheme of the utility model is that: a bark pile comprises a pile body, wherein the front end of the pile body is provided with a pile head; and the surface of the pile head is provided with a convex spiral structure.

Further, the pile body is made of concrete, an imitated bark layer is arranged on the outer surface of the pile body, and patterns are arranged on the imitated bark layer.

Furthermore, a bulge or a pit is arranged on the pile body of the pile body.

Further, the pile head is spirally wound for 1-2.5 circles.

Further, the protruding height of spiral is 10~30 mm.

Furthermore, the screw pitch of the spiral is 10-50 mm.

Further, the front end of the pile head is in a circular truncated cone shape.

The utility model has the advantages that:

(1) the convex spiral structure is arranged on the surface of the pile head of the pile body, so that the adhesive force between the soil body and the pile head can be increased, and the connection is firmer; secondly, the efficiency of driving the pile body into the soil layer can be improved by arranging the spiral, and the pile driving time is shortened, namely the pile body can be driven into the soil layer quickly under the action of the spiral; thirdly, the strength of the pile head can be improved, namely the outward-protruding spiral structure can be used as a reinforcing rib, and due to the outward protrusion, most of acting force acts on the spiral structure, so that the concrete of the pile head can be prevented from generating cracks or falling off in the piling process;

(2) the front end of the pile head is designed to be in a round table shape, and compared with the existing bark pile which is cylindrical, the resistance of the soil layer can be reduced, so that the bark pile can penetrate into the soil layer quickly;

(3) the spiral protruding height is designed to be 10-30 mm, so that the driving speed can be guaranteed, and the concrete of the pile head can be prevented from generating cracks or falling off in the piling process.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As shown in fig. 1: a bark pile, which comprises a pile body 1; the front end of the pile body 1 is provided with a pile head 2, and the surface of the pile head 2 is provided with a convex spiral 3.

The scheme has the following advantages: the convex spiral structure is arranged on the surface of the pile head of the pile body, so that the adhesive force between the soil body and the pile head can be increased, and the connection is firmer; secondly, the efficiency of driving the pile body into the soil layer can be improved by arranging the spiral, and the pile driving time is shortened, namely the pile body can be driven into the soil layer quickly under the action of the spiral; and thirdly, the strength of the pile head can be improved, namely, the convex spiral structure can be seen as a reinforcing rib, and moreover, due to the convex spiral structure, the acting force is mostly applied to the spiral structure, so that the concrete of the pile head can be prevented from generating cracks or falling off in the piling process.

In this embodiment, the pile body is the concrete material, has advantages such as intensity is big, the durability is good, the low price. The imitative cortex 11 of surface redesign one deck of concrete because the surface of concrete is comparatively smooth, through setting up imitative cortex 11, can increase the frictional force between pile body and the foundation soil layer for be connected more firmly between pile body and the soil layer, improve the resistance to plucking performance of pile body greatly. The pile body of the embodiment can be of a solid structure or a hollow tubular structure. The shape of the pile body 1 is preferably a cylinder. In addition, the pile head is not provided with a tree-like bark layer.

In this embodiment, in order to further increase the friction between the pile body 1 and the foundation soil layer, a pattern 12, such as an annual ring pattern of bark, may be provided on the pile body of the pile body 1. Or, the pile body of the pile body is provided with a bulge or a pit. For example, a plurality of long-strip-shaped bulges are arranged on the pile body and symmetrically arranged, and the bulges are embedded into a soil layer to increase the adhesive force of the soil layer. Another example is: the pit is arranged on the pile body, so that the friction force can be increased. Or a combination of protrusions and depressions may be provided.

In the embodiment, the front end of the pile head 2 is in a round table shape, and compared with the existing bark piles which are all cylindrical, the resistance of a soil layer can be reduced, so that the bark piles can penetrate into the soil layer quickly; or quickly through the earth to the rock strata and can also be quickly embedded in the rock strata.

In the embodiment, the spiral 3 winds the pile head for 1-2.5 circles. The number of turns of the spiral 3 can be determined according to the length of the pile head 2, and if the length is longer, more turns can be wound, and if the length is shorter, fewer turns can be wound. Preferably, the spiral 3 is wound around the pile head in a circular truncated cone shape for two circles, so that materials can be saved, and the driving speed can be guaranteed. The material of spiral 3 is concrete or metal material, and the preferred metal material of this embodiment, such as stainless steel can prevent that spiral 3 can not produce the crack or drop in the process of driving into, guarantees rigidity.

In the present embodiment, the pitch of the screw 3 is 10 to 50mm, preferably 30mm, and if the pitch is too large, the driving speed is reduced, and if the pitch is too small, the material cost is increased.

In this embodiment, the protruding height of the spiral 3 is 10 to 30mm, preferably 25 mm. If the height is too small, the driving speed is affected, and the outward protruding spiral 3 can prevent the concrete of the pile head from cracking or falling off in the piling process, and if the height is too small, the mechanical property of the concrete of the pile head is easily affected. If the height is too large, the strength is also affected, and the material cost is high.

The working principle of the embodiment is as follows: the front end of the pile head 2 is driven and hit by the pile driving equipment to drill into the soil layer, wherein the pile head 2 drills into the soil layer firstly, namely the pile head quickly drills into the soil layer under the drive of the spiral 3 to reach a target position, and the upper part of the pile body 1 is fixed by pouring concrete. And the soil layer is firmly combined with the patterns, the bulges or the pits on the pile body, so that the soil layer is not easy to loosen.

In conclusion, the embodiment can improve the efficiency of the pile body in driving into the soil body and shorten the piling time; on the other hand, the strength of the pile head can be improved, and the concrete of the pile head can be protected from falling off or generating cracks.

Claims (6)

1. A bark pile comprises a pile body, wherein the front end of the pile body is provided with a pile head; the pile is characterized in that the surface of the pile head is provided with a convex spiral structure; the pile body is made of concrete, the outer surface of the pile body is provided with an imitated bark layer, and the imitated bark layer is provided with patterns.

2. The bark pile as claimed in claim 1, wherein the pile body has a protrusion or a recess on its shaft.

3. The bark pile as claimed in claim 1 or 2, wherein the spiral is wound around the pile head for 1-2.5 turns.

4. The bark pile as claimed in claim 1 or 2, wherein the spiral has a projected height of 10 to 30 mm.

5. The bark pile as claimed in claim 1 or claim 2, wherein the helix has a pitch of 10 to 50 mm.

6. The bark pile as claimed in claim 1 or claim 2, wherein the front end of the pile head is frusto-conical.

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