Steel reinforced concrete square pile

Abstract

The utility model discloses a steel reinforced concrete square pile which comprises a plurality of square pile units connected in sequence, each square pile unit comprises a concrete layer, a reinforcement cage, an upper end plate and a lower end plate, the reinforcement cage comprises a plurality of main reinforcements, the upper end plate and the lower end plate are respectively provided with a plurality of through holes, one ends of the main reinforcements penetrate through the through holes and are welded with the upper end plate or the lower end plate, and the other ends of the main reinforcements penetrate through the concrete layers. The main reinforcements penetrate through the through holes and then are provided with threaded connection sections, the concrete layer wraps the reinforcement cage, inserting pipes are arranged in the reinforcement cage, the upper ends of the inserting pipes are fixedly connected with the upper end plate, inserting openings communicated with the inserting pipes are formed in the upper end plate, and inserting rods are fixedly connected to the lower end plate. According to the steel reinforced concrete square pile, the connecting position of the upper pipe pile and the lower pipe pile is connected through the steel inserting-connecting rod and the inserting-connecting pipe, the anti-shearing performance of the connecting position is improved, and meanwhile the guiding and positioning effects can be achieved when the upper pipe pile and the lower pipe pile are connected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to concrete square pile technical field, concretely relates to steel reinforced concrete square pile. BACKGROUND

[0002] Concrete square pile belongs to one kind of concrete pipe pile, and the whole cross section is square. Similar to other concrete pipe piles, the overall structure of the concrete square pile also comprises a concrete layer and a reinforcement cage located inside the concrete layer, the two ends of the reinforcement cage are respectively provided with end plates, and the end plates are provided with threaded connection sections for the butt joint of the upper and lower square piles. The existing concrete square pile is connected by a connecting piece between the upper and lower concrete square piles during use, and this connection method has the advantages of being quick and convenient. However, the shear resistance of the concrete square pile with this structure is poor, and the upper and lower square piles are prone to misalignment during pile driving. During long-term use, the square pile connection is also prone to disconnection and misalignment due to side soil extrusion. SUMMARY

[0003] To solve the above technical problems, the utility model adopts the technical scheme of: a steel reinforced concrete square pile comprises a plurality of sequentially connected square pile units, each square pile unit comprises a concrete layer, a reinforcement cage, an upper end plate and a lower end plate, the reinforcement cage comprises a plurality of main reinforcement, the main reinforcement is arranged in a circular column shape, and a spiral reinforcement is wound on the circular column-shaped reinforcement frame; the spiral reinforcement is connected to the main reinforcement by welding or binding with iron wire; the upper end plate and the lower end plate are respectively provided with a plurality of through holes for the main reinforcement to pass through; one end of the main reinforcement passes through the through hole and is welded to the upper end plate or the lower end plate; the main reinforcement is provided with a threaded connection section after passing through the through hole; the concrete layer wraps the reinforcement cage; the concrete layer is located between the upper end plate and the lower end plate; the reinforcement cage is provided with a plug-in pipe inside; the upper end of the plug-in pipe is fixedly connected to the upper end plate; the upper end plate is provided with a plug-in port communicating with the plug-in pipe; the lower end plate is fixedly connected with a plug-in rod corresponding to the plug-in pipe; the plug-in rod of the previous square pile unit is inserted into the plug-in pipe of the next square pile unit; and the threaded connection section at the lower end of the previous square pile unit is connected to the threaded connection section at the upper end of the next square pile unit by a connecting piece.

[0004] As a preferred technical scheme, the lower end of the plug-in rod has a tapered head with a gradually decreasing diameter.

[0005] As a preferred technical scheme, the utility model further comprises a pile driving guide head, the middle part of the pile driving guide head is provided with a central hole for the plug-in rod to pass through, the periphery of the pile driving guide head is provided with a plurality of side holes for the threaded connection sections to be inserted, and the diameter of the pile driving guide head gradually decreases from top to bottom.

[0006] Preferably, the pile guide head is made of wood, ceramic or degradable plastic, the insertion rod and the insertion tube are made of steel respectively, the insertion rod is welded with the lower end plate, and the insertion tube is welded with the upper end plate.

[0007] Preferably, the connecting piece comprises an upper connecting tube and a lower connecting tube, the lower connecting tube and the upper connecting tube are rotatably connected, and the inner thread is arranged in the upper connecting tube and the lower connecting tube respectively.

[0008] The steel reinforced concrete square pile has the advantages that the steel insertion rod and the insertion tube are connected at the connecting position of the upper and lower pipe piles, the shear resistance of the connecting position is improved, and the upper and lower pipe piles can be guided and positioned during the connection. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 is a structural schematic view of the utility model;

[0010] Fig. 2 is a sectional structural schematic view of the utility model. DETAILED DESCRIPTION

[0011] The technical solutions of the utility model will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0012] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0013] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0014] As Figs. 1-2 shown, the steel reinforced concrete square pile comprises a plurality of sequentially connected square pile units, the square pile unit comprises a concrete layer, a reinforcement cage, an upper end plate 1 and a lower end plate 2, the reinforcement cage comprises a plurality of main reinforcement 3, the main reinforcement 3 is arranged in a circular column shape, and a spiral reinforcement 4 is wound on the circular column-shaped reinforcement frame, the spiral reinforcement 4 is welded or connected by iron wire with the main reinforcement 3, the upper end plate 1 and the lower end plate 2 are respectively provided with a plurality of through holes 5 for the one end of the main reinforcement 3 to pass through, the one end of the main reinforcement 3 passes through the through hole 5 and is welded with the upper end plate 1 or the lower end plate 2, and a threaded connection section 6 is arranged on the main reinforcement 3 after passing through the through hole 5, the concrete layer wraps the reinforcement cage, and the concrete layer is located between the upper end plate 1 and the lower end plate 2, an insertion pipe 7 is arranged in the interior of the reinforcement cage, the upper end of the insertion pipe 7 is fixedly connected with the upper end plate 1, the upper end of the upper end plate 1 is provided with an insertion port 8 communicating with the insertion pipe 7, the lower end plate 2 is fixedly connected with an insertion rod 9, the insertion rod 9 corresponds to the insertion pipe 7, the insertion rod 9 of the upper square pile unit is inserted into the insertion pipe 7 of the lower square pile unit, and the threaded connection section 6 at the lower end of the upper square pile unit is connected with the threaded connection section 6 at the upper end of the lower square pile unit through a connecting piece. The cooperation of the insertion rod 9 and the insertion pipe 7 between the upper and lower square pile units improves the shear resistance of the connection position, and prevents the bending and dislocation problem from occurring during the pile driving process.

[0015] Further, the lower end of the insertion rod 9 has a tapered head 10 with a gradually decreasing diameter. The tapered head 10 guides the insertion of the insertion rod 9 into the insertion pipe 7.

[0016] Further, it further comprises a pile guiding head 11, the middle part of the pile guiding head 11 is provided with a central hole 12 for the insertion rod 9 to pass through, the periphery of the pile guiding head 11 is provided with a plurality of side holes 13 for the threaded connection section 6 to insert, and the diameter of the pile guiding head 11 gradually decreases from top to bottom. The pile guiding head 11 reduces the resistance during the pile driving process.

[0017] Further, the pile guiding head 11 is made of wood, the insertion rod 9 and the insertion pipe 7 are respectively made of steel, the insertion rod 9 is welded with the lower end plate 2, and the insertion pipe 7 is welded with the upper end plate 1. The pile guiding head 11 is installed at the lowermost end of the square pile at the construction site, and plays a role in reducing the resistance during the pile driving process. The cooperation of the steel insertion rod 9 and the insertion pipe 7 improves the shear resistance of the connection position of the square pile.

[0018] Further, the connecting piece comprises an upper connecting pipe 14 and a lower connecting pipe 15, the lower connecting pipe 15 and the upper connecting pipe 14 are rotatably connected, and the inner part of the upper connecting pipe 14 and the inner part of the lower connecting pipe 15 are respectively provided with internal threads. By rotating the upper connecting pipe 14 and the lower connecting pipe 15, the threaded connecting section 6 at the lower end of the upper pile is screwed into the upper connecting pipe 14 and is threadedly connected with the upper connecting pipe 14, and the threaded connecting section 6 at the upper end of the lower pile is screwed into the lower connecting pipe 15 and is threadedly connected with the lower connecting pipe 15. The connecting piece can also adopt other existing pipe pile connecting pieces.

[0019] It is worth mentioning that the connecting piece and other technical features involved in the utility model patent application should be regarded as prior art, and the specific structure, working principle and possible control mode and spatial arrangement mode of these technical features can be selected by using the conventional selection in the field, and should not be regarded as the invention point of the utility model patent, and the utility model patent will not be further expanded and described in detail.

[0020] The above describes the preferred embodiments of the utility model in detail, and it should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model, therefore, all the technical solutions obtained by logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the utility model should be within the protection scope determined by the claims.

Claims

1. Steel reinforced concrete square piles, characterized in that: The present invention relates to a square pile unit according to claim 1, wherein the square pile unit comprises a concrete layer, a reinforcement cage, an upper end plate and a lower end plate, the reinforcement cage comprises a plurality of main reinforcements, the main reinforcements are arranged in a row around the circumference to form a cylindrical reinforcement frame, spiral reinforcements are wrapped around the cylindrical reinforcement frame, the spiral reinforcements are welded or connected to the main reinforcements by wire binding, the upper end plate and the lower end plate are respectively provided with a plurality of through holes for one end of the main reinforcement to pass through, one end of the main reinforcement passes through the through hole and is welded to the upper end plate or the lower end plate, and a threaded connection section is provided after the main reinforcement passes through the through hole, the concrete layer wraps the reinforcement cage, the concrete layer is located between the upper end plate and the lower end plate, a plug-in pipe is provided inside the reinforcement cage, the upper end of the plug-in pipe is fixedly connected to the upper end plate, and a plug-in interface for connecting the plug-in pipe is provided on the upper end plate, and a plug-in rod is fixedly connected to the lower end plate, the plug-in rod corresponds to the plug-in pipe, the plug-in rod of the upper square pile unit is inserted into the plug-in pipe of the next square pile unit, and the threaded connection section at the lower end of the upper square pile unit is connected to the threaded connection section at the upper end of the next square pile unit through a connecting piece.

2. The steel reinforced concrete square pile according to claim 1, characterized in that: The lower end of the connecting rod is provided with a tapered head with a gradually decreasing diameter.

3. The steel reinforced concrete square pile according to claim 1, characterized in that: It also includes a pile driving guide head, a central hole for the plug rod to pass through is provided in the middle of the pile driving guide head, and a plurality of side holes for the threaded connection sections to be inserted are provided around the pile driving guide head. The diameter of the pile driving guide head gradually decreases from top to bottom.

4. The steel reinforced concrete square pile according to claim 3, characterized in that: The piling guide head is made of wood, ceramics or degradable plastics, the plug rod and the plug tube are respectively made of steel, the plug rod is welded to the lower end plate, and the plug tube is welded to the upper end plate.

5. The steel reinforced concrete square pile according to claim 1, wherein: The connecting piece includes an upper connecting pipe and a lower connecting pipe. The lower connecting pipe and the upper connecting pipe are rotatably connected. The interiors of the upper connecting pipe and the lower connecting pipe are respectively provided with internal threads.

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