KR100314779B1 - Concrete-pile construction method - Google Patents

Abstract

PURPOSE: A process for treating head part of a concrete base pile is provided to solve cracking problem caused during arrangement of the head part when the concrete base pile is inserted under a ground to produce a concrete foundation structure. CONSTITUTION: The process comprises several steps of cutting(A) upper end of the base pile(1) to obtain same length of protruded parts of the base piles after completing insertion state of the piles; setting(B) additional pile(2) having joint reinforcing bar(2a) to cover the base pile; fixing(C) the additional pile by securing together the base and the additional piles by introducing a base concrete(4) from top portion of the base ground(3) up to top side of the additional pile; and forming(D) a foundation by introducing another base concrete(6) while arranging a base reinforcing bar(5) by using the joint bar(2a).

Description

Tofu treatment method of concrete foundation pile {CONCRETE-PILE CONSTRUCTION METHOD}

The present invention relates to a tofu treatment method of concrete foundation piles to form a concrete foundation after the ground penetration of the concrete foundation piles, and in detail, the upper surface is cut off after the concrete foundation piles are inserted into the ground, and the outer pile is used. It relates to a tofu treatment method to organize the tofu to form a base.

The concrete foundation pile is used to transfer the weight of the structure to the ground, and in general, it is used to drive the rock pile to the rock layer of the ground by striking or injecting the concrete pile after completion of the foundation breakthrough. Constructed in series with the foundation.

The head arranging of the foundation pile is for connecting the concrete foundation and the foundation pile to maintain structural continuity. As shown in FIG. 2, the reinforcing bar is removed in the concrete foundation by removing the concrete part of the pile head and exposing the internal reinforcing bars. This is to connect the reinforcing bar of the foundation file and to make it continuous.

In general, the claws are attached to the fork-lane to peel off the concrete covering that surrounds the rebar, cut off the excessively exposed rebar, and the rebar is corrected by hand.

Therefore, in the process of removing concrete cladding, cracks, which are the main causes of the reduction of pile compressive strength, occur, and many additional operations such as grinder cutting of concrete piles, cutting and straightening of reinforcing steel, and stopping of concrete upper surfaces must be performed. Not only does it require a lot of manpower, but there is also a high risk of various safety accidents during the work process, and in case of excessive cracking during the head cleanup process, the file must be removed. If the base pile projecting part must be removed, it takes much effort due to the concrete crushing, generates a large amount of construction waste, and wastes expensive foundation piles.

The present invention was devised to solve the problems of the existing concrete tofu cleanup method and to present a new structure of an external pile useful for tofu cleanup.

In detail, the conventional tofu clean-up method is proposed by newly presenting the concrete tofu clean-up method which cuts and removes the excess protruding part after underground penetration of concrete pile, and constructs the integral pile with the foundation by applying the external pile formed by protruding reinforcement to the outside of the concrete pile. In order to prevent cracks from occurring, the compressive strength pursued during manufacturing can be maintained even after tofu cleaning, to reduce the processing cost of waste concrete during tofu cleaning, and to drastically reduce the processing time of the process. will be.

In addition, a new structure of the external file will be presented together so that the tofu clean-up method can be carried out quickly and conveniently.

Referring to the configuration and effect of the present invention in detail.

1 is a tofu processing process according to the present invention

2 is tofu processing process diagram of a conventional concrete foundation pile

Figure 3 is an embodiment of the tofu processing device

4 is a cross-sectional view of the tofu treatment device

Figure 5 is a state of processing the tofu of the file using the tofu processing apparatus according to the present invention

* Description of the major symbols

1.Basic file 2.External file 2a.Rebar 2b.Concrete body

2c.Reinforcement steel plate 3. Foundation ground 4. Floor concrete 5. Foundation rebar

6. Foundation Concrete

1 is a representation of the process of the tofu of the concrete foundation pile according to the present invention in each step, the present invention is the projected length of each concrete foundation pile in the state of underground penetration of the concrete foundation pile (1) from the foundation ground Cutting process (A) for cutting the upper end of the foundation pile to a certain length, and external pile setting process (B) for covering the foundation pile (1) with the external pile (2) of the structure in which the joint reinforcing bar (2a) protrudes outward And an external file fixation process (C) for placing the bottom concrete (4) from the upper part of the foundation ground (3) to the upper surface of the external file to fix the foundation file and the external file integrally; and a joint reinforcing bar protruding from the external file. It consists of a foundation forming process (D) which arranges the foundation reinforcement 5 and casts the foundation concrete 6 to form the foundation using (2a).

The cutting process (A) is a process for cutting a plurality of foundation piles 1 inserted into the foundation ground 3 so as to maintain a constant height. The cutting height of each foundation pile is the minimum length of the reinforcing bars formed in the external pile. It is determined to be the design height of the concrete foundation.

That is, the foundation pile cutting position 10 from the foundation ground is the length of the concrete foundation to be formed by subtracting the height of the joint reinforcement formed on the external pile, so as to be described later, the concrete foundation on the protruding steel protruding portion above the outer pile as described below. Can be formed to achieve the design height of the foundation.

As shown in Figs. 3 to 5, the outer pile 2 forms a reinforcing bar 2d in the cylindrical concrete body 2b, and the vertical reinforcing bar protrudes to the upper part of the concrete body so that the joint reinforcing bars 2a are formed. It is a structure in which the reinforcing iron plate 2c is attached to the upper part with the structure formed as a basic structure.

The inner diameter of the outer file is slightly larger than the inner diameter of the base file, so that when the base file is set to the base file, an annular space is formed between the base file and the external file, and the concrete is filled in the space, so that the base file will be described later. And external files are fixed together.

The height of the external pile is to be approximately the design height of the concrete foundation, taking into account the protruding joint reinforcement, and the protrusion height of the joint rebar is configured to be the minimum length of the joint reinforcement specified in the standard specification.

The external file setting step (B) is a step of covering the external file having the structure as described above with the protrusion of the base file, and is simply completed by covering the external file with the protrusion of the base file in a state where the foundation ground is flat.

The external pile fixing process (C) is a process of placing concrete at a certain height on the foundation ground (floor concrete) so that the foundation pile and external piles are fixed.In general, the concrete pile is placed for the purpose of cleaning the foundation concrete floor. It is finished by placing concrete only without reinforcing reinforcing bars, and the placing height is up to the height of the concrete body of the external pile.

The concrete is also placed in the space between the external pile and the foundation pile so that the external pile and the pile pile are fixed together, and the reinforcement is reinforced horizontally and vertically by using the joint reinforcing bar that protrudes to the upper side after the floor concrete is completely hardened. By pouring concrete, the foundation forming process (D) is finally completed.

In the process of performing the above process, the base pile is maintained in its original form without any crack generation, and thus the compression strength pursued in the manufacturing process is maintained as it is, and various problems that occurred during the head cleanup of the conventional pile file are compressed according to the occurrence of cracks. Clean and precise foundation work is achieved without any deterioration in strength, safety accidents due to reinforcement of concrete crushed steel, and consumption of manpower.

In the drawings, reference numeral 11 denotes a press-fit device, 12 a tong fork crane, 13 a crack, and 14 a file internal reinforcing bar.

The present invention has the following effects as compared to the conventional concrete curd method.

First, since the surplus of the concrete pile is removed by cutting, there is no crack at all unlike the conventional shredding method.

Therefore, there is no problem of deterioration of the compressive strength due to cracks, and it is possible to maintain the strength pursued at the production stage of the base pile as it has a merit of solid foundation work.

Second, because the head is arranged by cutting and the joint reinforcement is formed by external pile, many work processes such as concrete crushing process by reinforcing tong fork, cutting of reinforcing steel, correction of reinforcing steel, and clean up of pile are omitted. It has the advantage of being able to reduce the labor force, foresee various safety accidents according to the process, and most of all, it has the advantage of performing the basic forming process very quickly and quickly.

Third, since the excess portion of the foundation pile is neatly removed by cutting, almost no waste due to crushing is generated, and the cut pile coating is recycled since the original form is almost maintained.

As described above, the present invention has the effect of drastically reducing various processes required during the linkage construction of the foundation pile and the foundation concrete and performing precise and solid foundation construction.

Claims (2)

The cutting process (A) for cutting the upper end of the foundation pile so that the protruding length of each concrete foundation pile is a certain length from the foundation ground in the state of underground penetration of the concrete foundation pile (1), and the joint reinforcing bars (2a) are external The external pile setting process (B) for covering the external pile (2) of the projecting structure on the basic pile (1), and the bottom concrete (4) from the upper part of the foundation ground (3) to the upper surface of the external pile And external pile fixation process (C) to integrally fix the external pile and the external pile, and reinforce the foundation reinforcement (5) using the joint reinforcing bars (2a) protruding from the external pile to form the foundation by pouring the foundation concrete (6). Tofu treatment method of the concrete foundation pile, characterized in that consisting of the foundation forming process (D). According to claim 1, The outer pile (2) is formed of a reinforcing bar (2d) inside the cylindrical concrete body (2b) of the structure formed so that the vertical reinforcing bar is projected to the upper portion of the concrete body to be a joint reinforcing bar (2a) Tofu treatment method of the concrete foundation pile, characterized in that used.