KR20070008124A - Support pile for a pipe pile - Google Patents

Abstract

An auxiliary pile for a tubular pile is provided to preclude the tubular pile from being broken due to the separation of the auxiliary pile by installing a position separation prevention projection in the inner hole of the tubular pile and at the outer surface of the lower cover. An auxiliary pile(20) for a tubular pile(10) is composed of a cylindrical pile body(21); covers(22,23) sealing the upper and lower ends of the pile body; and a position separation prevention projection(24) detachably fitted in an inner hole(10a) of the tubular pile and projected at the outer surface of a lower cover(23) to conform the shaft center of the auxiliary pile to the shaft center of the tubular pile.

Description

Support pile for a pipe pile {Support pile for a pipe pile}

1 is a view showing a state in which the tubular pile is embedded in the ground by the driving device and the conventional auxiliary file,

2 is a perspective view showing a conventional auxiliary file,

3 is a view for explaining the operation of embedding a tubular file in the ground using a conventional auxiliary file,

4 is a perspective view showing an auxiliary file according to the present invention;

5 is a view for explaining the operation of embedding the tubular file in the ground using the auxiliary file according to the present invention.

-Explanation of terms for the main parts of the accompanying drawings-

10,10 ', 10 "; Tubular file, 20; Secondary file,

21; Pile body, 22,23; cover,

24; Anti-position projection, 24a; Guide,

24b; Stopper portion, 100; Driving Equipment,

110; Hammer, G; Ground,

G1; Hard ground, G2; Soft Ground,

G3; Reinforcement ground, H; hole.

The present invention relates to an auxiliary file used to drive a tubular file into soft ground.

As is well known, soils classified in the upper part of the earth from the construction engineering point of view are soils, clays, and history of soils. Geologically, it is classified into alluvial and erythmic, and mechanically, it is divided into soft ground and hard ground. It depends on the geology of the place.

On the other hand, in order to strengthen the base of the building, the foundation work is carried out. If the ground contacting the structure, such as hard ground, has sufficient rigidity to support it, the foundation work can be carried out directly on the hard ground. In the case of the soft ground which is not, the foundation work is carried out after the designation is carried out to fix the pile or improve the ground so that ground settlement does not occur.

Although various types of files such as steel sheet pile, tubular pile, and H-shaped steel pile are appropriately selected and used, the pile file is generally used for designation of soft ground, and such tubular pile is a steel pipe according to its material. Files, PC files, PHC files and the like.

The tubular pile is embedded in ground by driving equipment such as a drop hammer, a steam hammer, a diesel pile hammer, and a vibration pile driver.

Referring to Figure 1, the operation of driving the tubular files (10 ', 10 ") into the ground will be described as follows.

First, as shown in FIG. 1, when the support force is very low so that the soft ground G2 covered on the hard ground G1 cannot support the driving device 100, the reinforcement ground on the soft ground G2 ( The ground reinforcement work is performed so that the driving device 100 is not buried in the soft ground by covering the G3).

In this state, after moving the driving device 100 to a position for driving the tubular pile (10 ', 10 "), the ground (10', 10") of the tubular pile (10 ', 10 ") via the ground (G) ) Into the tubular pile (10 ', 10 ") to firmly infiltrate the hard ground (G1). At this time, as in the case of the tubular pile (10') shown in Figure 1, When the hard ground G1 is located at a shallow position from the ground, the tubular pile 10 'is directly driven to the ground G by hitting the tubular pile 10' with the hammer 110 of the driving device 100. However, as in the case of the steel plate pile (10 ") shown in Figure 1, when the hard ground (G1) is located deep from the ground, the auxiliary pile 20 is placed on the tubular pile (10"), By hitting the auxiliary pile 20 with the hammer 110 of the driving device 100, the tubular pile 10 "is indirectly driven into the ground G.

Subsequently, when the pile pile construction is completed, the burr work to remove the reinforcement ground (G3) and soft ground (G2) is performed.

When the excavation work is completed, the foundation works such as pouring and curing concrete sleeves.

For reference, when the hard ground G1 is located deep from the ground, the tubular pile by hitting the tubular pile 10 "with the hammer 110 of the helm device 100 without using the auxiliary pile 20, When the 10 "is directly driven into the ground G, the tubular pile 10" excessively protrudes out of the hard ground G1 during the excavation work, and thus excessively protrudes using a cutter such as a welding machine. The tubular pile 10 "has to be cut off. Therefore, when the hard ground (G1) is located deep from the ground when the tubular pile (10 ") is directly driven into the ground (G) without using the auxiliary file 20, cutting the tubular pile (10") Due to the work or the like, the work is considerably cumbersome and difficult, and the safety of the worker is greatly threatened, and the tubular file 10 "is unnecessarily wasted.

However, the conventional tubular pile auxiliary file, as shown in Figure 2, a structure consisting of a cylindrical pile body 21 and the cover (22, 23) for sealing the upper and lower ends of the pile body 21, respectively. When the tubular piles 10 'and 10 "are driven into the ground G using the auxiliary pile 20, the upper ends of the tubular piles 10' and 10" are deformed and damaged and applied. Since the external force is transmitted eccentrically, there is a problem that the efficiency of the pile file operation is greatly reduced.

This will be described with reference to FIG. 3 as follows.

As shown in FIG. 3, in the state where the tubular pile 10 is inserted or lodged in the hole H of the ground G, the auxiliary pile 20 is introduced into the hole H of the ground G, The auxiliary file 20 is placed on the tubular file 10. The outer diameter of the tubular pile 10 and the outer diameter of the auxiliary pile 20 may be slightly different, but in principle, the outer diameters of the tubular piles 10 are the same.

In this state, when the driving device 100 is operated to apply an external force to the top cover 22 of the auxiliary pile 20 with the hammer 110, the external force from the hammer 110 is tubular through the auxiliary pile 20. Passed to the file 10, the tubular file 10 is embedded in the ground (G). At this time, the inner diameter of the ground hole (H) can only be larger than the outer diameter of the tubular pile (10) and the outer diameter of the auxiliary pile (20), when hitting the auxiliary pile (20) with the hammer (110), the auxiliary pile (20) ) Changes position while rocking in the ground hole (H). When the auxiliary file 20 swings in the ground hole H and is changed in position, the shaft center of the auxiliary file 20 is spaced apart from the axis center of the tubular file 10, so that the auxiliary file 20 faces the auxiliary file 20. The upper end of the pile 10 is deformed and damaged, and the external force from the hammer 110 cannot be properly transmitted along the axial center of the tubular pile 10, and is eccentrically transmitted.

Accordingly, the present invention has been invented to solve the above problems, and an object thereof is to provide an auxiliary file for a tubular file that can be inserted into the tubular file more appropriately without damaging the tubular file.

The present invention for achieving the above object, in the auxiliary pile for the tubular pile consisting of a cylindrical pile body and a lid for sealing the upper and lower ends of the pile body, respectively, the axis center of the auxiliary pile and the shaft of the tubular pile The position preventing protrusion which is inserted and detachably inserted into the inner hole of the tubular pile so as to coincide with the center is configured to protrude to the outer surface of the bottom cover.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 are views showing the auxiliary file according to the present invention, the same reference numerals are attached to the same parts as in FIGS. 1 to 3 showing the prior art, and description thereof will be omitted.

According to Figure 4, the auxiliary pile 20 according to the present invention, the cylindrical pile body 21 and; Lids 22 and 23 for sealing the upper and lower ends of the pile body 21; It is provided to protrude on the outer surface of the bottom cover 23, is inserted and fixed to the inner hole (10a) of the tubular pile (10), the shaft center of the auxiliary pile 20 and the shaft center of the tubular pile (10) It forms a structure consisting of the displacement preventing projections 24 to be matched.

In the present embodiment, the frame-shaped frame is composed of a guide portion 24a inclined and the stopper portion 24b facing the inner wall surface of the tubular pile inner hole 10a. It was to form the form of 十 ".

Referring to Figure 5, when describing the tubular pile operation using the auxiliary file according to the present invention.

As illustrated in FIG. 5, when the auxiliary pile 20 is inserted into the hole H of the ground G while the tubular pile 10 is inserted or embedded in the hole H of the ground G, as shown in FIG. , While the position preventing protrusion 24 of the auxiliary file 20 is naturally inserted into the inner hole 10a of the tubular file 10, the lower cover 20 of the auxiliary file 20 on the top of the tubular file 10. Are face to face.

In this state, when the driving device 100 is operated to apply an external force to the top cover 22 of the auxiliary pile 20 with the hammer 110, the external force from the hammer 110 is tubular through the auxiliary pile 20. Passed to the file 10, the tubular file 10 is embedded in the ground (G).

At this time, the tubular pile 10 and the auxiliary pile 20 is in a state in which the center of the shaft is coincident with the displacement preventing projections 24 which are inserted into the inner hole 10a of the tubular pile 10 so as to be detachable. The external force from 110 is transmitted accurately to the axial center of the tubular pile 10, and the external force from the hammer 110 is transmitted through the bottom cover 23 of the auxiliary pile 20 to the entire upper surface of the tubular pile 10. Evenly distributed over, the deformation and damage of the tubular pile 10 due to the positional deviation of the auxiliary pile 20 no longer occurs.

On the other hand, the reference numerals "Ga" and "Gb" are a part that is firmly chopped by the tubular pile when injecting the tubular pile, and serves to push the soil, gravel, and the like from the center of the tubular pile to the surroundings as if it is a wedge. do.

The present invention is not limited to the embodiment as described above, and of course, various modifications can be made without departing from the scope of the following claims.

In one example, the position preventing protrusion 24 is inserted into the inner hole (10a) of the tubular pile (10) so as to be inserted, so that the axis center of the auxiliary pile 20 and the shaft center of the tubular pile (10) to match. As long as it can be done, any shape and shape can be applied.

According to the present invention as described above, the position preventing protrusion 24 is inserted into the inner hole (10a) of the tubular pile (10) to be secured, the shaft center and the tubular pile (10) of the auxiliary pile (20) ), So that the axis center of the coincidence is coincident with the structure of the lower cover 23 so as to protrude, the external force from the hammer 110 is accurately transmitted to the axis center of the tubular pile 10, and the auxiliary pile 20 Deformation and damage of the tubular pile 10 due to the deviation of the position is prevented.

Claims (1)

In the auxiliary pile for the tubular pile consisting of a cylindrical pile body 21 and a lid (22, 23) for sealing the upper and lower ends of the pile body 21, respectively, Position-preventing projection 24 is inserted and detachably inserted into the inner hole 10a of the tubular pile 10 so that the shaft center of the auxiliary pile 20 and the shaft center of the tubular pile 10 coincide with each other. The auxiliary file for the tubular pile, characterized in that provided to protrude on the outer surface of the cover (23).

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