KR20210150136A - Soil retaining wall using phc pile - Google Patents

Abstract

The present invention relates to a retaining wall using a PHC pile, capable of preventing river water from flowing into a construction site by installing a sealing member between a fixing member and a fixing pipe. The retaining wall using a PHC pile includes: a plurality of PHC piles (10) provided so as to be constructed in a line along a boundary surface of the ground; and a fixing member (20) horizontally fixed to a fixing hole (11) formed on the PHC piles (10). The fixing member (20) includes: a supporter (50) comprising a round bar (21) and a fixing pipe (22), having a furring strip (30) installed on an upper side, and installed in a lower part; and supports (40) installed on the furring strip (30) at regular intervals. The fixing pipe (22) is inserted into the PHC piles (10) to be fixed. A sealing member (100) is installed near front and rear ends of the round bar (21) to keep airtight a gap made when the fixing pipe (22) and the round bar (21) are combined.

Description

Retaining wall using PHC file {SOIL RETAINING WALL USING PHC PILE}

The present invention relates to a retaining wall using a PHC pile. Specifically, the present invention relates to a retaining wall using a PHC pile, which is intended to prevent river water from penetrating into a construction site in advance by installing a sealing member between the fixed pipe and the fixed member.

The retaining method can be broadly classified according to the type of retaining wall for maintaining the independence of the soil at the back and the type of support (bracing) for structurally supporting it. As retaining walls, H-piles + earth plates, steel piles, cast-in-place retaining walls [CIP (Cast in Place Pile), SCW (Soil Cement Wall), Diaphragm Wall, Slurry Wall), etc.], underground continuous walls, etc. In general, H-piles + earth plates are installed where groundwater does not exist, and columnar retaining walls and underground continuous walls are used where groundwater exists.

In addition, braces and anchors are used for supporting work, and there is also a method (reverse perforation method) using beams and slabs of the main underground structure as supporting materials.

On the other hand, in the cast-heated retaining wall, a method of using PH stakes, which is a type of ready-made concrete piles, has been proposed instead of using the piles as cast-in-place piles.

In order to use the PHC stake as a retaining wall, it is necessary to solve the problem of installing a bracket for supporting the wale. That is, in the case of the conventional CIP or SCW, the concrete was removed from the exposed pile by excavating the ground, the H-beam inserted as a stress-bearing material was exposed, and then the bracket was installed using the H-beam. There is a problem that the method applied in the conventional CIP or SCW cannot be applied as it is.

In addition, as shown in FIG. 1, a plurality of PHC piles 10 constructed in a line along the boundary surface of the ground, and a fixing member 20 fixed to the PHC pile 10 horizontally; and a band 30 installed on the upper surface of the fixing member 20 so that the fixing member 20 is supported, and supports 40 installed at regular intervals on the band 30, wherein the fixing member ( 20) is configured to be fitted and fixed to the PHC pile (10).

For example, a fixing hole 21 is formed in the PHC file 10 so that the fixing member 20 is inserted.

The fixing member 20 is a round bar 21 of a certain length and diameter, and the round bar 21 has a structure coupled to the fixing pipe 22 .

Therefore, there is a case in which the retaining work is carried out in the river using the PHC pile 10 having the structure as described above.

However, when a river overflows or the water level reaches the position of the fixed pipe 22 in the installed state as described above, there is a case where water flows through the fixed pipe 22. It wasn't a thing.

That is, as shown in FIG. 2 , a gap (space) S is formed between the fixed pipe 22 and the round bar 21, and water may permeate through the space.

A small amount of space is required to insert the round bar into the fixed pipe. If the fixed pipe and the round bar have the same diameter, they must be fitted with an interference fit method. This is to prevent cracks, etc. from occurring in (10).

In addition, since the above-mentioned work requires a lot of time, it was an undesirable method from the viewpoint of having to construct in a short time.

1. Korean Patent Registration No. 10-1847002 (published on April 3, 2018)

1. Korean Patent No. 10-0975033 (published on August 24, 2010)

1. Korean Patent Registration No. 10-1693478 (published on Jan. 02, 2017)

Therefore, the present invention is a method to solve the above problems, and a retaining wall using a PHC pile to prevent the infiltration of river water into the construction site in advance by installing a sealing member between the fixed pipe and the fixed member. would like to provide

The present invention;

A plurality of PHC piles (10) provided to be constructed in a line along the boundary surface of the ground; and

a fixing member 20 horizontally fixed to the fixing hole 11 formed in the PHC pile 10; and

The fixing member 20 is composed of a round bar 21 and a fixing pipe 22, the band 30 is installed on the upper surface, the support 50 is installed in the lower; and

In the retaining wall using the PHC pile, including; the support 40 installed at regular intervals on the wale 30, wherein the fixing pipe 22 is inserted into the PHC pile 10 to be fixed,

A sealing member 100 for airtightly maintaining a gap generated when the fixing pipe 22 and the round bar 21 are coupled is configured to be installed near the front and rear ends of the round bar 21 .

According to the present invention, by installing a sealing member between the fixing pipe and the fixing member, it is possible to obtain the effect of preventing the infiltration of river water into the construction site in advance.

1 is a view briefly showing the state before the construction of a retaining wall using a conventional PHC pile.
2 is a view showing the state after construction of a retaining wall using a conventional PHC pile.
3 is a view showing a state in which a retaining wall using a PHC pile according to the present invention is constructed in a river.
4 (a) and (b) are views showing the state in which the sealing member is installed on the round bar constituting the fixing member according to the present invention,
(a) is a view showing a state in which one sealing member is coupled, (b) is a view showing a state in which two sealing members are coupled.

Hereinafter, based on the accompanying drawings, the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

In addition, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor appropriately defines the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be done.

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

The present invention intends to install a bracket to support the wale in order to use the PHC pile as a retaining wall when constructing a retaining wall in a river. That is a feature of the present invention.

The present invention is the same as the configuration of the retaining wall using the conventional PHC pile.

That is, as shown in FIG. 1 , a plurality of PHC piles 10 constructed in a line along the boundary surface of the site, and a fixing pipe fitted into the fixing hole 11 fixed to the PHC pile 10 horizontally ( 22) and a fixing member 20 made of a round bar 21; and a band 30 installed on the upper surface of the fixing member 20 so that the fixing member 20 is supported, and supports 40 installed at regular intervals on the band 30, wherein the fixing member ( 20) has the same configuration in which the PHC pile 10 is fitted and fixed.

However, in the present invention, at least two or more ring-shaped grooves 21a are formed at both ends of the round bar 21, and the sealing member 100 is installed in the ring-shaped grooves 21a so that it is completely sealed. It is the special length.

The sealing member 100 is an O-ring made of silicone or synthetic rubber, and is coupled by a lubricant when inserted into the fixing pipe 22 .

The lubricant may be liquid soapy water or a gelled grease lubricant.

At this time, the ring-shaped groove 21a may have a U-groove shape, but it is preferable to manufacture it in a shape such as a V-groove or a concave groove in order to prevent it from being pushed when inserted into the fixing pipe 22 as much as possible.

Therefore, as shown in Fig., the construction method in the case of installing the retaining wall using the PHC pile configured as described above on the river side will be described.

First, the PHC pile 10 is installed in close contact with each other to warn the ground.

Next, after applying an adhesive to the fixing hole 11 formed in the PHC pile 10, the fixing pie 22 is inserted and fixed.

At this time, the adhesive is an epoxy resin for stone, and maintains the PHC pile 10 and the fixing pipe 22 made of concrete in a firmly attached state.

Next, lubricating oil is applied to the inside of the fixing pipe 22 and the sealing member 100 of the round bar 21 .

As described above, in a state in which lubricant is applied to the sealing member 100 of the round bar 21 , it is coupled to the fixing pipe 22 .

At this time, the round bar 21 is naturally inserted into the fixing pipe 22 and fixed by the lubricating oil.

After that, the construction method is the same as the existing method.

That is, the lower portion of the fixing member 20 is to install the support 50, the upper surface to install the wale 30 and the support 40, the wale 30 and the support 40 are horizontally installed. The wale 30 and the support 40 are installed on the upper surface of the fixing member 20 so as to be supported.

Therefore, in the case of retaining walls using PHC piles in the river area as described above, even if it rains a lot, the water of the river does not flow down into the construction space.

So far, the present invention has looked at the retaining wall using the PHC pile, but it is obvious that various implementation modifications are possible without departing from the scope of the present invention.

And it should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of these claims and their All changes and modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

10: PHC file 11: fixing hole
20: fixing member 21: round bar
21a: fixing groove 22: fixing pipe
30: belt 40: jibo
100: sealing member

Claims (4)

A plurality of PHC piles (10) provided to be constructed in a line along the boundary surface of the ground; and
a fixing member 20 horizontally fixed to the fixing hole 11 formed in the PHC pile 10; and
The fixing member 20 is composed of a round bar 21 and a fixing pipe 22, the band 30 is installed on the upper surface, the support 50 is installed in the lower; and
In the retaining wall using the PHC pile, including; the support 40 installed at regular intervals on the wale 30, wherein the fixing pipe 22 is inserted into the PHC pile 10 to be fixed,
A retaining wall using a PHC pile, characterized in that a sealing member 100 for airtightly maintaining a gap generated when the fixed pipe 22 and the round bar 21 is coupled is installed near the front and rear ends of the round bar 21 . . The method of claim 1,
At least two fixing grooves (21a) are formed near the front and rear ends of the round bar (21), and a retaining wall using a PHC pile, characterized in that the sealing member (100) is coupled to the fixing grooves (21a). 3. The method of claim 2,
The fixing groove 21a formed in the round bar 21 has a concave groove shape, a V groove shape, or a U groove shape, and the sealing member 100 fitted in the fixing groove 21a is an O-ring. A retaining wall using a PHC pile, characterized in that the inner side is formed in a concave groove shape, a V groove shape, or a U groove shape to prevent separation from the round bar 21 when combined. 3. The method of claim 2,
Retaining wall using a PHC pile, characterized in that when the round bar 21 is coupled to the fixing pipe 22, a lubricant is applied to the surface of the sealing member 100 and coupled thereto.

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