KR102070912B1 - Phc pile for soil retaining wall, mold assembly and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a PHC file for a retaining wall, a mold assembly for manufacturing the same, and a manufacturing method using the same. The PHC file for a retaining wall according to an embodiment of the present invention includes: a PHC file body in which a plurality of PC steel wires are embedded; A plurality of insert holes formed at predetermined intervals along a length direction of the PHC pile body; And an insert member installed in the insert hole and embedded in concrete constituting the PHC pile body when the PHC pile is manufactured. It may include.

Description

PHC pile for soil wall, mold assembly for manufacturing same and manufacturing method using same {PHC PILE FOR SOIL RETAINING WALL, MOLD ASSEMBLY AND MANUFACTURING METHOD THEREOF}

The present invention relates to a PHC pile for a retaining wall, and more particularly, to a PHC pile for a retaining wall for constructing a retaining wall using a PHC file, a mold assembly for manufacturing the same, and a manufacturing method using the same.

When the foundation (part) of a building or civil engineering structure is placed on a soft ground, a pile (pile), which is a deep foundation, is embedded up to a support layer to secure support and stabilize the foundation. There are various kinds of piles such as wood, steel and concrete, and they are installed by various construction methods such as incense, incense, and incense.

Among various kinds of piles, wood and precast concrete piles (PC piles) are economically and constructable, and PHC piles, which are excellent in workability, economics, and stability, are currently used in construction and civil engineering structures that support low vertical and vertical forces.

In addition, in order to overcome the small horizontal resistance of the PHC pile when the PHC pile is used, the composite pile combining the two by applying a steel plate to the upper part which has a large bending and shear cross-sectional force and a PHC pile to the lower part which acts only on the axial force. In addition, after fabricating the pile by installing a shear connector inside the upper part of the PHC pile, the use of synthetic piles reinforced with reinforcement in the back and filling concrete with reinforced bending and shearing is frequently used.

On the other hand, the clogging method can be largely classified according to the type of the retaining wall to maintain the independence of the back soil sediment and the type of support (structure) to support it structurally.

Soil Cement Wall (SCW: Soil Cement), H- section steel + earth pipe (wood), sheet pile wall, cast-in-place concrete pile (CIP: Cast In Place) Walls, Diaphram Walls, Slurry Walls, etc., and the types of support methods include braces, ground anchors, and soil nailing.

As mentioned above, the earthen wall is a temporary structure that is constructed for the purpose of constructing underground structures and resists side pressures such as earth pressure and water pressure during underground excavation work and for the purpose of settlement of surrounding ground and protection of adjacent structures. As excavation work is more frequent, the purpose of use is gradually diversifying, such as ground subsidence or construction to protect buildings.

On the other hand, the H-beam + earth plate is installed where no groundwater exists, and where the remaining water is present, the remaining construction methods and the like are used.

The retaining wall consisting of H-beam + earth plate is drilled into the ground using auger equipment, and the H-beam is installed along the excavation boundary at predetermined intervals, and at the same time, the earth plate is sandwiched between both H-beams. As a construction method to go down and use it as a retaining wall, wood is mainly used as a soil plate.

The steel sheet pile wall is a method of forming sheet wall temporary steel by continuously installing sheet pile section steel in the ground with a vibratory hammer drill to bite each other.

The cast-in-place concrete pile (CIP) is drilled into the ground using auger equipment, and the H-beams are installed in the recesses along the digging surface boundary at predetermined intervals. It is a method of forming temporary walls by making piles by casting cement mortar or concrete.

The main heat cement cement wall (SCW) uses three-axis auger to drill the ground three holes and add cement mortar and stir to form a soil cement mixing pile in the ground. It is a method of forming a temporary wall with a column-type soil wall while repeating the construction to bite one by one.

In order to prevent the collapse of the excavation surface and the penetration of groundwater, the underground continuous wall excavates the ground of the wall part while inserting the stabilizer (bentonite), inserts the reinforcing reinforcing bar network, and then casts concrete to form the reinforced concrete continuous wall in the ground. It is a construction method.

Recently, instead of using cast-in-placement piles in constructing the wall, many PHC piles are used. To use this PHC pile wall as a wall, connect the PHC piles located adjacent to each other using a belt.

However, when the level of the PHC pile to be poured cannot be maintained, a step is formed in the bolt hole for fastening the strip to the PHC pile, resulting in a difference in the height of the strip to be fastened. .

Moreover, if a step is generated in the bolt hole, there is a risk that the bolt that fastens the PHC pile and the strip is released from the bolt hole.

On the other hand, PHC piles buried underground when the scent or machine work is affected by the external environment, such as vibration. At this time, since no hole is formed in the PHC pile, the pressure, vibration, and groundwater applied to the PHC pile at the time of scenting or machine work cannot escape the PHC. Therefore, vibration, pressure, groundwater, etc. There is a problem that damage, such as cracks occur in the PHC file.

Accordingly, the present applicant, the present invention has been proposed to solve the above problems, and as related prior art documents, Korean Patent Publication No. 10-0913569 (Invention name: P. C file for the wall, registration date: August 17, 2009).

SUMMARY OF THE INVENTION An object of the present invention is to provide a PHC file for a mud wall, which is capable of fastening a band for supporting a PHC file without damaging the PHC file in the process of constructing a mud wall, a mold assembly for manufacturing the same, and a manufacturing method using the same. will be.

In addition, another object of the present invention is to provide a PHC file for a retaining wall, a mold assembly for manufacturing the same, and a manufacturing method using the same, which can prevent the PHC file from being damaged by hydraulic or pneumatic pressure during a blow or machine work. .

The problem to be solved by the present invention is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description.

The above object, according to the present invention, a PHC file body in which a plurality of PC steel wire is built; A plurality of insert holes formed at predetermined intervals along a length direction of the PHC pile body; And an insert member installed in the insert hole and embedded in concrete constituting the PHC pile body when the PHC pile is manufactured. It can be achieved by a PHC pile for the wall wall including a.

The insert member may be provided in a nut structure, and bolts for fastening a strip to the PHC pile may be inserted and fastened when the wall is constructed.

The insert hole is penetrated to connect the inside and the outside of the PHC pile body, and the insert member is provided in a nut structure, and both the side into which the bolt is inserted and the opposite side thereof are opened, so that the PHC pile body is installed at the construction of the wall. It is possible to prevent damage to the PHC file body by releasing the air pressure or water pressure generated inside the outside of the PHC file body.

The insert hole is penetrated to connect the inside and the outside of the PHC pile body, and the insert member is provided in a sleeve structure penetrating in the longitudinal direction, so that the air pressure generated inside the PHC pile body when the wall is constructed, or The water pressure may be discharged to the outside of the PHC file body to prevent damage to the PHC file body.

The plurality of insert holes may be provided in a plurality of rows spaced apart along the circumferential direction of the PHC pile body.

The PHC pile further includes a watertight member made of a synthetic resin material provided at one end of the insert member facing outwardly of the PHC pile body, wherein the watertight member is placed at one end of the insert member when the PHC file is manufactured. It may be installed embedded in the concrete constituting the main body together with the insert member.

The watertight member may be deformed into a curved surface along the outer circumferential surface of the PHC pile body in the process of curing the concrete constituting the PHC pile body during manufacture of the PHC pile.

A protruding portion may be formed on an outer circumferential surface of the insert member to prevent the insert member embedded in the concrete from being separated from the concrete.

On the other hand, according to another field of the present invention, a mold assembly for manufacturing a PHC pile for earthwall wall, the mold assembly for coupling the upper mold and the lower mold with each other to provide a space in which the concrete for forming the PHC pile; A position fixing bolt which is fastened to an insert member disposed inside the mold to be embedded in the concrete, and fixes the position of the insert member in the process of pouring and curing the concrete; And it may be achieved by a mold assembly for manufacturing a soil wall PHC pile including a position fixing bolt hole is formed through the mold so that the position fixing bolt is inserted from the outside of the mold and fastened to the insert member. .

In the process of pouring and curing the concrete at a position adjacent to the position fixing bolt hole so that the concrete placed inside the mold does not flow out to the gap between the position fixing bolt and the position fixing bolt hole. It may further include a watertight member made of synthetic resin material fitted to the position fixing bolt.

On the other hand, according to another field of the present invention, the step of providing a mold for providing a space in which the concrete for forming the PHC pile for the wall wall; Forming a plurality of position fixing bolt holes at predetermined intervals along the longitudinal direction of the mold; Inserting the position fixing bolt through the position fixing bolt hole at the outside of the mold in a state where the insert member is disposed inside the mold to fasten the insert member; Arranging a plurality of PC steel wires inside the mold and winding spiral reinforcing wires around the plurality of PC steel wires; Injecting concrete into the mold; When curing of the concrete is completed, removing the position fixing bolt from the mold; And demolding the mold in the cured concrete.

After the step of winding the reinforcing bar, cutting a portion of the spiral bar that interferes with the insert member to prevent the spiral bar from being eccentric in one direction by the insert member disposed inside the mold. It may further include.

PHC pile for the wall of the present invention, a mold assembly for manufacturing the same and a manufacturing method using the same, is applied to the PHC pile during the blow or machine work by connecting the inside and outside of the PHC pile body by the insert member and the insert hole Pressure or groundwater can be released from inside the PHC pile to the outside to prevent damage to the PHC pile.

In addition, the PHC file for the mud wall of the present invention, a mold assembly for manufacturing the same, and a manufacturing method using the same, because the insert member is embedded in the PHC pile when constructing the mud wall without damaging the PHC file when constructing the mud wall It is easy to fasten the bands supporting the PHC pile.

In addition, the PHC pile for the wall of the present invention, a mold assembly for manufacturing the same, and a manufacturing method using the same, the insert member embedded in the PHC pile body by embedding the insert member and the water-tight member on the outer peripheral surface of the PHC pile together with the PHC pile body The upper surface of the does not protrude, it is possible to prevent the insert member from being damaged by the impact.

1 is a perspective view showing a retaining wall using a PHC file according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a PHC file shown in FIG. 1.
3 is a modified example of the PHC file shown in FIG.
4 is a view schematically showing a portion A shown in FIG. 2.
5 is a view showing that the watertight member is located at the upper end of the insert member shown in FIG.
FIG. 6 is a view schematically illustrating a portion B shown in FIG. 2.
FIG. 7 is a view showing a modification of the insert member shown in FIG. 6.
FIG. 8 is a view showing an insert member embedded in the PHC file shown in FIGS. 2 and 3.
Figure 9 is a perspective view showing a mold assembly for manufacturing a PHC pile for earth walls according to an embodiment of the present invention.
FIG. 10 is a cross sectional view of the CC ′ portion shown in FIG. 9.
11 is a view showing that the watertight member is coupled to the position fixing bolt shown in FIG.
12 is a flow chart of a manufacturing method of a PHC file for a retaining wall according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

It is noted that the figures are schematic and not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same reference numerals are used to represent similar features in the same structures, elements or parts that appear in more than one figure.

Embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various modifications of the drawings are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, and includes, for example, modification of the form by manufacture.

Hereinafter, with reference to the accompanying drawings will be described PHC file for the wall wall according to an embodiment of the present invention, a mold assembly for producing the same and a manufacturing method using the same.

First, referring to FIGS. 1 to 8, a PHC file 100 (hereinafter, referred to as a 'PHC file') for an earthquake wall according to an embodiment of the present invention will be described.

1 is a perspective view showing a retaining wall using a PHC file according to an embodiment of the present invention, Figure 2 is a view showing a PHC file shown in Figure 1, Figure 3 is a modification of the PHC file shown in Figure 2, Figure 4 is a view schematically illustrating a portion A shown in FIG. 2, FIG. 5 is a view showing a watertight member positioned at an insert member shown in FIG. 4, and FIG. 6 is a view schematically showing a portion B shown in FIG. 2. 7 is a view showing a modification of the insert member shown in FIG. 6 and FIG. 8 is a view showing the insert member embedded in the PHC file shown in FIGS. 2 and 3.

1 to 8, the PHC file 100 according to an embodiment of the present invention includes a PHC file body 110 and a PHC file body 110 in which a plurality of PC steel wires (not shown) are embedded. Is installed in the plurality of insert holes 112 and the insert hole 112 formed at a predetermined interval along the longitudinal direction, is embedded in the concrete constituting the PHC pile body 110 in the manufacture of the PHC pile 100 It includes an insert member 120 is installed.

1 and 2, the PHC pile body 110 is made of concrete and is formed in a cylindrical shape having a long length in the longitudinal direction. The inside of the PHC pile body 110 is partially formed in a hollow, the other portion is provided with a plurality of PC steel wires (not shown) in the longitudinal direction at regular intervals. At this time, the PC steel wire is embedded embedded in the process of pouring and curing the concrete constituting the PHC pile body 110. For reference, the PC steel wire provides prestressed strength to the PHC file body 110 to provide strength to the compression force of the PHC file body 110, and at the same time improves the compression force of the PHC file body 110. You can.

In addition, although not shown in the drawings, a cap (not shown) may be provided on the top surface of the PHC pile body 110. The cap is to close the upper end of the PHC pile body 110, may be provided in the form of a metal band (band) or band, it may be provided in a variety of materials and forms.

Insert holes 112 are formed in the PHC pile body 110 at regular intervals along the length direction. The insert member 120 is installed inside the insert hole 112. For reference, the number and shape of the insert holes 112 may vary depending on the number and shape of the insert members 120 inserted into the insert holes 112.

The insert member 120 is provided in a nut structure made of metal. The insert member 120 facilitates insertion and fastening of bolts (not shown) for coupling the strip 10 to the plurality of PHC piles 100 when constructing the wall.

Here, the insert member 120 may be formed in the form of a general insert nut of at least one side of one side or the other side is closed, and in the form of a general nut (type) of one side and the other side is open. It may be formed, but is not necessarily limited thereto.

For reference, although not shown in the drawing, the strip 10 may be directly fastened to the PHC pile body 110, and a separate connection member such as a bracket (not shown) may be fastened to the insert hole 112. The band 10 may be coupled to the bracket to support the PHC pile 100.

Here, the PHC pile 100 is formed by pouring concrete into the mold, rotating the mold to perform centrifugal molding, and curing and deserting the mold. At this time, when the mold is rotated after the insert member 120 is inserted into the mold in the process of pouring concrete, a hollow is formed in the PHC pile body 110 and the insert hole 112 is formed by the insert member 120. The insert member 120 is embedded in the insert hole 112.

When the insert member 120 is embedded in the concrete constituting the PHC pile body 110 in the process of manufacturing the PHC pile 100 as described above, the insert member 120 is embedded in the PHC pile body 110 As a result, a space of the PHC file body 110 is formed. At this time, the space formed in the PHC pile body 110 by the insert member 120 is preferably viewed as the insert hole 112 described above. That is, since the insert hole 120 is formed in the PHC file body 110 by the insert member 120 in the process of embedding the insert member 120 in the concrete constituting the PHC file body 110, the PHC file In order to embed the insert member 120 in the main body 110, it is not necessary to form the insert hole 112 separately. The division of the insert hole 112 and the insert member 120 is for convenience of description of the PHC file 100 according to an embodiment of the present invention.

Meanwhile, referring to FIG. 7, the insert member 120 is formed of an insert member 120-1 having a nut structure in which threads are formed therein, or of a sleeve structure in which a thread is not formed therein. It may be provided as the insert member 120-2.

For example, as shown in FIG. 7A, the insert hole 112 is formed to connect the inside and the outside of the PHC pile main body 110, and the thread is formed inside the insert member 120-1. It is provided in a nut structure but is formed so that both the side into which the bolt (not shown) is inserted and the opposite side are open. In addition, as shown in FIG. 7B, the insert hole 112 is formed to connect the inside and the outside of the PHC pile main body 110, and threads are not formed in the insert member 120-2. It is provided as a sleeve structure that is formed penetrating in the longitudinal direction without. Accordingly, the air pressure or the water pressure generated inside the PHC pile body 110 during construction of the retaining wall is external to the PHC pile body 110 through the insert members 120-1 and 120-2 and the insert hole 112. Emission to prevent the damage of the PHC file body 110.

In other words, as described above, when the insert members 120-1 and 120-2 are formed to connect the inside and the outside of the PHC pile body 110, a blow or ball for installing the PHC pile 100 is installed. The pressure applied to the PHC pile body 110 or the groundwater of the buried ground may be discharged from the inside of the PHC pile body 110 to the outside through the insert members 120-1 and 120-2, Damage to the PHC pile body 110 such as cracks or cracks may be prevented due to pressure or impact.

For reference, the insert member 120-1 illustrated in FIG. 7A is preferably formed of a metal material because a bolt (not shown) is coupled thereto. However, the insert member 120-2 shown in FIG. 7B does not have to be provided with a metal material because bolts (not shown) do not need to be coupled. That is, it is preferable that the insert member 120-2 provided in the sleeve structure penetrating in the longitudinal direction is made of PE material from a synthetic resin material. If the insert member 120-2 is made of PE, the manufacturing cost of the PHC pile 100 according to an embodiment of the present invention can be lowered.

On the other hand, although not shown in the figure, a water cap (not shown) may be fitted to the insert member 120. The water cap is intended to prevent foreign matter from entering or water from being inserted into the insert member 120 formed in the form of a sleeve communicating with the inside of the PHC pile body 110. The cap of the water barrier may be formed to be inserted into the hole of the insert member 120, it may be formed of a variety of materials.

2 and 3, the insert holes 112 are disposed at predetermined intervals along the outer circumferential surface of the PHC pile body 110.

Specifically, as shown in FIG. 2, insert holes 112 having insert members 120 disposed therein are arranged one by one at predetermined intervals along the longitudinal direction of the PHC pile body 110.

3, the insert holes 112 are provided in a plurality of rows spaced apart along the circumferential direction of the PHC pile body 110-1. In other words, a plurality of insert holes 112 provided at predetermined intervals along the longitudinal direction of the PHC pile body 110-1 are provided in a plurality of rows spaced apart along the circumferential direction of the PHC pile body 110-1. That is, when the insert holes 112 are provided in a plurality of rows along the circumferential direction of the PHC pile body 110-1 as shown in FIG. 3, the insert holes 112 are the PHC pile bodies as shown in FIG. 2. Pneumatic pressure or water pressure generated inside the PHC pile body 110 during the scenting or machine work operation is greater than that provided in one row along the longitudinal direction of the 110 through the insert member 120 of the PHC pile body 110. It can be discharged to the outside faster.

Meanwhile, referring to FIG. 4, when the insert member 120 is embedded in the PHC pile body 110, the upper end portion of the insert member 120 protrudes from the PHC pile body 110.

Specifically, since the outer circumferential surface of the PHC pile body 110 is formed as a curved surface having a constant curvature, and the upper end portion of the insert member 120 is formed as a flat straight surface rather than a curved surface corresponding to the outer circumferential surface of the PHC pile body 110. Both ends of the upper end portion of the insert member 120 may only protrude from the PHC pile body 110. As such, when both ends of the upper end portion of the insert member 120 protrude from the PHC pile body 110, the insert member 120 formed of a metal material is adjacent to each other or to the strip 10 supporting the plurality of PHC piles 100. The upper end portion of the insert member 120 may be damaged by being impacted by the PHC pile body 110 and the like.

Referring to FIG. 5, the PHC pile 100 according to an embodiment of the present invention further includes a watertight member 130. The watertight member 130 is positioned at the upper end of the insert member 120 so that the insert member 120 does not protrude from the outer circumferential surface of the PHC pile body 110 so that the upper end of the insert member 120 is damaged by the band 10 or the like. Can be prevented. The watertight member 130 is provided along with the insert member 120 in the concrete constituting the PHC pile body 110 in a state of being placed at the upper end of the insert member 120 so as not to cover the hole of the insert member 120.

Here, the watertight member 130 according to an embodiment of the present invention is provided with a PE material (polyethylene) of the synthetic resin material is embedded in the concrete constituting the PHC pile body 110 embedded with the insert member 120 Its shape can be modified. For reference, it is preferable that the watertight member 130 is made of polyethylene (PE) material among synthetic resin materials, but is not necessarily limited thereto. The watertight member 130 may be deformed into any one of flexible materials except for a hard metal material. have.

Specifically, the watertight member 130 is formed in the form of a ring or ring-plate having a diameter larger than that of the insert member 120 in a line which does not block the hole of the insert member 120. When the watertight member 130 of this type is embedded with the insert member 120 in the concrete constituting the PHC pile body 110, the PHC pile body 110 in the process of curing the concrete constituting the PHC pile body 110. Will be curved along the outer circumferential surface of

In other words, the side surface portion of the edge of the watertight member 130 formed of a synthetic resin material is embedded together in the concrete constituting the PHC pile body 110 so that the watertight member 130 is the same curved surface as the outer circumferential surface of the PHC pile body 110. Is transformed into a curved surface. That is, the watertight member 130 not only prevents the upper end of the insert member 120 from being damaged, but one surface of the watertight member 130 is deformed into the same curved surface as the outer circumferential surface of the PHC pile body 110 so that the watertight member 130 ) May be prevented from protruding from the outer circumferential surface of the PHC pile body 110 to facilitate fastening the strip 10 to the PHC pile 100.

For reference, the watertight member 130 is formed in the form of a ring or ring plate having a flat surface, but is not necessarily limited thereto, provided in the form of a cap (cap) to cover the upper end of the insert member 120 (cap) It may be formed in the form of.

Although not shown in the drawings, a portion of the outer circumferential surface of the PHC pile body 110 may be formed as a flat straight surface instead of a curved surface. As such, the insert member 120 may be embedded in the outer circumferential surface of the PHC pile main body 110 having a flat portion partially flat. Then, the insert member 120 embedded in the PHC pile body 110 does not protrude from the outer circumferential surface of the PHC pile body 110.

Referring to FIG. 8, the protrusion 122 is formed on the insert member 120. The protrusion 122 prevents the insert member 120 embedded in the concrete constituting the PHC pile body 110 from being separated from the PHC pile body 110. The protrusion 122 is formed to protrude in one side and the other direction at the lower end of the insert member 120, respectively.

For example, there is a risk of being separated from concrete after being embedded in concrete constituting the insert member 120 PHC pile body 110 formed in the shape as shown in FIG. Because, the insert member 120 is formed of a metal material and the PHC pile body 110 is composed of concrete, because the metal material and the concrete is not very good binding force.

On the other hand, when the protrusion 122 is formed on the outer circumferential surface of the insert member 120, as shown in Figure 8 (b) increases the frictional force with the PHC pile body 110 made of concrete by the protrusion 122 Therefore, the binding force between the insert member 120 and the PHC pile body 110 is increased. That is, even if the insert member 120 formed of the metal material is embedded in the concrete constituting the PHC pile body 110, the area in contact with the concrete is increased by the protrusion 122 formed at the lower end of the insert member 120. The binding force is improved, so that the insert member 120 is not separated from the concrete constituting the PHC pile body 110.

For reference, although the protrusion 122 formed in FIG. 8B is formed as a stepped shape along the outer circumferential surface of the insert member 120, the protrusion 122 is not necessarily limited thereto, and is not necessarily limited thereto. It may be modified in any form that protrudes into.

Hereinafter, a mold assembly 200 (hereinafter referred to as a 'mold assembly') for manufacturing a PHC file for a retaining wall according to an embodiment of the present invention will be described with reference to FIGS. 9 to 11.

9 is a perspective view showing a mold assembly according to an embodiment of the present invention, FIG. 10 is a cross-sectional view of the CC 'portion shown in FIG. 9 and FIG. 11 is a watertight member coupled to the position fixing bolt shown in FIG. It is a figure which shows that.

9 to 11, the mold assembly 200 is a mold in which the upper mold 212 and the lower mold 214 are bonded to each other to provide a space in which concrete is poured for forming the PHC pile 100. 210, the position fixing bolt 220 is fastened to the insert member 120 disposed inside the mold 210 so as to be embedded in the concrete to fix the position of the insert member 120 in the process of pouring and curing the concrete. ) And the position fixing bolt 220 is inserted from the outside of the mold 210 to include a position fixing bolt 220 formed through the mold 210 to be fastened to the insert member 120.

Referring to FIG. 9, the mold 210 is a member for molding the PHC pile 100. The mold 210 is formed in a hollow cylindrical shape to form a PHC pile 100 having a long length in the longitudinal direction. For reference, a PC steel wire, a plurality of reinforcing bars, etc., which are embedded in the PHC file 100 may be located inside the mold 210, but are omitted for convenience of description of the mold assembly 200.

Meanwhile, the mold 210 is divided into an upper mold 212 and a lower mold 214. The upper mold 212 and the lower mold 214 are formed in the same shape and length. At this time, the upper mold 212 is a position fixing bolt hole 216 to be described later is a portion where the insert member 120 and the position fixing bolt 220 is positioned through the position fixing bolt hole 216, The lower mold 214 is a portion where concrete is poured. Here, the upper mold 212 is composed of one mold 210 by being coupled to the upper portion of the lower mold 214.

For reference, although the upper mold 212 is shown as being positioned at the upper end of the lower mold 214, this is the position fixing bolt 220 and the insert member 120 is fastened to the position fixing bolt hole 216 The description is for convenience. In addition, unlike the illustrated in the figure, concrete may be poured into the upper mold 212 instead of the lower mold 214, and the lower mold 214 may be coupled to the upper portion of the upper mold 212 in which the concrete is poured.

On the other hand, the position fixing bolt hole 216 is formed in the upper mold (212). The position fixing bolt hole 216 is penetrated at regular intervals along the longitudinal direction of the upper mold 212. The position fixing bolt 220 is inserted into the position fixing bolt hole 216 from the outside of the upper mold 212. The position fixing bolt 220 is for fixing the position of the insert member 120 to the PHC pile 100 to fasten the strip 10 supporting the PHC pile 100 at the time of constructing the wall. In other words, the position fixing bolt 220 is inserted into the position fixing bolt hole 216 from the outside of the upper mold 212, and the insert member 120 is fastened to the inserted position fixing bolt 220.

When the fixing bolt 220 and the insert member 120 are fastened to the upper mold 212 and the concrete is injected (or poured) into the mold 210 and cured, the mold assembly 200 The insert member 120 is embedded in the manufactured PHC file 100 at predetermined intervals along the longitudinal direction of the PHC file 100.

For reference, after the manufacture of the PHC pile 100 is finished using the mold assembly 200, the position fixing bolt 220 is separated from the insert member 120 embedded in the PHC pile 100.

Referring to FIG. 11, the watertight member 130 is positioned between the position fixing bolt 220 and the insert member 120. The watertight member 130 prevents the concrete from flowing between the position fixing bolt 220 and the insert member 120 or the position fixing bolt 220 and the upper mold 212 in the process of pouring and curing the concrete.

If the watertight member 130 is not positioned between the position fixing bolt 220 and the insert member 120, the position fixing bolt 220 and the insert member 120 may be disposed in the process of pouring and curing concrete. The concrete is introduced into or between the fixing bolt 220 and the upper mold 212 may be solidified as it is. Then, it may be difficult to separate the insert member 120 and the position fixing bolt 220 after the molding of the PHC pile 100 is completed.

That is, in the process of pouring and curing concrete while the watertight member 130 is fastening the position fixing bolt 220 and the insert member 120 through the position fixing bolt hole 216 formed in the upper mold 212. By preventing the concrete from leaking out of the gap between the position fixing bolt 220 and the position fixing bolt hole 216, the insert member 120 and the position fixing bolt 220 are easily separated after curing of the concrete is completed. can do.

Moreover, the watertight member 130 prevents the upper end of the insert member 120 from protruding from the outer circumferential surface of the PHC pile 100 after the insert member 120 is embedded in the PHC pile 100.

As described above, since the outer circumferential surface of the PHC pile 100 is formed as a curved surface and the top surface of the insert member 120 is formed as a flat straight surface instead of a curved surface, the insert member 120 embedded in the PHC pile 100 is embedded. The top end of the can not but stick out. Accordingly, the upper end portion of the insert member 120 protruding from the outer circumferential surface of the PHC pile 100 may be damaged by being impacted by the strip 10 or the like. In this case, it is possible to prevent the upper end of the insert member 120 from being damaged by an impact or the like by the watertight member 130 embedded in the concrete constituting the PHC pile 100 together with the insert member 120.

For reference, although not shown in the drawing, in order to prevent the upper end of the insert member 120 from protruding from the outer circumferential surface of the PHC pile 100, a non-curved straight surface may be formed on a portion of the outer circumferential surface of the PHC pile 100. have. That is, a flat straight surface rather than a curved surface may be formed on a part of the outer circumferential surface of the PHC pile 100, and the insert member 120 may be embedded in the straight surface.

Accordingly, in order to form a straight surface on a part of the outer circumferential surface of the PHC pile 100, a separate plate (not shown) for forming a straight surface on the outer circumferential surface of the PHC pile 100 inside the upper mold 212 is formed. Position it. Such a plate (not shown) may form a straight surface having a constant width along a length direction on a portion of the outer circumferential surface of the PHC pile 100 on the inner surface of the upper mold 212. In addition, since the insert member 120 should be inserted into the PHC pile 100, a position fixing bolt 220 for fixing the position of the insert member 120 embedded in the PHC pile 100 in a plate (not shown). Insert holes (not shown) are formed in which can be inserted. At this time, the number of insert holes (not shown) is preferably formed in the same number as the position fixing bolt hole 216 formed in the upper mold (212).

On the other hand, with reference to Figures 9 to 12, it will be briefly described a method for manufacturing a PHC pile for earth walls according to an embodiment of the present invention.

12 is a flow chart of a manufacturing method of a PHC file for a retaining wall according to an embodiment of the present invention.

First, the mold 210 is prepared (S110). In other words, the mold 210 is provided to provide a space in which concrete is poured in order to form the PHC pile 100 for the retaining wall. In this case, the mold 210 is separated into an upper mold 212 and a lower mold 214.

Next, a plurality of position fixing bolt holes 216 are formed at predetermined intervals along the length direction of the upper mold 212 (S120). For reference, in the following description, the position fixing bolt hole 216 is limited to being formed in the upper mold 212, but the position fixing bolt hole 216 is not the upper mold 212 but the lower mold ( 214 may be formed.

Next, the position fixing bolt 220 is inserted into the position fixing bolt hole 216 formed in the upper mold 212, and the position fixing bolt 220 and the insert member 120 are fastened (S130). In other words, with the insert member 120 disposed inside the upper mold 212, the position fixing bolt 220 is inserted through the position fixing bolt hole 216 on the outside of the upper mold 212. It is fastened with the insert member 120. At this time, the watertight member 130 is positioned between the position fixing bolt 220 and the insert member 120.

Next, the PC steel wire (not shown) is disposed inside the mold 210, and the spiral reinforcing wire (not shown) is wound (S140).

PC steel wire disposed inside the mold 210 is for prestressing the PHC pile 100 according to an embodiment of the present invention. In this case, a plurality of PC steel wires (not shown) are disposed at regular intervals along the circumference of the upper mold 212 in the longitudinal direction of the upper mold 212. On the other hand, spiral reinforcing bars (not shown) are wound around the periphery of the PC steel wire which is arranged in the mold 210. At this time, the spiral reinforcing bar is to give a shear force to the PHC pile 100 according to an embodiment of the present invention. For reference, the spiral rebar is welded to the PC steel wire through arc welding and a separate device such as generating a spark while winding the spiral steel wire around the PC steel wire.

Here, after the step of winding the spiral reinforcing wire around the PC steel wire (S140), the portion of the spiral reinforcing wire wound around the PC steel wire to interfere with the insert member 120 (cutting) (S150).

Specifically, interference with the position fixing bolt 220 and the insert member 120 inserted and fastened to the position fixing bolt hole 216 formed in the mold 210 among the spiral steel wire wound around the PC steel wire (not shown) There is no choice but to happen. When the spiral reinforcing bar is interfered by the position fixing bolt 220 and the insert member 120, a problem arises in that the spiral rebar is eccentric in one direction without being wound around the PC steel wire at a predetermined interval.

At this time, it is arrange | positioned around a PC steel wire (not shown) by cutting the spiral rebar arrange | positioned in the part which interferes with the position fixing bolt 220 and the insert member 120 among the spiral steel wire wound around the PC steel wire. The spiral rebar can be prevented from being eccentric in one direction. Here, the cutting of the spiral reinforcing the worker to determine the job report and then cut the spiral reinforcement arranged in the part where the operator interferes using a separate tool.

For reference, since the spiral rebar is welded with the PC steel wire, cutting of a portion of the spiral rebar does not release the welding of the PC steel wire and the spiral rebar or the position of the spiral rebar from the periphery of the PC steel wire.

Next, concrete is introduced into the mold 210 (S160). Here, the final check whether there is no eccentric portion of the spiral reinforcement located around the PC steel wire before the concrete is introduced into the mold 210. If there is an eccentric portion of the spiral reinforcement, the spiral reinforcing bar located in the eccentric portion is cut. After confirmation, the upper mold 212 is used to cover the lower mold 214 and then combine.

Then, after curing of the concrete is finished, remove the position fixing bolt 220 in the upper mold (212) (S170). In this case, the insert member 120 fastened to the position fixing bolt 220 is embedded in the PHC pile 100. Here, the hollow is formed inside the PHC pile 100 by the centrifugal force.

Then, after removing the position fixing bolt 220 from the upper mold 212, the mold 210 is demolded from the cured concrete (S180).

PHC pile 100 of the present invention by the above configuration, a mold assembly for manufacturing the same and a manufacturing method using the same, by the insert member and the insert hole by connecting the inside and the outside of the PHC pile body by a blow or ball During drilling, the pressure or groundwater applied to the PHC pile can be released from the inside of the PHC pile to the outside to prevent damage to the PHC pile.

In addition, the PHC pile 100 for the wall of the present invention, a mold assembly for manufacturing the same, and a manufacturing method using the same, since the insert member is embedded in the PHC pile, the construction of the wall wall without damaging the PHC file during construction of the wall wall It is easy to fasten the straps that support the PHC pile for construction.

In addition, the PHC pile 100 for the wall of the present invention, a mold assembly for manufacturing the same, and a manufacturing method using the same, the insert member and the watertight member on the outer peripheral surface of the PHC file is embedded in the PHC file body by being embedded in the PHC file body The upper end surface of the inserted insert member does not protrude, thereby preventing the insert member from being damaged by the impact.

As described above, one embodiment of the present invention has been described by specific embodiments such as specific components and the like, but the embodiments and the drawings are provided only to help a more general understanding of the present invention. The present invention is not limited thereto, and various modifications and variations can be made by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be limited to the described embodiments, but all of the claims below, as well as equivalent or equivalent modifications, will fall within the scope of the present invention.

100: PHC file for the retaining wall
110, 110-1: PHC file body
112: insert hole
120, 120-1, 120-2: insert member
122: protrusion
130: watertight member
200: mold assembly
210: mold
212: upper mold
214: lower mold
216: position fixing bolt hole
220: position fixing bolt

Claims (12)

In the PHC pile used for the construction of the wall,
A PHC file body in which a plurality of PC wires are embedded;
A plurality of insert holes formed at predetermined intervals along a length direction of the PHC pile body; And
It is installed in the insert hole, when manufacturing the PHC pile includes an insert member embedded in the concrete constituting the PHC pile body,
The insert member is provided in a nut structure of a metal material is inserted into the bolt used to fasten the strip to the PHC pile when constructing the wall wall,
One end portion of the insert member is formed so as not to cover the hole of the insert member so that both ends of the insert member protrude from the outer circumferential surface of the PHC pile body formed in a curved surface to prevent damage to one end of the insert member. Further comprising a watertight member made of synthetic resin material,
The watertight member is installed while being embedded with the insert member in the concrete in a state placed on one end of the insert member during the manufacture of the PHC pile, in the process of curing the concrete by centrifugal force during the manufacture of the PHC pile One surface of the watertight member is deformed along the outer peripheral surface of the PHC pile body so that it does not protrude from the outer peripheral surface of the PHC pile body PHC pile for wall walls.
delete The method of claim 1,
The insert hole is penetrated to connect the inside and the outside of the PHC pile body, and the insert member is provided in a nut structure, and both the side into which the bolt is inserted and the opposite side thereof are opened, so that the PHC pile body is installed at the construction of the wall. PHC pile for wall walls, characterized in that to prevent damage to the PHC pile body by releasing the air pressure or water pressure generated inside the PHC pile body.
delete The method of claim 1,
The plurality of insert holes is PHC pile for wall walls, characterized in that provided in a plurality of rows spaced along the circumferential direction of the PHC pile body.
delete delete The method of claim 1,
PHC pile for wall walls, characterized in that the protrusion is formed on the outer peripheral surface of the insert member to prevent the insert member embedded in the concrete from being separated from the concrete.
A mold assembly for producing PHC piles for mud walls,
A mold in which the upper mold and the lower mold are coupled to each other to provide a space in which concrete for pouring the PHC pile is poured;
A position fixing bolt which is fastened to an insert member disposed inside the mold to be embedded in the concrete, and fixes the position of the insert member in the process of pouring and curing the concrete; And
And a position fixing bolt hole inserted into the outside of the mold to penetrate the mold so as to be engaged with the insert member.
The insert member is provided in a nut structure of a metal material is inserted into the bolt used to fasten the strip to the PHC pile when constructing the wall wall,
In the process of pouring and curing the concrete, the concrete placed inside the mold is prevented from leaking out through the gap between the position fixing bolt and the position fixing bolt hole, and the outer peripheral surface of the PHC pile formed as a curved surface Synthetic resin which is provided at one end of the insert member so as not to cover the hole of the insert member so that both ends of the insert member protrude from the end of the insert member so as not to be damaged. Further comprising a watertight member of the material,
In the watertight member, during the curing of the concrete by centrifugal force, one surface of the watertight member is deformed along the outer circumferential surface of the PHC file so that the PHC file for the wall is manufactured from the outer circumferential surface of the PHC file. Mold assembly.
delete Providing a mold providing a space in which concrete is poured to form a PHC file for a retaining wall;
Forming a plurality of position fixing bolt holes at predetermined intervals along the longitudinal direction of the mold;
Inserting the position fixing bolt through the position fixing bolt hole at the outside of the mold in a state where the insert member is disposed inside the mold to fasten the insert member;
Arranging a plurality of PC steel wires inside the mold and winding spiral reinforcing wires around the plurality of PC steel wires;
Injecting concrete into the mold;
When curing of the concrete is completed, removing the position fixing bolt from the mold; And
Demolding the mold in the cured concrete;
The insert member is provided in a nut structure of a metal material is inserted into the bolt used to fasten the strip to the PHC pile when constructing the wall wall,
In the step of fastening the position fixing bolt with the insert member to prevent both ends of one end of the insert member protrudes with respect to the outer circumferential surface of the PHC pile formed in a curved surface to damage the one end of the insert member, A watertight member made of synthetic resin having a shape that does not cover the hole of the is placed between the fixing bolt and the insert member,
In the watertight member, during the curing of the concrete by centrifugal force, one surface of the watertight member is deformed along the outer circumferential surface of the PHC pile, so that the PHC pile for the wall wall is characterized in that it does not protrude from the outer circumferential surface of the PHC pile. Way.
The method of claim 11,
After the step of winding the spiral rebar,
Cutting a portion of the spiral bar that interferes with the insert member to prevent the spiral rebar from being eccentric in one direction by the insert member disposed inside the mold; Method for producing a PHC file for a wall wall, further comprising a.

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