KR102075437B1 - Composite phc pile for soil retaining wall - Google Patents

Abstract

Synthetic PHC pile for the wall wall according to the present invention, PHC pile used for the construction of the wall wall, PHC pile body in which a plurality of PC steel wire is embedded and the hollow portion extending in the longitudinal direction is formed; Reinforcing bar assembly is inserted into the hollow portion of the PHC pile body; A hollow concrete part formed by pouring concrete in a state where the reinforcing steel bar assembly is inserted into the hollow part; And a support plate connected to an upper end of the rebar assembly and disposed on an upper end of the PHC pile body.

Description

Composite PHC file for earthquake wall {COMPOSITE PHC PILE FOR SOIL RETAINING WALL}

The present invention relates to a composite PHC file for a retaining wall, and more particularly, to a composite PHC file for a retaining wall having improved rigidity and workability using a conventional PHC file.

In general, in the case of erecting a building or a structure, a foundation work is performed to reinforce the ground to support the upper structure according to the condition of the ground or the load of the structure.

At this time, in the case of hard ground having rigidity sufficient to support the structure of the ground in contact with the structure, the foundation is carried out directly to the ground. On the other hand, in the case of soft ground, the foundation work is carried out after the installation of pile or pile improvement to prevent ground subsidence. For reference, the soft ground is soft clay, loose sandy soil, organic soil, etc., which means that the ground itself cannot withstand the load transmitted from the structure constructed at the top or the predicted settlement amount exceeds the allowable value.

On the other hand, the pile is one of the basic forms employed when the depth of the support layer is high, it is to be able to stably support the weight of the structure in the support layer by building the upper structure on the pile inserted up to the support layer. Types of piles include concrete piles, steel pipe piles, expanded spun high strength concrete piles (PHC piles), and composition piles.

In general, large load construction such as plant plants use steel pipe piles or PHC piles because the driving depth of piles is very deep to the underground rock layers.

In this case, a steel pipe pile is used for a portion where axial rigidity is largely required, and a PHC pile is used for a relatively small axial rigidity. That is, the PHC pile is used in a structure with a large influence of the vertical force, and has an advantage of being more economical and constructable than steel pipe piles. On the other hand, steel pipe piles are generally used because of the greater resistance of steel pipe piles to PHC piles in structures with large influences of horizontal forces (shear forces) and bending moments such as earth pressure and supporting load.

However, the use of steel pipe piles can improve the resistance to horizontal forces and bending moments, but steel pipe piles are more expensive than PHC piles, resulting in an increase in the overall construction cost for foundation work.

Therefore, in recent years, in order to reduce the construction cost of the foundation work, an improved PHC pile has been developed which has improved resistance to horizontal forces and bending moments, that is, axial rigidity against ground.

Accordingly, the present applicant has been proposed the present invention to solve the above problems, and as related prior art documents, Korean Patent Publication No. 10-1636225 (name of the invention: lateral rigid reinforced internal reinforced concrete ICP File and its construction method, registration date: 2016.06.28.

It is an object of the present invention to provide a composite PHC file for a retaining wall that can greatly improve the rigidity and workability of a PHC file by filling a reinforcing bar assembly and concrete in the hollow portion of the PHC file.

It is also an object of the present invention to provide a composite PHC file for a retaining wall that can facilitate the coupling of the head reinforcement assembly that is coupled to the PHC file.

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, PHC pile used for the construction of the wall, PHC pile body is a plurality of PC steel wire is built-in and the hollow portion extending in the longitudinal direction is formed; Reinforcing bar assembly is inserted into the hollow portion of the PHC pile body; A hollow concrete part formed by pouring concrete in a state where the reinforcing steel bar assembly is inserted into the hollow part; And a support plate connected to an upper end of the rebar assembly and disposed at an upper end of the PHC pile body. It can be achieved by a synthetic PHC file for the wall wall including the.

The rebar assembly may be inserted into the hollow portion in a state in which the upper end thereof is coupled to the support plate.

The support plate may be formed with a concrete injection hole for placing concrete in the hollow portion.

The support plate has a plurality of through holes formed at positions corresponding to at least two of the plurality of PC nuts embedded in the upper end of the PHC pile main body, and is further connected to the connection member which is inserted through the through holes and fastened to the PC nuts. It may include.

The connecting member may include a body part inserted through the through hole and fastened to the PC nut; And a head extending upward from the body and exposed to the outside of the support plate and coupled to the head reinforcement assembly.

The connection member may have a head coupling groove in which the lower end of the head reinforcement assembly is inserted into the head to hold the position of the head reinforcement assembly.

The installation height of the head reinforcement assembly may be adjusted according to the fastening depth of the connection member and the PC nut.

The connecting member, the height adjustment bolt hole is formed in the head in the direction intersecting the head coupling groove, the fixing bolt is the height adjustment bolt hole in the state that the lower end of the head reinforcement assembly is inserted into the head coupling groove. By inserting through and fixing the position of the lower end of the head reinforcement assembly, it is possible to adjust the installation height of the head reinforcement assembly.

The connecting member may include a step portion for pressing the support plate against the upper end of the PHC file body in a state where the fastening is completed with the PC nut to firmly fix the support plate to the upper end of the PHC file body.

In addition, the present invention is a PHC pile used for construction of the wall, PHC pile body is formed with a plurality of PC steel wire hollow portion extending in the longitudinal direction; Reinforcing bar assembly is inserted into the hollow portion of the PHC pile body; A hollow concrete part formed by pouring concrete in a state where the reinforcing steel bar assembly is inserted into the hollow part; And a connecting member fastened to a PC nut embedded in an upper end of the PHC pile body and connected to the head reinforcement assembly.

The connecting member may include a body part coupled to the PC nut; And a head extending upward from the body and having a lower end coupled to the head reinforcement assembly.

The connection member has a head coupling groove in which the lower end of the head reinforcement assembly is inserted into the head to position the head reinforcement assembly, and according to the coupling depth of the connection member and the PC nut of the head reinforcement assembly. The installation height can be adjusted.

The composite PHC pile for the cladding wall of the present invention can facilitate the coupling of the PHC pile and the head reinforcement assembly by using a connecting member.

In addition, the PHC pile for earthquake wall of the present invention can improve the rigidity of the PHC pile by structurally integrating the reinforcing bar assembly inserted into the hollow portion of the PHC pile body and the support plate disposed on the upper end of the PHC pile body Therefore, the construction convenience of the PHC file can be improved.

In addition, the PHC file for the retaining wall of the present invention, by using a connecting member can easily adjust the installation height of the head reinforcement assembly coupled to the PHC file.

1 is a partially cutaway perspective view showing the configuration of a composite PHC file for a retaining wall according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the composite PHC file for a retaining wall shown in FIG. 1. FIG.
3 is a view for explaining the coupling of the composite PHC pile and the head reinforcement assembly for the retaining wall shown in FIG.
4 is a partial cross-sectional view of a portion 'A' shown in FIG. 3.
5 is a perspective view of the connecting member shown in FIG. 4.
6 and 7 are views for explaining a modification of the connecting member.
8 is a partially cutaway perspective view illustrating a configuration of a composite PHC file for a retaining wall according to another embodiment of the present invention.
9 is a view for explaining the coupling of the composite PHC pile and the head reinforcement assembly for the retaining wall shown in FIG.

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 synthetic PHC file (hereinafter referred to as "PHC file") for the wall according to the embodiments of the present invention.

1 is a partially cutaway perspective view showing the configuration of a composite PHC file for a wall, according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the composite PHC file for a wall, shown in Figure 1, Figure 3 is Figure 4 is a view for explaining the coupling of the composite PHC pile and the head reinforcement assembly for the retaining wall, Figure 4 is a partial cross-sectional view of the 'A' portion shown in Figure 3, Figure 5 is a perspective view and a view of the connecting member shown in Figure 4 6, 7 is a view for explaining a modified example of the connection member, FIG. 8 is a partial cutaway perspective view showing the configuration of a composite PHC file for a retaining wall according to another embodiment of the present invention and FIG. 9 is shown in FIG. It is a figure for demonstrating the coupling | bonding of the head reinforcement assembly with the synthetic PHC pile for a retaining wall.

First, referring to FIGS. 1 to 7, a PHC file 100 according to an embodiment of the present invention will be described.

1 to 7, PHC pile 100 according to an embodiment of the present invention is a PHC in which a plurality of PC steel wires 115 is embedded and a hollow portion 112 extending in the longitudinal direction is formed. File body 110; Rebar assembly 120 is inserted into the hollow portion 112 of the PHC pile body 110; It is connected to the upper end of the hollow concrete part 111 and the reinforcing reinforcing bar assembly 110 formed by pouring concrete in a state in which the reinforcing bar assembly 120 is inserted into the hollow part 112 and disposed at the upper end of the PHC pile body 110. It includes a support plate 130 is.

1 to 4, the PHC pile body 110 is formed by pouring concrete using a pre-tension method and then applying centrifugal force. At this time, the PHC pile body 110 is formed with a hollow portion 112 extending along the longitudinal direction of the PHC pile body 110 by the applied centrifugal force. For reference, the PHC pile body 110 is formed in a cylindrical shape extending in the longitudinal direction.

In addition, a band band 116 is formed at the upper end of the PHC pile body 110. The band band 116 is intended to prevent the top end of the PHC pile body 110, that is, the head, from being disturbed when the wall or floor is installed.

On the other hand, such a PHC pile body 110 has a plurality of PC nuts 113 and PC steel wires 115 are embedded.

The PC nut 113 and the PC steel wire 115 provide prestressed force to the PHC pile body 110 to provide strength against the compressive force, thereby improving the compressive force. The PC nut 113 and the PC steel wire 115 is provided in plural number at regular intervals inside the PHC pile body 110 is embedded in the PHC pile body 110 during the curing process of concrete. Meanwhile, referring to FIG. 4, one end of the PC steel wire 115 is provided with a protrusion having a shape larger than that of the PC steel wire 115, and the protrusion is inserted and fixed inside the PC nut 113.

1 and 2, the reinforcing bar assembly 120 is a portion inserted into the inside of the PHC pile body 110, that is, the hollow part 112.

At this time, the hollow concrete portion 111 formed by pouring concrete in a state where the reinforcing reinforcing bar assembly 120 is inserted into the hollow part 112 is formed. That is, the hollow concrete portion 111 refers to a state in which concrete is filled in the hollow portion 112 formed in the PHC pile body 110.

1 and 2, the rebar assembly 120 includes a first rebar 122 and a second rebar 124.

The first reinforcing bars 122 are provided in the form of general reinforcing bars, and the plurality of first reinforcing bars 122 are disposed at regular intervals in the longitudinal direction, that is, the longitudinal direction of the PHC pile body 110. In addition, the second reinforcing bar 124 is provided in the form of a general reinforcing bar like the first reinforcing bar 122, and a plurality of second reinforcing bars 124 are disposed at regular intervals in the width direction, that is, the horizontal direction of the PHC pile body 110. Here, the second reinforcing bar 124 is installed along the circumference of the first reinforcing bar 122 to fix the plurality of first reinforcing bars 122. In this case, the second rebar 124 is wound along the circumference of the first rebar 122 by various methods such as arc welding. For reference, the second reinforcing bars 124 may be formed in various shapes such as a circle and a quadrangle rather than a spiral shape around the first reinforcing bars 122 to bind the plurality of first reinforcing bars 122 to each other.

As described above, as the first rebar 122 is provided in the longitudinal direction of the PHC pile body 110 and the second rebar 124 is provided in the horizontal direction of the PHC pile body 110, the PHC pile body ( It is possible to improve the resistance to the bending moment and compression force of 110).

1 to 4, the support plate 130 is connected to the upper end of the rebar assembly 120. At this time, the support plate 130 is disposed on the upper end of the PHC pile body 110 in a state in which the rebar assembly 120 is coupled to the lower end.

The support plate 130 is disposed at the upper end of the PHC pile body 110 and exposed to the outside of the PHC pile body 110, and the reinforcing bar assembly 120 is coupled to the lower end of the support plate 130 to be hollow 112. It is placed inside the PHC file body 110 because it is inserted into. That is, since the support plate 130 and the reinforcing bar assembly 120 are structurally integrated, the rigidity of the PHC pile 100 may be improved, as well as the workability of the PHC pile 100 may be improved. For reference, the rebar assembly 120 is fixedly coupled to the support plate 130 using arc welding, spark welding, or the like.

In addition, the through plate 132 is formed in the support plate 130 at a position corresponding to the PC nut 113 embedded in the upper end of the PHC pile body 110. For reference, the through hole 132 is a plurality of at least two, preferably three or more PC nuts 113 of the plurality of PC nuts 113 buried in the upper end of the PHC pile body 110, a plurality of The through hole 132 is formed. The through holes 132 are formed at regular intervals along the periphery of the support plate 120, that is, around the periphery.

For reference, FIGS. 1 through 3 illustrate that nine through-holes 132 are formed, but are not necessarily limited thereto, and the number of PC nuts 113 embedded in the PHC pile body 110 or the PHC pile 100 is shown. It may vary depending on the shape of the head reinforcement assembly 10 is coupled to.

In addition, a concrete injection hole 134 is formed in the support plate 130. Concrete inlet 134 is a reinforcing bar assembly 120 to the hollow 112 of the PHC pile body 110 and the support plate 130 is coupled to the reinforcing bar assembly 120 at the upper end of the PHC pile body 110 In the disposed state, it is a kind of hole for injecting concrete into the hollow portion 112 of the PHC pile body 110.

The support plate 130 as described above is formed in a plate of a circular or ring (ring) shape. At this time, the thickness of the support plate 130 is preferably formed in consideration of the length of the connection member 140 because it should be connected to the PHC pile body 110 through the connection member 140 to be described later.

On the other hand, the diameter of the support plate 130 is preferably formed to the same diameter as the PHC pile body 110 so as not to protrude with respect to the outer peripheral surface of the PHC pile body 110. Because, as shown in Figure 3, since the PHC pile 100 is located on one side of the PHC pile 100, when the support plate 130 is formed to protrude with respect to the outer peripheral surface of the PHC pile body 110, This is because a gap is generated between the adjacently located PHC files 100.

1 to 5, the connection member 140 is fastened to the PC nut 113 embedded in the PHC pile body 110 through the through hole 132 of the support plate 130. In other words, the connecting member 140 has an upper end penetrating the through hole 132 of the supporting plate 130, but is exposed to the upper end of the supporting plate 130, and the lower end of the connecting member 140 is penetrating the supporting plate 130. It penetrates the ball 132 and engages with the PC nut 113. The connection member 140 includes a body 141 and a head 142.

The body 141 of the connection member 140 is inserted through the through hole 132 and fastened to the PC nut 113. Accordingly, a screw thread corresponding to the PC nut 113 is formed on the outer circumferential surface of the body portion 141. For reference, in FIGS. 4 and 5, the thread is formed only on a part of the body 141, but the thread may be formed on the entire part of the body 141. That is, the body portion 141 of the connecting member 140 means a PC nut fastening portion.

The head part 142 of the connection member 140 extends upward from the body part 141 to pass through the through hole 132 of the support plate 130, but a part thereof is exposed to the outside of the support plate 130. At this time, as shown in Figure 3, the head reinforcement assembly 10 is coupled to the head portion 142 of the connection member 140 exposed to the upper end of the support plate 130. That is, the head 142 of the connection member 140 means the head reinforcement assembly coupling portion.

Meanwhile, a head coupling groove 143 is formed in the head portion 142 of the connection member 140. The head coupling groove 143 is inserted into the lower end of the head reinforcement assembly 10, and holds the position of the inserted head reinforcement assembly 10. Conventionally, in order to couple the head reinforcement assembly 10 to the PHC pile 100, it was necessary to fix the position by using a separate device or the like, but the connection member 140 according to an embodiment of the present invention is As the head coupling groove 143 is formed, there is no need for a separate device for holding the head reinforcement assembly 10 coupled to the connection member 140, so that the wall or floor construction using the PHC pile 10 is performed. It is possible to improve the workability.

Here, the head reinforcement assembly 10 is formed of a plurality of rod-shaped reinforcing bars having a long shape in the longitudinal direction, the head coupling groove 143 into which the head reinforcement assembly 10 is inserted is also formed in a long shape in the longitudinal direction. It is preferable. Furthermore, the diameter of the head coupling groove 143 is preferably formed to be slightly larger or similar to the shape of the reinforcing rods constituting the head reinforcing assembly 10 because the head reinforcing assembly 10 of the reinforcing rod shape is inserted.

In addition, a height adjustment bolt hole 144 is formed in the head portion 142 of the connection member 140. In other words, the height adjustment bolt hole 144 is formed in the head portion 142 of the connection member 140 in a direction crossing the head coupling groove 143 formed in the head portion 142. The fixing bolt 150 is inserted into and fastened to the height adjusting bolt hole 144. At this time, the installation height for the PHC pile 100 of the head reinforcement assembly 10 can be adjusted according to the fastening depth of the fixing bolt 150.

On the other hand, as shown in Figure 3 to 6, the head reinforcement assembly 10 is coupled to the head coupling groove 143 of the head portion 142 exposed to the outside of the support plate 130. At this time, after adjusting to the coupling depth 'h' for the head coupling groove 143 of the head reinforcement assembly 10 and fastening the fixing bolt 150 to the height adjustment bolt hole 144. Then, when the fixing bolt 150 is fully fastened to the height adjusting bolt hole 144, the fixing bolt 150 pushes the head reinforcement assembly 10 positioned at the h height to contact the head coupling groove 143. By holding the head reinforcement assembly 10 inserted into the head coupling groove 143 is no longer moved to maintain the h height.

In general, PHC pile 100 according to an embodiment of the present invention is deeply ground ground. In addition, instead of using a single PHC file 100 when constructing a wall, a bottom surface, or the like, a plurality of ie, at least two or more PHC files 100 are used. At this time, the PHC file 100 is positioned lower or higher than the depth initially constructed by the external environment such as ground state or groundwater, and the position thereof is changed. Accordingly, the plurality of PHC files 100 ) Are different heights at the top. When the plurality of PHC piles 100 are arranged at different heights, there is a risk that problems occur in construction such as an earth wall, a bottom surface, and the like.

At this time, as described above, by adjusting the coupling depth of the connection member 140 and the PC nut 113 to adjust the installation height of the head reinforcement assembly 10 is coupled to the upper end of the PHC pile body 110, or the connection member PHC by adjusting the installation height of the head reinforcement assembly 10 coupled to the head coupling groove 143 of the connection member 140 using the height adjustment bolt hole 144 and the fixing bolt 150 formed in the 140. The height of the piles 100 can be adjusted constantly.

6 and 7, the stepped portion 146 may be formed on the connection member 140-1. Step 146 is for firmly fixing the support plate 130 is disposed on the upper end of the PHC pile body 110, PHC pile in the state that the connection member 140-1 is completed with the PC nut 113 is completed The support plate 130 is pressed against the upper end of the main body 110. Moreover, the support plate 130 may be prevented from moving or moving relative to the upper end of the PHC pile body 110.

The stepped portion 146 is formed on the outer circumferential surface of the head 142 of the connection member 140. For example, the stepped portion 146 may be formed to protrude in one side and the other direction on the outer circumferential surface of the head 142 of the connection member 140, or may be formed in the stepped shape protruding along the outer circumferential surface of the head 142. . For reference, the shape and size of the stepped portion 146 may vary depending on the diameter of the through hole 132 formed in the support plate 130.

Hereinafter, a method of forming the PHC file 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

First, the concrete is poured into a mold for manufacturing the PHC pile body 110 and cured by applying centrifugal force. At this time, the hollow portion 112 is formed by the centrifugal force applied to the PHC pile body 110.

Next, the rebar assembly 120 is inserted into the hollow portion 112. Here, the rebar assembly 120 is fixedly coupled to the lower end of the support plate 130 by welding. The rebar assembly 120 fixedly coupled to the support plate 130 is inserted into the hollow portion 112 of the PHC pile body 110, and the support plate 130 is disposed at the upper end of the PHC pile body 110. .

Then, the connection member 140 is fastened to the PC nut 113 through the through hole 132 formed in the support plate 130. In this case, the connection member 140 may or may not be fastened to a number corresponding to the PC nut 113 embedded in the PHC file body 110.

Next, the concrete inlet 111 is formed by filling concrete in the state where the reinforcing steel bar 120 is inserted into the hollow part 112 of the PHC pile body 110. At this time, the concrete is filled into the hollow portion 112 of the PHC pile body 110 through the concrete inlet 134 formed in the support plate 130.

For reference, the filling of the concrete may be made in the factory forming the PHC pile 100, or may be made separately in the PHC pile body 110 after moving the PHC pile 100 to the construction site. Specifically, the PHC pile body 110 is formed in the factory, and the PHC pile body 110 is installed after the support plate 130, the rebar assembly 120, and the connecting member 140 are installed in the PHC pile body 110. The hollow portion 112 of the concrete filled with PHC pile 100 may be moved to the construction site only construction, the support plate 130, reinforcing bar assembly 120 and connection to the PHC pile body 110 in the factory Install the member 140 and move the PHC pile 100 with the support plate 130, the rebar assembly 120 and the connecting member 140 to the construction site, and then the concrete inlet 134 of the support plate 130 Through the hollow portion 112 of the PHC pile body 110 may be filled with concrete. This is not necessarily limited, and may vary depending on the on-site situation or the builder who constructs the PHC file 100.

Finally, the upper portion of the PHC pile 100 formed as described above, that is, the head reinforcement assembly 10 is connected. At this time, the lower end of the head reinforcement assembly 10 is coupled to the connection member 140 through the head insertion groove 143 of the connection member 140 is positioned on the upper end of the PHC pile body 110. For reference, the installation height of the head reinforcement assembly 10 may be adjusted by adjusting the fastening depth of the connection member 140 to the PC nut 113, and the head coupling groove 143 into which the lower end of the head reinforcement assembly 10 is inserted. Height adjustment bolt hole 144 formed in the) and may be adjusted through the fixing bolt 150 is fastened to the height adjustment bolt hole 144.

By the above configuration, the composite PHC pile 100 for the clamboard wall according to the embodiment of the present invention is coupled to the PHC pile 100 and the head reinforcement assembly 10 by using the connection members 140 and 1401. It can be done easily.

In addition, the support wall PHC pile 100 of the present invention, the rebar assembly 120 is inserted into the hollow portion 112 of the PHC pile body 110 and the support disposed on the upper end of the PHC pile body 110 As the plate 130 is structurally integrated, the rigidity of the PHC pile 100 may be improved, and thus, the construction convenience of the PHC pile 100 may be improved.

In addition, the PHC pile 100 for the wall wall of the present invention, by using the connecting member 140, 140-1 can easily adjust the installation height of the head reinforcement assembly 10 coupled to the PHC pile 100. .

Meanwhile, referring to FIGS. 8 and 9, the PHC file 100-1 according to another embodiment of the present invention will be described based on differences from the above-described embodiment.

As shown in FIGS. 8 and 9, the PHC pile 100-1 according to another embodiment of the present invention includes a hollow portion 112 having a plurality of PC steel wires 115 embedded therein and extending in the longitudinal direction. The reinforcement reinforcing bar assembly 120 is inserted into the hollow portion 112 of the PHC pile body 110, the PHC pile body 110, the reinforcing bar assembly 120 is inserted into the hollow portion 112 The hollow concrete part 111 formed by pouring and the connection member 140 is fastened to the PC nut 113 embedded in the upper end of the PHC pile body 110 and connected to the head reinforcement assembly.

Here, the configuration of the PHC pile body 110, reinforcing bar assembly 120, hollow concrete portion 111 and the connecting member 140 of the PHC pile 100-1 according to another embodiment of the present invention described above Since it is substantially the same as the example, the same configuration and the same reference numerals are given to the same configuration, the description thereof will apply mutatis mutandis to the above-described embodiment.

As shown in FIGS. 8 and 9, the PHC file 100-1 according to another embodiment of the present invention uses only the rebar assembly 120 unlike the PCH file 100 according to the above-described embodiment. To be inserted into the hollow portion 112 of the PHC pile body 110.

In this case, even if the reinforcing bar assembly 120 is inserted into the hollow portion 112 of the PHC pile body 110 alone, it is preferable not to be exposed or protruded to the outside of the PHC pile body 110. Because, in the case of the PHC pile 100-1, the head reinforcement assembly 10 is coupled to the PHC pile 100-1 through the connecting member 140, the reinforcing bar assembly 120 is the PHC pile body 110 This is because the head reinforcement assembly 10 may be difficult to couple to the connection member 140 when exposed to the outside or protrudes.

8 and 9, the connection member 140 includes a body portion 141 and a head portion 142. Body portion 141 of the connecting member 140 is threaded on the outer circumferential surface is directly fastened with the PC nut 113, the head portion 142 of the connecting member 140 extends upward from the body portion 141 and The lower end of the head reinforcement assembly 10 is coupled. At this time, the connection member 140 is the body portion 141, that is, except the portion of the body portion 141 is fastened with the PC nut 113, the remaining portion of the body portion 141 and the head of the connection member 140 142 is exposed to the outside of the PHC file body 110.

Here, the head coupling groove 143 is formed in the head portion 142 of the connection member 140. In other words, the head reinforcement assembly 10 is coupled to the connection member 140 through a head coupling groove 143 formed in the head 142 exposed to the outside of the PHC pile body 110. The head coupling groove 143 positions the inserted head reinforcement assembly 10 so that the head reinforcement assembly 10 coupled with the connection member 140 is shaken or the head reinforcement assembly 10 is removed from the PHC pile 100-1. ) So that it does not fall out.

In addition, a height adjustment bolt hole 144 is formed in the head portion 141 of the connection member 140, and the fixing bolt 150 is inserted in a direction crossing the height adjustment bolt hole 144. The head reinforcement assembly 10 inserted into the head coupling groove 143 formed in the head 142 of the connection member 140 by the fixing bolt 150 inserted through the height adjustment bolt hole 144 is more rigid. I can catch you.

Here, the installation height of the head reinforcement assembly 10 is adjusted according to the coupling depth of the connecting member 140 and the PC nut 113, that is, the body portion 141 of the connecting member 140 to the PC nut 113. . For example, when the PHC pile 100-1 is constructed to a depth much lower than the ground, the body portion 141 of the connecting member 140 to the PC nut 113 is not deeply fastened. When 100-1) is constructed close to the ground, the deep reinforcement of the head reinforcement assembly 10 to the PHC pile 100-1 by fastening the body 141 of the connecting member 140 to the PC nut 113 deeply. Adjust the installation height. For reference, the height adjustment bolt hole 144 and the fixing bolt 150 may be used to adjust the installation height of the head reinforcement assembly 10.

By the above configuration, the composite PHC pile 100-1 for the wallboard according to another embodiment of the present invention is coupled to the PHC pile 100-1 and the head reinforcement assembly 10 by using the connecting member 140. It can be done easily.

In addition, the PHC pile 100-1 for the retaining wall of the present invention, by using the connection member 140 can easily adjust the installation height of the head reinforcement assembly 10 coupled to the PHC pile 100-1.

As described above, although one embodiment of the present invention has been described by specific matters such as specific components and limited embodiments and drawings, this is merely provided 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.

10: head reinforcement assembly
100, 100-1: composite PHC file for cladding walls
110: PHC pile body 111: concrete inlet
112: hollow part 116: PC nut
115: PC liner 116: Bandband
120: rebar assembly 122: first rebar
124: second reinforcing bar 130: support plate
132: through hole 134: concrete inlet
140, 140-1: connecting member 141: head part
142: body portion 143: head coupling groove
144: height adjustment bolt hole 146: step
150: fixing bolt

Claims (12)

In the PHC pile used for the construction of the wall,
A PHC pile body in which a plurality of PC steel wires are embedded and a hollow portion extending in the longitudinal direction is formed;
Reinforcing bar assembly is inserted into the hollow portion of the PHC pile body;
A hollow concrete part formed by pouring concrete in a state where the reinforcing steel bar assembly is inserted into the hollow part; And
A support plate connected to an upper end of the rebar assembly and disposed at an upper end of the PHC pile body,
The support plate is formed with a plurality of through-holes at positions corresponding to at least two of the plurality of PC nuts embedded in the upper end of the PHC pile body,
And a connection member inserted through the through hole and fastened to the PC nut.
The connecting member is inserted through the through hole body portion which is fastened to the PC nut; And a head extending upward from the body and exposed to the outside of the support plate and engaging with the head reinforcement assembly.
The connection member has a head coupling groove is formed in the head portion is inserted into the lower end of the head reinforcement assembly to hold the position of the head reinforcement assembly,
The connecting member has a height adjustment bolt hole formed in the head in the direction intersecting the head coupling groove, the fixing bolt is the height adjustment bolt hole in the state that the lower end of the head reinforcement assembly is inserted into the head coupling groove. By inserting and fastening through fixing the position of the lower end of the head reinforcement assembly, the PHC pile for the wall wall, characterized in that for adjusting the installation height of the head reinforcement assembly.
The method of claim 1,
The reinforcing bar assembly is a composite PHC pile for the wall wall, characterized in that the upper end is inserted into the hollow portion in the state coupled to the support plate.
The method of claim 2,
The support plate is a composite PHC pile for earth walls, characterized in that the concrete inlet for pouring concrete to the hollow portion is formed.
delete delete delete delete delete The method of claim 1,
The connecting member,
Comprising a step for pressing the support plate against the upper end of the PHC pile body in a state that the fastening is completed with the PC nut to firmly secure the support plate to the upper end of the PHC pile body PHC pile for wall .
In the PHC pile used for the construction of the wall,
A PHC pile body in which a plurality of PC steel wires are embedded and a hollow portion extending in the longitudinal direction is formed;
Reinforcing bar assembly is inserted into the hollow portion of the PHC pile body;
A hollow concrete part formed by pouring concrete in a state where the reinforcing steel bar assembly is inserted into the hollow part; And
A connection member fastened to the PC nut embedded in the upper end of the PHC pile body and connected to the head reinforcement assembly,
The connecting member includes a body portion coupled to the PC nut; And a head extending upward from the body and having a lower end coupled to the head reinforcement assembly.
The connecting member has a head coupling groove is formed in the head portion is inserted into the lower end of the head reinforcement assembly to hold the position of the head reinforcement assembly,
The connecting member has a height adjustment bolt hole formed in the head in the direction intersecting the head coupling groove, the fixing bolt is the height adjustment bolt hole in the state that the lower end of the head reinforcement assembly is inserted into the head coupling groove. By inserting and fastening through fixing the position of the lower end of the head reinforcement assembly, the PHC pile for the wall wall, characterized in that for adjusting the installation height of the head reinforcement assembly. delete delete

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