KR101848727B1 - Joint structure for PC column and joining method using the same - Google Patents

Abstract

The present invention relates to a joining structure for PC columns, and a construction method thereof. According to the present invention, the joining structure for PC columns comprises: a lower vertical reinforcing bar which is vertically arranged in a lower structure member, and has a lower joint protruding from an upper end of the lower structure member and having screw threads formed along an outer circumferential surface thereof; a grooved unit formed on a circumference of a lower end of a PC column; an upper vertical reinforcing bar which is vertically arranged in the PC column, and has an upper joint protruding from the lower end of the PC column to be positioned on the grooved unit and having screw threads formed along an outer circumferential surface thereof; a connection unit wherein a lower end thereof is screwed to the lower joint and an upper end thereof is screwed to the upper joint to connect the lower and the upper vertical reinforcing bar; and a mortar unit filled between the lower structure member and the PC column and in the grooved unit. Accordingly, the PC column can be firmly joined and joining work can be easily performed.

Description

[0001] The present invention relates to a joining structure of a PC column and a construction method thereof,

The present invention relates to a joining structure of a PC column and its construction method, and more particularly, to a joining structure of a PC column capable of firmly joining a PC column and facilitating joining work, and a construction method thereof will be.

A PC (Precast concrete) method is a method in which a part or all of a main structural member such as a column, a beam, or a slab is manufactured at a factory to assemble the structural members in the field.

The PC structural members are manufactured to expose a part of the reinforcing bars to the outside of the concrete for bonding to each other, and to connect the reinforcing bars of the members required to be joined in the field and to pour the concrete around the joints.

The joining of PC columns is generally done in the following way. The reinforcing bars of the PC column to be installed and the reinforcing bars of the existing members are longitudinally connected by using a cylindrical sleeve and then the mortar is poured around the reinforcing bars and the sleeves so that the mortar is filled between the inner peripheral surface of the sleeve and the outer peripheral surfaces of the reinforcing bars, Make it completely fixed.

However, since the PC column can not stand alone by connecting the reinforcing bars of the PC column to the reinforcing bars of the pre-installed member, it is necessary to support the PC column as a building material until the mortar is cured. If an external force is applied unexpectedly, the position or angle of the PC column may be changed.

On the other hand, since the column connected to the foundation is the reference of the structural members to be positioned at the upper part, it is necessary to precisely position and angle. In the case of the PC column, since the position and angle of the foundation are limited, The reinforcement of the foundation to be connected with the reinforcement of the column should be installed more accurately.

KR 10-2013-0109298 A

It is an object of the present invention to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of joining a PC column, The present invention provides a joining structure of a PC column that can accurately position and angle and a construction method thereof.

Also, it is intended to provide a joining structure of a PC column capable of accurately positioning the joining position and angle of the PC column on a foundation, and a construction method thereof.

According to a preferred embodiment of the present invention for solving the above-mentioned problems, a joining structure of a PC column for joining a PC column to an upper part of a lower structural member, A lower vertical reinforcing bar projecting from an upper end of the lower reinforcing bar and having a lower joint formed with threads along an outer circumferential surface thereof; A fin portion formed around the lower end of the PC column; An upper vertical reinforcing bar disposed vertically in the PC column and projecting from a lower end of the PC column and having an upper joint located at the fold and formed with threads along the outer circumference; A connecting portion connecting the lower vertical reinforcing bar and the upper vertical reinforcing bar by screwing the lower end portion to the lower joint portion and screwing the upper end portion to the upper joint portion; And a mortar part between the lower structural member and the PC column, and a mortar part filled in the coupling part.

According to another embodiment of the present invention, the connecting portion may include a connecting nut having a pipe shape and having the lower joint portion fastened to the lower joint portion and the upper joint portion fastened to the upper end portion, And a top nut fastened to the top end of the connecting nut and fastened to the top end of the connecting nut.

According to another embodiment of the present invention, a connection structure of the PC column is provided, wherein an inlet is formed in a wall surface of the connection nut.

According to another embodiment of the present invention, the joining structure of the PC column is provided, wherein the joining structure of the PC column is provided with three or more spaced apart portions.

According to another embodiment of the present invention, a second lower vertical steel bar vertically disposed in the lower structural member and having a second lower joint projecting from an upper end of the lower structural member; A second upper vertical steel bar vertically disposed in the PC column; And a sleeve inserted into the second lower joint at a lower end thereof and having a lower end inserted into the upper end of the second upper vertical bar to connect the second lower vertical bar to the second upper vertical bar, The joining structure of the PC column is provided.

According to another embodiment of the present invention, there is provided a joining structure of a PC column, characterized by further comprising a horizontal plate-shaped bed block disposed between the lower structural member and the PC column and passing through the lower joining portion.

According to another embodiment of the present invention, an opening is formed at the center of the bed block.

According to another embodiment of the present invention, the lower structural member may further comprise a base frame portion having a base and a hexahedral frame-shaped base frame coupled to a lower end of the lower vertical bar to adjust the position and angle of the lower vertical bar A joining structure of the PC column is provided.

According to another embodiment of the present invention, the base frame portion includes a rectangular frame-shaped upper frame to which a lower end portion of the lower vertical reinforcing bar is engaged, a lower frame having a rectangular frame shape spaced apart from the lower portion of the upper frame, A plurality of vertical members connecting the frame and the lower frame, and adjusting means for adjusting the position and angle of the upper frame relative to the vertical member.

According to another embodiment of the present invention, the adjusting means includes a plurality of horizontal first slots formed on the upper frame, a vertical second slot formed on each of the vertical members, A bolt passing through the two holes, and a nut fastened to the bolt. The joining structure of the PC column is provided.

According to another embodiment of the present invention, a lower vertical bar is vertically disposed in a lower structural member, the lower vertical bar protruding from an upper end of the lower structural member and having a lower joint threaded along an outer peripheral surface thereof; A fin portion formed around the lower end of the PC column; An upper vertical reinforcing bar disposed vertically in the PC column and projecting from a lower end of the PC column and having an upper joint located at the fold and formed with threads along the outer circumference; A connecting portion connecting the lower vertical reinforcing bar and the upper vertical reinforcing bar by screwing the lower end portion to the lower joint portion and screwing the upper end portion to the upper joint portion; And a mortar part which is filled between the lower structural member and the PC column, and the mortar part is filled in the frame part. In the method of constructing the joining structure of the PC column, ; Placing a PC column on the lower structural member; A coupling step of screwing the lower joint part to a lower end of the coupling part and screwing the upper joint part to an upper end of the coupling part; And forming a mortar part between the lower structural member and the PC column, and filling the mortar part with the mortar part.

According to another embodiment of the present invention, the connection part is coupled to the lower joint or the upper joint before the step of arranging the PC column.

According to another embodiment of the present invention, the connecting portion may include a connecting nut having a pipe shape and having the lower joint portion fastened to the lower joint portion and the upper joint portion fastened to the upper end portion, Wherein the lower nut is fastened to the lower joint before the step of arranging the PC column and the upper nut is fastened to the upper joint before the step of arranging the PC column, The connection nut is coupled to the upper joint portion and the connection nut is coupled to the lower joint portion or the upper joint portion so that the lower joint portion is fastened to the lower end portion of the connection nut by vertically moving the connection nut And the upper end of the connecting nut has a first connecting end And a second connecting step of bringing the lower nut into close contact with the lower end of the connecting nut and closely fitting the upper nut to the upper end of the connecting nut. .

According to another embodiment of the present invention, the lower structural member includes a second lower vertical reinforcing bar vertically disposed in the lower structural member and having a second lower joint projecting from the upper end of the lower structural member, And a second upper vertical steel bar disposed in the column, wherein the second lower vertical steel bar and the second upper vertical steel bar in the PC column placing step are formed such that the second lower joining portion is inserted into the lower end portion, And a lower end of the vertical reinforcement is connected by a sleeve into which the lower end of the vertical reinforcement is inserted.

According to another embodiment of the present invention, a bed block installation step of installing a horizontally-plate-shaped bed block passing through the lower joint part on the lower structural member is provided between the lower structural member installing step and the PC column placing step The method of claim 1,

According to another embodiment of the present invention, the lower structural member includes a rectangular frame-shaped upper frame to which a lower end portion of the lower vertical reinforcing bar is engaged, a lower frame in a rectangular frame- Further comprising a plurality of vertical members connecting the upper frame and the lower frame and a base frame unit having adjustment means for adjusting the position and angle of the upper frame relative to the vertical member, A base frame part seating step of placing the base frame part coupled with the lower end of the lower vertical reinforcing bar on the ground; Placing an abandoned concrete around the lower frame and the vertical member so that an upper end of the vertical member protrudes to an upper portion of the abandoned concrete; Adjusting the position and angle of the upper frame with respect to the vertical member by the adjusting means; And a foundation concrete pouring step for pouring foundation concrete onto the top of the abandoned concrete, wherein an upper end of the lower vertical reinforcement protrudes to the upper part of the foundation concrete.

According to the joining structure of the PC column according to the present invention, since the PC column can be self-supporting during joining of the PC column, a construction material for supporting the PC column is not required. Thus, the joining operation of the PC column can be facilitated.

The joining of the PC column is made solid by the connecting part composed of the connecting nut, the lower nut and the upper nut, and the inlet port is formed in the middle of the connecting nut so that the mortar can be introduced into the connecting nut, can do.

In the case where the lower structural member located at the lower portion of the PC column is the base, if the PC column connection structure further includes the base frame portion, it is possible to install the position and angle of the lower structural member with high accuracy.

1 is an exploded perspective view of a PC column joint structure according to the present invention,
FIG. 2 is a cross-sectional view of a lower structural member and a PC column joined by the PC column-
3 is an explanatory diagram of a base frame portion constituting the PC columnar connection structure,
FIG. 4 is a flow chart of a method of constructing a PC column joint structure according to the present invention,
FIG. 5 is an explanatory diagram of a construction method of the PC column-
FIG. 6 is an explanatory view of a connection step constituting the method of constructing the PC column joint structure,
FIG. 7 is a flowchart showing a construction method of a PC column joint structure in a case where a lower structural member constituting the PC column joint structure is a base;
FIG. 8 is an explanatory view of a step of installing a substructure constituting a method of constructing the PC column joint structure. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in order to obscure or obscure the technical idea of the present invention due to the detailed description of the known structure in describing the present invention, the description of the structure of the above known structure will be omitted.

The present invention relates to a joining structure of a PC column for joining a PC column (3) to an upper portion of a lower structural member (2). The lower structural member 2 may be a column or a foundation and may be a PC (Precast Concrete) column or a field production column when the lower structural member 2 is a column.

FIG. 1 is an exploded perspective view of a PC column connection structure 1 according to the present invention. In FIG. 2, a bottom structure member 2 and a PC column connection structure 1, which are joined by the PC column connection structure 1, Sectional view is shown.

The PC column connection structure 1 according to the present invention mainly comprises a lower vertical reinforcing bar 10, a fin portion 20, an upper vertical reinforcing bar 30, a connecting portion 40 and a mortar portion 50.

The lower vertical reinforcing bar 10 is a vertical reinforcing steel which is placed on the lower structural member 2 and has a lower joint 11 protruding from the upper surface of the lower structural member 2 at the upper end. A thread is formed along the outer circumferential surface of the lower joint 11. [

The fringe portion 20 is an empty space formed around the lower end of the pillar post 3 and has a shape widened from the outer surface of the pillar post 3. As shown in FIG. 1, the pull-in portions 20 may be formed at intervals around the lower end of the PC column 3, or may be formed around the lower end of the PC column 3.

The upper vertical reinforcing bar 30 is a vertical reinforcing bar to be laid on the pillar column 3 and has an upper joint 31 protruding from the lower end of the pillar column 3 at the lower end and located in the pillar 20. [ A thread is formed on the outer circumferential surface of the upper joint 31 as well as the lower joint 11.

The connecting portion 40 serves to connect the lower vertical steel bar 10 of the lower structural member 2 and the upper vertical steel bar 30 of the PC column 3. [ That is, the connecting portion 40 is formed in the shape of a long nut and the lower end portion is screwed to the lower joint portion 11 of the lower vertical steel bar 10 and the upper end portion is screwed to the upper joint portion 31 of the upper vertical steel bar 30 The lower vertical steel bar 10 and the upper vertical steel bar 30 are integrated in the longitudinal direction.

The mortar portion 50 is filled between the lower structural member 2 and the PC column 3 and into the coupling portion 20 to completely integrate the lower structural member 2 and the PC column 3, 11, the upper joint portion 31, and the connecting portion 40 are not exposed to the outside.

The joining structure of the PC column according to the present invention is as follows. After connecting the lower vertical steel bar 10 of the lower structural member 2 and the upper vertical steel bar 30 of the PC column 3 with the connection part 40, The upper vertical reinforcing bar 30 connected to the lower vertical reinforcing bar 10 by the connecting portion 40 is placed in the longitudinal direction or the radial direction with respect to the lower vertical reinforcing bar 10. [ It is possible that the PC column 3 is allowed to stand on the lower structural member 2 even before the mortar is cured. Therefore, there is no need to provide a temporary support for temporarily supporting the PC column 3 during the construction of the joining structure of the PC column, and the PC column 3 is unexpectedly moved by an external force such as a working load applied to the PC column 3, There is no possibility that the position or angle of the light guide plate is changed.

The connecting operation of the lower vertical reinforcing bar 10 and the upper vertical reinforcing bar 30 by the connecting portion 40 is performed in the fitting portion 20 where the upper joining portion 31 of the upper vertical reinforcing bar 30 is located It is possible for an operator to easily approach the pulling portion 20 and connect the lower vertical reinforcing bar 10 and the upper vertical reinforcing bar 30 because the pulling portion 20 is located around the pillar 3.

The upper joint 31 protrudes outside the PC column 3 but is not located outside the bottom or outermost side of the PC column 3 because it is located in the drawer 20 so that the PC column 3 is stored There is little risk that the upper joint 31 will be damaged by a collision or the like.

The connection portion 40 may include a connection nut 41, a lower nut 42, and an upper nut 43 in more detail.

The connecting nut 41 is formed in the shape of a pipe having a through hole at its center, and the lower joint portion 11 is fastened to the lower end portion and the upper joint portion 31 is fastened to the upper end portion. The lower nut 42 is fastened to the lower joint 11 and is stuck to the lower end of the coupling nut 41. The upper nut 43 is fastened to the upper joint portion 31 and is brought into close contact with the upper end of the connection nut 41.

In the connecting portion 40, the connecting nut 41 serves to connect the lower vertical reinforcing bar 10 and the upper vertical reinforcing bar 30 in the longitudinal direction. The lower nut 42 and the upper nut 43 prevent the connecting nut 41 from moving in the longitudinal direction with respect to the lower vertical bar 10 or the upper vertical bar 30. That is, the lower nut 42 prevents the connection nut 41 from moving downward along the lower vertical bar 10 and the upper vertical bar 30, and the upper nut 43 prevents the connection nut 41 from moving Thereby preventing upward movement along vertical reinforcement 10 and upper vertical reinforcement 30. Thus, the connection between the lower vertical reinforcing bar 10 and the upper vertical reinforcing bar 30 becomes more rigid.

An inlet port 41a may be formed in the wall surface of the connection nut 41. [

The mortar is introduced into the internal space of the connecting nut 41 when the mortar portion 50 is formed through the inlet port 41a so that the lower joint portion 11 and the upper joint portion 31, And between the outer circumferential surface of the lower joint portion 11 and the inner circumferential surface of the connecting nut 41, the mortar is filled. The mortar cured in the connection nut 41 enhances the bonding force between the lower vertical reinforcing bars 10 and the upper vertical reinforcing bars 30 and completely blocks the movement of the upper vertical reinforcing bars 30 with respect to the lower vertical reinforcing bars 10.

It is preferable that at least three portions of the drawer portion 20 are formed around the lower end of the PC column 3 with an interval therebetween.

When three or more fins 20 are formed so that the lower vertical reinforcing bars 10 and the upper vertical reinforcing bars 30 are connected at three or more places by the connecting portions 40, It is possible to effectively prevent the PC column 3 from being conducted.

In the case where the PC column 3 has a circular cross-section, it is preferable that at least three wave columns 20 are formed at regular intervals. If the PC column 3 has a rectangular cross-section, It is preferable that the protrusions are formed at the respective corner portions of the substrate 3.

The joining structure of the PC column according to the present invention may further include a second lower vertical steel bar 60, a second upper vertical steel bar 70 and a sleeve 80.

The second lower vertical reinforcing bar 60 indicates a vertical reinforcing bar other than the lower vertical reinforcing bar 10 among the vertical reinforcing bars of the lower structural member 2 and a second lower joining portion 61 projecting from the upper end of the lower structural member 2 . The second lower joint 61 is not specially worked.

And the second upper vertical steel bar 70 indicates a vertical steel bar other than the upper vertical steel bar 30 among the vertical steel bars of the PC column 3. [

The sleeve 80 has a cylindrical shape with a through hole at its center. The sleeve 80 has a second lower joint 61 inserted into the lower end thereof and a lower end inserted into the upper end of the second upper vertical bar 70, 60 and the second upper vertical reinforcing bars 70 are connected in the longitudinal direction. As the sleeve 80, a general sleeve used for longitudinally connecting the vertical reinforcing bars may be used.

The second lower joint portion 61 and the lower end portion of the second upper vertical steel bar 70 are simply inserted into the sleeve 80 in the longitudinal direction so that the second lower vertical steel bar 60 and the second upper vertical steel bar 70 can be easily You can connect. The coupling force of the second lower vertical reinforcing bar 60 and the second upper vertical reinforcing bar 70 by the sleeve 80 is weaker than the joining force of the lower vertical reinforcing bar 10 and the upper vertical reinforcing bar 30 by the connecting portion 40 Since the PC column 3 can sufficiently stand by the rigid joining of the lower vertical steel bar 10 and the upper vertical steel bar 30, the second lower vertical steel bar 60 and the second upper vertical steel bar 70 You do not need to connect more solidly.

The joining structure of the PC column according to the present invention may further include a bed block 90.

The bed block 90 is disposed between the lower structural member 2 and the column 3 and is made of a horizontal metal plate. A plurality of through holes are formed in the bed block 90 so that the lower joint part 11 and the second lower joint part 61 of the lower structural member 2 can pass through.

The top surface of the bed block 90 is flat without irregularities, so that the pillars 3 can be stably placed on the lower structural member 2. The positions of the lower joint portion 11 and the second lower joint portion 61 protruding from the lower structural member 2 can be accurately aligned by the positions of the through holes.

An opening is formed at the center of the bed block 90 so that the mortar can pass through the mortar so that the mortar can be filled between the lower structural member 2 and the column 3. Accordingly, the integrity of the concrete of the lower structural member 2 and the concrete of the column concrete can be prevented from being lowered by the bed block 90.

In the case where the substructure member 2 is the base, the joining structure of the PC column 3 according to the present invention may further include the base frame portion 100. [ 3 is an explanatory view of the base frame part 100. As shown in Fig.

The base frame portion 100 is a hexahedral frame-shaped member that is coupled to a lower end portion of the lower vertical reinforcing bar 10, so that the position and angle of the lower vertical reinforcing bar 10 can be adjusted. This makes it possible to more accurately construct the substructure member 2 as a foundation to be the basis for the structural members to be positioned above the foundation.

The base frame portion 100 includes an upper frame 110, a lower frame 120, a plurality of vertical members 130, and adjustment means in more detail.

The upper frame 110 is a rectangular frame-shaped member arranged horizontally, and the lower vertical reinforcing bars 10 and the lower ends of the second lower vertical reinforcing bars 60 are joined. The lower frame 120 is a horizontally arranged rectangular frame-shaped member and is disposed at a lower portion of the upper frame 110. The upper frame 110 and the lower frame 120 are connected by a plurality of vertical members 130. The adjustment means allows adjustment of the position and angle of the upper frame 110 with respect to the vertical member 130.

The lower frame 120 determines the position of the foundations when laying down the underlying concrete, and the upper frame 110 more accurately determines the location of the foundations when constructing the foundation concrete. That is, in the process of constructing the lower structural member 2 as a foundation, the lower frame 120 and the lower end of the vertical member 130 are fixed at a fixed position by the abandoned concrete, The position and angle of the frame 110 can be adjusted again and the foundation structure 2 can be installed with high accuracy by placing the foundation concrete.

In addition, when the foundation concrete is laid, the lower vertical steel bar 10 and the second lower vertical steel bar 60, which are joined to the lower end of the upper frame 110, are also embedded in the foundation concrete in addition to the upper frame 110, The reinforcing bars 10 and the second lower vertical reinforcing bars 60 are positioned and angled together with the upper frame 110.

More specifically, the adjusting means comprises a first long hole 141, a second long hole 142, a bolt 143 and a nut 144.

A plurality of holes are formed in the upper frame 110 as long holes in the horizontal direction. The second elongated holes 142 are elongated holes formed in the vertical direction. As shown in FIG. The bolt 143 passes through the first long hole 141 and the second long hole 142 and the nut 144 is fastened to the bolt 143.

This adjusting means adjusts the position and angle of the upper frame 110 with respect to the vertical member 130 in the following manner. That is, after the vertical member 130 and the upper frame 110 are assembled by the bolts 143 and the nuts 144, the positions of the bolts 143 are adjusted on the first and second long holes 141 and 142 And the nut 144 is completely fastened to the bolt 143 to fix the position and angle of the upper frame 110 to the vertical member 130 at a constant level. If the position of the bolt 143 is adjusted on the first long hole 141 and the position of the bolt 143 is adjusted on the second long hole 142, 110 are adjusted in the vertical direction. The angle of the upper frame 110 is adjusted by changing the positions of the bolts 143 on the respective second long holes 142.

Hereinafter, a construction method of the PC column joint structure according to the present invention will be described. The construction method of the PC column joint structure according to the present invention will be described while omitting the detailed description of the joint structure of the PC column.

The method for constructing the PC column joint structure according to the present invention includes a substructure installation step S10, a PC column placement step S20, a connection step S30, and a mortar part formation step S40. FIG. 4 is a flowchart illustrating a method of constructing a PC column joint structure according to the present invention.

In the substructure installation step S10, the substructure member 2 is installed. The lower joint 11 formed at the upper end of the lower vertical bar 10 at the time of installing the lower structural member 2 is installed to protrude from the upper end of the lower structural member 2. [ When the lower structural member 2 is a member to be installed in the field, the concrete is laid from the lower vertical reinforcing bar 10 to a position below the lower joint 11, When the lower structural member 2 is a PC member, the lower structural member 2 is manufactured in a state where the upper end of the lower vertical reinforcing bar 10 is located outside the formwork, May protrude from the upper end of the lower structural member 2.

As shown in Fig. 5 (a), in the PC column placing step S20, the PC column 1 is placed on the lower structural member 2 in such a manner that the positions on the plane of the lower structural member 2 and the PC column 3 coincide with each other 3). The upper joint 31 of the upper vertical bar 30 at the seated PC column 3 protrudes from the lower end of the PC column 3 and is positioned in the drawer 20. [

5 (b), the lower joint portion 11 of the lower structural member 2 is screwed to the lower end portion of the joint portion 40, and the upper end portion of the joint portion 40 The upper joint portion 31 of the PC column 3 is screwed. Since the PC column 3 can stand on the lower structural member 2 after connecting the lower structural member 2 and the PC column 3 with the connection portion 40, the PC column 3 can be supported You do not have to.

5 (c), mortar is poured between the lower structural member 2 and the column 3 and into the fulcrum portion 20 to form the mortar portion 50 ). As described above, since the PC column 3 can be self-supported by the connecting portion 40, the mortar pouring operation can be facilitated, and the mortar bonding force can be prevented from weakening due to the movement of the PC column 3 during mortar curing can do. When the curing of the mortar is completed, the substructure member 2 and the PC column 3 are completely integrated.

The connecting portion 40 is preferably coupled to the lower or upper joint 11 or the upper joint 31 prior to the step of arranging the PC column.

Since the lower vertical bar 10 of the lower structural member 2 and the upper vertical bar 30 of the PC column 3 substantially abut each other after the PC column 3 is seated on the lower structural member 2, (11) may be difficult to fasten to the upper joint (31). Accordingly, the connection portion 40 is fastened to the lower joint portion 11 or the upper joint portion 31 before the columnar arrangement step S20, and the connection portion 40 is changed in the connection step S30, 40 can be fastened to both the lower joint 11 and the upper joint 31. It is not necessary to separately store or manage the connection portion 40 when the connection portion 40 is coupled to the lower vertical bar 10 or the upper vertical bar 30.

The connection nut 41 and the like are connected to the lower joint 11 and the upper joint 43 before the PC column arranging step S20, (31). That is, the lower nut 42 is coupled to the lower joint 11, the upper nut 43 is coupled to the upper joint 31, and the connection nut 41 is coupled to the lower joint 11 or the upper joint 43, (31).

In this case, the connecting step S30 includes a first connecting step S31 and a second connecting step S32.

In the first connecting step S31, as shown in FIG. 6A, the connecting nut 41 is moved up and down so that the lower joint 11 is inserted into the lower end of the connecting nut 41 And the upper joint portion 31 is inserted into the upper end portion of the connecting nut 41. When the connecting nut 41 is coupled to the lower joint 11 before the PC column placing step S20, the connecting nut 41 is moved upward in the first connecting step S31 and the PC column placing step S20 The coupling nut 41 should be moved downward in the first coupling step S31 when the coupling nut 41 is coupled to the upper coupling part 31. [

6 (b), the lower nut 42 is brought into close contact with the lower end of the connecting nut 41, and the upper nut 43 is fastened to the lower end of the connecting nut 41 And is brought into close contact with the upper end portion. Accordingly, the connecting nut 41 can be firmly held in the state of joining the lower vertical steel bar 10 and the upper vertical steel bar 30 without moving up and down.

When the substructure member 2 includes the second lower vertical steel bars 60 and the PC column 3 includes the second upper vertical steel bars 70, The reinforcing bars 60 and the second upper vertical bars 70 may be connected by a general sleeve.

The connection of the second lower vertical steel bar 60 and the second upper vertical steel bar 70 by the sleeve 80 is achieved by simply connecting the second lower vertical steel bar 60 and the second upper vertical steel bar 70 to the sleeve 80, Since the columnar column 3 can be placed on the lower structural member 2 in the longitudinal direction. The sleeve 80 is connected to the lower end of the second upper vertical steel bar 70 at the time of manufacturing the pillar post 3 and is prepared to be embedded in the concrete so as to be moved and disposed together with the pillar post 3, .

The bed block installing step S15 may be further performed between the substructure member 2 and the PC column placing step S20.

In the bed block installing step S15, a horizontally plate-shaped bed block 90 through which the lower joint 11 penetrates is provided at the upper part of the lower structural member 2. [ The upper end surface of the lower structural member 2 on which the PC column 3 is to be disposed is made flat without irregularities and the lower joint member 11 and the second lower joint member 61 of the lower structural member 2 It can be positioned in the correct position.

Alternatively, the installation of the bed block 90 may be performed during the substructure installation step S10.

In the case where the lower structural member 2 is a base, the joining structure of the PC column further includes the base frame part 100, and the lower structural member installation step S10 includes a base frame part seating step S11, Step S12, adjustment step S13, and placement of foundation concrete S14. Fig. 7 shows a flow chart of the method of constructing the PC column joint structure according to the present invention in such a case.

In the base frame section seating step S11, the base frame section 100 in a state where the lower vertical reinforcing bars 10 and the lower ends of the second lower vertical reinforcing bars 60 are engaged is seated at a predetermined position on the ground. At this time, the upper frame 110 of the base frame 100 preferably has a state of being assembled with respect to the vertical member 130.

8 (a), in the casting concrete pouring step S12, the pouring concrete C1 is poured around the lower frame 120 of the base frame part 100 and the vertical member 130, So that the base frame part 100 is fixed at a predetermined position. The abandoned concrete C1 is pushed up to a height below the upper end of the vertical member 130 so that the position and angle of the upper frame 110 relative to the vertical member 130 can be adjusted in a subsequent step.

8 (b), the position and angle of the upper frame 110 with respect to the vertical member 130 are adjusted by the adjusting means so that the lower vertical bar 10 and the second lower Allow vertical reinforcement 60 to be positioned with the correct position and angle. After adjusting the position and angle of the upper frame 110, the upper frame 110 is fully assembled with respect to the vertical member 130.

As shown in FIG. 8 (c), the foundation concrete 2 is laid on the upper part of the abandoned concrete C1 to finish the installation of the lower structural member 2 in the foundation concrete pouring step S14. The upper vertical reinforcing bars 10 and the upper ends of the second lower vertical reinforcing bars 60 are protruded to the upper portion of the foundation concrete C2 in the foundation concrete pouring step S14, So that it can be connected to the second upper vertical steel bar 70.

According to the step S10 of installing the lower structural member, the positions and angles of the lower vertical reinforcing bars 10 and the second lower vertical reinforcing bars 60 are determined in two steps of the base frame seating step S11 and the adjusting step S13 It is possible to form the position and angle of the substructure member 2 very accurately.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be obvious that various modifications may be made within the scope of technical thought. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

1: joining structure of PC column 2:
3: PC column 10: Lower vertical bar
11: lower joint part 20:
30: upper vertical bar 31: upper joint
40: connection part 41: connection nut
41a: inlet port 42: lower nut
43: upper nut 50: mortar portion
41a: inlet port 60: second lower vertical bar
61: second lower joint 70: second upper vertical bar
80: Sleeve 90: Bed block
100: base frame part 110: upper frame
120: lower frame 130: vertical member
141: 1st slot 142: 2nd slot
143: Bolt 144: Nut
S10: Substructure member installation step S11: Foundation frame part seating step
S12: Putting out forbidden concrete S13: Adjusting step
S14: Placing of foundation concrete S15: Step of installing a bed block
S20: PC column arrangement step S30: Connection step
S31: First connection step S32: Second connection step
S40: Mortar part forming step (S40)

Claims (16)

In the joining structure of the PC column for joining the PC column to the upper part of the lower structural member,
A lower vertical reinforcing bar vertically disposed in the lower structural member, the lower vertical reinforcing bar protruding from the upper end of the lower structural member and having a lower joint threaded along the outer peripheral surface;
A fin portion formed around the lower end of the PC column;
An upper vertical reinforcing bar disposed vertically in the PC column and projecting from a lower end of the PC column and having an upper joint located at the fold and formed with threads along the outer circumference;
A connecting portion connecting the lower vertical reinforcing bar and the upper vertical reinforcing bar by screwing the lower end portion to the lower joint portion and screwing the upper end portion to the upper joint portion; And
And a mortar part which is filled between the lower structural member and the PC column and in the coupling part,
Wherein a base frame portion of a hexahedron frame shape for adjusting the position and angle of the lower vertical reinforcing bars is coupled to a lower end portion of the lower vertical reinforcing bars,
The base frame portion includes a rectangular frame-shaped upper frame to which a lower end portion of the lower vertical reinforcing bar is engaged, a rectangular frame-shaped lower frame spaced apart from the lower portion of the upper frame, And adjusting means for adjusting the position and angle of the upper frame relative to the vertical member and the vertical member.
The method according to claim 1,
The connecting portion
A connecting nut having a pipe shape and fastened to the lower joint at the lower end and fastened at the upper end to the upper joint,
A lower nut fastened to the lower joint and closely attached to a lower end of the connection nut,
And an upper nut fastened to the upper joint and closely attached to an upper end of the connection nut.
3. The method of claim 2,
Wherein an inlet is formed in a wall surface of the connection nut.
The method according to claim 1,
Wherein at least three spacers are formed with a gap therebetween.
The method according to claim 1,
A second lower vertical reinforcing bar vertically disposed in the lower structural member and having a second lower joint protruding from an upper end of the lower structural member;
A second upper vertical steel bar vertically disposed in the PC column; And
And a sleeve inserted into the second lower joint at a lower end thereof and having a lower end portion of the second upper vertical reinforcement inserted into the upper end thereof to connect the second lower vertical reinforcement to the second upper vertical reinforcement, Joining structure of columns.
The method according to claim 1,
And a horizontal plate-shaped bed block disposed between the lower structural member and the PC column and penetrating the lower joint portion.
The method according to claim 6,
And an opening is formed at the center of the bed block.
delete delete The method according to claim 1,
Wherein the adjusting means comprises:
A plurality of horizontal first slots formed on the upper frame,
A vertical second slot formed on each of the vertical members,
A bolt passing through the first elongated hole and the second elongated hole;
And a nut fastened to the bolt.
A lower vertical reinforcing bar vertically disposed in the lower structural member, the lower vertical reinforcing bar protruding from the upper end of the lower structural member and having a lower joint threaded along the outer peripheral surface; A fin portion formed around the lower end of the PC column; An upper vertical reinforcing bar disposed vertically in the PC column and projecting from a lower end of the PC column and having an upper joint located at the fold and formed with threads along the outer circumference; A connecting portion connecting the lower vertical reinforcing bar and the upper vertical reinforcing bar by screwing the lower end portion to the lower joint portion and screwing the upper end portion to the upper joint portion; And a mortar part which is filled between the lower structural member and the PC column, and the filler part. The method of claim 1,
A substructure member installing step of installing a substructure member;
Placing a PC column on the lower structural member;
A coupling step of screwing the lower joint part to a lower end of the coupling part and screwing the upper joint part to an upper end of the coupling part; And
And forming a mortar part between the lower structural member and the PC column and filling the mortar part with the mortar part.
12. The method of claim 11,
Wherein the connection part is coupled to the lower joint part or the upper joint part before the step of arranging the PC column.
12. The method of claim 11,
The connection unit includes a connection nut having a pipe shape and having a lower end coupled to the lower joint and an upper end coupled to the upper joint, a lower nut fastened to the lower joint and closely attached to a lower end of the connection nut, And an upper nut fastened to the upper end of the connecting nut,
Wherein the lower nut is coupled to the lower coupling part, the upper nut is coupled to the upper coupling part, and the coupling nut is coupled to the lower coupling part or the upper coupling part,
Wherein the connecting step comprises:
A first connecting step of moving the connecting nut up and down so that the lower end of the connecting nut is fastened to the lower end of the connecting nut and fastening the upper end of the connecting nut to the upper end of the connecting nut;
And a second connecting step of bringing the lower nut into close contact with the lower end of the connecting nut and bringing the upper nut into close contact with the upper end of the connecting nut.
12. The method of claim 11,
The lower structural member includes a second lower vertical reinforcing bar vertically disposed in the lower structural member and having a second lower joint projecting from the upper end of the lower structural member and the PC column includes a second upper vertical reinforcing bar disposed in the PC column, ≪ / RTI &
The second lower vertical reinforcing bar and the second upper vertical reinforcing bar are connected by a sleeve into which the second lower joint is inserted at the lower end and the lower end of the second upper vertical steel is inserted into the upper end at the upper end A method of constructing a PC column joint structure.
12. The method of claim 11,
Between the step of installing the substructure member and the step of arranging the PC column,
And a bed block installation step of installing a horizontal plate-shaped bed block passing through the lower joint part on the upper part of the lower structural member.
12. The method of claim 11,
The lower structural member includes a rectangular frame-shaped upper frame to which the lower end of the lower vertical reinforcing bar is coupled, a lower frame shaped like a square frame spaced apart from the lower portion of the upper frame, Further comprising a base frame portion having a plurality of vertical members and adjusting means for adjusting the position and angle of the upper frame relative to the vertical members,
In the step of installing the substructure member,
A base frame part seating step of placing the base frame part coupled with the lower end of the lower vertical reinforcing bar on the ground;
Placing an abandoned concrete around the lower frame and the vertical member so that an upper end of the vertical member protrudes to an upper portion of the abandoned concrete;
Adjusting the position and angle of the upper frame with respect to the vertical member by the adjusting means; And
And a base concrete pouring step for pouring the foundation concrete onto the upper part of the abandoned concrete, so that the upper end of the lower vertical reinforcement protrudes to the upper part of the foundation concrete.

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