KR20180079748A - Combination structure of permanent concrete form and prefabricated reinforced concrete column assembly - Google Patents

Abstract

The present invention provides a coupling structure of a lightweight permanent mold for a pre-assembled column assembly, wherein the concrete mold is coupled in front of a column assembly and horizontally slid and fixed together so as to be easily coupled to the column assembly, thereby improving constructability and shortening the construction duration. The coupling structure serves to couple a lightweight permanent concrete mold to a pre-assembled column assembly to form a reinforce concrete column, wherein the pre-assembled column assembly includes a plurality of angled steel members disposed on respective corners thereof at positions spaced apart at a predetermined interval from column surfaces of the column, and support bars coupled to the outside of the angled steel members to horizontally couple the angled steel members. The lightweight permanent concrete mold includes flat plates for forming outer surfaces of the concrete column, and a protruding portion disposed on the inside of the flat plates and protruding as an enlarged portion from one side or both sides of an end portion of a connecting portion protruding in a direction perpendicular to the flat plates in the longitudinal direction of the column. A locking hole is formed on the outer side of the support bar so as to be vertically extended through the support bar, and the enlarged portion of the permanent mold is fixedly fitted into the locking hole of the support bar.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a continuous structure of a lightweight permanent mold for a pre-

The present invention relates to a combined structure of a lightweight permanent formwork for a pre-assembled column assembly capable of improving workability and shortening of air by easily coupling a permanent formwork to a pre-assembly column assembly by joining the light-weight formworks to the front of the column assembly, It is about.

Formwork is a structure temporarily installed to make concrete with a certain shape and size in a short period of time until concrete is cured to a certain degree. In concrete structure such as reinforced concrete or steel-reinforced concrete, formwork is essential.

Such a formwork is basically a construction work for completion of a desired building or structure, and comprises a form board in contact with concrete and a strut, a wale, and a long support to support the formwork (Patent No. 10-0540641). As a result, not only does the formwork require too much material, but it also takes a lot of time and money to assemble and disassemble the formwork and the tramp.

Especially, the larger the structure, the greater the possibility of safety accidents due to the absence of workers during the installation or disassembly of such temporary materials.

As described above, the increase of the material and the construction amount required for the formwork construction is the main cause of the construction cost and the air increase, and the installation and disassembly of the formwork is a troublesome process which occupies a large part of the construction cost and the process of the entire concrete construction.

Therefore, it is required to develop a permanent formwork for improving the workability and economical efficiency while solving these problems.

The prior art shown in FIG. 1 has been developed to solve such a problem, and relates to a prefabricated monolithic prefabricated column having a prefabricated column framing with a prefabricated deck formwork (Patent No. 10-1490748).

In the registration technique, the formwork 140 is fastened to the horizontal support member 120 by a direct-coupling screw or the like, and is coupled to the prefabricated framework.

However, since the precise position of the horizontal support member 120 must be grasped for the coupling of the formwork 140, and the direct-connection screws must be fastened one by one, the work takes much time to attach the formwork. There is a possibility that the concrete paste leaks through the direct screw part.

2 shows a deck form fastening structure capable of sliding a form from a lower part to an upper part to be coupled to a pre-assembly frame (Japanese Patent No. 10-1618798).

The above-described technique can easily connect the preform to the prefabricated frame by sliding the form without moving the fixed bar. However, since the form is slidingly moved from the lower part to the upper part, it requires a space for the formwork construction at the lowermost part and there is a limit to finish the lower part with a separate formwork.

In addition, since the position of the first fixing bar 4a, which is a horizontal support member, and the position of the second fixing bar 4b, which is coupled to the formwork, must be precisely matched, precision of fabrication is required.

In order to solve the above problems, the present invention provides a joint structure of a lightweight permanent mold for a pre-assembled column assembly that can solve the problem of construction cost and air increase due to conventional mold construction.

The present invention provides a joining structure of a lightweight permanent formwork for a pre-assembly column assembly that can easily connect the formwork to the pre-assembly column assembly in a short time without regard to the position of the horizontal support member.

The present invention is to provide a joining structure of a lightweight permanent formwork for a pre-assembled column assembly in which there is no need to slide the form up and down so that the space for the lowermost formwork construction or the conventional formwork process is unnecessary.

The present invention seeks to provide a coupling structure of a lightweight permanent formwork for a pre-assembled column assembly without fear of leakage of the concrete paste.

According to a preferred embodiment of the present invention, there is provided a steel composite concrete column, comprising: a plurality of shaped steel members disposed at positions spaced apart from each other at a predetermined interval from a column surface at each corner of a column; The present invention relates to a coupling structure of a lightweight permanent formwork for joining a lightweight permanent formwork to a pre-assembled column assembly comprising a support bar which is coupled to the outside of a steel frame to form an outer side surface of the concrete column, And a protrusion formed on one side or both sides of an end portion of a connection portion protruding in a direction perpendicular to the flat plate portion in the longitudinal direction of the column, inside the flat plate portion, and a fastening hole is formed through the upper side of the support bar, The enlarged portion of the lightweight permanent formwork is inserted into the catching hole, And is fixed to the chiba. The present invention provides a coupling structure of a lightweight permanent mold for a pre-assembled column assembly.

According to another preferred embodiment of the present invention, the supporting bar is provided with an insertion groove for inserting the enlarged portion of the lightweight permanent formwork at the front side thereof, and the engaging hole is formed at one side of the inner end of the insertion groove so as to communicate with the insertion groove The present invention provides a joining structure of a lightweight permanent mold for a pre-assembly column assembly.

According to another preferred embodiment of the present invention, the supporting bar has a cross section of a shape, one leg is fixedly coupled to the shaped steel member, and the insertion groove and the locking hole are formed outside the other leg. Thereby providing a combined structure of the formwork.

According to another preferred embodiment of the present invention, there is provided a coupling structure for a lightweight permanent mold for a pre-assembled column assembly, wherein one side or both side surfaces of the insertion groove are provided with a first reinforcing portion vertically bent upward or downward .

According to another preferred embodiment of the present invention, there is provided a joining structure of a lightweight permanent formwork for a pre-assembled column assembly, characterized in that a second reinforcing portion formed at an upper portion or a lower portion is formed at the front or rear of the catching hole.

According to another preferred embodiment of the present invention, there is provided a coupling structure for a lightweight permanent formwork for a pre-assembled column assembly, wherein a flange part vertically bent upward or downward is provided at the other leg end of the support bar.

According to another preferred embodiment of the present invention, the support bar is provided with an insertion groove formed at one end thereof, a support portion fixed to the one end of the support bar at one end thereof and fixed to the other end of the support bar, And a fixing clip formed of a U-shaped bent portion and a latching portion formed between the inner side of the insertion groove and the latching hole, are coupled to each other.

According to another preferred embodiment of the present invention, the vertical joints of the lightweight permanent molds adjacent to each other in the vertical direction are coupled to any one of the support bars, and the support bars to which the vertical joints are coupled are provided with a pair of the other legs, And the upper part of the lower lightweight permanent formwork and the lower part of the upper lightweight permanent formwork are coupled to the other of the lower legs and the upper legs of the lower lightweight permanent formwork, respectively. Thereby providing a bonding structure.

The present invention has the following effects.

First, unlike the conventional conventional formwork, since the lightweight permanent formwork is combined, the time required for formwork construction and dismantling as a building material and the construction cost thereof can be greatly reduced.

Second, the enlarged portion of the protrusion, which is a vertical member formed inside the lightweight permanent formwork, is fixed to the latching hole of the support bar, which is a horizontal direction member constituting the pre-assembly column assembly, so that the form can be easily coupled to the pre-assembly column assembly. Accordingly, it is possible to join the formwork in a short time without depending on the position of the support bar, thereby improving the workability and shortening the air.

Third, when the insertion groove is formed on the outer side of the support bar, the light weight permanent formwork can be coupled to the support bar at the front side of the pre-assembly column assembly, and the lightweight permanent form can be slid to the left and right and the position can be adjusted. Therefore, there is no need to move the form to the upper part, so there is no need for the space for the lowermost formwork or the existing formwork process.

Fourth, there is no fear of leakage of the concrete paste through the formwork front since no bonding holes are formed in the lightweight permanent formwork.

Fifth, since lightweight permanent formwork is used, it is possible to reduce the weight of self-weight of formwork, transportation and burden.

Sixth, due to the rigidity of the projecting part, it is possible to withstand the side pressure of the concrete when the concrete is poured, and it can effectively support the load of the upper slab.

1 is a perspective view of a conventional prefabricated deck deck form integrated prefabricated column.
FIG. 2 is a perspective view showing a form to be moved to a conventional upper part and coupled to a prefabricated frame. FIG.
3 is a perspective view showing a coupling relationship between a pre-assembled column assembly and a lightweight permanent mold.
Figure 4 is a perspective view of a lightweight permanent form.
5 is a perspective view of a support bar;
6 is a cross-sectional view showing a method of joining the support bar and the lightweight permanent mold shown in Fig. 5;
7 is a cross-sectional view showing the coupling relationship of the neighboring lightweight permanent formwork.
8 is a cross-sectional view illustrating a method of coupling a neighboring lightweight permanent mold to a support bar;
9 is a bottom perspective view of a support bar provided with first and second reinforcing portions;
10 is a perspective view of a support bar with a flange portion;
Fig. 11 is a cross-sectional view showing the relationship between the support bar and the lightweight permanent mold shown in Fig. 10; Fig.
12 is a perspective view showing a coupling relationship between the support bar and the fixing clip;
13 is a cross-sectional view showing a method of joining a lightweight permanent mold at a corner portion;
14 is a perspective view showing a support bar in a lightweight permanent form vertical joint;

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

FIG. 3 is a perspective view showing the coupling relationship between the pre-assembly column assembly and the lightweight permanent mold, and FIG. 4 is a perspective view of the lightweight permanent mold.

As shown in FIGS. 3 and 4, the joining structure of the lightweight permanent formwork for the pre-assembled column assembly of the present invention is arranged at a position spaced apart from the column face at regular intervals in each corner of the column to form a composite concrete column And a support bar (2) coupled to the outside of the shaped steel (1) so as to mutually connect the plurality of shaped steels (1) in a horizontal direction. The lightweight permanent mold (3) comprises a flat plate portion (31) for forming an outer side surface of a concrete column and a pillar portion (31) formed on the inner side of the flat plate portion (31) (32) protruding from one side or both sides of an end portion of a connecting portion (321) projecting in a direction perpendicular to the flat plate portion (31) in the longitudinal direction of the supporting bar (2) The hooking hole 24 is provided in the upper and lower pipes And the enlarged portion 322 of the lightweight permanent mold 3 is inserted into the retaining hole 24 so that the lightweight permanent mold 3 is fixed to the support bar 2. [

The pre-assembled column assembly can be manufactured in advance in a factory for the purpose of forming a composite concrete column. The pre-assembled column assembly is composed of a support bar (2) for joining a shaped steel member (1) .

The supporting bar 2 is a part to which the lightweight permanent formwork 3 is directly coupled and is coupled to the outside of the shaped steel 1 by means of rivet, bolt, welding or the like.

The supporting bars (2) are arranged so as to be spaced apart from each other along the longitudinal direction of the column.

The support bar (2) is formed with an engagement hole (24) at an end thereof facing the outside of the column.

The catching hole 24 is a portion where the enlarged portion 322 of the lightweight permanent mold 3 to be described later is inserted and is formed so as to penetrate the support bar 2 up and down.

A plurality of the locking holes 24 are formed to be spaced apart from one another along the longitudinal direction of the supporting bar 2, that is, the width direction of the column.

The supporting bar 2 may be formed of a steel material such as a Z-shaped steel or a D-shaped steel or a lightweight steel.

The lightweight permanent mold 3 is composed of a flat plate 31 forming an outer surface of the concrete column and a protrusion 32 protruding in the longitudinal direction of the column inside the flat plate 31.

The flat outer surface of the flat plate 31 faces outward.

A plurality of the protrusions 32 may be spaced apart from each other along the width direction of the column.

As the I value increases due to the protrusion 32, the rigidity increases, so that the lightweight permanent mold 3 is able to withstand the side pressure of the concrete.

Since the protrusions 32 are embedded in the concrete after being poured into concrete, the lightweight permanent molds 3 are fixed in the concrete to improve the structural performance.

The protrusion 32 includes a connection portion 321 and an enlarged portion 322.

The connection portion 321 is formed to protrude from the inside of the flat plate portion 31 so as to be perpendicular to the flat plate portion 31.

The enlarged portion 322 protrudes from one end or both ends of the connecting portion 321.

The enlarged portion 322 is inserted into the retaining hole 24 of the support bar 2 and is engaged to fix the lightweight permanent mold 3 to the support bar 2. In order to firmly fix the lightweight permanent mold 3 to the supporting bar 2, the engaging hole 24 is preferably formed to correspond to the shape of the enlarged portion 322.

The enlarged portion 322 may be integrally formed by bending an end portion of the connection portion 321. [

4, a flat plate 31, a connecting portion 321 and an enlarged portion 322 may be formed by bending a single flat plate.

The protrusions 32 may be formed on both left and right ends of the lightweight permanent mold 3. In this case, the protrusions 32 may be formed in a letter shape or a T shape.

7, the adjacent lightweight permanent molds 3 and 3 'are connected to the connecting portions 321 and 321' of the protrusions 32 and 32 'formed at both ends and the enlarged portions 322 and 321' 322 'may be in close contact with each other.

The support bar 2 and the lightweight permanent mold 3 may be contacted at one or more points in order to prevent slip in the longitudinal direction of the lightweight permanent mold 3, that is, in the column height direction.

The lightweight permanent formwork (3) is lightweight and can reduce the weight of the formwork, and is easy to handle and easy to install as compared to existing formwork. This can reduce the labor costs in the construction site and reduce the construction cost.

The lightweight permanent mold 3 can be preattached to the support bar 2 coupled to the shaped steel 1 and, in some cases, in situ.

Fig. 5 is a perspective view of a support bar, and Fig. 6 is a cross-sectional view showing a joining method of the support bar and the lightweight permanent mold shown in Fig.

5 and 6, an insertion groove 25 is formed in the outer side of the support bar 2 to insert the enlarged portion 322 of the light weight permanent formwork 3 from the front, 24 may be formed at one side of the inner end of the insertion groove 25 so as to communicate with the insertion groove 25.

The plurality of insertion grooves 25 are formed so as to be spaced apart from each other along the longitudinal direction of the support bar 2. [

6 (a), the enlarged portion 322 of the lightweight permanent mold 3 can be inserted into the insertion groove 25 from the front surface of the support bar 2. [

After the enlarged portion 322 is inserted into the engaging hole 24 through the insertion groove 25 of the support bar 2, the lightweight permanent mold 3 is slid to the left or right as shown in FIG. 6 (b) So that the enlarged portion 322 is located inside the engaging hole 24. [

When the light weight permanent formwork 3 is coupled to the support bar 2 by the left and right sliding movement, upper and lower clearances for inserting the lightweight permanent mold 3 at the upper or lower portion are not required.

In addition, the lightweight permanent mold 3 can be joined regardless of the vertical position of the support bar 2.

The width of the insertion groove 25 and the distance between the adjacent insertion grooves 25 are adjusted in consideration of the width of the projection 32 of the lightweight permanent mold 3 and the distance between the neighboring projections 32. [

The supporting bar 2 may have various cross-sectional shapes and may have a cross-sectional shape as shown in FIG. 5 and the like.

At this time, one of the legs 21 of the support bars 2 is fixedly coupled to the steel material 1, and the other leg 22 is formed with the insertion groove 25 and the engagement hole 24 .

It is not necessary to form a separate air hole 223 in the other leg 22 for discharging the air under the supporting bar 2 when the concrete is poured.

6 (b), the flat plate portion 31 of the lightweight permanent mold 3 can be brought into close contact with the end portion of the other leg 22 and can be more firmly fixed.

The supporting bar 2 may be an ordinary hot rolled steel angle member.

Fig. 7 is a cross-sectional view showing the coupling relationship of the adjacent lightweight permanent dies, and Fig. 8 is a sectional view showing a method of coupling the neighboring lightweight permanent dies to the support bars.

If the width of the column is greater than the width of the lightweight permanent formwork (3), several lightweight permanent formworks (3) are joined to the column face.

As shown in FIG. 7, the adjacent lightweight permanent molds 3 and 3 'are formed such that one lightweight permanent mold 3 has a one end protruding portion 32 in a shape and the other lightweight permanent mold 3' Can be formed in a T shape such that the adjacent side end projection 32 'is in close contact with the a-shaped projection 32. [

As a result, the side ends of the adjacent lightweight permanent molds 3 and 3 'can be brought into close contact with each other and can be firmly fixed.

The neighboring lightweight permanent molds 3, 3 'shown in Fig. 7 can be constructed in the following order.

8 (a), one side end of a one-side lightweight permanent mold 3 having a one-side protrusion 32 in a shape is inserted into an insertion groove 25 of a supporting bar 2, and then a lightweight permanent mold (3) is slid to the left or right to mount the enlarged portion (322) of the protruding portion (32) on the latching hole (24).

The lightweight permanent mold 3 'on the other side of the other side has a T-shaped protrusion 32' located at the end. The protruding portion 32 'is formed by folding the connection portion 321' and the enlarged portion 322 'is formed by folding one end of the enlarged portion 322' into two folds. The extended end of the enlarged portion 322 ' Is formed so as to overlap with the enlarged portion (322) of the permanent formwork (3).

The other lightweight permanent mold 3 'is inserted into the insertion groove 25 of the supporting bar 2 and then slid to the left or right to form a pair of adjacent lightweight permanent molds 3 and 3 'Are provided in close contact with each other.

Accordingly, the overall shape of the protrusions 32 and 32 'at the portion where the adjacent light weight permanent molds 3 and 3' are coupled can be the same as that of the protrusions 32 at other portions.

9 is a bottom perspective view of a support bar provided with first and second reinforcing portions.

As shown in FIG. 9, one side or both side surfaces of the insertion groove 25 may be provided with a first reinforcing part 221 formed by vertically bending the upper or lower side.

The first reinforcing portion 221 reinforces the portion of the other leg 22 cut to form the insertion groove 25 and supports the enlarged portion 322 of the lightweight permanent mold 3.

When the other leg 22 is cut to form the insertion groove 25, the first reinforcing portion 221 may be formed by bending the incised portion upward or downward by 90 °.

In this case, the insertion groove 25 and the first reinforcing portion 221 can be formed at the same time.

In the embodiment of FIG. 9, both side portions are bent downward with respect to the center of a portion where the other leg 22 is cut to form the insertion groove 25, and the first reinforcing portion 221 is formed on both side surfaces of the insertion groove 25, .

The first reinforcing portion 221 is formed only on one side of the insertion groove 25 when only one side of the cut portion of the other leg 22 is bent to form the insertion groove 25.

When the first reinforcement 221 is formed only on one side of the insertion groove 25, the first reinforcement 221 is first reinforced so that the enlarged portion 322 of the lightweight permanent mold 3 can be directly supported, It is preferable that the portion 221 is formed on the side surface of the engaging hole 24.

In addition, a second reinforcing portion 222 may be provided on the front or rear of the latching hole 24 so as to be vertically bent upward or downward.

The second reinforcing portion 222 reinforces the portion of the other leg 22 cut to form the latching hole 24 and supports the enlarged portion 322 of the lightweight permanent mold 3.

When the other leg 22 is cut to form the latching hole 24, the cut portion may be bent upward or downward by 90 ° to form the second reinforcement portion 222.

In this case, the locking hole 24 and the second reinforcing portion 222 can be formed at the same time.

Unlike the insertion groove 25, the latching hole 24 is narrow in width so that it can not be bent on both sides. Therefore, it is preferable that the incised portion is formed by vertically bending only one side.

Fig. 10 is a perspective view of a support bar provided with a flange portion, and Fig. 11 is a cross-sectional view showing a coupling relationship between the support bar and the lightweight permanent mold shown in Fig.

10, the end of the other leg 22 of the support bar 2 may be provided with a flange portion 23 that is vertically bent upward or downward.

The flange portion 23 is formed by bending the end portion of the other leg 22 upward or downward by 90 degrees, thereby increasing the cross-sectional performance of the support bar 2. [

In this case, the support bar 2 may be formed of a cold-rolled member, or a general-shaped steel may be used.

The flange portion 23 can support the enlarged portion 322 of the lightweight permanent mold 3 so as not to be released so that the engaging hole 24 is formed at the end portion of the other leg 22, (25) can be formed only by the thickness of the flange portion (23).

In this case, since the area of the insertion groove 25 is not sufficient, it is preferable that the air hole 223 for discharging the air under the support bar 2 is separately formed in the other leg 22 when the concrete is laid.

Fig. 12 is a perspective view showing the engagement relationship between the support bar and the fixing clip, and Fig. 13 is a sectional view showing the joining method of the lightweight permanent formwork at the corner portion.

12 and 13, an insertion groove 25 'is formed at one end of the support bar 2, and at one end of the support bar 2, 22 ', and a hooking hole 24' formed between the end of the supporting portion 41 and the inner side of the insertion groove 25 'so as to be bent into a U-shape toward the insertion groove 25' A fixing clip 4 constituted by an engaging portion 42 which forms the engaging portion 42 is formed.

That is, the fixing clip 4 may be coupled to one end of the supporting bar 2, particularly, one end of the supporting bar 2 positioned at the corner of the column.

The fixing clip 4 is composed of a supporting portion 41 and a locking portion 42.

One side of the support portion 41 is coupled to a side surface of the other leg 22 at one side end of the support bar 2.

The support portion 41 may be vertically extended to be coupled to a side of the other leg 22 as well as a side of the other leg 21 to a predetermined length.

The latching portion 42 is formed to extend from the end of the support portion 41 and is bent in a U-shape to protrude toward the insertion groove 25 '.

Thus, a latching hole 24 'is formed between the latching portion 42 and the inside of the insertion groove 25'.

When the protruding portion 32 " is formed on the side of the lightweight permanent formwork 3 ", the protruding portion 32 "is formed at one end of the support bar 2 vertically coupled thereto, 24 '. In this case, however, the end of the support bar 2 is opened and it is difficult to form the latching hole 24'.

Therefore, the fixing clip 4 is joined to one end of the supporting bar 2 to separately form the latching hole 24 'for insertion of the protrusion 32 ".

The fixing clip 4 is welded to the side surface of the other leg 22 of the supporting bar 2.

13A, the connecting portion 321 " and the enlarged portion 322 " of the other lightweight permanent formwork 3 ", which is installed orthogonally to the one lightweight permanent formwork 3, As shown in Fig.

After the other lightweight permanent mold 3 "is installed, the one lightweight permanent mold 3 arranged in the direction orthogonal thereto as shown in FIG. 13 (b) is coupled to the support bar 2.

At this time, the protrusion 32 disposed at the end of the one lightweight permanent mold 3 is in close contact with the protrusion 32 "of the other lightweight permanent mold 3".

For this purpose, as described above with reference to FIGS. 7 and 8, the protrusions 32 "of the adjacent lightweight permanent mold 3" and the protrusions 32 of the one lightweight permanent mold 3, T-shaped.

The end portion of the flat plate portion 31 of the one lightweight permanent mold 3 and the end portion of the connecting portion 321 "of the other lightweight permanent mold 3 ", which are joined at the corner of the column, The caulking material 26 such as silicon can be applied for the purpose of preventing flow of the lightweight permanent molds 3, 3 ".

As a result, it is possible to prevent the lightweight permanent molds 3, 3 " from sliding off in the lateral direction, and to disassemble the lightweight permanent molds 3 and 3 "by removing the caulking material 26 It is possible.

Figure 14 is a perspective view showing a support bar in a lightweight permanent form vertical joint.

14, the vertical joints of the lightweight permanent molds 3a and 3b adjacent to each other in the vertical direction are coupled to any one of the support bars 2, and the support bar 2 to which the vertical joints are coupled, The upper and lower portions of the lower lightweight permanent formwork 3a and the lower portion of the upper lightweight permanent formwork 3b are formed as a pair of upper and lower legs 22 and 22 ' Can be coupled to the other leg 22 'and the other upper leg 22, respectively.

The vertical cantilever lengths of the lightweight permanent molds 3a and 3b become long and may be vulnerable to the concrete installation pressure when the vertical joints of the lightweight permanent molds 3a and 3b adjacent to the upper and lower sides are located between the support bars 2. [

14, the vertical joints of the upper and lower lightweight permanent molds 3a and 3b are positioned on the support bar 2 and the support bar 2 is formed in a C shape so that the ends of the upper and lower permanent molds 3a and 3b are supported by the support bars 2, The upper and lower lightweight permanent molds 3a and 3b can be firmly supported by the vertical joints by being coupled to the other upper and lower legs 22 and 22 '

At this time, since the support bar 2 is formed in a C shape, it is difficult to place the concrete inside the support bar 2, it is preferable to form air holes 223 in the upper and lower legs 22 and 22 '.

When it is difficult to install the separate C-shaped support bar 2 as shown in FIG. 14, the vertical spacing of the support bars 2 is narrowed to about 100 mm near the vertical joints of the upper and lower lightweight permanent molds 3a and 3b, The deformation of the lightweight permanent mold 3 may be minimized by reducing the cantilever length of the permanent molds 3a, 3b.

1: shaped steel 2, 2 ': support bar
21: one side leg 22, 22 ': the other side leg
221: first reinforcing portion 222: second reinforcing portion
223: air hole 23: flange portion
24, 24 ': engaging hole 25, 25': insertion groove
26: caulking material 3, 3 ', 3 ", 3a, 3b: lightweight permanent mold
31, 31 ': flat plate parts 32, 32': protrusions
321, 321 ', 321 ": connection parts 322, 322', 322"
4: fixing clip 41:
42:

Claims (8)

A plurality of shaped steels (1) arranged at positions spaced apart from each other at regular intervals with column surfaces at respective corners of the column to form steel composite concrete columns, and a plurality of shaped steels (1) And a support bar (2) coupled to the outside of the steel material (1). The present invention relates to a structure of a lightweight permanent mold for joining a lightweight permanent mold (3)
The lightweight permanent mold 3 includes a flat plate 31 for forming an outer side surface of a concrete column and a connecting portion 30 which protrudes in a direction perpendicular to the flat plate 31 in the longitudinal direction of the column inside the flat plate 31 321, and a protruding portion 32 having an enlarged portion 322 projected on one side or both sides thereof,
A locking hole 24 is vertically formed on the outer side of the support bar 2 so that an enlarged portion 322 of the lightweight permanent mold 3 is inserted into the locking hole 24 to be engaged with the lightweight permanent mold 3, Is fixed to the supporting bar (2). The joining structure of the lightweight permanent formwork for the pre-assembly column assembly.
The method of claim 1,
An insertion groove 25 is formed at an outer side of the support bar 2 and into which an enlarged portion 322 of the light weight permanent formwork 3 is inserted from the front side and the engagement hole 24 is formed inside the insertion groove 25 And is formed so as to communicate with the insertion groove (25) at one end of the end portion.
3. The method of claim 2,
The support bar 2 is formed in a shape of a cross section so that the one leg 21 is fixedly coupled to the shaped steel member 1 and the insertion groove 25 and the coupling hole 24 are formed outside the other leg 22 A combination structure of a lightweight permanent mold for a pre-assembled column assembly.
4. The method of claim 3,
Wherein one side or both side surfaces of the insertion groove (25) are provided with a first reinforcing portion (221) formed by vertically bending the upper or lower side of the insertion groove (25).
4. The method of claim 3,
And a second reinforcing part (222) formed at the front or rear of the locking hole (24) so as to be vertically bent upward or downward.
4. The method of claim 3,
And a flange part (23) vertically bent upward or downward is provided at an end of the other leg (22) of the support bar (2).
The method of claim 1,
An insertion groove 25 is formed at one end of the support bar 2 and a support part 41 is fixed to one end of the support bar 2 to be fixed to the end of the other leg 22 of the support bar 2, And an engaging portion 42 which is bent in a U-shape from the end of the support portion 41 toward the insertion groove 25 'and forms a coupling hole 24' between the insertion groove 25 'and the inside of the insertion groove 25' Wherein the fastening clip (4) is joined to the fastening clip (4).
4. The method of claim 3,
The vertical joints of the lightweight permanent molds 3a and 3b adjacent to each other in the vertical direction are coupled to any one of the support bars 2 and the support bars 2 to which the vertical joints are coupled are supported by the other legs 22 and 22 ' And the upper part of the lower lightweight permanent mold 3a and the lower part of the upper lightweight permanent mold 3b are formed in the upper and lower portions of the lower side other legs 22 ' (22) of the upper part of the front leg (22).

Images