KR101587583B1 - Mega Column and Construction Method thereof - Google Patents

Abstract

The present invention relates to a mega column formed by disposing four prefabricated column units on four corners of a column such that they are spaced apart from one another to form a space between adjacent prefabricated column units, and to pour concrete to an interior thereof; and a construction method thereof. In the present invention, the mega column is formed by assembling four prefabricated column units and pouring concrete to the interior thereof. The prefabricated column units comprises: a plurality of steel girders; a first lattice material connecting adjacent steel girders forming an outer surface of the mega column; a second lattice material connecting adjacent steel girders forming a side positioned within the mega column; and a first form coupled to an outer surface of the first lattice material. The prefabricated column units are disposed on four corners of the mega column and spaced apart from one another, forming a space between adjacent prefabricated column units. Adjacent steel girders on an outer side of the adjacent prefabricated column units are connected by a third lattice material; adjacent steel girders on an inner side of adjacent prefabricated column units are connected by a fourth lattice material; and a second form is coupled to an outer side of the third lattice material. As the prefabricated column units are used, a steel bar arrangement operation can be minimized, and a form installation and dismantling can be omitted; thus reducing duration.

Description

Mega Column and Construction Method < RTI ID = 0.0 >

The present invention relates to a mega column having a large cross section and a high height and a method of constructing the same, and more particularly, to a method of manufacturing a mega column having four cross- The present invention relates to a mega column and a method of constructing the mega column.

In the case of a very large column with a member cross-sectional size of about 3 m or more, it is difficult to work in an inside of the column because the amount of reinforcing bar is excessive when it is manufactured by RC.

Particularly, since reinforcing bars are arranged very closely along the section of the column and the auxiliary reinforcing bars such as the reinforcing bars are required to be very long, it is difficult to arrange the reinforcing bars. Moreover, after the operator completes the laying work in the columns, It is difficult to get out.

In addition, since the mega column is over 20m high, it is necessary to install a scaffold in the formwork and demolding work, and there is a great risk of a safety accident because the reinforcement or formwork work is done at a high altitude.

Furthermore, since the area of the form is wider, it takes a lot of time to install the formwork, which causes air to increase. In addition, it is necessary to support the form by supporting the mold on the outside in response to the side pressure of the concrete. Since the size of the member itself is large, it is very difficult to install the mold.

Due to the difficulty of various field work as mentioned above, it can be considered to construct a mega column with a PC member. However, when a mega column is made of a PC member, the weight and size of the member are too large to carry or weigh.

In addition, even in the case of designing with a general SRC system, it is difficult for the megacolumn to move the auxiliary reinforcement such as the steel bar reinforcement, and it is difficult for the worker to move between the reinforced steel bars. It can be said that the problem is inherent.

Conventional patent application No. 10-2012-0012916 has filed a patent application for a steel pipe with an increased rigidity capable of forming a large column with a CFT column.

However, this technique is difficult to apply to a very large column because of the limit of the size of a steel pipe that can be manufactured, and it is difficult to install a main beam in a CFT column and it is difficult to process a column-base joint, a column junction or a column-beam junction.

In order to solve the above-described problems, the present invention provides a mega column and a method of constructing the mega column that can shorten the air by omitting the work of installing and disassembling the formwork, as well as minimizing the field reinforcement work using the factory pre- assembling column unit I want to.

The present invention provides a mega column and a method of constructing the mega column that can be inserted into a column and perform various necessary operations such as reinforcement.

SUMMARY OF THE INVENTION The present invention provides a mega column and a method of constructing the same that can reduce the burden of safety accidents due to high-altitude work, without need for external support.

The present invention provides a megacolumn and a method of constructing the same that can minimize the transportation and burden.

The present invention seeks to provide a mega column capable of producing pillars of various sizes while using a standardized column unit and a method of constructing the same.

According to a preferred embodiment of the present invention, there is provided a mega-column comprising four pre-assembled column units assembled and poured concrete therein, wherein the pre-assembled column unit comprises a plurality of mold steels, A first lattice material interconnecting neighboring mold steels, a second lattice material interconnecting neighboring mold steels constituting a face located in the interior of the megacolumn, and a first die joined to the outer side of the first lattice material And each of the pre-assembled column units is spaced apart from each other at four corners of the mega column, and a space is formed between neighboring pre-assembled column units, and a neighboring pre- The inner adjacent mold steels of the adjacent prefabricated column units are interconnected to a fourth lattice material, Outer tooth member is to provide the mega column characterized in that the second mold are combined.

According to another preferred embodiment of the present invention, the pre-assembled column unit is provided with a first form tie between a mold steel located at one side of the first lattice material and an inner edge of the first lattice material.

According to another preferred embodiment of the present invention, a second foam tie that connects one side of a neighboring first lattice material is coupled to an outer edge of the pre-assembly column unit.

According to another preferred embodiment of the present invention, a plurality of vertical reinforcing bars are disposed on the surface of the pre-assembly column unit constituting the outer surface of the mega column.

According to another preferred embodiment of the present invention, a U-shaped reinforcing bar having an end directed toward the inside of the pre-assembly column unit is coupled to the vertical reinforcing bar.

According to another preferred embodiment of the present invention, the first lattice material and the third lattice material are Z bars.

According to another preferred embodiment of the present invention, the first and third dies are arranged in a longitudinal direction perpendicular to the longitudinal direction of the deck deck form, which is formed by alternating bones and floors.

According to another aspect of the present invention, there is provided a method of constructing a mega column, comprising: (a) installing four pre-assembled column units at four corners of the mega column so as to form a space therebetween; (b) connecting adjacent prefabricated column units at three sides of the megacolumn to a third lattice material and attaching a second die; (c) interconnecting the inner edge of the neighboring pre-assembly column unit to a fourth lattice material; (d) connecting a neighboring pre-assembly column unit to the third lattice material on the other side of the mega column and attaching a second die; And (e) pouring concrete into the pre-assembly column unit and the space portion. The method of manufacturing a megahertz column according to the present invention includes the steps of:

According to another preferred embodiment of the present invention, in the step (b) and the step (d), the second die and the third lattice material are preliminarily combined before being attached to the steel plate of the pre-assembly column unit. ≪ / RTI >

The present invention has the following effects.

First, since the prefabricated column unit that combines the formwork with the steel frame placed at the outside of the column is used, it is possible to minimize the field reinforcement work and there is no need for additional external support. In addition, it is possible to omit the work of installing the formwork and utilize the formwork attached to the prefabricated column unit as a permanent formwork.

Secondly, prefabricated column unit is manufactured at the factory and can be shipped in the field by minimizing the field work and reducing the risk of safety accidents due to the complicated work.

Third, it is divided into four prefabricated column units, and the factory is manufactured. Concrete is laid in the field, which minimizes transportation and burden.

Fourthly, since a space is formed between neighboring pre-assembly column units, an entry and exit passage is secured that allows the operator to enter the column and perform various necessary operations.

Fifth, various sizes of pillars can be manufactured by using the standardized column unit by adjusting the size of the space portion.

1 is a perspective view of a mega column according to the present invention.
2 is a cross-sectional view of the pre-assembly column unit;
3 is a perspective view of a part of the pre-assembly column unit;
4 is a perspective view of a pre-assembly column unit;
5 is a cross-sectional view of a mega column of the present invention.
6 is a cross-sectional view showing a size change of a mega column according to a width adjustment of a space portion;
7 is a perspective view showing a step-by-step process for a method of constructing a mega column according to the present invention.

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

FIG. 1 is a perspective view of a mega column according to the present invention, FIG. 2 is a transverse sectional view of a pre-assembled column unit, and FIG. 3 is a perspective view of a pre- assembled column unit.

FIG. 5 is a cross-sectional view of the mega column according to the present invention, and FIG. 6 is a cross-sectional view showing a change in size of the mega column according to the width adjustment of the space portion.

As shown in FIGS. 1, 2, 5, and the like, the mega column of the present invention is constituted by assembling four pre-assembled column units 1 and pouring concrete into the pre-assembled column units 1 ) Comprises a plurality of mold steels (11), a first lattice material (12) interconnecting adjacent mold steels (11) constituting the outer side of the megacolumn, a first lattice material A second lattice material 13 interconnecting the cast steel 11 and a first die 14 coupled to an outer surface of the first lattice material 12, Spaced apart from each other at four corners of the mega column to define a space 2 between neighboring pre-assembled column units 1, and a neighboring preformed column steel member 11 on the outer side of the pre- Are interconnected by a third lattice material (21), and the inner side of the neighboring pre-assembly column unit (1) Steel mold 11, which is characterized in that the fourth and interconnected by lattice material (22), in which the second mold 23 is coupled outside of the third lattice material 21 is provided.

The mega column of the present invention is intended for use as a pillar member by combining a steel material and concrete, and is particularly applicable to a very large column having a member cross-sectional size of about 3 m or more or a high height.

2 and 3, the pre-assembled column unit 1 is formed of a cast steel 11, a first lattice material 12, a second lattice material 13 and a first die 14 .

The pre-assembled column unit (1) is prefabricated as a factory and brought into the field, so that the air can be shortened. In addition, since a plurality of mold steels 11 are used, it is possible to reduce the amount of reinforcing bars and to minimize the number of laying operations, and it is possible to reduce the burden on the operator due to the elevating work.

The cast steel 11 is disposed at each corner of the pre-assembling column unit 1, and can be arranged such that the corners of the section steel are directed toward the outside or inside of the member using a steel sheet as in FIG.

At this time, in order to reinforce the vertical load, a plurality of vertical reinforcing bars 17 may be additionally disposed on the surface of the pre-assembly column unit 1 constituting the outer surface of the mega column.

On the other hand, when the columns are subjected to compressive force in concrete columns, auxiliary reinforcing bars such as band bars are required in response to the expansion of the concrete in the lateral direction. However, the megahert column has a large columnar section, making it impossible to install a belt bar across the member section. Therefore, a U-shaped reinforcing bar 18 having an end directed toward the inside of the pre-assembly column unit 1 can be coupled to the vertical reinforcing bars 17. [

When the U-shaped reinforcing bar 18 is provided outside the column as the auxiliary reinforcing bar and the leg portion length of the U-shaped reinforcing bar 18 is set to be equal to or longer than the fixing length, the leg portion of the U-shaped reinforcing bar 18 is fixed in the concrete, And can act as a reinforcing bar.

The first lattice material 12 connects neighboring mold steels 11 constituting the outer surface of the mega column and the second lattice material 13 connects neighboring molds 11 constituting the surface located in the mega- The steel members 11 are interconnected.

The first and second lattice materials 12 and 13 can be coupled to the cast steel 11 by fastening members such as bolts so that both ends of the first and second lattice materials 12 and 13 are located inside or outside the cast steel 11, respectively.

The fastening member may also serve as a shear connector used to transmit the shear force of the concrete to the steel and prevent the segregation of the concrete and the steel.

Since the first and second lattice materials 12 and 13 increase the rigidity of the pre-assembly column unit 1, it helps to minimize the deformation of the pre-assembly column unit 1 during transportation and installation.

3 and the like, the first and second lattice materials 12 and 13 are connected to each other in the form of a horizontal member having the same height at both ends. However, the first and second lattice materials 12 and 13 may have different heights, Or may be joined to the cast steel 11 in the form of a sheet. A steel material having various cross-sectional shapes such as a flat bar, a-shaped steel, and a d-shaped steel can be used as the first and second lattice materials 12 and 13.

The first die 14 is joined to the outer surface of the first lattice material 12 attached to the surface of the pre-assembly column unit 1 constituting the outer surface of the mega column.

Since the first formwork 14 is previously attached to the factory, it is possible to omit the work formwork and utilize it as a permanent formwork.

2, the first die 14 is connected to a pre-assembly column unit (not shown) so that a space for attaching the second die 23 to the outside of the neighboring pre-assembly column unit 1 can be secured sufficiently. 1 to a position spaced from the cast steel 11 by a predetermined distance.

2 and 3, the pre-assembly column unit 1 may have a first foam tie 15 coupled between one side of the first lattice material 12 and the mold steel material 11 located at the inner edge of the first lattice material 12 .

A second foam tie 16 may be coupled to the outer edge of the pre-assembled column unit 1 to connect one side of the adjacent first lattice material 12 to each other.

The first foam tie 15 and the second foam tie 16 each support the first die 14 with respect to the lateral pressure during concrete pouring.

The first foam tie 15 may have one end coupled to the first lattice material 12 and the other end bolted to a triangular gusset plate coupled to the inside of the mold steel 11 as a section steel.

Both ends of the second foam tie 16 may be bolted to the first lattice material 12, respectively.

In this case, the first lattice material 12 may be a d-shaped steel or a Z-bar so that the ends of the first foam tie 15 or the second foam tie 16 can be bolted to the first lattice material 12. [ .

3, a unit pre-assembling column unit having a predetermined length may be manufactured. Then, as shown in FIG. 4, the pre-assembly column unit 1 having a high height can be constructed by vertically connecting the unit pre-assembling column units.

In this case, the vertical bar 17 of the lower column and the upper column can be joined to the connecting plate 19. That is, the vertical reinforcing bars 17 of the upper and lower pillars are joined to the connecting plate 19 by engaging the connecting plate 19 with the vertical reinforcing bars 17 at the ends of the pillars, without overlapping the vertical reinforcing bars 17 of the lower pillars and the upper pillars, Welded to each other.

Therefore, the vertical reinforcement 17 does not need to have a separate joint length, and the vertical reinforcement 17 is cut at the column height without extending to the upper portion of the column.

As shown in FIGS. 1 and 5, each of the pre-assembly column units 1 is spaced apart from each other at four corners of a mega column, and a space portion 2 is formed between neighboring pre-assembly column units 1 .

Since the passage of the operator is secured by the space portion 2, the operator can perform various necessary operations in the column.

That is, the pre-assembled column unit 1 is coupled to the base or lower pre-assembled column unit 1, or the inner-adjacent preform 11 of the pre-assembled column unit 1 is connected to the fourth lattice material 22 Work and the like can be performed smoothly in the column.

6 (a) to 6 (b), the cross-sectional size of the mega column can be adjusted by adjusting the width of the space portion 2. [ Therefore, the size of the mega column can be adjusted while using the standardized pre-assembled column unit (1).

It is also possible to additionally provide auxiliary line assembly column units between neighboring pre-assembly column units 1.

The adjacent mold steel members 11 on the outer side of the neighboring pre-assembled column unit 1 are connected to each other by the third lattice material 21 and the adjacent mold steel members 11 on the inner side of the neighboring pre- And the second die 23 is coupled to the outside of the third lattice material 21. The second die 23 is connected to the fourth lattice material 22,

The joining of neighboring pre-assembled column units 1 can be done in the field and the second formwork 23 can be constructed as a field-mounted permanent formwork.

The third lattice material 21 adheres to the inside or outside of the mega column and the fourth lattice material 22 adheres to the space 2 formed inside the mega column.

The third and fourth lattice materials 21 and 22 can be coupled to the cast steel 11 with fastening members such as bolts so that both ends thereof are positioned inside or outside the corresponding cast steel 11, respectively.

The third and fourth lattice materials 21 and 22 may be steel plates having various cross-sectional shapes such as flat bars, a-shaped steel, and c-shaped steel.

In the present invention, the first lattice material 12 and the third lattice material 21 located on the outer surface of the megacolumn can be constituted by Z bar.

The mega column should support the concrete side pressure by both the first and third lattice materials 12 and 21 and the first and second dies 14 and 23. Therefore, the first and third lattice materials 12 and 21 are made of Z bar having high rigidity to support the concrete side pressure.

In addition, when the first and third lattice materials 12 and 21 are constituted by Z bars, it is advantageous to maintain the coating thickness of the member.

As can be seen from FIG. 1, the first formwork 14 and the second formwork can be arranged so that the longitudinal direction thereof is perpendicular to the first and second formwork forms, which are alternately formed with the floor and the floor.

The golf deck form may be formed by bending an iron plate so as to alternately form a crest and a floor, and the longitudinal direction of the crest or floor is aligned with the longitudinal direction of the column.

The mega column has a large form area, and the form weight can not be ignored when a general form is used. Therefore, the mold deck weight can be reduced by using the deck deck form which can be used as lightweight permanent form.

The deck deck form is strong in out-of-plane stiffness, so it can withstand the weight of concrete and the load of concrete before curing.

The golf deck formwork may be coupled to the first and third lattice materials 12 and 21 by any one of a direct coupling screw, spot welding, pop rivet, or a screw.

7 is a perspective view showing a stepwise process for a method of constructing a mega column according to the present invention.

The construction method for the mega column of the present invention described above with reference to Figs. 1 to 6 is shown in Figs. 7 (a) to (d).

As shown in FIG. 4, the mega column of the present invention can be manufactured by factory-manufacturing four pre-assembled column units 1 each having a length in the up-and-down direction and then bringing them into the field and then coupling them together. 7 (a) to 7 (d), a method of constructing a megacolumn will be described with reference to a part of the pre-assembly column unit 1 whose vertical length is constant.

In the method of constructing the mega column according to the present invention, (a) four pre-assembled column units 1 are arranged at four corners of the mega column so as to be spaced from each other to form a space portion 2 therebetween (FIG. 7 (a) ).

The prefabricated column unit 1 can be manufactured using only mechanical bolt joints at the factory without using welding joints.

The pre-assembly column unit 1 is brought to the site while being coupled to the first formwork 14, and the first formwork 14 can be utilized as a permanent formwork.

(B) The adjacent pre-assembly column unit 1 is connected to the third lattice material 21 at three sides of the mega column, and the second formwork 23 is attached (FIG. 7 (b)).

One surface of the mega column, to which the third lattice material 21 and the second die 23 are attached, except for the three surfaces, enters the space portion 2 inside the column and the work 4 for attaching the fourth lattice material 22 It is used as an access road to carry out various necessary work such as.

Next, (c) the inner edge of the neighboring pre-assembly column unit 1 is interconnected to the fourth lattice material 22 (FIG. 7 (c)).

The fourth lattice material 22 interconnects the mold steels 11 of the pre-assembled column units 1 so as to interconnect the inner edges of the neighboring pre-assembly column units 1.

7 (d), the adjacent pre-assembling column unit 1 is connected to the third lattice material 21 on the other surface of the mega column, and the second formwork 23 is attached (Fig. 7 (d) ).

The step (d) may be performed inside or outside the mega column.

Therefore, in order to perform the step (c), the worker entering the space part 2 performs step (d) outside the megacolumn after leaving the outside, or the worker entering the space part 2 in step (c) (D) may be performed inside the megacolumn by attaching the third lattice material 21 and the second die 23 to the other surface of the mega column on the inner side of the space portion 2. [

In the latter case, the operator can move to the top by riding the ladder after step (d) and proceed to the outside of the column or proceed to the upper column construction successively.

After completion of the skeleton of the mega column through the steps (a) to (d), as shown in FIG. 1, the concrete side band is supported by attaching the form band 3 to the outside of the mega column using a metal bar or the like .

Finally, (e) concrete is laid and cured in the pre-assembly column unit 1 and the space portion 2, and the construction is completed.

The second die 23 and the third lattice material 21 may be coupled in advance and then attached to the cast steel 11 of the pre-assembly column unit 1 in the steps (b) and (d).

In this case, the third lattice material 21 and the second formwork 23 can be brought into the factory by pre-attaching at the factory, and construction can be simplified by reducing the burden on site work.

1: pre-assembly column unit 11: mold steel material
12: first lattice material 13: second lattice material
14: first form 15: first form tie
16: second form tie 17: vertical reinforcement
18: U-shaped rebar 19: Connecting plate
2: space part 21: third lattice material
22: fourth lattice material 23: second die
3: Formwork band

Claims (9)

The present invention relates to a mega column constructed by assembling four pre-assembled column units (1) and placing concrete therein,
The pre-assembled column unit 1 includes a plurality of mold steels 11, a first lattice material 12 interconnecting adjacent mold steels 11 constituting the outer surface of the mega column, A second lattice material 13 for interconnecting neighboring mold steels 11 constituting a surface of the first lattice material 12 and a first die 14 attached to an outer surface of the first lattice material 12,
Each of the pre-assembly column units 1 is spaced apart from each other at four corners of the mega column, and a space 2 is formed between neighboring pre-assembled column units 1,
The adjacent mold steel members 11 on the outer side of the neighboring pre-assembly column unit 1 are interconnected by the third lattice material 21 and the adjacent mold steel members 11 on the inner side of the neighboring pre- Is connected to a fourth lattice material (22), and a second die (23) is coupled to the outside of the third lattice material (21).
The method of claim 1,
Characterized in that the pre-assembly column unit (1) has a first foam tie (15) coupled between one side of the first lattice material (12) and the mold steel material (11) located at the inner edge.
The method of claim 1,
And a second foam tie (16) connecting one side of a neighboring first lattice material (12) is coupled to an outer edge of the pre-assembly column unit (1).
The method of claim 1,
And a plurality of vertical reinforcing bars (17) are arranged on the surface of the pre-assembly column unit (1) constituting the outer surface of the mega column.
5. The method of claim 4,
And a U-shaped reinforcing bar (18) having an end directed toward the inside of the pre-assembly column unit (1) is coupled to the vertical reinforcing bar (17).
The method of claim 1,
Wherein the first lattice material (12) and the third lattice material (21) are Z-bars.
The method of claim 6,
Wherein the first mold (14) and the second mold (20) are arranged in a longitudinal direction perpendicular to the first and second mold deck molds, the first and second molds being alternately formed.
A method of constructing a megacolumn according to any one of claims 1 to 7,
(a) installing the four pre-assembled column units 1 at four corners of the mega-column so as to form a space 2 therebetween;
(b) connecting adjacent prefabricated column units (1) on three sides of the mega column to a third lattice material (21) and attaching a second formwork (23);
(c) interconnecting the inner edge of the neighboring prefabricated column unit 1 with the fourth lattice material 22;
(d) connecting the neighboring pre-assembled column unit (1) to the third lattice material (21) on the other side of the mega column and attaching the second die (23); And
(e) placing concrete in the pre-assembly column unit (1) and the space part (2); ≪ RTI ID = 0.0 > 1, < / RTI >
9. The method of claim 8,
Wherein the second die (23) and the third lattice material (21) are preliminarily bonded in the step (b) and the step (d) and then attached to the mold steel material (11) of the pre-assembly column unit (1) Method of construction of column.

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