KR20210155380A - A construction period shortening type topdown structure using the underground core wall column and the temporary pole for transmitting the structural load on the ground floor and construction period shortening type topdown construction method using the same - Google Patents

Abstract

The present invention relates to a construction period shortening type reverse rudder structure using an underground core wall side reverse rudder column and a temporary column for transmitting a structural load on a ground floor and a construction period shortening reverse piercing method using the same. The present invention can provide the construction period shortening type reverse rudder structure using a joint structure of a core wall and a semi-buried temporary column, comprising: the temporary column erected adjacent to the core wall; and a connecting unit having one end unit joined to the temporary column and the other end unit fixed to the core wall, connecting the temporary column and the core wall to each other. The temporary column is installed before core wall construction, but a lower end part is buried in a basement floor. An upper part is joined to a horizontal member of a ground floor, and an upper end part is erected to extend to an upper part of a ceiling of the ground floor. According to the above, a construction period of building construction can be effectively shortened because construction of the ground floor can be started even before construction of a core of a first basement floor is completed.

Description

A CONSTRUCTION PERIOD SHORTENING TYPE TOPDOWN STRUCTURE USING THE UNDERGROUND CORE WALL COLUMN AND THE TEMPORARY POLE FOR TRANSMITTING THE STRUCTION PERIOD SHORTENING TYPE TOPDOWN STRUCTURE USING THE UNDERGROUND CORE WALL COLUMN AND THE TEMPORARY POLE FOR TRANSMITTING LOAD ON THE GROUND FLOOR AND CONSTRUCTION PERIOD SHORTENING TYPE TOPDOWN CONSTRUCTION METHOD USING THE SAME}

The present invention relates to the underground core wall side reverse hammering temporary column and the above ground floor frame load using the joint structure of the core wall for the early start of the upper layer after completing the construction layer slab, which is the floor for loading excavation equipment and materials when applying the reverse drilling method in the downtown area It relates to an air-shortened reverse rudder structure using a temporary pole for transmission and a shortened air piercing method using the same, and more particularly, to a temporary reverse rudder column installed at the location where the core wall of the lower layer of the slab in the construction layer will be constructed, and a frame borne by the core wall of the ground floor and By using the joint structure of temporary columns for self-weight transfer, it is possible to shorten the construction period by enabling the above-ground framing work to be performed even before the core wall of the floor directly below the floor slab is completed, thereby reducing the construction period. It relates to an air shortening type reverse punching structure using a temporary post for transmission and a short air type reverse punching method using the same.

In general, when constructing a building, the open cut method of constructing the structure after excavation is completed without a temporary retaining membrane or the installation of a horizontal earth pressure support temporary material (strut and earth anchor) after pre-construction of an external underground wall (temporary retaining wall or underground continuous wall) After excavation is completed, the top-down construction method can be constructed in a direction from the top to the bottom, unlike the straight drilling method, which starts from the lower layer and proceeds in the order of the upper layer by repeating the excavation and excavation work.

Here, the top-down method refers to the construction of the external underground wall (temporary retaining wall or continuous underground wall), the underground column, and the cast-in-place pile supporting the column before excavation work, and then the basement slab and excavation work are carried out step by step from top to bottom. It is a construction method that supports earth pressure by repeatedly forming underground structures. This construction method can be stably applied to large-scale excavation, deep excavation, or downtown areas with many adjacent buildings, which are difficult to plan with the conventional drilling method. Therefore, it can be said that it is an all-weather construction method that can be installed even in rain and snow.

In addition, the top-down method can be advantageous in terms of shortening the construction period because the underground construction and the above-ground construction can be carried out in parallel. This is because it can proceed concurrently with the ground floor. In addition, the above-ground structure can be divided into core leading simultaneous casting, outer perimeter leading (or core trailing) depending on the construction method, but the columns, the core, and the floor slab must be constructed simultaneously or sequentially.

On the other hand, in the top-down method, it is possible to construct the underground outer wall and the basement column in advance before excavation, and then excavate and form the basement slab structure step by step. About one floor can be constructed after the slab is completed, and the core wall can be vertically connected and completed after a certain period of time has elapsed after excavation work and the foundation, which is the lowest floor, is completed. Temporary poles for back-beating are absolutely necessary on the wall side.

However, in the conventional top-down method, since most buildings have a larger number of above-ground floors compared to the number of underground floors, starting the construction of the above-ground part as soon as possible is advantageous in terms of shortening the construction period. There was a problem in that it was difficult to shorten the construction period because the frame work could not be started and the core wall directly below the floor had to be completed.

In other words, in order to apply the top-down method to the underground floor construction and start simultaneous construction with the above-ground floor, in general, first, the core wall should be installed on the lower floor after the work site is completed. To do this, first construct the floor slab for the workshop, and then construct one layer of the core wall after the excavation of the direct lower part or the floor of the lower layer directly below it.

Registered Patent Publication No. 10-1014796 (published on February 15, 2011)

In the present invention, when the top-down method is applied to the basement construction, the load of the above-ground core wall is reduced to reduce the construction period by starting the basement and above-ground framing work at the same time even if the construction of the lower-level core wall is not completed. Shortened air turning type using a junction structure of temporary columns installed on the above-ground core wall so that it can be transmitted to a wall-side reverse striking temporary column and a temporary reverse striking temporary column on the wall side of the basement floor and a temporary column for transmitting the frame load on the ground floor, and an air shortening type using the same The purpose is to provide a reverse punching method.

According to one aspect of the present invention, the present invention is a temporary pillar erected adjacent to the core wall; One end is joined to the temporary pole and the other end is fixed to the core wall, and a connection part for connecting the temporary pole and the core wall to each other; includes, wherein the temporary pole is installed before the core wall construction, and the lower end is the basement floor Installed buried in the floor, the upper part is joined to the horizontal member of the ground floor, and the upper part is extended to the upper part of the ceiling of the ground floor and erected. can provide

Here, the temporary pillar, a cuttable I-beam or H-beam can be applied.

In addition, the connecting portion may include a connecting member having one side joined to the temporary pole, one side joined to the other side of the connecting member, and a fixing member fixed to the core wall at the other end.

In this case, the connecting member may be formed of any one member selected from an I-beam, an H-beam, a flat plate, and a T-bar.

Also, the fixing member may be formed of any one member selected from among an I-beam, an H-beam, and a plurality of stud bolts.

Furthermore, the fixing member may be formed of an I-beam or an H-beam, and a plurality of fixing stud bolts may be coupled to both sides of a flange of the I-beam or the H-beam.

On the other hand, the connection part, one side is joined to the temporary pillar, the other side may be configured to include a fixing connection member extending toward the core wall is fixed inside the core wall.

Here, the fixing connection member may be configured to include a plurality of stud bolts.

On the other hand, the temporary pillar, including an upper junction area joined to the ground level horizontal member, and an exposed area not joined to the horizontal member, the exposed area can be cut before completion.

According to another aspect of the present invention, the present invention (a) prepare a temporary post having a length from the floor of the basement to the upper part of the ceiling of the ground floor, and drill the temporary post in the ground to erect it adjacent to the location where the core wall of the building will be installed installing; (b) connecting a connection part having one side joined to the temporary pillar and the other side buried and fixed in the core wall by bonding to the temporary pillar; (c) installing the core wall so that the connection part is buried; (d) cutting and finishing a part of the temporary pillar before the completion of the building; providing an air shortening type reverse drilling method using the underground core wall side reverse striking temporary pillar and the ground floor frame load transmission temporary pillar, characterized in that it includes can do.

Here, the temporary pillar is configured by applying a cuttable I-beam or H-beam, and finishing the step (d) by cutting the exposed area of the temporary pillar that is not joined to the horizontal member of the building in the temporary pillar. can be

On the other hand, since the description of the technology disclosed in this specification is merely an embodiment for structural or functional description, the scope of the disclosed technology should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may have various forms, it should be understood that the scope of the disclosed technology includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the disclosed technology does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the disclosed technology is limited thereby.

In addition, the meaning of the terms described in the present invention should be understood as follows. Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly a second component may be termed a first component.

Furthermore, when it is mentioned that a certain element is "connected" to another element, it may be directly connected to the other element, but it should be understood that other elements may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. On the other hand, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the specified feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

According to the present invention, the air shortening type reverse rudder structure using the underground core wall side reverse striking temporary pillar and the above ground floor frame load transmission temporary pillar and the air shortening type reverse punching method using the same are installed adjacent to the core wall and a temporary pillar and a connection part, and through this, the first basement floor Because the construction of the ground floor can start before the construction of the core is completed, the construction period can be effectively shortened, and after completion, the temporary column and part of the connecting part can provide a structural support to the building. have.

1 is a front view showing the configuration of an air shortening type reverse rudder structure according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line “A” of FIG. 1 .
3 is a front cross-sectional view showing a state in which the air shortening type reverse rudder structure according to an embodiment of the present invention is constructed for multiple layers.
FIG. 4 is a cross-sectional view taken along line “1” of FIG. 3 .
FIG. 5 is a cross-sectional view taken along line “a” of FIG. 4 .
6 is a cross-sectional view taken along line “b” of FIG. 4 .
7 is a plan view showing another embodiment in which the fixing connection part is installed in the air shortening type reverse rudder structure according to an embodiment of the present invention.
FIG. 8 is a cross-sectional view taken along line “a” of FIG. 7 .
9 is a cross-sectional view taken along line “b” of FIG. 7 .
10 is a front view showing another embodiment in which the air shortening type reverse rudder structure according to an embodiment of the present invention is constructed for a plurality of floors.
11 and 12 are plan views showing the state of temporary pillars and wall horizontal roots in the air shortening type reverse rudder structure according to an embodiment of the present invention.

Hereinafter, a preferred embodiment will be described with reference to the accompanying drawings so that the present invention may be understood in more detail.

First, according to an embodiment of the present invention, the air shortening type reverse striking structure (hereinafter referred to as 'air shortened type reverse striking structure') using the underground core wall side reverse striking temporary pillar and the above-ground structural load transmission temporary pillar is completed before the core construction of the basement floor is completed. Since the construction of the above-ground floor can be started from before, the overall construction period can be shortened, thereby providing an economical construction structure.

To this end, the air shortened inverted structure of the present invention may be configured to include a temporary pillar 100 and a connecting portion 200 as shown in FIGS. 1 and 2 .

First, the temporary pillar 100 is erected adjacent to the core wall 10 installed in the plan design of the building.

At this time, the temporary pillar 100 is to serve as a pillar for the installation of the horizontal member 20 including the core wall 10 of the basement and above-ground floors in the top-down construction of the present invention, and as will be described later, the core wall ( 10) and the horizontal member 20 (slabs, beams, etc.) can be cut in a certain area after installation before construction is completed and before construction of these core walls 10 is completed.

For this reason, the temporary pillar 100 is preferably a cuttable I-beam or H-beam applied, and the cross-sectional area or size of the temporary pillar 100 member can be variously changed.

Here, the temporary pillar 100 is installed before the core wall 10 construction, and the lower end is buried in the basement floor, and the upper part is joined to the ground level horizontal member 20 so that the upper end extends to at least the upper part of the first floor above the ceiling. can be built

On the other hand, the temporary pillar 100 may include an upper junction area joined to the above ground level horizontal member 20 and an exposed area that is not joined to the horizontal member 20, and the double exposed area is to be cut and finished before completion. can The details of this will be looked at in the construction method to be described later.

The connection part 200, one end is joined to the temporary pillar 100 and the other end is fixed to the core wall 10, serves to connect the temporary pillar 100 and the core wall 10 to each other.

In detail, the connection part 200 has a connection member 220 having one side bonded to the temporary pole 100 , and one side bonding to the other side of the connection member 220 , and the other side is fixed to the core wall 10 . The member 210 may be included.

At this time, the connecting member 220, like the above-mentioned temporary pillar 100, it is preferable that a cuttable member is used, in detail, the web is joined to the temporary pillar 100 I-beam, H-beam, flat plate and T It may be formed of any one member selected from among the bars. At this time, the connecting member 220,

The fixing member 210 may be viewed as corresponding to an Erection Column (EC), and may be disposed at a position corresponding to the core wall 10 so as to be located inside the core wall 10 to be constructed thereafter.

The fixing member 210 may be formed of any one member selected from among an I-beam, an H-beam, and a plurality of stud bolts.

At this time, when the fixing member 210 is formed of an I-beam or an H-beam 211, a plurality of fixing stud bolts 212, FIG. 4) can be combined.

The fixing member 210 may be disposed along the upward direction from a predetermined height as shown, but is not limited thereto, and although not shown, may contact the ground or extend below it.

On the other hand, unlike the above connection part 200, one side is joined to the temporary post 100, the other side is extended toward the core wall 10, the fixing connection member 230 fixed inside the core wall 10. may be included.

In this case, the fixing connection member 230 may be configured to include a plurality of stud bolts as shown (see FIG. 7 ), and in the embodiment including the fixing member 210 and the connection member 220 described above It can also be seen that the connection member 220 is omitted.

Hereinafter, with reference to the drawings, it will be described in detail with respect to the air shortening type reverse rudder structure of the present invention.

3 is a cross-sectional view conceptually illustrating an air shortening type inverse rudder structure according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line “1” in FIG. 3, and FIG. 5 is a cross-sectional view taken along line “a” in FIG. , FIG. 6 is a cross-sectional view taken along line “b” of FIG. 4 . FIG. 7 is a cross-sectional view of a region “2” of FIG. 3 .

First, FIG. 3 exemplarily shows the structure for the first, second, and third floors of a building, and as shown in FIGS. 4 and 5 , on both sides of the temporary pillar 100 , the horizontal members 31 and 40 , horizontal beam) and a separate horizontal member 30 extending in the intersecting direction may be joined.

6 shows a structure for fixing such a horizontal member to the core wall 10, and FIG. 7 is a view showing a case in which the fixing connection part is directly connected to the temporary post 100 in the air shortening type reverse rudder structure of the present invention. Unlike FIG. 3 , the configuration of the connecting member 220 may be omitted.

In this case, in the case of the air shortened inverted structure, the load to be borne by the temporary pole 100 will decrease as it goes to the upper part of the temporary pole 100 , so the amount of material for joining the temporary pole 100 to the core wall 10 . Since it can be reduced compared to the lower floor, it can be constructed as a fixing connection part.

8 and 9 are views showing in detail a cross-section taken along the line "2" of FIG. 3, in which stud bolts are joined as a fixing connection member 230 to a temporary member in the upper layer, and the temporary pillar 100 and the core wall 10 ), and as shown in FIG. 9, reinforcing bars of various shapes can be reinforced. Here, the hatched portion of FIG. 8 represents an exposed area to be cut before completion, and when the exposed portion of the temporary pillar 100 and the connecting portion 200 is cut, it becomes as shown in FIG. 9 .

FIG. 10 is a view exemplarily showing a structure in which the air shortening type inverse rudder structure of the present invention is constructed in another embodiment on a building, and shows the structure of the basement of the building.

Looking at this, in the air shortening type reverse rudder structure, the fixing member 210 is composed of a plurality of stud bolts, and the connecting member 220 is composed of a T-bar shape in which the web is joined to the temporary post 100, and in FIG. On the other hand, the load to be borne by the temporary pole 100 decreases as it goes to the upper part of the temporary pole 100, and the load-bearing structure of the building itself, including the core wall 10, is completed as it goes to the lower part of the temporary pole 100. Therefore, the load to be borne by the temporary pillar 100 can be reduced compared to the high-rise, so the shape and dimensions of the temporary pillar 100, the connecting member 220 and the fixing member 210 can be variously changed as needed. can

11 and 12 are plan views showing the state of the temporary pillar 100 and the wall horizontal root in the air shortening type reverse rudder structure according to an embodiment of the present invention. 11 and 12 , the air shortened reverse rudder structure of the present invention is reinforced in various forms to complement the performance of the horizontal reinforcing bars that are rigidly joined and discontinued at the location where the temporary column 100 and the core wall 10 are joined. Reinforcing bars and the like may be additionally added.

Hereinafter, an air shortening type reverse punching method (hereinafter referred to as an 'air shortening type reverse punching method') using the underground core wall side reverse punching temporary pillar and the above ground floor frame load transmission temporary pillar of the present invention will be looked at.

First of all, in the air shortening reverse drilling method of the present invention, in the general top-down construction method, the core of the first basement is first constructed using the temporary pillar 100 and the construction proceeds up and down from the first basement core, so the temporary pillar 100 ), only about 1 meter of women's clothing protrudes above the floor surface of the first floor above the ground. In contrast, in the embodiment of the present invention, the temporary pillar 100 extends to a height of at least the ceiling of the first floor. Therefore, this is to directly connect the horizontal beam to the temporary pillar 100 and start the installation of the beam and slab on the first floor, since there is no need to bear a large load yet at the height of the first floor. do.

In the air shortening reverse drilling method of the present invention, a temporary retaining wall 100 having a length from the floor of the basement floor to the upper part of the ceiling of the ground floor is prepared after a normal retaining wall installation work is first performed in order to construct a building. At this time, the temporary pillar 100 may be manufactured in a factory or on-site with a set length from the floor of the basement floor to the upper part of the ceiling of the specified ground floor, and may be prepared to extend to the upper part of the third floor as shown.

As described above, the temporary pillar 100 extends down to the lowest level of the basement, and may extend up to a predetermined level designed above. For example, the temporary pillar 100 may extend to the ceiling height of the third floor above the ground as needed, but is not limited thereto, and may extend to a higher or lower floor.

When the temporary pillar 100 is prepared in this way, the temporary pillar 100 is erected and installed by drilling the ground at the location where the temporary pillar 100 adjacent to the location where the core wall 10 is to be installed by a set separation distance.

At this time, various methods may be used for drilling the ground, including percussion rotary drilling (PRD), reverse circulation drilling (RCD), and the like.

Next, the connection part 200 is connected to the temporary pillar 100 and installed. At this time, the connection part 200 has a configuration in which one side is joined to the temporary pillar 100 and the other side is embedded and fixed in the core wall 10 , and a configuration or a connection member including a connection member 220 and a fixing member 210 . (220) and the fixing member 210 may be applied to the fixing connection formed integrally.

On the other hand, in the joint installation of the connection part 200 in the field, the connection member 220 and the fixing member 210 are bonded to each other before or manufactured in one piece, and in the on-site construction, the connection part 200 bonded to the temporary pillar 100 in this way ) of the connection member 220 or by bonding the above-described fixing connection member 230, the bonding (welding) process in the field can be minimized.

When the construction of the temporary pillar 100 and the connecting part 200 is completed according to the above, the core wall 10 is installed so that the connecting part 200 is buried. Here, as described above, in the present invention, the construction of the first basement floor can also be carried out while the beams and slabs on the first floor are installed in the present invention. Unlike this that can be started, work on the ground floor can be started before the core of the first basement floor is completed, which can significantly shorten the construction period.

That is, in the air shortening reverse drilling method of the present invention, the temporary pillar 100 and the fixing member 210 can extend upward together at the height above the first floor, and the work of the basement floor is also progressed as the construction of the first floor begins. Therefore, at a certain point, the core of the first basement and first floor is completed, and the core continues to the upper floor.

In addition, the core reaches the position of the anchoring member at a specific designed height, and concrete is poured around the anchoring member 210 so that the anchoring member 210 can be embedded in the core, and the core wall 10 has a structural design It goes without saying that various reinforcing bars can be arranged depending on the situation.

When the completion of the building such as the core wall 10 construction approaches, it may be finished by cutting a part of the temporary pillar 100 before the completion of the building. At this time, the temporary pillar 100 is, since a cuttable I-beam or H-beam is used, the temporary pillar 100 that is not joined to the horizontal member 20 (horizontal beam) of the building in the temporary pillar 100 is exposed. The area can be cut. Here, the horizontal member 20 may be a permanent member constituting a part of the load-bearing structure of the building, or may be a temporary member that is temporarily erected.

In other words, the joint portion corresponding to the position where the horizontal beam is joined among the temporary post 100 and the connecting member 220 may remain as a part of the load-bearing structure of the building, and horizontal among the temporary post 100 and the connecting member 220 . Exposed parts other than the part corresponding to the position where the beam is joined may be cut and removed at any point before the completion of the building.

Furthermore, a horizontal beam may be bonded to the temporary pillar 100 . This horizontal beam can be permanently used as a load-bearing member to bear the actual load of the building. Here, the horizontal beam can be applied to the cheolgolbo, it is possible to construct a slab based on the cheolgolbo installed in this way, and to construct other bearing members of the building.

In addition, as the construction of the building progresses, it is no longer necessary to install beams and slabs depending on the temporary pillars 100 at a specific height, and construction can be performed by already completed cores or permanent steel members.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is merely exemplary, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. You can do what you can do.

10: core wall 20, 30, 31, 40: horizontal member
100: temporary column 200: connection part
210,211,212: fixing member 220,221,222,223: connecting member
230: fixing connection member

Claims (6)

Temporary columns erected adjacent to the core wall;
One end is joined to the temporary post and the other end is fixed to the core wall, and a connecting part connecting the temporary post and the core wall to each other;
The temporary pillar is
It is installed before the core wall construction, and the lower part is buried in the basement floor, and the upper part is joined to the ground level horizontal member so that the upper end is extended to the upper part of the ground floor ceiling and erected. Air shortening type reverse rudder structure using temporary columns for dragons.
The method of claim 1,
The temporary pillar is
An air shortening type reverse rudder structure using an underground core wall side reverse rudder temporary column and a temporary pole for transmitting structural load on the ground floor, characterized in that a cutable I-beam or H-beam is applied.
3. The method of claim 2,
The connection part,
a connecting member having one side joined to the temporary pillar;
One side is joined to the other side of the connection member, and the other side comprises a fixing member fixed to the core wall.
4. The method of claim 3,
The connecting member is
I-beam, H-beam, flat plate, and T-bar, characterized in that formed of any one member selected from the underground core wall side reverse rudder construction using a temporary pillar for load transmission of the above-ground skeletal structure.
Preparing a temporary pillar having a length from the floor of the basement to the upper part of the ceiling of the ground floor, drilling the temporary pillar in the ground to erect and install the temporary pillar adjacent to the location where the core wall of the building will be installed (S110);
connecting a connection part having one side joined to the temporary pillar and the other side buried and fixed in the core wall by bonding to the temporary pillar (S120);
installing the core wall so that the connection part is buried (S130);
A step (S140) of cutting and finishing a part of the temporary pillar before the construction of the building is completed. The air shortening type reverse drilling method using the underground core wall-side reverse striking temporary pillar and the above-ground structural load transmission temporary pillar, characterized in that it includes.
6. The method of claim 5,
The connection part,
A connecting member having one side joined to the temporary pole and formed of any one member selected from an I-beam, an H-beam, a flat plate, and a T-bar;
One side is joined to the other side of the connection member, the other side is fixed to the core wall, characterized in that it comprises a fixing member formed of any one member selected from among I-beam, H-beam, and a plurality of stud bolts A short-term reverse drilling method using the underground core wall side reverse piercing temporary pillar and the above-ground framing load transmission temporary pillar.

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