KR100614794B1 - Construction method using skip-floor - Google Patents

Abstract

The present invention relates to a new construction method employing a construction method that skips one floor or two floors.

The present invention adopts a construction method that skips one or two floors when constructing a concrete / steel structure of a high-rise concrete building so that work such as formwork, reinforcing steel assembly, concrete placing and curing can be simultaneously performed on at least two floors. In this way, the input and operation of manpower and materials can be efficiently carried out, and in particular, the construction period can be shortened from 30% to up to 50%, and a new construction method can ultimately significantly reduce construction management and financial costs. to provide.

High-rise concrete building, concrete / steel structure, skip method, air shortening

Description

Construction method using skip-floor}             

Figure 1a to 1f is a schematic diagram showing an embodiment of the construction method using a layered construction according to the present invention

2a to 2f is a schematic view showing another embodiment of the construction method for the layered construction according to the present invention

<Explanation of symbols for main parts of drawing>

10a ~ 10f, 20a ~ 20f: Diaphragm concrete / reinforced structure

11a ~ 11f, 21a ~ 21f: pillar structure 12a ~ 12f, 22a ~ 22f: floor structure

13a ~ 13d: Skip Floor Floor Structure 23a ~ 23d: Skip Bottom Floor Structure

24a ~ 24c: Skip upper floor structure 30: Copper bar

The present invention relates to a construction method using a layered construction, and more particularly, by adopting a construction method that skips one or two floors, at least two or more operations such as formwork, reinforcing steel assembly, concrete placement and curing are performed. At the same time, it is possible to efficiently input and operate manpower and materials, and above all, to a new construction method that can significantly shorten the construction period.

In the case of concrete / steel structures, which are generally preceded for the construction of high-rise concrete buildings, formwork and reinforcing reinforcement for building walls and floors are first performed, followed by concrete pouring and curing, and then the second and third floors. To build the formwork, reinforcing bar, concrete placement and curing of the top floor is adopted.

For example, when framing a high-rise concrete building, the rebar works are first arranged horizontally and horizontally at the site where the outer wall and the inner wall are to be installed, and the concrete is then poured by installing internal and external formwork on both sides of the reinforcement. When this is completed, reinforce the slab reinforcing bar on the upper side, install the formwork, and then build the slab through concrete placing and curing, and when the interior and exterior walls and slabs are completed, the form is demolished, insulated, and installed We can complete construction on one floor by performing one by one.

In the case of the construction method which is constructed one by one from the lowest floor to the highest floor as described above, there is a disadvantage in that the construction period is increased due to the continuity of the construction work such as waiting for the period of concrete casting and curing, etc. In the case of constructing a high-rise concrete building, there is a disadvantage in that efficient input, layout, and operation of manpower are not properly performed due to such air delay.

Recently, as various buildings become higher and legislated to be sold or leased after construction, the financial burden of developers is greatly increased. For this reason, efforts are being made in various fields to reduce air.

Therefore, the present invention has been devised in view of such a point, and adopts a construction method that skips one or two floors when constructing a concrete / steel structure of a high-rise concrete building, such as formwork installation, reinforcing steel assembly, concrete pouring and curing, etc. By allowing work to be performed simultaneously on at least two floors, it is possible to efficiently input and operate manpower and materials, and in particular, to shorten the construction period from 30% to up to 50%, and ultimately the construction management cost and The aim is to provide new construction methods that can significantly reduce financial costs.

In order to achieve the above object, the present invention provides a construction method for constructing a concrete / steel structure of a high-rise concrete building, and installs formwork, reinforcing steel assembly, and concrete in a manner of skipping one or two floors when constructing a concrete / steel structure. Curing work is carried out to build the stratified concrete / steel structure, but formwork of the stratified concrete / steel structure is sequentially installed on the upper layer, reinforcement assembly, concrete placing and curing work and formwork installation on the skip layer floor structure, reinforcement assembly, It is characterized in that the concrete pouring and curing work together.

In addition, the formwork, reinforcing bars, concrete placing and curing work for the skip layer floor structure is characterized in that it is carried out after at least two-stage layered concrete / steel structure construction.

In addition, when the two floors are skipped when building the concrete / steel structure, the formwork of the layered concrete / steel structure is sequentially installed, the reinforcing steel assembly, the concrete placing and curing work and the formwork for the skip layer floor structure of the lower two layers. It is characterized by the parallel installation, reinforcing bars, concrete pouring and curing work.

In addition, the floor structure and the skip layer floor structure of the layered concrete / steel structure is characterized in that the construction using a general formwork, deck plate, or reinforced bar deck plate.

In addition, the formwork for the construction of the floor structure and the skip layer floor structure of the layered concrete / steel structure is supported by a group in the lower layer of the pre-construction, or a suspension method of hanging the formwork on the upper layer of the pre-construction, or the line The bracket is installed on the column structure of the constructed concrete / steel structure, and the bracket is placed on the formwork.

In addition, the column structure of the laminated concrete / steel structure is characterized in that any one of the CFT column, CFCT column, hollow PC column can be applied.

The construction method provided by the present invention is a method of constructing a concrete / steel structure in a manner of skipping one floor or skipping two floors in consideration of supporting workability of a copper bar, joint of reinforcing bars, and securing safety during construction according to the floor height. .

1) If you skip one floor

Concrete / steel structures are constructed to a height of approximately 7m in the case of columnar structures, so that general casting methods can be applied.

In addition, the rebar line fabrication (Pre fabrication) is preferred for the convenience of construction of vertical rebar for the column structure.

In addition, in the case of a copper bar for supporting the formwork can be used for general die copper (V1 ~ V4).

In addition, it is also possible to use a general formwork for the construction of the slab, that is, floor structure, in consideration of the efficiency and economic efficiency of the work it is possible to use a composite deck plate or reinforced bar deck plate.

In addition, a fixing reinforcing bar is constructed in order to connect the pillar structure and the floor structure of the skipped layer (skip layer).

At this time, the rebars below D16 use bent rebars, and the rebars above D19 use press welding or coupling joints.

2) If you skip two floors

Concrete / steel structures are constructed at a height of approximately 7m or more and less than 10m in the case of columnar structures, which can cause segregation of concrete materials when the general pouring method is applied.

Therefore, in this case, it is preferable to use a method of pouring the concrete pouring pipe down to the lower part of the column structure.

Here too, the rebar line fabrication method (Pre fabrication) is preferred for the convenience of construction of vertical rebar for the column structure.

In addition, the pillar structure may be applied to a concrete filled in tube (CFT) column, a concrete filled in carbon tube (CFCT) column, a hollow PC column, and the like.

In addition, in the case of the form circle, it is preferable to use a system circle using a steel pipe because it is difficult to use a general form copper.

In addition, general formwork may be used for the construction of the floor structure, in consideration of the efficiency and economic efficiency of the work can be used a plain deck formwork using a composite deck plate or a reinforced deck plate.

In particular, as a formwork supporting method for the construction of floor structures, a bracket formwork method (for example, a bracket is installed on a pillar structure and a formwork is placed on the pillar support) or a suspension formwork method (for example, the upper layer of the pre-installed layer) By extending the connection means such as wires down from the floor structure, a method of hanging a formwork thereon may be applied.

In addition, a fixing reinforcing bar is constructed in order to connect the pillar structure and the floor structure of the skipped layer (skip layer).

At this time, the rebars below D16 use bent bars and the rebars above D19 use press welding or coupling joints.

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

Figure 1a to 1f is a schematic diagram showing an embodiment of the construction method using a layered construction according to the present invention.

As shown in FIGS. 1A-1F, the construction here shows a method of building a diaphragm concrete / rebar structure in a way that skips one floor.

After completion of the first floor, the first floor of the second floor concrete structure 11a and the bottom structure (12a) consisting of a two-layered concrete / reinforced structure (10a) is constructed (Figure 1a).

Here, reference numeral 30 denotes a group.

That is, formwork (or deck plate) for the construction of the first and second floor pillar structures and the third floor floor structure is installed, the reinforcing bars are assembled, and concrete is then cured.

At this time, when the reinforcing bars are assembled, the skip layer is installed together with the reinforcing bars.

After the construction of the first-tier diaphragm concrete structure, the second-level diaphragm concrete / reinforced structure 10b consisting of the column structure 11b and the bottom structure 12b is constructed while skipping the fourth floor (FIG. 1B).

In other words, formwork (or deck plate) for the construction of the three- and four-tiered pillar structure and the five-story floor structure is assembled, the reinforcing bars are assembled, and the concrete is then cured.

At this time, when the reinforcing bars are assembled, the skip layer is installed together with the reinforcing bars.

After the construction of the two-layered diaphragm concrete structure, the three-layered diaphragm concrete / reinforced structure 10c consisting of the column structure 11c and the bottom structure 12c is constructed while skipping the sixth floor (FIG. 1C).

That is, formwork (or deck plate) for the construction of the five- and six-story pillar structure and seven-story floor structure is assembled, the reinforcing bars are assembled, and then cured after pouring concrete.

At this time, when the reinforcing bars are assembled, the skip layers are installed together with the connecting bars.

At the same time, the skip layer bottom structure 13a is constructed.

That is, formwork (or deck plate) for the construction of the two-story floor structure is installed, the reinforcing bars are assembled and then cured after concrete pouring.

In other words, construction of the three-layered diaphragm concrete / reinforced structure and skipped floor structure are performed simultaneously.

After the three-stage layered concrete structure construction, the four-stage layered concrete / reinforced structure (10d) consisting of the column structure (11d) and the bottom structure (12d) while skipping the eighth floor (FIG. 1D).

That is, formwork (or deck plate) for the construction of the seven-story and eight-story pillar structures and the nine-story floor structure is assembled, the reinforcing bars are assembled, and the concrete is then cured.

At this time, when the reinforcing bars are assembled, the skip layers are installed together with the connecting bars.

At the same time, a skip layer bottom structure 13b is constructed.

That is, formwork (or deck plate) for the construction of the four-story floor structure is installed, the reinforcing bars are assembled, and then cured after concrete pouring.

In other words, construction of the four-layered diaphragm concrete / reinforced structure and skipped floor structure are performed simultaneously.

While repeating the above process to build a stratified concrete / reinforced structure up to the top layer and parallel construction of the floor structure for the skip layer (Fig. 1e and 1f).

In one embodiment of the present invention has been shown to build up to 13 floors, of course, it can be further constructed through the above-described repeated construction.

Figure 2a to 2f is a schematic diagram showing another embodiment of the construction method for the layered construction according to the present invention.

As shown in Figures 2a to 2f, the construction here shows a method of building a diaphragm concrete / reinforced structure in a way that skips two floors.

After completion of the first floor, the first and second stratified concrete / reinforced structures 20a consisting of the column structure 21a and the floor structure 22a are constructed while skipping the second and third floors (FIG. 2A).

Here, reference numeral 30 denotes a group.

That is, formwork (or deck plate) for the construction of the first and third floor pillar structure and the four-story floor structure is assembled, the reinforcing bars are assembled, and then cured after pouring concrete.

At this time, when the reinforcing bars are assembled, the skip layer is installed together with the reinforcing bars.

After the construction of the first-tier diaphragm concrete structure, the second-level diaphragm concrete / reinforced structure 20b consisting of the column structure 21b and the bottom structure 22b is constructed while skipping the fifth and sixth floors (FIG. 2B).

That is, formwork (or deck plate) for the construction of the four- to six-story pillar structure and the seven-story floor structure is assembled and the reinforcing bars, and then cured after pouring concrete.

At this time, when the reinforcing bars are assembled, the skip layer is installed together with the reinforcing bars.

After the construction of the two-layered diaphragm concrete structure, three-stage diaphragm concrete / reinforced structure 20c consisting of the column structure 21c and the bottom structure 22c is constructed while skipping the eighth and nineth floors (FIG. 2C).

That is, formwork (or deck plate) for the construction of the pillar structure and floor layer structure of the 7th to 9th floors are installed, the reinforcing bars are assembled, and the concrete is then cured.

At this time, when the reinforcing bars are assembled, the skip layers are installed together with the connecting bars.

At the same time, a skipped lower floor structure 23a is constructed.

That is, formwork (or deck plate) for the construction of the two-story floor structure is installed, the reinforcing bars are assembled and then cured after concrete pouring.

In other words, the construction of the three-stage stratified concrete / reinforced structure and the construction of the skipped lower floor structure are performed at the same time.

After the construction of the three-layered diaphragm concrete structure, the four-layered diaphragm concrete / reinforced structure 20d consisting of the column structure 21d and the bottom structure 22d is constructed while skipping the 11th and 12th floors (FIG. 2D).

That is, formwork (or deck plate) for the construction of the pillar structure of 10 to 12 stories and floor of 9 stories, and the reinforcing bars are assembled, and then cured after pouring concrete.

At this time, when the reinforcing bars are assembled, the skip layers are installed together with the connecting bars.

At the same time, the skip upper layer bottom structure 24a and the skip lower layer bottom structure 23b are constructed.

That is, formwork (or deck plate) for the construction of the three-story floor structure and five-story floor structure is installed, the reinforcing bars are assembled, and then cured after concrete pouring.

In other words, the construction of the four-layered diaphragm concrete / reinforced structure and the skip upper and lower floor structures are performed simultaneously.

Repeating the above process to build a stratified concrete / reinforced structure up to the top floor and with the construction of the floor structure for the skip upper and lower layers in parallel (Fig. 2e and 2f).

In one embodiment of the present invention has been shown to build up to 19 floors, of course, it is possible to build more floors by repeating the above.

As such, the method provided by the present invention is very effective when a short construction period is required because it is a method of skipping one floor or two floors, and when the reference floor is applied to a high-rise building with many reference floors, it can be expected to be more effective and economical.

Since the construction method provided by the present invention greatly depends on the manpower input plan and the material input plan according to the construction plan, it is preferable to consider the construction order of the construction method and then establish the construction plan.

For example, it is desirable to plan the construction by considering whether two or three floors are to be placed at the same time or every other day for continuous utilization of input personnel.

As described above, the construction method for the layered construction of the present invention has the following advantages.

1) It can reduce the construction period of building frame from 30% up to 50%.

2) Manpower can be input or operated most efficiently according to appropriate construction plans.

3) By constructing the column structure to a sufficient height, the effect is maximized when applying the rebar line processing assembly method.

4) Significant shortening of construction period can reduce construction cost and financial cost.

Claims (6)

In the construction method of building concrete / steel structure of high-rise concrete building, When constructing concrete / steel structures, it is possible to build a layered concrete / steel structure by installing formwork, reinforcing steel bars, concrete placing and curing by skipping one or two floors, but the layered concrete / steel structure for the upper layer sequentially A method of construction using layered construction, characterized in that the formwork, reinforcing steel assembly, concrete placing and curing work of the formwork for the skipped floor structure, and the formwork, reinforcing steel, concrete placing and curing work in parallel. The method according to claim 1, wherein the formwork, reinforcing steel assembly, concrete placing and curing work for the skipped floor structure is carried out after at least two-stage layered concrete / steel structure construction. The method according to claim 1, wherein when the construction of the concrete / steel structure skips two floors, the formwork of the layered concrete / steel structure for the upper layer sequentially made, the reinforcing steel assembly, concrete casting and curing work and skip floor floor structure of the lower two floors Building construction method using a layered construction, characterized in that the formwork, reinforcing bars, concrete placing and curing work together. The method of claim 1, wherein the floor structure and the skip layer floor structure of the layered concrete / steel structure is constructed using a general formwork, deck plate, or reinforced integral deck plate Used construction method. The formwork according to any one of claims 1 to 3, wherein the formwork for the construction of the floor structure and the skip layer floor structure of the stratified concrete / steel structure is supported by the copper bar in the pre-installed lower layer, or in the upper layer of the pre-installed form. Hanging method for supporting medallions, or the installation method using a layered construction, characterized in that the bracket is installed on the column structure of the pre-concrete concrete / steel structure and installed by placing the formwork on it. The method according to any one of claims 1 to 3, wherein the column structure of the layered concrete / steel structure is applicable to any one of a CFT column, a CFCT column, and a hollow PC column.

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