KR102304565B1 - Hollow precast concrete slab construction method using side connection member - Google Patents

Abstract

A number of EPS unit blocks (Expanded Polystyrene Unit Block) are formed inside, but they can be stably connected to each other using lateral connection means, so durability can be secured and perforated precast slab construction using lateral connection means advantageous for long spanning As a method, the perforated precast slab includes: a lateral connection space (S) formed continuously in the longitudinal direction on both sides so that the abdomen and the lower flange are integrally manufactured; And formed to be exposed to the side connection space (S), the bent connection plate formed to be horizontally embedded in both ends of the lower flange, and one side is bent upward from the bent connection plate to the upper surface of both ends of the lower flange, so that both side connection spaces (S) ), an exposure inclined flange formed to be exposed; and a lateral connection means including a; and the lateral connection means exposed in the lateral connection space (S) are manufactured to be integrated with each other in the transverse direction.

Description

Perforated precast slab construction method using side connection means {HOLLOW PRECAST CONCRETE SLAB CONSTRUCTION METHOD USING SIDE CONNECTION MEMBER}

The present invention relates to a perforated precast slab construction method using a side connecting means, and more specifically, a plurality of EPS unit blocks (Expanded Polystyrene Unit Block) are formed inside, but a stable connection to each other using the side connecting means is It is possible to secure durability and relates to a perforated precast slab construction method using a lateral connection means advantageous for long spanning.

In order to increase the thickness of the slab to increase the thickness of the conventional building or to secure a large living space, various methods have been put into practical use to make it hollow by installing a buried object inside the slab to reduce weight or improve sound insulation performance.

For example, a hollow core slab (HCS) used as one of the structural members of a building is made of precast concrete. Here, precast concrete (PC) refers to a concrete member cast in a factory.

1A is a view showing such a conventional hollow slab.

As shown in FIG. 1A, the hollow slab 10 is manufactured by reinforcing reinforcing bars such as a stranded wire on a production table, and pouring concrete using a hollow slab automatic molding machine in a state in which the strand is tense. do.

At this time, the width of the hollow slab 10 can be manufactured in a range of typically 0.9 to 1.2 m, but the size and extension length thereof have recently increased.

That is, if the width of the hollow slab 10 is manufactured to be narrow and supported on the girder in the field, the number of lifting increases, and the narrow width has a limit in productivity. That is, the need for a hollow slab having a long span cross-section is increasing recently.

In addition, the hollow slab 10 does not have a binding means having integrity with the topping concrete when pouring topping concrete after adjusting the height of the bottom plate or uniformly distributing the load. The problem is that it cannot be done.

This hollow slab 10 secures lightness (reducing its own weight) and removes structurally unnecessary concrete cross-sections to form a hollow (hollow)-shaped member cross-section by introducing an automated device, or by introducing expanded polystyrene (EPS), etc. Although PC member manufacturers are using it in various ways, such as purchasing insulation from

1B is a cross-sectional view for explaining the HCS method, the RPS method, and the TVS method for manufacturing a hollow slab.

The HCS (Hollow Core Slab) method, as shown in FIG. 1b, is a method of securing structural integrity by reinforcing upper reinforcing bars in a hollow slab and pouring topping concrete. Underground parking lot, distribution warehouse, sales facility, office applies to

However, although this HCS method can be mass-produced, there is a problem in that it requires a huge cost for the introduction of equipment, etc., and there is a limit in the height of the cross-section that can be manufactured.

In addition, the RPS (Rib Plus Slab) method, as shown in FIG. 1b, is a construction method that secures structural integrity by reinforcing upper reinforcing bars in a hollow slab produced by purchasing an EPS block and pouring topping concrete. , sales facilities, etc.

However, this RPS method relies on manual work rather than mass production, and the cost rises due to EPS purchase in the hollow part, and double work processes occur due to overlaid concrete pouring. There is a problem that it is difficult to configure.

In addition, the TVS (Two way Void Slab) method, as shown in FIG. 1b, is a method that shows economical and efficient structural performance by reinforcing reinforcing bars in the longitudinal and transverse directions and introducing weight reduction in the weightless plate. It is a construction method similar to slab, and is applied to underground parking lots and offices.

However, this TVS method is a conventional cast-in-place method, not a PC method, and has the advantage of being able to configure a two-way slab, but has a disadvantage in that the work speed is slow. There is this.

However, in such a hollow slab, it is very difficult and inconvenient to perform piping work such as conduit pipes or equipment pipes, which are essential in the construction of a building. there was

In particular, in the case of an apartment building, since many conduits must be arranged, when a separate space for conduit piping is provided, the hollow ratio often decreases, as well as lattice muscles for lightweight objects such as EPS blocks, When reinforcing reinforcing bars in the upper and lower parts of the light body to prevent buoyancy of the light body, there is a problem that the work is difficult because a conduit, etc. must be placed between the upper and lower reinforcing bars or lattice reinforcing bars after the reinforcing bars are reinforced.

As an alternative to the conventional hollow slab, a waffle-type slab capable of transmitting loads in two directions has been proposed. Such a waffle-type slab has the characteristic that the height of the floor does not increase and weight reduction can be expected without increasing its own weight. However, since the waffle-type formwork is difficult to install, dismantle, and reuse, it is being used limitedly due to the increase in temporary construction cost.

However, since the hollow slab manufactured by the conventional precast method is manufactured using EPS blocks, the lateral structure is weak, and there is a need to reinforce it.

Republic of Korea Patent No. 10-1228642 (published on December 17, 2012), title of invention: “Hollow slab with edge step joint to improve unity” Republic of Korea Patent No. 10-1285487 (published on December 17, 2012), title of invention: “Hollow slab and its construction method for improving non-modular responsiveness and horizontal shear performance” Republic of Korea Patent No. 10-10-1285468 (published on December 17, 2012), title of invention: “Hollow slab for improving unity with overlaid concrete” Republic of Korea Patent Publication No. 10-2003-61254 (published date: July 18, 2003), title of invention: "Miniwaffle plate slab and method thereof"

The technical problem to be achieved by the present invention for solving the above-mentioned problems is to produce a perforated precast slab using an EPS block, so that a perforated precast slab using a side connecting means that can be molded to form a hollow space inside It is a technical problem to be solved by providing a construction method.

Another technical problem to be achieved by the present invention is to more effectively connect the perforated precast slab in the lateral direction (lateral) to solve the provision of a perforated precast slab construction method using a lateral connection means that is advantageous for long span construction by integrated behavior as a technical task.

As a means for achieving the above-mentioned technical problem, the perforated precast slab construction method using the lateral connection means of the present invention is (a) so that the abdomen and the lower flange are integrally manufactured, connection space (S); And formed to be exposed to the side connection space (S), the bent connection plate formed to be horizontally embedded in both ends of the lower flange, and one side is bent upward from the bent connection plate to the upper surface of both ends of the lower flange, so that both side connection spaces (S) ) Exposed inclined flange formed to be exposed to; side connection means including; manufacturing a perforated precast slab comprising; (b) installing the perforated precast slab to be mounted between the beam and the beam in the connection structure of the column and beam; and (c) the bent connecting plate is exposed to the side connection space (S) of each perforated precast slab by the perforated precast slabs arranged adjacently, and both swash plates of the V-shaped connecting plate are in close contact with the bent connecting plate. Including; the step of connecting the perforated precast slabs to each other using the side connection space (S) by connecting them in a closed state, wherein the bent connection plate of step (a) is a plate material and extends in the direction of the side connection space (S) The lateral connection space ( S) is formed continuously or spaced apart along the extending direction, so that the V-shaped connecting plate in step (c) is also continuous in the longitudinal direction when the exposed inclined flange is continuously formed along the extending direction of the lateral connecting space (S). Or, when the extension direction of the side connection space (S) is spaced apart from each other, the load transmitted to the exposed inclined flange is distributed to the lower flange by using the one formed in a size corresponding to the exposed inclined flange. The connecting plate is made to support the side of the V-shaped connecting plate of the side connecting means.

According to the present invention, it is possible to provide a method for constructing a perforated precast slab using a lateral connection means that is advantageous for integration behavior by means of a lateral connection means that is formed by embedding and manufacturing an EPS block to have a cross-sectional structure that is slim and advantageous for a long span. .

In addition, according to the present invention, it is possible to provide a perforated precast slab construction method using a lateral connecting means that can be used as a two-way slab as the lateral connecting means is integrated with the transverse lattice reinforcing bars.

According to the present invention, the hollow precast slab is very excellent in mobility and field applicability to the extent that it can be applied regardless of the place of manufacture, so it is suitable not only for general construction sites, but also for sites with limited transportation and large-scale sites where on-site production is essential. can be easily applied.

In addition, according to the present invention, it is very advantageous in terms of productivity, manufacturing cost, and assembly time compared to steel molds in the PC slab market.

1a and 1b are cross-sectional views for explaining the conventional HCS method, RPS method, and TVS method for manufacturing a hollow slab;
Figure 2 is a flow chart of the perforated precast slab construction method using the lateral connection means of the present invention;
3a, 3b and 3c are a perspective view of the perforated precast slab of the present invention and a layout view of the EPS block
4a, 4b, 4c and 4d are perspective views of the side connection means and the perforated precast slab of the present invention;
5a and 5b is a perspective view of the lattice reinforcing bar of the present invention is integrated with the lateral connection means and the perforated precast slab;
6a and 6b show a connection configuration diagram of the lateral connection means of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

Figure 2 shows a flow chart of the perforated precast slab 100 construction method using the lateral connection means of the present invention.

The perforated precast slab 100 is formed to include an upper flange, an abdomen 120, a lower flange 130, an EPS block 140, and a transverse lattice reinforcing bar 240 integrally with the transverse reinforcing bars 141 and 142. , both side connection spaces (S) are formed, and the exposed inclined flange 220 of the side connection means 200 is exposed to the side connection means (S), and the inner partition wall portion is used.

Accordingly, as shown in FIG. 2 , the perforated precast slab 100 is manufactured in advance in a factory, etc. (S110).

That is, so that the abdomen 120 and the lower flange 130 are integrally manufactured, the lateral connection space (S) formed continuously in the longitudinal direction on both sides; And formed to be exposed to the side connection space (S), the lower flange 130, the bent connecting plate 210 formed to be horizontally embedded in both ends, and one side from the bent connecting plate 210 to the upper surface of both ends of the lower flange A perforated precast slab 100 including; side connecting means 200 including; exposed inclined flange 220 formed to be bent upward and exposed to both side connection spaces S is manufactured.

Hereinafter, the perforated precast slab 100 will be described in detail.

3a, 3b and 3c show a perspective view of the perforated precast slab 100 and a layout view of the EPS block 140. As shown in FIG.

The perforated precast slab 100 is formed in such a way that the EPS block 140 is embedded therein in the longitudinal direction, and the lateral connection spaces S are formed on both sides in the form of a horizontal plate to have a constant extension length. .

The perforated precast slab 100 of the present invention is configured to include an upper flange or abdomen 120 including an upper flange, a lower flange 130 and an EPS block 140, as shown in FIG. 3A, and the EPS block 140 ), it can be seen that the self-weight can be minimized by occupying most of the cross-sectional area inside the abdomen 120 .

Accordingly, the upper flange may be formed as a separate horizontal plate flange at the upper end of the abdomen so that the lateral connection spaces (S) can be naturally formed on both sides of the perforated precast slab 100 together with the abdomen, as shown in FIG. 3a. , As shown in Figure 3b, it may be formed to extend to the upper end of the abdomen.

The abdomen 120 is a vertical plate member on the lower flange 130 , and the EPS block 140 extends in the longitudinal direction.

It is possible to exclude the amount of concrete pouring as much as the volume occupied by the EPS block 140, thereby reducing the weight of the perforated precast slab 100 to a minimum.

The lower flange 130 is a horizontal plate member integrally formed on the lower surface of the abdomen, and a lateral connection space (S) is formed on both sides of the upper flange or the abdomen 120 including the upper flange and the lower flange 130. can be known

Perforated precast slab 100 by allowing the lateral connection means 200 of the present invention to be exposed through this lateral connection space S and integrating the lateral connection means 200 exposed in the lateral connection space S in the transverse direction with each other to enable the unified behavior of

The EPS block 140 is a structural EPS block, which is formed by first setting the EPS block 140 inside the slab formwork (not shown), and then constructing it by pouring concrete, using a buried method.

As shown in FIGS. 3B and 3C , it is not bothered to form one or more pieces, and it can be seen that it can be formed in various ways such as a circular cross-section, a rhombic cross-section, and a trapezoidal cross-section.

Accordingly, also in the longitudinal direction, as shown in FIG. 3b , the EPS blocks 140 are separated from each other to secure a space S2 in which the transverse lattice reinforcing bars 240 to be described later can be reinforced.

Furthermore, according to Fig. 3a in the transverse direction, it can be seen that the perforated precast slab 100 can be expanded in the transverse direction when the two EPS blocks 140 are formed adjacent to each other in the transverse direction and spaced apart from each other. .

As such, when the EPS unit block 141 is disposed in the longitudinal direction, it can be seen that the internal partition wall part can be formed by the EPS block 140 inside the perforated precast slab 100 by concrete pouring, and this internal partition wall part It is possible to reinforce the lateral connecting means 200, the lattice reinforcing bars 240, and the lateral reinforcing bars 141 and 142 in the located portion.

In addition, as shown in FIG. 3c , the size of the concrete cross-section at the end of the perforated precast slab 100 or the size of the concrete cross-section in the central part can be adjusted in consideration of bending and shear when designing the perforated precast slab 100 .

That is, as shown in FIG. 3c , after the EPS unit block 141 is made into a longitudinal cross-section, the cross-sectional size of the member can be adjusted in the member longitudinal direction by pouring concrete. It is possible to implement a cross-section that can respond to .

For example, after installation of the perforated precast slab 100, when the shear force increases from the center toward both ends, the EPS unit block 141 also has to increase in cross section toward both ends. Accordingly, the EPS unit block 141 It can be seen that the shape of , which is processed into a shape according to the shear force action, is used.

In addition, the bending moment may become smaller toward the center than at both ends, and in response to this, the shape of the EPS unit block 141 is processed into a shape (lateral cross-section) according to the action of the bending moment so that it can be resisted with the cross section of the inner partition wall. You can see that it is being used.

Figures 4a, 4b, 4c and 4d show a perspective view of the configuration of the lateral connection means 200 and the perforated precast slab 100 of the present invention, Figures 6a and 6b are the lateral connection means of the present invention ( 200) shows the connection configuration diagram.

That is, it can be seen that the side connection means 200 is partially exposed to both side connection spaces S of the perforated precast slab 100 with reference to FIGS. 4B and 4D .

Accordingly, it can be seen that the lateral connecting means 200 is composed of a bent connecting plate 210, an exposed inclined flange 220 and a V-shaped connecting plate 230, as shown in FIGS. 4a, 4b, 4c and 4d. have.

The bent connecting plate 210 is horizontally embedded in both sides (transverse direction) of the lower flange 130 of the perforated precast slab 100 as shown in FIGS. 4A, 4B, 4C and 4D, but the lower flange It can be seen that one side is bent upward to the upper surfaces of both ends, so that the exposed inclined flange 220 is horizontally bent so as to be exposed to both side connection spaces (S).

Accordingly, the load transmitted to the exposed inclined flange 220 is distributed to the lower flange 130 so as to support the side of the V-shaped connecting plate 230 of the lateral connecting means 200 of the perforated precast slab 100 . do.

In addition, since the bent connecting plate 210 also serves as a reinforcing plate of the lower flange 130, as shown in FIGS. 4A, 4B, 4C and 4D, damage to the lower flange 130 due to an impact load, etc. It also serves to prevent

Such a bent connection plate 210 may be formed continuously along the extension direction of the lateral connection space S, as shown in FIGS. 4A and 4B, and as shown in FIGS. 4C and 4D, the extension direction of the lateral connection space S. It can be seen that they may be formed by being spaced apart from each other.

Accordingly, the exposed inclined flange 220 is formed continuously or spaced apart along the extension direction of the lateral connection space S, as shown in FIGS. 4A, 4B, 4C and 4D, and the bent connecting plate 210 in the form of an inclined plate. It can be seen that it is integrally formed at the end of the

As a result, it can be seen that the exposed inclined flange 220 is formed on the upper surface of the side end of the lower flange 130 so as to be exposed to the side connection space (S).

At this time, in the case of the bent connection plate 210 and FIGS. 4A and 4B, the exposed inclined flange 220 can be formed integrally by bending using a plate material, but as shown in FIGS. 4C and 4D, each is used with a fastener such as a bolt. can also be formed. That is, in the case of FIGS. 4c and 4d, when the bent connecting plate 210 uses a bar member such as a reinforcing bar, referring to FIG. 6b , it can be seen that a bolt fastening method can be used in integrating with the exposed inclined flange 220. .

In addition, the V-shaped connecting plate 230 is exposed to the combined lateral connection space (S) of each perforated precast slab 100 according to the perforated precast slab 100 disposed adjacent to each other, as shown in FIGS. 6A and 6B . The exposed inclined flange 220 is connected by welding or fastening in a state in which both inclined plates of the V-shaped connecting plate 230 are in close contact, so that the side in the side connection space S of the perforated precast slab 100 It can be seen that the connection (lateral connection) can be easily solved.

Accordingly, by pouring the exposed inclined flange 220 and the V-shaped connecting plate 230 to be buried using the topping concrete (C), it is possible to laterally connect the adjacent perforated precast slab 100 .

At this time, when the exposed inclined flange 220 is continuously formed in the longitudinal direction as shown in FIGS. 4A and 4B, the V-shaped connecting plate 230 may be formed continuously in the longitudinal direction, but as shown in FIGS. 4C and 4D. , it can be seen that in the case of being spaced apart from each other, it can be seen that one formed in a size corresponding to the exposure inclined flange 220 can be used. The size may be adjusted to facilitate welding.

Figures 5a and 5b shows a perspective view of the configuration of the lateral connection means 200 and the perforated precast slab 100 provided with the transverse lattice reinforcing bar 240 of the present invention, Figures 6a and 6b are of the present invention It shows a connection configuration diagram of the lateral connection means (200).

The topping concrete (C) may be poured to be filled in the lateral connection space (S) and also poured with a certain thickness on the upper flange or upper surface of the abdomen of the adjacent perforated precast slab 100 .

Accordingly, the longitudinal and transverse directions of the perforated precast slab 100, that is, the reinforcement in two directions, by connecting the bent connecting plates 210 while securing the composite performance of the topping concrete (C) and the perforated precast slab 100 also made it possible.

To this end, the present invention uses a transverse lattice reinforcing bar 240, arranged to extend in the transverse direction on the bent connecting plate 210 or the exposed inclined flange 220, and formed so that the upper end of the wavy upper part protrudes from the upper flange or upper surface of the abdomen will make it

Accordingly, the lateral connection means 200 is also arranged so that a portion is exposed in both lateral connection spaces (S) of the perforated precast slab 100 is the same.

Referring to FIG. 3b , these transverse lattice reinforcing bars 240 are arranged using the space S2 between the EPS blocks 140 spaced apart from each other in the longitudinal direction, so at least one in the perforated precast slab 100 . It can be arranged, and it can be seen that it can be installed together by further including the lateral reinforcing bars 141 and 142.

When the transverse reinforcing bars 141 and 142 are used, the transverse lattice reinforcing bars 240 can be reinforced, which is advantageous for bending rigidity and shearing force resistance in the transverse direction, which is very advantageous in making long spans.

Accordingly, the lateral connecting means 200 is composed of a bent connecting plate 210, an exposed inclined flange 220, a V-shaped connecting plate 230 and a transverse lattice reinforcing bar 240, as shown in FIGS. 5a and 5b. Able to know.

The bent connecting plate 210 is horizontally embedded in both ends of the lower flange 130 of the perforated precast slab 100, as shown in FIGS. 5A and 5B, and one side is bent upward to the upper surface of both ends of the lower flange and exposed It is the same that the inclined flange 220 is formed to be horizontally bent so as to be exposed to both side connection spaces (S).

Accordingly, the load transmitted to the exposed inclined flange 220 is distributed to the lower flange 130 so as to support the side of the V-shaped connecting plate 230 of the lateral connecting means 200 of the perforated precast slab 100 . do.

In addition, since the bent connecting plate 210 also serves as a reinforcing plate of the lower flange 130, as shown in FIGS. 5A and 5B, it also serves to prevent damage to the lower flange 130 due to an impact load. is also the same

Although it is shown that these bent connection plates 210 are continuously formed along the extension direction of the lateral connection space S in FIGS. 5A and 5B, it is also possible to continuously form them along the extension direction of the lateral connection space S. there is no

Accordingly, as shown in FIGS. 5A and 5B, the exposed inclined flange 220 is formed by being spaced apart along the extension direction of the lateral connection space (S) (it can also be continuous), It can be seen that it is the same as being integrally formed at the end.

It can be seen that the exposed inclined flange 220 is formed on the upper surface of the side end end of the lower flange 130 so as to be exposed to the side connection space (S).

In addition, the V-shaped connecting plate 230 is, referring to FIGS. 6A and 6B , according to the perforated precast slabs 100 arranged adjacent to each other, the combined lateral connection space (S) of each perforated precast slab 100 . The bent connecting plate 210 exposed to the perforated precast slab 100 by connecting the bent connecting plate 210 by welding or fastening in a state in which both swash plates of the V-shaped connecting plate 230 are in close contact with each other. It is possible to simply solve the lateral connection (lateral connection) in the lateral connection space (S) of the

Accordingly, by pouring the bent connecting plate 210 and the V-shaped connecting plate 230 to be buried using the topping concrete (C), the final adjacent perforated precast slab 100 can be laterally connected is the same.

The transverse lattice reinforcing bar 240 is a reinforcing bar formed in a vertical wave form in the transverse direction, as shown in FIGS. 5A and 5B, and both ends are, for example, welded or fastened to the bent connecting plate 210 or the exposed inclined flange 220. It can be seen that it is integrated in the method of

For this transverse lattice reinforcing bar 240 arrangement, the EPS block 140 is also separated from each other in the longitudinal direction so as to secure a space S2 for reinforcing the transverse lattice reinforcing bar 240 to be described later. .

In addition, the upper part of the waveform of the transverse lattice reinforcing bar is arranged to be partially exposed from the upper flange or upper surface of the abdomen of the perforated precast slab 100, and serves to synthesize the topping concrete (C) and the perforated precast slab 100 with each other, It also serves as a transverse reinforcement of the perforated precast slab 100 together with the transverse reinforcing bars 141 and 142, and it can be seen that a plurality of them are formed in the longitudinal direction.

Next, as shown in FIG. 2, the perforated precast slab 100 is installed to be mounted between the beams in the connection structure of the pillars and the beams in the distribution warehouse, etc. (S120).

Next, as shown in FIG. 2 , the V-shaped connecting plate 230 as described above is installed on the exposed inclined flange 220 of the perforated precast slab 100 to connect them laterally (S130).

That is, according to the perforated precast slabs 100 arranged adjacent to each other, the exposed bent connecting plates 210 of each perforated precast slab 100 are in close contact with both swash plates of the V-shaped connecting plate 230 in a state in which they are in close contact. By connecting the bent connecting plate 210 by welding or fastening, the lateral connection in the lateral connection space S of the perforated precast slab 100 is possible.

Next, as shown in Figure 2, the topping concrete (C) is poured into the side connection space (S) and the perforated precast slab 100 to a certain thickness on the upper surface to be synthesized (S140).

That is, the upper part of the corrugated portion of the transverse lattice reinforcing bar 240 is arranged to be partially exposed from the upper flange of the perforated precast slab 100 or the upper surface of the abdomen, and the topping concrete (C) and the perforated precast slab 100 are synthesized with each other. It serves as a lateral reinforcing material of the perforated precast slab 100 while also serving as a reinforcing material.

As a result, the perforated precast slab 100 of the present invention reduces its own weight by using the EPS block 140 to enable long-span construction, longitudinal and transverse reinforcement is also possible, and the lateral connection means 200 By using it, effective structure construction becomes possible.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: perforated precast slab
120: abdomen 130: lower flange
140: EPS block 141: EPS unit block
150: transverse lattice reinforcement 200: lateral connection means
210: bent connection plate 220: exposed inclined flange
230: V-shaped connecting plate 240: transverse lattice reinforcing bar
S: Lateral connection space S2: Space for lattice reinforcing bars

Claims (7)

(a) so that the abdomen 120 and the lower flange 130 are integrally manufactured, the lateral connection space (S) formed continuously in the longitudinal direction on both sides; And as formed to be exposed to the side connection space (S), the lower flange 130, the bent connecting plate 210 formed to be horizontally embedded in both ends, and one side from the bent connecting plate 210 to the upper surface of both ends of the lower flange manufacturing a perforated precast slab 100 including; side connecting means 200 including; exposed inclined flanges 220 bent upward and formed to be exposed to both side connection spaces (S);
(b) installing the perforated precast slab 100 to be mounted between the beams in the connection structure of the columns and beams; and
(c) the bent connecting plate 210 is exposed to the side connection space S of each perforated precast slab 100 by the perforated precast slab 100 arranged adjacently, and a V-shaped connecting plate 230 Connecting the perforated precast slab 100 to each other laterally using the lateral connection space (S) by connecting both swash plates in a state in close contact with the bending connection plate 210;
The bent connecting plate 210 of step (a) is formed continuously along the extension direction of the lateral connection space S as a plate, or as a fastener including a bolt, the extension direction of the lateral connection space S is mutually Spaced apart so that the exposed inclined flange 220 integrally formed at the end of the bent connecting plate 210 in the form of a swash plate is formed continuously or spaced apart along the extension direction of the lateral connection space (S), the step (c) In the case of the V-shaped connecting plate 230 of the exposure sloping flange 220 is formed continuously along the extension direction of the lateral connection space (S), the one formed continuously in the longitudinal direction together is used, or of the lateral connection space (S). When the extension direction is spaced apart from each other, the load transferred to the exposed inclined flange 220 is distributed to the lower flange 130 by using the one formed in a size corresponding to the exposed inclined flange 220 to distribute the bent connecting plate 210 . ) A perforated precast slab construction method using a lateral connecting means to support the side of the V-shaped connecting plate 230 of the lateral connecting means 200 . The method of claim 1,
After step (c),
A perforated precast slab construction method using a side connecting means further comprising the step of pouring the topping concrete (C) on the side connection space (S) and the upper surface of the perforated precast slab 100. delete The method of claim 1,
The abdomen 120 is a vertical plate member so that the EPS block 140 is formed to extend continuously or spaced apart in the longitudinal direction,
The lower flange 130 is a horizontal plate member integrally formed on the lower surface of the abdomen, so that the lateral connection space (S) is formed on both sides of the abdomen (120) and the lower flange (130), and the lateral connection space (S) The lateral connecting means 200 is exposed and the lateral connecting means 200 exposed in the lateral connecting space S are integrated with each other in the transverse direction to enable the integrated behavior of the perforated precast slab 100. A perforated precast slab construction method. 5. The method of claim 4,
The EPS block 140,
One or multiple EPS blocks 140 formed in the abdomen are separated from each other so as to secure a space S2 for reinforcing at least the lattice reinforcing bars 240 in the longitudinal direction. Perforated precast slab construction method using means. 6. The method of claim 5,
The transverse lattice reinforcing bar 240 is,
A reinforcing bar formed in a vertical wavy shape in the transverse direction, both ends of which can be integrated into the bent connecting plate 210 or the exposed inclined flange 220 by welding or fastening, and a lateral connection means to form a plurality in the longitudinal direction. A perforated precast slab construction method. 7. The method of claim 6,
The upper part of the wave form of the transverse lattice reinforcing bar is disposed so as to be partially exposed from the upper surface of the upper flange of the perforated precast slab 100, and serves to synthesize the topping concrete (C) and the perforated precast slab 100 with each other. A perforated precast slab construction method using a lateral connection means that also serves as a transverse reinforcement of the cast slab 100 .

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