KR20070009061A - Simultaneous working type installation method for stair hall equipped prefabricated stair using pc form - Google Patents

Abstract

A method of constructing simultaneous constructing-type prefabricated stairs by using PC forms is provided to speed up the constructing work and minimize the installation area of the mold without stair inner molds by using the stair wall half PC panel. A method of constructing simultaneous constructing-type prefabricated stairs by using PC forms comprises the steps of: installing a stair wall half PC panel(210) on the lower slab; installing a stair landing PC panel at the center of the stair wall half PC panel; mounting a support rod(350) for supporting the half PC panel; distributing reinforcing bars to the stair wall half PC panel and the stair inlet wall half PC panel; assembling an upper stair PC member between the stair landing PC panel and the half PC panel; installing a stair wall outer mold(230) and a stair inlet wall outer mold(240) and mounting an upper slab mold(100); pouring and hardening the unset concrete; and removing the upper slab mold, the stair wall outer mold, the stair inlet wall outer mold, and the support rod.

Description

Simultaneous Working Type Installation Method for Stair Hall Equipped Prefabricated Stair Using PC Form}

1 and 2 are for explaining a staircase construction method provided with a conventional prefabricated stairs,

1 is a perspective view showing a state in which the primary interior formwork for staircases and exterior formwork for staircases are installed;

2 is a perspective view showing a state in which the secondary formwork for staircases and the external formwork for the staircases are installed;

Figure 3 is a perspective view of a staircase room with a prefabricated stairs constructed by the prior art,

4A is a perspective view and a partially enlarged view of a half PC panel for a stair room wall and a half PC panel for a stair room entrance side wall used in the present invention;

Figure 4b is a perspective view of a full PC panel for the staircase room wall used in the present invention,

4C is a perspective view and a partially enlarged view of a partial half PC panel for a stepped upper slab used in the present invention;

Figure 4d is an exploded perspective view showing the PC panel for the stairwell and the partial half PC panel for the upper slab and the upper, lower stairs PC member used in the present invention,

5 is a cross-sectional view illustrating a method of connecting each panel or member in the present invention;

6 to 14 shows a first embodiment of the simultaneous construction type prefabricated stair construction method using the PC foam according to the present invention,

6 is a perspective view showing a step of installing a half PC panel for the staircase walls on the lower slab;

Figure 7 is a perspective view showing the step of installing the PC panel for stairway in the middle of the half PC panel for the stair room wall,

8 is a perspective view showing a step of assembling the lower staircase PC member between the lower slab and the stepped PC panel;

9 is a perspective view showing a step of installing a support for supporting a partial half PC panel for the upper part of the step slab, and installing a half PC panel for the wall of the stair room entrance side;

10 is a perspective view showing the step of reinforcing the reinforcing bar on the outside of the half PC panel for the stair room wall and the half PC panel for the stair room entrance side wall,

11 is a perspective view showing a step of supporting a part half PC panel for an upper step slab on a support and assembling an upper step PC member between a part PC panel for a step upper part and a partial half PC panel for an upper part slab;

12 is a perspective view showing the steps of installing the external formwork for the staircase wall and the external formwork for the staircase room entrance side wall and the formwork for the upper slab at regular intervals on the outside of the half PC panel for the staircase room wall and the half PC panel for the staircase room entrance side wall. ,

Fig. 13 shows between the upper slab formwork and the half PC panel for the stair room wall and the external formwork for the stair room wall, between the half PC panel for the stair room entrance side wall and the external formwork for the stair room entrance side wall, and on the partial half PC panel for the upper part slab. Perspective view showing steps of pouring uncured concrete into

14 is a perspective view showing the steps of demolding the formwork for the upper slab, the external formwork for the stair room wall and the external formwork and support for the stair room entrance side wall;

15 is a cross-sectional plan view showing a second embodiment of the simultaneous construction type prefabricated stair construction method using the PC foam according to the present invention;

** Description of symbols for the main parts of the drawing **

100: formwork for upper slab

210: half PC panel for staircase walls 210A: full PC panel for staircase walls

220: half PC panel for stair room entrance side wall

220A: Full PC panel for wall at stairway entrance

230: External formwork for staircase walls

240: external formwork for the wall of the staircase room entrance

310: PC panel for stairs

320: Partial half PC panel for slab upper slab

330,340: Upper and lower stairs PC member 350: Support

The present invention is a simultaneous construction type prefabricated staircase construction using the PC form that can be installed more efficiently to the staircase installed inside the prefabricated stairs using the Precast Concrete Form (hereinafter referred to as "PC form") It is about a method.

When the multi-storey building is newly constructed, a staircase room with a staircase will be constructed to walk up and down the upper and lower floors.

In the conventional construction method, the upper slab formwork is installed on the lower slab, the upper and lower stepping formwork, the stepping formwork, the interior and exterior formwork for the staircase, and the curing of the upper layer slab by placing uncured concrete in the formwork. In addition, the staircase with staircases is being constructed by site casting.

However, in the conventional construction method, since the entire staircase and the staircase are constructed by the concrete pouring method using formwork, work conditions are very troublesome, and construction efficiency and construction quality are greatly reduced.

Therefore, conventionally, in order to solve the problems of the conventional construction method, a staircase construction method including prefabricated stairs as shown in FIGS. 1 to 3 is used.

In the conventional staircase construction method provided with a prefabricated staircase, as shown in FIGS. 1 and 2, the first internal formwork 3a for the staircase is installed on the prefabricated lower slab S1, and the reinforcing bars 6 ), And then the stepped PC panel 5a, stepped upper slab PC panel 5b, and upper and lower stepped PC members 5c and 5d inside the primary interior formwork 3 for the staircase room. Install the prefabricated stairs (5) comprising a, install the secondary interior formwork (3b) for the staircase leading to the upper part of the primary interior formwork (3a) for the staircase, the outer formwork (2) for the staircase and the upper slab After installing the formwork (1), the reinforcing bar (not shown) is placed on the formwork (1) for the upper slab, the formwork for the upper slab (1), the outer formwork (2) for the staircase room, and the first and second interior formwork for the staircase room. After pouring unhardened concrete between (3a, 3b), each die (1) (2) (3a, 3b) is demolded. Prefabricated type consisting of PC member 5a for stairwell, PC member 5b for stair upper slab, and PC members 5c and 5d for upper and lower staircases in the staircase room wall 4a cast together with the upper slab S2. It is made in the order to complete the staircase chamber 4 provided with the stairs (5).

According to the conventional staircase construction method provided with a prefabricated staircase in the staircase room wall (4a) formed together with the upper floor slab (S2) by the site concrete pouring step PC panel (5a) and PC panels (5b) for stair upper slab and Since the staircase chamber 4 provided with the prefabricated stairs 5 by the upper and lower stairs PC members 5c and 5d has an advantage of improving working conditions and improving overall construction efficiency and construction quality.

However, the conventional staircase construction method with a prefabricated staircase is a PC panel 5a for stairwells and a PC panel 5b for stair upper slabs and upper and lower staircases with the primary interior formwork 3a for staircases installed. Since the PC members 5c and 5d are provided, the space for installing these PC panels 5a and 5b and the PC members 5c and 5d is not sufficiently secured. 5a, 5b) and the PC member (5c, 5d) cause interference, there is a problem that their installation is difficult.

In addition, the upper end of the staircase primary inner formwork 3 should be manufactured to be inclined according to the lower shape of the upper and lower stairwell PC members 5c and 5d, as well as the staircase primary and secondary inner formwork 3a and 3b. Since the lower ends of the upper and lower staircase PC members 5c and 5d must be manufactured in the form of steps having a shape in order to manufacture and install the primary and secondary internal formwork 3a and 3b for these staircases. It takes time to delay the construction time of the entire staircase room, and there is a problem that the overall construction efficiency is lowered.

Therefore, an object of the present invention is to exclude the installation of the staircase interior formwork for the part where the stairwell PC member and the upper and lower stairs PC member is installed in the process of constructing the staircase with the prefabricated staircase therein, instead of the staircase wall The installation of external formwork for the staircase, reinforcement work and installation of PC members for the upper and lower staircases by installing the half PC panels for the staircase can be performed at the same time. It is to provide a simultaneous construction type prefabricated stair construction method using foam.

Another object of the present invention to minimize the installation range of the external formwork for the staircase to minimize the amount of concrete in the field, to provide a simultaneous construction type prefabricated staircase construction method using the PC foam further improved construction efficiency.

The present invention provides a method for prefabricating a staircase chamber consisting of a staircase chamber wall and the landing and the upper and lower stairs in order to achieve the above object, comprising: installing a half PC panel for the staircase wall on the lower floor slab; Installing a PC panel for landing in the middle of the half PC panel for the stair room wall; Assembling a lower staircase PC panel between the lower slab and a stepped PC panel; Installing a half PC panel for the stair room entrance side walls on the lower slab; Installing a support for supporting the partial half PC panel for the upper step slab on the lower slab; Reinforcing the reinforcing bars on the outside of the half PC panel for the stair room wall and the half PC panel for the stair room entrance side wall; Supporting a part half PC panel for the upper part slab on the support, and assembling an upper step PC member between the part PC panel for the step upper part and the partial half PC panel for the upper part slab; Installing the external formwork for the staircase wall and the external formwork for the staircase room entrance side wall at regular intervals on the outside of the half PC panel for the staircase room wall and the half PC panel for the staircase room entrance side wall, and installing the upper slab formwork; Casting uncured concrete between the upper slab formwork and the half PC panel for the staircase room wall and the half PC panel for the staircase room entrance side wall and the external formwork for the staircase room wall and on the partial half PC panel for the upper part slab; Demolding the upper slab formwork, the staircase wall external formwork and the staircase room entrance side wall formwork and the support; demonstrating a simultaneous construction type prefabricated staircase construction method using a PC form.

In another aspect, the present invention provides a method for prefabricating a staircase chamber consisting of a staircase wall and landing and upper and lower stairs in order to achieve the above object, comprising the steps of: installing a full PC panel for the staircase wall on the lower floor slab; Installing a PC panel for stairway at the middle of the full PC panel for the staircase wall; Assembling a lower staircase PC panel between the lower slab and a stepped PC panel; Installing a full PC panel for the stair room entrance side walls on the lower slab; Installing a support for supporting the partial half PC panel for the upper step slab on the lower slab; Supporting a part half PC panel for the upper part slab on the support, and assembling an upper step PC member between the part PC panel for the step upper part and the partial half PC panel for the upper part slab; It provides a simultaneous construction type prefabricated staircase construction method using a PC form consisting of the step of removing the support.

Hereinafter, the simultaneous construction type prefabricated stair construction method using the PC foam according to the present invention will be described according to the embodiment shown in the accompanying drawings.

4 to 14 show a first embodiment of the simultaneous construction type prefabricated stair construction method using the PC foam according to the present invention.

<Factory preparation stage>

As shown in FIG. 4, the half PC panel 210 and the prefabricated stair member 300 for the staircase walls are manufactured at the factory and transported to the site.

The half PC panel 210 for the staircase wall corresponds to the wall 21 of the staircase 20 except for the stairway entrance E1, and reinforcing rod truss 42 are embedded in the concrete panel 41. And part of which is exposed is used.

The reinforcing truss 42 is connected to the latch material 45 and the upper main reinforcing bar 43 connecting the upper and lower main reinforcing bars 43 and 44 and the upper and lower main reinforcing bars 43 and 44 by welding. The upper end is composed of a reinforcing latch member 46 welded.

A part of the upper main reinforcing bar 43 and the latch members 45 and 46, and about half of the height thereof, are manufactured in a state in which the concrete panel 41 is exposed.

The prefabricated staircase member 300 includes a PC panel 310 for joining the stairs, a partial half PC panel 320 for the upper slab, and upper and lower PC members 330 and 340 for the stairs.

The PC panel 310 for stepping and the PC members 330 and 340 for upper and lower staircases use a conventional PC panel and a PC member.

The stepped PC panel 310 is formed with a latching jaw 311 that the upper end of the lower step PC member 340 is formed.

The part upper half slab panel 320 for the upper step slab is formed of a half PC panel part 321 on the upper slab S2 side, and a step PC side is formed of a full PC panel part 322. 322 is formed with a locking step 323 that the upper end of the upper staircase PC member 320 is covered.

As for the half PC panel 341, the reinforced truss 42 is embedded in the concrete panel 41 and partially exposed, similar to the half PC panel 310 for the staircase wall described above.

<Example of how to connect each panel or member>

In the case of connecting the half PC panel 210 for the staircase wall, the PC panel 310 for the stairwell, the partial half PC panel 320 for the upper slab, and the upper and lower PC members 330 and 340 for the upper stairs. Can be used selectively.

As an example, as shown in Fig. 5A, an insert 51 is embedded in a half PC panel for a staircase room wall or a full PC panel for a staircase room wall, and a connection hardware 52 is embedded in the PC panel for a staircase room. The screw rod 53 is fastened to the insert 51 to protrude, and the protrusion of the screw rod 53 is welded with the connecting hardware 52, and as shown in FIG. The iron piece 61 is embedded so that the surface is exposed at the edge of the lower stairwell PC panel and the stairwell PC panel or the upper half slab partial half PC panel, and the connecting iron pieces 62 on both side iron pieces 61 of adjacent panels. And a nut member 71 are embedded in the half PC panel for the stair room wall or the half PC panel for the stair room entrance side wall, as shown in FIG. 5 (c). Padding 72 to fasten the bolt 73 passing through the connecting iron piece 72 to the nut member 71. There.

The insert 51 or the nut member 71 and the connecting hardware 52 and the iron piece 61 are buried in advance in the process of manufacturing the panel or member at the factory.

<Site construction>

The half PC panel 210 for the staircase walls carried to the site is installed on the lower slab S1, as shown in FIG.

The half PC panel 210 for the staircase walls is installed so that the surface of the reinforced truss 42 is partially exposed to the outside.

At this time, in connecting the half PC panel 210 for each staircase wall as shown in (c) of FIG. 5, a method using a nut member 71, the connecting iron piece 72 and the bolt 73 is used.

Next, the prefabricated stair member 300 is assembled into the interior of the half PC panel 210 for the staircase room wall.

In assembling the assembled stair member 300, first, as shown in Fig. 7, the PC panel 310 for step participation is provided in the middle of the half PC panel 210 for the staircase wall.

At this time, the screw rod 53 is fastened to the insert 51 embedded in the half PC panel 210 for the staircase wall so as to protrude, and the screw rod 53 is connected to the PC panel 310 for the stairwell. 52) and the screw rod 53 are connected by welding.

In the figure, 81 is a reinforcing steel bar embedded in the lower slab S1.

As shown in FIG. 8, the lower step PC panel 340 is assembled between the step half slab PC panel 320 and the step PC panel 310.

At this time, the upper end of the lower stairwell PC panel 340 is fastened to the engaging jaw 311 of the landing PC panel 310, the landing PC panel 310 and the lower stairwell PC panel 340 of FIG. As shown in b) it is connected by the method using the iron piece 61 and the connecting iron piece (62).

As shown in Fig. 9, a half PC panel for the stairway entrance side wall is provided, and a support 350 for supporting the partial half PC panel 320 for the upper part slab is provided.

At this time, the half panel 210 for the staircase room wall and the half PC panel 220 for the wall of the staircase room entrance have nut members 71, the connecting iron pieces 72, and the bolts 73 as shown in FIG. Connect in the way you use.

As shown in FIG. 10, the reinforcing bars 82 are arranged outside the half PC panel 210 for the staircase room wall and the half PC panel 220 for the stair room entrance side wall.

This reinforcing bar 82 is engaged with the reinforcing bar 81 protruding from the lower slab S1.

As shown in FIG. 11, the part half PC panel 320 for the upper step slab is supported on the support 350, and the step PC panel 310 for the step upper slab and the partial half PC panel 320 for the step upper slab are supported. Assembling the upper step PC member 330 in between.

At this time, the upper end of the upper staircase PC member 330 spans the locking step 323 of the partial half PC panel 320 for the upper step slab.

Here, the connection of the half PC panel 210 for the staircase wall and the PC panel 310 for the landing is performed using the insert 51, the connecting hardware 52, and the screw rod 53 as shown in FIG. 5 (a). Method, the connection of the lower stair PC panel 330 to the lower floor slab (S1) and the PC panel 310 for landing, the part PC panel 310 for landing and the partial half PC panel 320 for the upper floor slab. As for the connection method of the upper staircase PC panel 320, as shown in FIG. 5 (b) described above, a method using the iron piece 61 and the connecting iron piece 62 is used.

As shown in FIG. 12, the exterior formwork 230 and the staircase entry-side wall for the staircase room wall are spaced apart from the outside of the half PC panel 210 for the staircase room wall and the half PC panel 220 for the staircase entrance and exit wall. In addition to installing the external formwork 240 for the upper slab formwork 100 is installed.

On the upper slab formwork 100 is to reinforce the rebar, which is a general technique that can be understood even if not shown, so that the illustration is omitted to avoid the complexity of the drawings.

As shown in Fig. 13, between the upper slab formwork 100, the staircase room wall half PC panel 210 and the staircase room exterior formwork 230, the staircase room entry side wall half PC panel 220, Uncured concrete (C) is poured between the outer formwork 240 for the stair room entrance side wall and on the partial half PC panel 340 for the stair upper slab.

As shown in FIG. 14, the upper slab formwork 100, the outer formwork for the staircase room wall 230, the outer formwork 240 for the staircase room entrance side wall, and the support 350 are demolded to form the upper slab S1, A prefabricated staircase 30 including a staircase chamber wall 21 and a staircase room entrance side wall 22 of the staircase room 10, a landing 31, and upper and lower stairs 32 and 33, and an upper step slab 34 is completed. Be sure to

In the present embodiment, the half PC panel 210 for the stair room wall and the half PC panel 220 for the stair room entrance side wall are respectively the stair room wall 21 and the stair room entrance side wall 22 without using the interior formwork for the stair room. Forming the inner wall of the building, and also to form the interior formwork of the staircase, it is possible to greatly improve the overall construction efficiency by eliminating the installation of the formwork for the staircase and minimizing the amount of unhardened concrete pouring.

Fig. 15 shows a second embodiment of the simultaneous construction type prefabricated stair construction method using the PC foam according to the present invention.

In this embodiment, as shown in FIG. 15, the half PC panel 210 for the staircase wall in the first embodiment described above is a full PC panel 210A for the wall having a thickness corresponding to the thickness of the staircase wall 21. FIG. And replace the half PC panel 220 for the stair room entrance side wall and the external formwork 240 for the stair room entrance side wall with the full PC panel 220A for the stair room entrance side wall and the exterior formwork 230 for the stair room wall By eliminating the installation and concrete curing of the external formwork 240 for the stair room entrance side wall is to improve the construction efficiency even more.

In the present embodiment, the step of installing a full PC panel 210A for the staircase wall on the lower floor slab (S1) already constructed; Installing a step PC panel 310 at an intermediate portion of the full PC panel 210 A for the stair room wall; Assembling a lower step PC panel 340 between the lower slab S1 and the step PC panel 310; Installing a full PC panel (220A) for the stair room entrance side wall on the lower slab (S1); Installing a support (350) on the lower slab (S1) to support the partial half PC panel (320) for the stepped upper slab; An upper half PC panel 320 for supporting the stair upper slab is supported on the support 350, and the upper step PC member 320 is disposed between the stepping PC panel 310 and the upper half slab partial half PC panel 320. Assembling 330; Removing the support 350.

The full PC panel 210A for the staircase wall used in the present embodiment has a sleeve 211 in which a reinforcing bar 81 protruding from the lower slab S1 is inserted in the lower surface thereof, as shown in FIG. 4B. Reinforcing bars 212 to be inserted into the sleeve 211 provided on the lower surface of the full PC panel 210A for the staircase wall to be installed on the upper floor is projected on the upper surface thereof is omitted in FIG. 15.

In the installation of the full PC panel 210A for the staircase room wall and the full PC panel 220A for the staircase room entrance side wall, an opening 241 corresponding to the staircase doorway E2 is formed therebetween.

As described above, according to the simultaneous construction type prefabricated stair construction method using the PC foam of the present invention, it is possible to simultaneously proceed with the installation work of the prefabricated stairs by using the half PC panel for the staircase walls instead of using the internal formwork for the staircase rooms. It has the effect of simplifying the construction efficiency.

In addition, according to the simultaneous construction type prefabricated staircase construction method using the PC foam of the present invention has the effect of improving the construction efficiency because the formwork installation range is reduced and the amount of pour of unhardened concrete is reduced.

Claims (8)

As a method of prefabricating a staircase room consisting of a staircase wall, landing and upper and lower stairs, Installing a half PC panel for the staircase walls on the prefabricated lower slab; Installing a PC panel for landing in the middle of the half PC panel for the stair room wall; Assembling a lower staircase PC panel between the lower slab and a stepped PC panel; Installing a half PC panel for the stair room entrance side walls on the lower slab; Installing a support for supporting the partial half PC panel for the upper step slab on the lower slab; Reinforcing the reinforcing bars on the outside of the half PC panel for the stair room wall and the half PC panel for the stair room entrance side wall; Supporting a part half PC panel for the upper part slab on the support, and assembling an upper step PC member between the part PC panel for the step upper part and the partial half PC panel for the upper part slab; Installing the external formwork for the staircase wall and the external formwork for the staircase room entrance side wall at regular intervals on the outside of the half PC panel for the staircase room wall and the half PC panel for the staircase room entrance side wall, and installing the upper slab formwork; Casting uncured concrete between the upper slab formwork and the half PC panel for the staircase room wall and the half PC panel for the staircase room entrance side wall and the external formwork for the staircase room wall and on the partial half PC panel for the upper part slab; Demolding the upper slab formwork, the staircase exterior formwork and the staircase room exit side exterior formwork and the support for the wall; the simultaneous construction type prefabricated staircase construction method comprising a PC form. As a method of prefabricating the staircase walls consisting of staircase walls, landings and upper and lower stairs, Installing a full PC panel for the staircase wall on the prefabricated lower slab; Installing a PC panel for stairway at the middle of the full PC panel for the staircase wall; Assembling a lower staircase PC panel between the lower slab and a stepped PC panel; Installing a full PC panel for the stair room entrance side walls on the lower slab; Installing a support for supporting the partial half PC panel for the upper step slab on the lower slab; Supporting a partial half PC panel for the upper step slab on the support, and assembling an upper step PC member between the stepped PC panel and the partial half PC panel for the upper step slab; Removing the support; Simultaneous construction type prefabricated staircase construction method using a PC form consisting of. The method according to claim 1 or 2, The half PC panel for the staircase room wall, the partial half panel part of the partial half PC panel for the upper part of the staircase, and the half PC panel for the wall of the stair room entrance side are reinforced with truss embedded in the concrete panel so that the reinforced truss is partially exposed from one side of the concrete panel. Simultaneous construction type prefabricated staircase construction method using a PC foam, characterized in that the structure is manufactured. The method of claim 3, wherein The reinforcing truss is a simultaneous construction type using a PC foam, characterized in that the upper and lower cast iron and the upper and lower cast iron connecting rods connected by welding, and the structure includes a reinforcement latch material welded to the upper upper reinforcing bars Prefabricated stair construction method. The method of claim 4, wherein Simultaneous construction type prefabricated staircase construction method using a PC foam, characterized in that the entire upper reinforcing bar and a part of the latch material is manufactured to be exposed from one side of the concrete panel. The method according to claim 1 or 2, In connecting the half PC panel for the staircase wall or the full PC panel for the staircase wall and the PC panel for the stairwell, an insert is embedded in the PC panel member for the wall, and a connection hardware is embedded in the PC panel member for the stairway, and the screw rod is inserted into the insert. A method of constructing a prefabricated staircase construction using a PC foam, characterized in that by connecting and protruding the screw rod and welding the screw rod with the connecting hardware. The method according to claim 1 or 2, In connecting the upper and lower PC panels for stairwells and the PC panels for stairwells or the partial half PC panels for upper slabs, the steel bars are embedded in both panels or members so that they are exposed. A simultaneous construction type prefabricated staircase construction method using a PC foam, characterized in that the connection by welding the connecting piece. The method according to claim 1 or 2, When connecting the half PC panel for the staircase room wall or the half PC panel for the stairway entrance side wall, a screw member is embedded in both panels, and a connecting iron piece is attached to both sides to fasten the bolt penetrating the connecting iron piece to the screw member. Simultaneous construction type prefabricated stairway construction method using PC foam characterized by connecting by

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