JPH0788685B2 - Construction method of building using PC panel - Google Patents

Description

TECHNICAL FIELD The present invention mainly relates to a method of constructing a building using a PC panel, which is carried out in the construction of a building such as a low-rise apartment house.

[Conventional technology]

Traditionally, buildings such as low-rise apartments on the 2nd and 3rd floors are made of wood,
Often constructed with steel or reinforced concrete structures.

[Problems to be solved by the invention]

However, if it is made of wood, it is inferior in fire resistance, durability, and sound insulation.If it is made of steel, in order to ensure heat insulation, sound insulation, and waterproofness, the interior and exterior of heavy equipment must be provided, which increases the cost. I cannot escape.

Furthermore, if the structure is a reinforced concrete structure, the construction tends to be complicated for the scale of the building, and since the weight of the building is considerably heavy, there is a problem that a great deal of labor and construction cost are required for the foundation construction.

For this reason, recently, in order to shorten the construction period, a three-dimensional type reinforcing bar panel with a heat insulating material as a core material is used as a wall panel, etc., and mortar or concrete is sprayed on both sides of this wall panel to construct the building frame. However, it requires a large number of plasterers because the spraying area of mortar and the like is extremely wide, and the finish depends greatly on the skill of the plasterer. There are many problems to solve.

The present invention has been made to solve the above problems, and the construction of a building using a PC panel that enables simplification of construction, simplification, reduction of construction cost, reduction of building weight, etc. The purpose is to provide a construction method.

[Means for solving problems]

The building construction method using the PC panel according to the present invention is
A method of constructing a building using PC panels for constructing a wall portion, a floor portion and a roof portion of a building using a plurality of unit PC panels, wherein the unit PC panels are lattice reinforcing panels arranged in parallel. A three-dimensional reinforcing bar panel with a plurality of lattice reinforcements arranged in between is installed with a heat insulation panel that is eccentric to one side from the middle part, and on the eccentric side of this heat insulation panel, A mortar or concrete layer is formed to a thickness such that the lattice reinforcement and the lattice reinforcing bar panel protruding to the eccentric side are uniformly buried, and the unit PC panel of the wall portion is the mortar or concrete layer on the outside, The heat insulation panel is installed inside, the unit PC panels of the floor portion and the roof portion are installed with the mortar or concrete layer on the lower side, and the heat insulation panel on the upper side, In addition, a mortar or a concrete layer is post-formed on the opposite side of the heat insulating panel to a thickness such that the lattice reinforcement and the grid reinforcing bar panel projecting to the opposite side of the heat insulating panel are uniformly buried.

〔Example〕

Hereinafter, a construction method of a building using a PC panel according to the present invention will be described with reference to an embodiment shown in the drawings. In the construction method according to the present invention, a unit PC shown in FIGS.
Panels are used.

The unit PC panel 1 has a heat insulating panel 3 made of urethane foam or the like over the entire three-dimensional reinforcing bar panel 2 in the middle of the three-dimensional reinforcing bar panel 2 having a predetermined thickness and assembled into a substantially rectangular plate shape. The heat insulating panel 3 is formed by forming a mortar layer or a concrete layer 4 on one side of the heat insulating panel 3, and if necessary, an exterior material such as a tile is attached to the surface of the mortar layer or the concrete layer 4.

The three-dimensional rebar panel 2 has two lattice rebar panels 5 and 5 formed in a substantially rectangular plate shape, which are arranged in parallel to each other, and a plurality of lattice rebars 6, ... Are latticed between the rebar panels 5 and 5. Rebar panel 5
It is configured by arranging the whole of the lattice reinforcing bar panel 5 while being connected to.

The heat insulation panel 5 is installed slightly eccentrically from the middle part of the three-dimensional reinforcing bar panel 2, and the mortar layer or concrete layer 4 is provided with mortar or concrete on the side where the heat insulation panel 3 is eccentrically attached. Lattice reinforcement panel 5 and lattice reinforcement 6 protruding toward the eccentric side
It is formed by uniformly filling the thickness to fill.

The lattice reinforcing bar panel 5 and the lattice reinforcing bars 6 on the side where the mortar layer or the concrete layer 4 of the three-dimensional reinforcing bar panel 2 is not formed are left exposed.

Fig. 5 shows the appearance of the building consisting of the unit PC panel 1,
A plurality of unit PC panels 1 are installed on the wall portion, floor portion and roof portion of the building as wall panels 7, floor panels and roof panels 9, respectively.

Next, the construction method will be described. The wall panel 7 has the mortar layer or the concrete layer 4 on the outer side, and the heat insulating panel 3
Are placed vertically inside the mortar layer or concrete layer 4, the floor panel 8 and the roof panel 9 have the mortar layer or concrete layer 4 located on the lower side, and the heat insulation panel 3 is placed in the mortar layer or concrete layer 4. Position it horizontally and install it horizontally.

In addition, inside the joints between the adjacent left and right wall panels 7,7, inside the joints between the adjacent floor panels 8,8 and inside the joints between the adjacent roof panels 9,9, the wall panels 7 and the floor panels are joined together. A reinforcing wire net 10 or a reinforcing bar 11 is installed to integrally connect the roof panels 8 and the roof panels 9 together.

The reinforcing wire mesh 10 and the reinforcing bars 11 are installed along the wall panel 7 and the floor panel 8, respectively, and are completely embedded in the mortar or concrete filled after the installation of the reinforcing wire mesh 10 and the reinforcing bars 11.

Moreover, the caulking material 12 is filled outside the joints of the wall panels 7 and 7 so that rainwater or the like does not enter the inside of the room, so that the waterproof treatment of the joints of the wall panels is surely performed.

Inside the joint between the upper and lower wall panels 7,7, a plurality of reinforcing reinforcing bars 11 are arranged along the vertical direction of the wall panel 7, and a plurality of joints between the wall panel 7 and the floor panel 8 are provided. Connected wire mesh
13 is installed and completely embedded in the mortar or concrete to be filled after the reinforcing wire net 11 and the connecting rebar 13 are installed.

The connecting wire mesh 13 is formed in an L shape, and one end 13a thereof extends along the floor panel for a certain length, and the other end 13b extends within the wall panel 7 for a certain length to provide a fixing length at both ends. Secure enough.

The caulking material 12 is filled outside the joints between the upper and lower wall panels 7 and 7 so that rainwater and the like do not enter, so that the joint between the upper and lower wall panels 7 and 7 is reliably waterproofed.

Indoor side of the wall panel 7 installed in this way, the floor panel 8
By spraying mortar or concrete on the upper side of the roof panel 9 and further on the joint between the upper and lower wall panels 7 and the floor panel 8 until the exposed portion of the three-dimensional reinforcing bar panel 2 is completely filled, the indoor side portion of the wall portion. , The floor part and the upper part of the roof part are constructed respectively.

Reinforcing bars 11 for reinforcing the peripheral portion of the opening are arranged around the opening such as a window (see FIG. 9).

When applying mortar or concrete to the inside of the wall panel 7, a formwork may be installed and the mortar or concrete may be filled inside the formwork.

As described above, the mortar or concrete layer is post-cast and formed on the exposed portion of the three-dimensional reinforcing bar panel 2.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

Since the mortar or concrete spraying on site can be done only on the indoor side, omitting the outdoor side of the building, the spraying area is halved, and external scaffolding is almost unnecessary, greatly reducing the construction period. Not only is it possible, but the number of plasterers can be reduced as much as possible, and construction costs can be greatly reduced.

Further, since the mortar and the like are sprayed only on the indoor side, if the indoor side is finished by the so-called GL method or the like, relatively rough spraying is sufficient and labor saving can be achieved.

Furthermore, since it is not affected by the weather such as rain,
Plastering work can be done smoothly.

Since the heat insulation panel is attached to the unit PC panel in advance, the heat insulation material can be attached at the same time when the unit PC panel is attached, which saves labor in the construction.

Further, the heat insulation panel is eccentrically attached to one side from the middle portion of the three-dimensional reinforcing bar panel, and serves as a backup material for mortar or concrete immediately after spraying, so a mortar or concrete layer preformed on one surface of the unit PC panel, It can be formed as thin as possible so as to be light and easy to handle such as building, and the mortar or concrete layer can have any thickness.

One side of the unit PC panel is precast and has sufficient rigidity, so there is no risk of the unit PC panel being deformed or damaged during construction, and precision retention and construction safety can be achieved.

[Brief description of drawings]

1 to 9 show a first embodiment of the present invention. FIG. 1 is a perspective view of a three-dimensional reinforcing bar panel, FIG. 2 is a partial sectional view thereof, and FIG. 3 is a part thereof. Perspective view, Fig. 4 shows unit PC
Panel perspective view, FIG. 5 is a partial perspective view of a building composed of unit PC panels, FIG. 6 is a partial front view of the outer wall of the building,
7 is a cross-sectional view of the outer wall portion, FIG. 8 is a cross-sectional view of the joint portion between the wall portion and the floor, and FIG. 9 is a cross-sectional view of the outer wall portion of the building opening. 1 …… Unit PC panel, 2 …… Three-dimensional rebar panel, 3 ……
Insulation panel, 4 ... Mortar or concrete layer, 5
…… Lattice rebar panel, 6 …… Lattice rebar, 7 …… Wall panel, 8 …… Floor panel, 9 …… Roof panel, 10 …… Reinforcing wire mesh, 11 …… Reinforcing rebar, 12 …… Caulking material, 13… … Connected wire mesh.

Claims (1)

[Claims] 1. A method of constructing a building using PC panels for constructing a wall portion, a floor portion and a roof portion of a building using a plurality of unit PC panels, wherein the unit PC panels are arranged in parallel. In addition to installing a heat-insulating panel by eccentricizing one side from the middle part to a three-dimensional type reinforcing bar panel that arranges multiple lattice reinforcements between the grid reinforcement bars that have been installed, on the side where this eccentric panel is eccentric , A mortar or concrete layer is formed to a thickness such that the lattice bars and the lattice reinforcing bars protruding on the eccentric side of the heat insulation panel are uniformly buried, and the unit PC panel of the wall portion is the mortar or concrete layer. On the outside, the heat insulating panel is installed inside, and the unit PC panels of the floor portion and the roof portion have the mortar or concrete layer on the lower side and the heat insulating panel on the upper side. Installed on the opposite side of the heat insulation panel, and by post-casting a mortar or concrete layer to a thickness that uniformly fills the lattice and grid reinforcement bars protruding to the opposite side of this heat insulation panel. How to build a building using the characteristic PC panel.