JPH047789B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a balcony floor renovation method for renovating an old balcony floor whose slab is made of cast concrete into a floor using a dry concrete slab.

[Background technology]

Conventionally, there is a balcony floor in which a floor slab is formed by pouring concrete on-site on a deck plate.

When cracks occur in such a balcony floor due to long-term use, there is a demand for renovation to a floor using a dry concrete slab such as a precast concrete slab.

However, in the past, the entire balcony had to be dismantled and rebuilt, which required a lot of material and labor.

[Purpose of the invention]

An object of the present invention is to provide a balcony floor renovation method that allows a balcony floor in the form of cast-on-site concrete to be easily transformed into a dry concrete slab type by partial demolition.

[Disclosure of the invention]

In the balcony floor renovation method of the present invention, a decking plate is attached to a pair of side beams and a leading edge beam and a trailing edge beam connected between the tips and bases of the side beams, respectively, and a decking plate is formed on the decking plate. In a balcony floor renovation method for renovating an old balcony floor provided with poured concrete to a floor using dry concrete slabs, a step of removing the deck plate and the poured concrete, leaving each of the beams;
A joint beam extending between the longitudinal intermediate portions of the pair of remaining side beams, a leading edge support material and a trailing edge support material along the leading edge beam and the trailing edge beam, respectively, and spanning between the leading edge support material and the joint beam. A process of installing floor slab support material;
A step of laying a main dry concrete slab whose front and rear edges are supported by the joint beam and the trailing edge receiving material, and a dry concrete slab with gutter grooves whose front and rear edges are supported by the leading edge receiving material and the slab receiving material. It includes.

According to the configuration of this invention, the side beams, front edge beams, and rear edge beams of the old balcony floor are left as they are, and joint beams and various supporting materials are provided on these to form the main dry concrete floor slab and the dry concrete floor with gutter grooves. Since the block was laid down, only partial disassembly was required. Therefore, compared to reassembling the entire structure, less materials are used, and the effort required for dismantling and rebuilding is also simpler.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 5. FIG. 1 is a plan view with the floor slab omitted after the renovation. To explain the outline, in the figure, a pair of side beams 2 protruding from the building body 1, and a front edge beam 3 and a rear edge beam 4 provided between the tips and bases of these side beams 2 are the existing ones. It is. A joint beam support material 5 is attached to the existing side beam 2 and a joint beam 6 is attached thereto, and a leading edge support material 7 and a trailing edge support material 8 are attached to the front edge beam 3 and the rear edge beam 4. Then, the floor slab support material 9 is joined between the leading edge support material 7 and the joint beam 6. In this state, the main dry concrete floor slab 10 and the gutter-grooved dry concrete floor slab 11 are laid.

Next, we will explain the construction procedure from the pre-renovation state and explain the details of each part. Figure 5 shows the state before renovation. A deck plate 12 is attached to a pair of side beams 2 protruding from the building body 1, and a front edge beam 3 and a rear edge beam 4 provided between their tips and base ends, and concrete 13 is poured on site. The floor slab is formed by installing The driving cleat 13 has a gutter groove 13a and has a gentle slope on its upper surface. 1
4 is a downspout. The side beam 2 is joined to the balcony column 15 via a gusset plate 16 at the middle in the longitudinal direction. 17 is a handrail, and the handrail support 17a is joined to the side beam 2 or the front edge beam 3.

The front edge beam 3 is made of angle iron, and the end plate 2a of the side beam 2
is joined to. The trailing edge beam 4 is made of a combination of angle steel 4a and channel steel 4b. The deck plate 12 is made of a flat or corrugated steel plate, and is fixed to the upper surface of the leading edge beam 3 and the upper surface of the angle iron 4a of the trailing edge beam 4. The side beam 2 is made of inward channel steel, and a horizontal protrusion 13b (see FIG. 4) is provided on the inner surface of the web by welding angle steel. It is surrounded by the lateral edges of. The base end of the side beam 2 is joined to the lattice beam 18 of the building body 1 via a joining member 19. In addition, the structure may be such that the trailing edge beam 4 is joined to the building body 1, and the side beams 2 are joined to this.

During the renovation, the deck plate 12 and the poured concrete 13 are removed from the old balcony floor, leaving the side beams 2, front edge beams 3, and rear edge beams 4 as they are, as shown in FIG. Balcony pillar 1 in Figure 5
Leave 5 as well.

Next, as shown in FIGS. 1 to 3, the leading edge support material 7 is attached to the leading edge beam 3 using a fixing device such as a tatupin screw.
9 (FIG. 2), and also fix the vertical beam support member 5 to the side beam 2 with fixing tools 20 (FIG. 3) such as tatupin screws. As shown in FIG. 2, the leading edge support member 7 is groove-shaped, and a deck support member joint piece 7a is welded thereto. The joint beam receiving material 5 has a groove-shaped joint beam receiving material main body 5a,
The floor slab receiving piece 5b and the connecting beam joint piece 5c are welded together.

The connecting beam 6 has joint pieces 6a protruding from both ends and a floor slab receiving material joint piece 6b protruding from one side.
The joint pieces 6a at both ends are attached to the joint beam joint pieces 5c of the joint beam receiving material 5.
are joined with fixing tools 21 such as bolts and nuts. Thereafter, the floor slab support material 9 is joined to the floor slab support material joining pieces 6b, 3a of the connecting beam 6 and the leading edge support material 3 using fixing tools 22, 23 such as bolts and nuts. Next, attach the trailing edge support member 8 to the trailing edge beam 4 with a fixing device 24 such as a pin screw (Fig. 2).
Join with. Note that the trailing edge support material 8 may be installed before the leading edge support material 7 and the joint beam support material 5 are installed.

After the framework is completed in this way, the main dry concrete deck slab 10 is placed over the joint beams 6 and the trailing edge support material 8, and the dry concrete deck slab 11 with gutter grooves is placed.
is placed over the floor slab support material 9, the leading edge support material 7, and the floor slab support piece 5b of the joint beam support material 5. The main dry type concrete floor slab 10 and the gutter-grooved concrete floor slab 10 are fixed to each receiving material or the like with fixing tools such as pin screws. Caulk 2 for joints and surrounding edges
5, 26 for waterproofing. The main dry concrete floor slab 10 and the gutter-grooved intermediate floor slab 11 are made of precast concrete slabs, etc., and have a water gradient formed on their upper surfaces. The main dry concrete floor slab 10 is provided with a through hole 10a. The gutter-grooved concrete floor slab 11 has gutter grooves 11a, and has a narrow front-rear width of, for example, about 200 mm.

According to this renovation method, the side beams 2, front edge beams 3, and rear edge beams 4 of the old balcony floor are left as they are, and joint beams 6 and various supporting materials are installed on them, and the main dry concrete is installed. Since the floor slab 10 and the dry concrete floor slab 11 with gutter grooves are laid, only partial demolition is required. Therefore, compared to reassembling the entire structure, less materials are used, and the effort required for dismantling and rebuilding is also simpler.

〔Effect of the invention〕

The balcony floor renovation method of this invention leaves the side beams, front edge beams, and rear edge beams of the old balcony floor as they are, and installs joint beams and various supporting materials on these, and installs the main dry concrete floor slab and dry concrete with gutter grooves. Since we installed floor slabs, only partial demolition was required. Therefore, compared to reassembling the whole thing,
This has the effect of requiring less materials and making dismantling and rebuilding easier.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention after the floor slab has been removed after renovation, and Fig. 2 is a cross-sectional view of the main dry concrete slab and gutter-grooved concrete slab in Fig. 1. The side view, Figure 3, is the same as in Figure 1, with the main dry concrete slab and gutter grooved concrete slab installed.
A line sectional view, FIG. 4 is a cross-sectional side view of the state in the middle of the renovation, and FIG. 5 is a cross-sectional side view of the state before the renovation. 1...Building body, 2...Side beam, 3...Front edge beam,
4... Trailing edge beam, 5... Joint beam receiving material, 6... Joint beam, 7
... Leading edge receiving material, 8... Trailing edge receiving material, 9... Floor slab receiving material, 10... Main dry concrete floor slab, 11...
Concrete floor slab with gutter grooves, 12...Deck plate, 13...Poured concrete.

Claims (1)

[Claims] 1 A deck plate is attached to a pair of side beams and a leading edge beam and a trailing edge beam connected between the tips and bases of the side beams, respectively, and poured concrete is placed on the deck plate to serve as the floor slab. A balcony floor renovation method in which a balcony floor is renovated to a floor using dry concrete slabs includes a step of removing the deck plate and poured concrete while leaving each of the beams, and a step of removing the deck plate and poured concrete while leaving each of the beams, and removing the remaining pair of side beams. a step of providing a joint beam extending between the longitudinally intermediate portions, a leading edge support material and a trailing edge support material along the leading edge beam and the trailing edge beam, respectively, and a floor slab support material extending between the leading edge support material and the joint beam; The method includes the step of laying a main dry concrete slab whose front and rear edges are supported by a joint beam and a trailing edge receiving material, and a dry concrete slab with gutter grooves whose front and rear edges are supported by the leading edge receiving material and the slab receiving material. How to renovate a balcony floor.