JP2781643B2 - Basement building block unit - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basement building block unit used for building a basement such as a house, and more particularly to a basement building for forming a basement by dividing the basement into a plurality of parts. Block unit.

"Conventional technology" Basements have been installed even in ordinary houses due to the deterioration of housing conditions in recent years.

Conventionally, in many cases, the basement of a house is configured as an underground storage, and its structure is also obtained, for example, by mounting a container-shaped capsule through a hole dug in the ground via an anchor bolt and refilling the hole. (For example, Japanese Patent Publication No. 1-15663, "Underground storage and its manufacturing method")
reference).

However, since the basement having such a configuration functions as a basement storage, the inside size is reduced as a whole, and the function required as a living room of a house is not sufficiently satisfied.

Therefore, in recent years, there has been a tendency to make the entire room larger by making the basement into concrete.

Such a concrete basement is generally constructed of cast-in-place concrete, for example.

This is, first, using a power shovel or the like, excavation work is performed slightly wider than the site of the basement, then lay a gravel etc. on the bottom, and lay concrete on the gravel laid, Perform the construction of so-called basic concrete.

Then, the floor reinforcing bars are arranged in a grid pattern, and concrete is poured into the floor reinforcing bars. At this time, the projecting bars connected to the reinforcing bars of the side walls project from the surface of the concrete at the positions where the side walls are erected. It is arranged as follows.

Next, after the concrete on the floor is hardened, the vertical bars of the side walls are connected to the projecting bars projecting at the predetermined positions, and the horizontal bars are connected to the vertical bars of these side walls, and the reinforcing bars of the side walls are connected in a grid pattern. Execute.

Next, a formwork is assembled on both sides of the rebar on the constructed side wall, and concrete is poured into the formwork to construct the side wall.

Then, after the concrete on the side wall is solidified, the formwork is dismantled, and the space outside the side wall is filled to complete it.

“Problems to be solved by the invention” However, in the conventional basement technology, since the construction work is the construction work of cast-in-place concrete, there are disadvantages such as poor work efficiency on site and a long construction period. Was.

In addition, in the construction work using cast-in-place concrete, when constructing the side walls, spaces must be provided for assembling the formwork on both sides of the side wall rebar, and the ground must be dug deeper than the construction area. However, there are problems that it takes time and costs.

Therefore, the present inventors have conducted intensive studies to solve these problems, and as a result, if the entire basement is constructed by joining precast concrete blocks divided into a plurality of parts, work efficiency at the site is improved, and Since the basement was formed simply by installing the blocks, it was decided that the excavation area would be small.

However, even if the interior of the basement is simply partitioned and divided into blocks, the size of the blocks themselves increases, and when the blocks are manufactured at a factory or the like, the rebar arrangement work becomes complicated, and There are still problems to be solved, such as complicated construction work.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make precast concrete blocks easy to arrange in a factory when producing blocks, and to improve work efficiency on site. Therefore, it is an object of the present invention to provide a basement building block unit capable of improving construction cost and, therefore, reducing construction costs.

"Means for Solving the Problems" In order to achieve the object, the present invention constructs a basement in which a floor and a side wall around the floor are formed of reinforced concrete by combining a plurality of precast concrete blocks. A basement building block unit, wherein the base unit is formed in a substantially U-shape including a bottom plate forming the floor and a side plate forming the side wall, and the bottom plate is formed in a lattice shape. A floor rebar unit is disposed, a wall rebar unit formed in a lattice shape is disposed on the side plate portion, and the floor portion is provided on a continuous portion between the side plate portion and the bottom plate portion. A horizontal joint connected to the reinforcing bar unit, a vertical joint connected to the wall reinforcing unit, and connecting the horizontal joint and the vertical joint together with the side plate and the bottom plate. Min and a plurality of lateral stripes extending to the wall - wherein the floor fitting rebar unit is provided.

The block unit for constructing a basement according to claim 2, wherein the wall-floor joint reinforcing unit is provided in advance with insertion means through which a PC steel material for connecting each block unit is inserted. Features.

Further, in the basement building block unit according to claim 3, a wedge-side plate portion forming a wedge-side wall portion is formed between ends of the both-side plate portions, and the wedge-side plate portion has a lattice shape. The wall-to-floor joint reinforcing bar unit is disposed at a portion connected to the bottom plate portion, and the wall-to-floor joint reinforcing bar unit is provided with the side plate portion and the bottom plate. It is characterized in that it is formed integrally with a wall-floor joint rebar unit connecting the parts.

[Operation] According to the basement building block unit having the above configuration,
When the block unit is manufactured in a factory, a wall-floor joint reinforcing bar unit is disposed at a predetermined position, and a horizontal reinforcing portion of the wall-floor joint reinforcing unit is connected to a floor reinforcing bar unit formed in a lattice. In addition, by connecting the wall rebar unit to the vertical joint, a substantially U-shaped rebar can be easily assembled.

Then, a formwork is formed around the rebar assembled as described above, and concrete is poured into the formwork, so that a substantially U-shaped precast concrete block can be easily formed.

At the site, by arranging these substantially U-shaped block units, a basement of any size can be easily constructed.

According to the basement building block unit according to claim 2, since the wall-floor joint reinforcing unit is provided with the insertion means in advance, when connecting these block units at the site, a PC steel material is inserted into the insertion means. The block units can be integrated by inserting them, and in this case, approximately U-shaped corners are fastened with PC steel,
The strength of the structure can be improved.

Further, if the basement building block unit according to claim 3 is arranged on the wife side of the basement, the basement having the entire surface made of reinforced concrete can be easily assembled only by assembling the block without constructing the wife side wall at the site. Can be configured.

In this case, since the wall-floor joint reinforcing bar unit of the wife side plate portion and the wall-floor joint reinforcing bar unit of the wife side are integrally formed, the strength of the structure can be sufficiently satisfied.

Hereinafter, an embodiment of a basement building block unit according to the present invention will be described with reference to the drawings.

FIG. 1 shows an intermediate block unit 1 which forms an intermediate part of a basement in the basement building block unit in this embodiment.

The intermediate block unit 1 includes a bottom plate 2 forming a floor of a basement, a side plate 3 forming a side wall of the basement,
3 is formed by a substantially U-shaped precast concrete block.

On the bottom plate 2 of the intermediate block unit 1, floor reinforced concretes 4, 4 each formed in a lattice shape are arranged in upper and lower two stages, and the side plate 3 is provided with a floor reinforced unit 4. Similarly, wall rebar units 5, 5 each formed in a lattice shape are arranged in parallel at predetermined intervals.

The floor rebar units 4 and the wall rebar units 5 are assembled in a lattice shape in advance, and their connecting portions are firmly connected by welding or the like.

Wall-floor joint rebar units 6, 6 for connecting the floor rebar units 4, 4, and the wall rebar units 5, 5, respectively, are provided in a continuous portion between the bottom plate portion 2 and the side plate portion 3. Have been.

As shown in FIG. 2, the wall-to-floor joint reinforcing bar unit 6 has a substantially square shape at the corners where the bottom plate portion 2 and the side plate portion 3 of the four horizontal bars 6a of a predetermined length intersect. Are arranged in
To these transverse bars 6a, a plurality of floor joint floors 6b connected to the floor rebar units 4, 4 are connected at predetermined intervals in a horizontal direction, and a wall connected to the wall rebar units 5, 5 is provided. A plurality of joint bars 6c are connected so as to be substantially orthogonal to the floor joint bars 6b.

The floor joint reinforcement 6b and the wall joint reinforcement 6c of the wall-floor joint reinforcement unit 6 each have one reinforcement bent substantially U-shaped, and its root portion is fixed to the horizontal reinforcement 6a by welding or the like. You.

The wall-to-floor joint reinforcing bar unit 6 has a horizontal bar.
A sheath tube 7 through which the PC steel material is communicated along the horizontal streaks 6a is disposed at substantially the center of the sheath 6a so as to be supported by grid streaks 8 attached in a grid pattern. Anchor plates 9, 9 are respectively attached.

In FIG. 1, holes 10, 10,... Formed in the upper end portions of the side plate portions 3, 3 are formed by insert plates 28 (in the form of screws) into which long bolts 27 for connecting post-beams 23, 24 described later are screwed. (See FIG. 8).

Next, FIG. 3 shows a wife-side block unit 11 that forms the wife side of the basement of the basement building block unit according to the present invention.
Is a side plate 1 similar to the intermediate block unit 1.
2 and 12, and a bottom plate portion 13. Between the end portions of the side plate portions 12 and 12, a wife side plate portion 14 forming a wife side wall portion of the basement is formed.

The intermediate side block unit 1 is also provided on the wife side plate portion 14.
Similarly to the above, a wall rebar unit 15 formed in a lattice shape is disposed, and a wall-floor joint rebar unit 16 is disposed in a portion connected to the bottom plate 13.

As shown in FIG. 4, the wall-to-floor joint reinforcing bar unit 16 is formed integrally with the wall-to-floor joint reinforcing bar unit of the side plate portion 12.

That is, the horizontal streak 16a provided to extend to the corner of the continuous portion between the wife side plate portion 12 and the bottom plate portion 13 is bent at a substantially right angle at the continuous portion between the side plate portion 12 and the bottom plate portion 13. Side plate part
It is formed so as to extend to the continuous portion of 12 and the bottom plate portion 13, wall joint bars 16 b are arranged at predetermined intervals on the horizontal streaks 16 a, and floor joint bars 16 c are arranged from the wife side It is arranged so as to protrude toward the bottom plate portion 14 at a predetermined interval.

A sheath tube 1 is provided substantially at the center of the horizontal streak 16a on the side plate portion 12.
7 is disposed via grid bars 18 like the wall-floor joint reinforcing bar unit 6 of the intermediate block unit 1, and anchor plates 19, 19 are attached to both ends.

Next, FIGS. 5 (a) to 5 (f) are diagrams showing a method of manufacturing the above-mentioned basement building block unit. In this drawing, the intermediate block unit 1 will be described as an example.

First, as shown in FIG. 5 (a), the outer frame 20 is formed in a substantially U-shape, and then, as shown in FIG. Place on the part.

Next, as shown in FIG. 5 (c), the floor rebar units 4, 4 are welded to each other between the floor joint bars 6b, 6b of the wall-floor joint units 6, 6 by welding or using joint members or the like. Connect to each step.

Then, as shown in FIG. 5 (d), the wall rebar units 5, 5 are connected to the wall joint rebars 6c of the wall-floor joint rebar units 6, 6, respectively, by welding or joint members.

As a result, a substantially U-shaped rebar can be assembled, and then the inner frame 21 is assembled as shown in FIG.

After the concrete is poured from the upper opening and cured, the inner frame 20 and the outer frame 21 are removed, and a substantially U-shaped precast concrete block is completed as shown in FIG. I do.

In addition, also in the wife side block unit 11, the outer frame 20 is assembled similarly to the intermediate block unit 1, and
Floor and wall rebars are arranged around the wall-floor joint rebar unit 16, the inner frame 21 is assembled, and concrete is poured into the inner frame 21 to complete the wife-side block unit 11 having the above configuration. Things.

According to the basement building block units 11 and 11 configured as described above, when the block units 1 and 11 are manufactured in a factory, the wall-floor joint reinforcing unit 6 and
16 is disposed at a predetermined position, and the wall-floor joint reinforcing bar unit 1,
By connecting the floor rebar unit 4 formed in a lattice shape to the 16 horizontal joints 6b and 16c and connecting the wall rebar unit 5 to the vertical joints 6c and 16b, a substantially U-shaped rebar is formed. Can be easily assembled.

And formwork 2 around the rebar assembled as above
By forming concrete 0,21 and casting concrete into the formwork 20,21, a substantially U-shaped precast concrete block can be easily formed.

Next, a method and operation of constructing a basement using the basement building block units 1 and 11 thus formed will be described with reference to FIG.

The basement building block units 1 and 11 previously manufactured in the factory as described above are transported to the work site by trucks or the like.

At this time, since the basement building blocks 1 and 11 are formed in a U-shaped cross section divided by a plane perpendicular to the longitudinal direction of the basement, the type of the block is the above-mentioned U-shape forming an intermediate portion of the basement. Only two types of the intermediate block unit 1 and the above-described wife side block unit 11 forming the wife wall are required. Particularly, when a large basement is constructed, it is possible to cope with the problem by increasing the number of the middle block units 1. It is not necessary to increase the size of the block unit itself, and the portability to the site can be made extremely good.

That is, FIG. 6 shows a case where three rooms are arranged in parallel, and the wife-side block unit 11 is
The group and the middle block unit 1 are used three in the center room and four in the rooms on both sides.

In order to assemble such a basement at the site, firstly, root cutting work on the ground where the basement is to be constructed, a hole of a predetermined size is dug, and then the splittering business and the dumping concrete After that, the foundation is constructed, and at this time, the steel pipes 40, 40 which are the reference of the block installation level are embedded (see FIG. 6 (a)).

Next, the basement building block unit of this embodiment
The trucks 1, 11 are suspended from a truck using a crane or the like, and they are combined one after another and joined. The assembling sequence is performed according to the steps shown in FIGS.

That is, the first installation is started from the center of the arrangement (the center of the central room in the embodiment) as shown in FIG. 6 (b), and then, as shown in FIG. The middle block units 1B and 1C of the rooms on both sides are joined to the left and right of the block unit 1A.

At this time (when the middle block units 1B and 1C of the left and right rooms are joined to the center block unit 1A), a connection hole D is provided between the middle block unit 1A and the left and right middle block units 1B and 1C. As shown in FIG. 7, a connecting bolt 29 is inserted into the connecting hole D, and a concave portion E is formed in the bottom plate portion 4 facing the side plate portion 3 (formed in advance). 9) and FIG.
As shown in FIG. 10, the connecting hardware 30 is hung over the concave portion E to integrate the respective block units 1A, 1B, 1C.

Also, as shown in FIGS. 11 and 12, a joint fitting 31 having a structure that can be stopped by a bolt 31a as necessary is attached to the upper end of the side plates 3, 3 of the block units 1A, 1B, 1C. Alternatively, the fastening may be performed also on the upper portions of the block units 1A, 1B, 1C.

Then, while joining the middle block unit 1A of the center room in the axial direction, each time, the middle block units 1B and 1C of the rooms on both sides are installed and joined to the left and right of the middle block unit 1A. Iki (see FIG. 6 (f)), and finally the dam wall block unit 11 which forms the dam wall
(See Fig. 6 (e)), then insert the PC steel material 25 into the sheath pipes 7, 17 of each block 1, 11 and tension them with jacks to fix the both ends to reduce the prestress. (See Fig. 6 (e)).

After the tension of the PC steel material 25, grout is filled into the sheath tubes 7, 17.

As described above, according to the basement building block units 1 and 11 in this embodiment, the wall-floor joint rebar units 6, 16
When the block units 1 and 11 are connected on site, the PC tubes 25 are inserted into the sheath tubes 1 and 17 so that the block units 1 and 11 are integrated with each other. In this case, since the substantially U-shaped corners are fastened by the PC steel material 25, the strength of the structure can be reduced to a factory.

Furthermore, the basement building block unit of this embodiment
Since the wife side block unit 11 forming the wife side wall portion is formed in the factory in advance in 1, 11, if the wife side block unit is arranged on the wife side of the basement as described above, the wife side wall portion can be constructed on site. , A basement whose entire surface is formed of reinforced concrete can be easily constructed only by assembling the block units.

In this case, since the wall-floor joint reinforcing bar unit of the wife side plate portion 14 and the wall-floor joint reinforcing bar unit of the wife side are integrally formed, the strength of the structure can be sufficiently satisfied.

Next, after the tension of the PC steel material 25, as shown in FIG. 6 (d), a long berth 23 is used on the side plates 3 and 12 of the room using a long bolt 27 as shown in FIG. Then, as shown in FIG. 6 (g), the short berth 24 is assembled as shown in FIG. 13 to complete the basement.

Two types of long and short beams 23, 24 bridged over the upper ends of these block units 1, 11 are respectively formed in a rectangular column shape by precast concrete, and are connected to the upper ends of the basement building block units 1, 11 connected in the longitudinal direction. And supports the first floor panel of the upper building (the house in the example of FIG. 14), and the long berth 23 is placed above and below the berth 23 on the side plate along the longitudinal direction of the room. Long bolt to penetrate
It is fixed by 16.

In addition, as shown in FIG.
A mounting portion 23a for mounting the short lengthwise beam 24 is formed so as to protrude, and a long bolt 16 penetrating vertically through the short lengthwise beam 24 is screwed into the insert 17 so that it can be firmly fixed to the mounting portion 23a. Has become.

As shown in FIG. 8, the long bolt 27 is mainly composed of a shaft 27a having a thread formed thereon, and a nut 27c screwed on the shaft 27a via a fixing plate 27b. ing.

After the tension of the PC steel 25 and the mounting of the beams 23, 24 have been completed as described above, the bottom plate portions of the block units 1, 11 are completed.
Grout is poured between 2,13 and the foundation concrete, and the gap between the bottom plate parts 2,13 and the foundation concrete is filled with grout, and the bottom plate parts 2,13 of each block unit 1,11 are adhered to the foundation Let it.

Then, when the internal finishing work and the like are finally completed, a basement as shown in FIG. 6 (R) is completed.

On the other hand, when the house H is constructed on the basement G constructed as described above as shown in FIG. 14, for example, when the house is mainly composed of panels, , 24 is laid with unitized floor panels, on which the first and second floor wall panels are assembled,
A method of constructing a building by assembling a roof frame with a frame, a wooden frame, or the like is adopted.

In addition, each wall panel on the first floor portion may be integrated by dropping a hole at the lower end of the wall panel into an anchor bolt projecting from the upper surface of the concrete berth and tightening the bolt.

According to the above procedure, the block 1A is installed from the center of the arrangement, and the connecting bolt 29 and the connecting hardware 30 are mounted on the left and right sides of the block.
While assembling the blocks in the front-rear direction while assembling the blocks of the adjacent rooms via, installation of each block inside the root cut hole,
The joining operation can be performed with high accuracy.

In the basement of the embodiment, the blocks constituting each room
In the case of 1,11, the side plate portion to be joined is formed to be about 2/3 the thickness of the other side plate portion, so the side wall that becomes a partition increases even when the side plate portions are joined and overlapped. Therefore, even in a basement having a configuration in which a plurality of rooms are connected in the width direction, there is an advantage that the members can be effectively used and the thickness of the inner partition wall does not increase.

Further, in the embodiment, since the room constituting the basement is constructed by the plurality of precast concrete blocks 1 and 11 in a form divided by a plane orthogonal to the longitudinal direction, the block units are connected in the longitudinal direction. The room can be formed by a simple operation, and the on-site assembly can be easily performed.

Further, since the block units 1 and 11 in the adjacent rooms are integrated by the bolts 29 penetrating the side plates 3 and 12 of the block units 1 and 11, no step is formed between the rooms. In addition, since the rooms are firmly connected to each other, there is an advantage that the strength of the structure can be improved.

Further, in the embodiment, since the house H is assembled on the base of the basement of the basement, it is possible to omit the construction work of the foundation which was conventionally required. Since the basement can be formed without any restriction, there is an advantage that a large basement can be easily constructed.

By the way, as the house H, for example, unitized floor panels are laid on the girder beams 23 and 24, and a first-floor wall panel, a second-floor floor panel, and a second-floor wall panel are assembled thereon. Examples of the structure include a structure obtained by assembling a roof panel with a frame, a wooden frame, etc., but the structure of a house is not limited to such a structure, and is constructed by a conventional construction method. Or, it may be a unit house or the like.

In addition, in the case of a house by the above-described panel construction method, the joint between the house and the berth is provided by, for example, protruding an anchor bolt on the upper surface of the berths 23 and 24, and providing a wall, a floor, or the like via the anchor bolt. Panel may be integrated.

It should be noted that the present invention is not limited to the above-described embodiment, and the block units 1,
It goes without saying that the size, shape, etc. of 11 can be changed.

In addition, as a matter of course, an opening or the like forming an entrance is formed in each of the block units 1 and 11 in a portion forming the entrance of the room.

“Effects of the Invention” As described above, according to the basement building block unit of the present invention, the following effects can be obtained.

The basement building block unit according to claim 1 is formed in a substantially U-shape including a bottom plate forming a floor and a side plate forming the side wall, and the bottom plate is formed in a lattice shape. A floor rebar unit is disposed, and a side plate portion is provided with a wall rebar unit formed in a lattice shape, and a continuous portion between the side plate portion and the bottom plate portion includes the A horizontal joint connected to the floor reinforcing unit,
A wall-floor joint reinforcing bar comprising a vertical joint connected to the wall reinforcing unit, and a plurality of horizontal bars connecting the horizontal joint and the vertical joint and extending to a continuous portion between the side plate and the bottom plate. Since the unit is provided, when the block unit is manufactured at a factory, the wall-floor joint reinforcing unit is arranged at a predetermined position, and the wall-floor joint reinforcing unit is arranged in a grid at the horizontal joint. By connecting the formed floor rebar unit and the wall rebar unit to the vertical joint, a substantially U-shaped rebar can be easily assembled.

Then, a formwork is formed around the rebar assembled as described above, and concrete is poured into the formwork, so that a substantially U-shaped precast concrete block can be easily formed.

At the site, by arranging these substantially U-shaped block units, a basement of any size can be easily constructed.

That is, the room unit that is the main part of the basement is formed by connecting a plurality of precast concrete blocks, and the room units are connected by bolting of the blocks constituting the room unit. Compared to the basement, there is an advantage that the excavation of the root cutting hole can be made smaller and the work on site can be simplified.

In addition, even if the number of rooms is increased, the construction process does not change, and it can be easily handled simply by increasing the joining work in the block longitudinal direction and width direction. Can be.

As described above, the basement can be formed with a small number of types of precast concrete blocks, so that the work efficiency at the site can be improved and the construction cost can be reduced.

In the basement building block unit according to claim 2, since the wall-floor joint reinforcing bar unit is previously provided with an insertion means through which a PC steel material for connecting each block unit is inserted, When connecting these block units, it is possible to insert the PC steel material into the insertion means and integrate the block units together. In this case, the substantially U-shaped corners are fastened by the PC steel material, thus The strength of the body can be improved.

The block unit for constructing a basement according to claim 3, wherein a wife side plate portion forming a wife side wall portion is formed between ends of the both side plate portions, and the wedge side plate portion is formed in a lattice shape. A wall-reinforcing bar unit is disposed, and a wall-floor joint reinforcing bar unit is disposed in a portion connected to the bottom plate portion,
Since the wall-floor joint rebar unit is formed integrally with the wall-floor joint rebar unit connecting the side plate portion and the bottom plate portion, the entire surface can be easily formed without constructing the end wall portion at the site. A basement made of reinforced concrete can be constructed only by assembling blocks.

In this case, since the wall-floor joint reinforcing bar unit of the wife side plate portion and the wall-floor joint reinforcing bar unit of the wife side are integrally formed, the strength of the structure can be sufficiently satisfied.

[Brief description of the drawings]

FIG. 1 is a partially sectional perspective view showing an intermediate block unit of one embodiment of a basement building block unit according to the present invention, and FIG. 2 is a wall-floor joint reinforcing unit of the intermediate block unit of the embodiment. FIG. 3 is a partially sectional perspective view showing a wife side block unit in one embodiment of the basement building block unit according to the present invention, and FIG.
FIG. 5 is a perspective view showing a main part of the wife-side block unit of the embodiment, and FIGS.
6 (a) to 6 (i) are perspective views respectively showing a method of constructing a basement using the basement building block unit according to the present invention, and FIG. 7 shows a connecting portion between the block units in FIG. FIG. 8 is a cross-sectional view showing a connecting portion between the block unit and the beam in FIG. 6, FIG. 9 is a plan view of a joint fitting for connecting the block units, FIG. FIG. 11 is a plan view showing a connecting hardware for connecting adjacent block units, FIG. 12 is a cross-sectional view thereof, FIG. 13 is a cross-sectional view showing a structure of a joint portion of the beam in FIG. 6, and FIG. It is sectional drawing which shows the state which mounted the house on the basement constructed as shown in FIG. DESCRIPTION OF SYMBOLS 1 ... Intermediate block unit 2 ... Bottom plate part 3 ... Side plate part 4 ... Wall reinforcing bar unit 5 ... Floor reinforcing bar unit 6 ... Wall-floor joint reinforcing bar unit 6a ... Horizontal bar , 6b ... floor joint bar, 6c ... wall joint bar, 7 ... sheath tube, 8 ... grid bar, 9 ... anchor plate, 11 ... wife side block unit, G ... basement, H ... house , 25 ... PC steel, 23, 24 ... beam, 27 ... long bolt, 28 ... insert, 29 ... connecting bolt, 31 ... fitting hardware, 30 ... connecting hardware.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) E02D 29/00 E03F 3/04 E03F 5/04 E04B 1/348 E04C 5/00 E04G 21/12 105

Claims (3)

(57) [Claims] 1. A basement building block unit for building a basement in which a floor and a side wall around the floor are formed of reinforced concrete by combining a plurality of precast concrete blocks, wherein the floor is formed. The bottom plate portion and the side plate portion forming the side wall portion are formed in a substantially U shape, and the bottom plate portion is provided with a floor reinforcing bar unit formed in a lattice shape, and the side plate portion has a grid A wall joint unit connected to the floor reinforcing unit, a wall joint unit connected to the side plate unit and the bottom plate unit, and a wall reinforcing unit. Wall-floor joint rebar unit comprising a vertical joint connected to the side joint, and a plurality of horizontal streaks connecting the horizontal joint and the vertical joint and extending to a continuous portion between the side plate and the bottom plate. Basement building blocks units, characterized in that are disposed. 2. The basement according to claim 1, wherein said wall-to-floor joint reinforcing unit is provided in advance with an insertion means through which a PC steel material for connecting each block unit is inserted. Building block unit. 3. A wedge side plate portion forming a wedge side wall portion is formed between ends of the both side plate portions, and a wall rebar unit formed in a lattice shape is formed on the wedge side plate portion. A wall-floor joint rebar unit is arranged at a portion connected to the bottom plate portion, and the wall-floor joint rebar unit connects the side plate portion and the bottom plate portion. The basement building block unit according to claim 1, wherein the block unit is formed integrally with the reinforcing bar unit.