JPS6032210Y2 - Building foundation structure - Google Patents

Description

[Detailed description of the invention] This invention is particularly related to the structure of cloth foundations for wooden buildings and the like.

When constructing this type of cloth foundation, a method was adopted in which a predetermined number of reinforcing bars were placed inside the foundation according to conventional methods, and the reinforcement was buried in concrete.

However, this method requires a lot of effort and time to arrange the reinforcement, and there are also disadvantages such as unevenness in construction, which makes it impossible to expect uniform strength.

This invention was devised to solve the above-mentioned problems of the conventional method, and its purpose is to provide a foundation that can be expected to save labor on site and has uniform strength.

The following will explain the embodiments shown in the drawings.

Reference numeral 1 indicates a metal lath made of a galvanized iron plate or the like buried in concrete.Metal lath 1 is relatively thick, and although an expanded metal lath is shown in the example, it is not limited to this and may be a punched metal lath. .

This metal lath 1 is formed into a band shape with a height corresponding to the rise of the foundation to be buried, and the upper and lower edges are wide in the band shape and form a cross-sectional waveform with two peaks parallel to the length direction. Angled portions 2, 2 are formed, and a single angled portion 3 is also formed at the center in the height direction.

Straight support pieces 4 are provided at regular intervals in parallel to the height direction, spanning between the upper and lower angle-shaped parts 2, 2 and the central angle-shaped part 3, forming a rectangular mesh. It is what it is.

FIG. 3 shows a second embodiment of the metal lath 1. The upper and lower edges of the metal lath 1 are flat strips 5 having a constant width and parallel to the length direction, and the outer edges of the strips are hooked. The reinforcing bar support portion 6 is bent into a shape.

Further, angle-shaped support pieces 7 are provided in the shape of a rectangular frame with a two-stage configuration spanning between the upper and lower flat strip portions 5, 5 to form a rectangular mesh.

A required number of reinforcing bars 8 running in the longitudinal direction are fitted inside the reinforcing bar support portion 6.

The metal lath 1 described above is buried vertically along the longitudinal direction of the foundation at the center of its width.

Formwork A is used to form the rising part during construction.

A metal lath 1 is arranged vertically at the center in the width direction between A, and in the first embodiment, the upper and lower angular parts 2 of the metal lath 1, and in the second embodiment, the upper and lower strip parts 5. Attach the ribbon 9 for holding the lath.

As shown in FIG. 5, the lath retaining ribbon 9 to be attached to the first embodiment is made of an elongated plate-like body made of synthetic resin, and has two lath retaining protrusions 10 that are approximately in close contact with each other in the center in the longitudinal direction. is provided protrudingly, and arm pieces 1 of the same length are provided on both sides of this locking protrusion 10.
1 and 11 are extended oppositely, and the length dimension between both ends of the arm pieces 11 and 11 is slightly longer than the width dimension of the foundation.

The ends of the arm pieces 11 are further bent at right angles in opposite directions to form holding pieces 12.

Furthermore, a large number of small protrusions 12a are provided on the outer surface of the holding piece 12 to generate friction.

Also, the lath holding ribbon 13 attached to the second embodiment is the sixth one.
As shown in the figure, a locking groove 14 having a substantially circular cross section is provided at the center in the length direction, and this locking groove 14 is open on one side, and the openings are pressed on both sides of this opening. Ribbed protrusions 15 are provided for convenience in fitting the upper and lower ends of the expanded metal lath 1.
The other arm pieces 11, holding pieces 12, and small projections 12a are the same as the lath holding ribbon 9 of the first embodiment.

By fitting the above lath holding ribbons 9 or 13 to the upper and lower edges of the metal lath 1 so as to be perpendicular to the length direction, the formwork A for forming the rising part of the foundation,
The arm pieces 11, 11 are slightly bent over the space A, and the holding piece 12 portion is the mold material A.

The metal lath 1 is tightly attached to the formwork A by this lath holding ribbon 9 or 13.

It is positioned at the center in the width direction between A.

After that, concrete 16 is poured into formworks A and A. In this case, since the small projections 12a of the holding pieces 12 have a large friction against the formwork A, a lath holding ribbon is used during concrete pouring. There is no risk that 9 or 13 will come off from formwork A.

Further, in some cases, the metal lath 1 may be buried horizontally in the lower end base portion of the foundation (not shown).

In addition, when extending the metal laths 1, the ends of each metal lath 1 are overlapped for the required length, and in the first embodiment, the corrugated portion 1 of the lip 17 is formed as shown in FIG.
7a, and in the second embodiment, the reinforcing bar support part 6 is clamped and connected at the round groove 18a of the lip 18, as shown in FIG.

This idea consists of the above-mentioned configuration, and all that is required is to transport the metal lath manufactured in advance at the factory to the site and position it there, so it does not require any special skills and can be easily and quickly done by anyone. The work can be done quickly, and the construction period can be drastically shortened.

However, since strict quality control can be carried out at the factory, there is no variation in construction compared to conventional on-site reinforcement.
You can always expect uniform strength.

In addition, the lath is held in place by a lath retaining ribbon, and this lath retaining ribbon is installed across the formwork, so there is no risk of the metal lath moving due to various impacts during construction, and the metal lath is always held in the width direction of the fabric foundation. Concrete can be placed with it placed in the center.

Furthermore, the metal lath used has wide upper and lower edges and is sufficiently reinforced, and the upper and lower edges are connected by vertical supports, so it is suitable for both horizontal and shearing blades. It is durable, and can be easily bent with a hammer in fabric foundations that have many bends, such as in ordinary houses, so there is no need to worry about the difficulty of arranging reinforcement at bends as in the past, making it a highly practical idea.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partial front view of the metal lath, Fig. 2 is a partial vertical sectional view thereof, and Fig. 3 is a partial front view of the metal lath.
The figure is a partial front view of the second embodiment of the metal lath, Figure 4 is a partial vertical side view thereof, and Figures 5 and 6 are the installation of the lath holding ribbon in the first embodiment and the second embodiment, respectively. 7 and 8 are partial longitudinal sectional views showing the mounting state of the clip in the first embodiment and the second embodiment, respectively. FIG. 1... Metal lath, 2, 3... Angled part, 4... Branch piece, 5... Flat band part, 6... Reinforcement support part, 7... branch piece,
Death...Reinforcing bar, 9...Ribbon for holding the lath,
10...Protrusion for locking the lath, 11...Arm piece, 12...Holding piece, 13...Ribbon for holding the lath, 14... ...locking groove, 15...
...Rib-like protrusion, 16...Concrete, 17
．． 18...Clip.

Claims (1)

[Scope of utility model registration request] In the fabric foundation of a building with metal lath buried in the longitudinal direction, the upper and lower edges of the metal lath are formed into wide strips, and lath holding ribbons are attached to the upper and lower edges of the metal lath to fix the lath. The lath holding ribbon is formed into an elongated plate-like body, and has two lath locking protrusions protruding from the center of the ribbon in close contact with each other, and arm pieces are provided on both sides of the locking protrusions.
The ends of the arm pieces are bent at right angles in opposite directions, and the upper and lower edges of the metal lath are held between the lath locking protrusions and attached to the foundation structure of a building.