JP2506306B2 - Form block construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing formwork blocks, and when stacking formwork blocks to construct a structure such as a wall or fence, the work of stacking formwork blocks on a construction site is reduced. Then, the construction method for shortening the construction period is provided.

[0002]

2. Description of the Related Art A large number of formwork blocks are joined vertically and horizontally with an adhesive to form a panel, the resulting panel is erected on a prepared foundation, and then a reinforcing bar is inserted into the cavity of the formwork block. Then, various methods of pouring fresh concrete and drying it are known. For example, Japanese Patent Laid-Open No. 4-30
In the 9637 gazette, as the above mold block, at least one of an upper edge and a lower edge, and at least one of a left edge and a right edge are provided with stepped recesses inside each of the front plate portion and the rear plate portion. The one is used to join the form blocks to each other by intermittently applying an adhesive to the contact parts of the form blocks adjacent to each other at the time of paneling, and the front plate part of each adjacent form block and A groove is formed by each of the stepped recesses on each inner side of the rear plate portion, and steel bars in the height direction are inserted at a plurality of positions of the obtained panel, and both ends thereof are connected to the front plate portion of the form block and It describes a method of tightening and fixing to a backing plate that straddles the back plate portion.

[0003]

However, in the above-mentioned conventional method, when forming the mold block into a panel, only a large number of mold blocks are bonded with an adhesive, and the reinforcing bars are not arranged at that time. However, there is a problem in that it is necessary to arrange the vertical stirrup and the horizontal stirrup after being dropped on the construction site, and labor saving of the site work is insufficient, and moreover, the intersection of the vertical streak and the horizontal streak cannot be joined. In addition, since steel bars in the height direction were inserted into the panel at a plurality of locations, and both ends thereof were clamped and fixed to the front plate portion and the rear plate portion of the formwork block, that is, the backing plates that straddle the front and rear face shells. After dropping the panel to the construction site, even if you can remove the upper backing plate, you cannot remove the lower backing plate and if you leave this lower backing plate as it is, rust will occur, There was a problem such as flooding from this part.

According to the present invention, it is not necessary to insert a reinforcing bar into a panel composed of a form block at a construction site, which enables further labor saving of the site work, and after the panel has been lowered to the construction site, a backing plate is used. Does not remain under the panel, and thus provides a construction method in which rust does not occur and water does not enter.

[0005]

A method of constructing a form block according to the present invention is such that, when a large number of form blocks are joined vertically and horizontally by a paste-like adhesive to form a panel, vertical and horizontal stripes are formed in the panel. Are arranged at predetermined intervals, respectively, and the intersecting portions of the above-mentioned vertical stripes and horizontal stripes are joined, and a flexible band made of synthetic resin is longitudinally wound and fastened at a plurality of locations of the obtained panel, The above panel is hung by locking the upper end of the fastened band, and this panel is lowered on the pre-prepared foundation so that the lower end of the vertical bar is close to the bar projecting from the foundation, and then the lower end of the panel. After removing the fastening band sandwiched between the foundation and the foundation, the cavity of the panel is filled with ready-mixed concrete.

The above-mentioned vertical stripes have a length longer than the panel height so that the upper end thereof projects above the panel by 40 times or more the vertical stripe diameter, while the horizontal stripes have a length longer than the width of the panel. And project both ends to the left and right of the panel by more than 20 times the horizontal bar diameter, and when the panels are connected vertically and horizontally, the vertical bar and horizontal bar have a diameter of 40 mm.
It is preferable that they are doubled or more. Further, in the above-mentioned form block, the front and rear face shells are formed to have flat upper and lower surfaces, stepped recesses are provided on at least one of an upper edge and a lower edge inside the face shell, and Use the left and right end faces that have uneven ridges in the height direction that fit with each other, and use the above stepped recesses to form concave grooves inside the face shell of each adjacent formwork block when making a panel Preferably.

Further, in the above-mentioned form block, the uneven ridges in the height direction on the left and right end faces of the face shell are formed point-symmetrically with respect to the center of the form block and asymmetrically with respect to the center line in the width direction. Is preferably provided. The paste adhesive is a reaction-curable polysulfide-based adhesive,
Modified silicone type, polyurethane type, dry-curing acrylic type, solvent type SBR and IIR are preferable,
The application is preferably performed intermittently.

[0008]

[Operation] When arranging the form blocks manufactured in the form block manufacturing plant in the vertical and horizontal directions to form a panel, the vertical streaks and the horizontal streaks are arranged at the same time, and the intersections of the vertical streaks and the horizontal streaks are joined by binding or the like. , When the panel was transported to the construction site and stood upright, when the flexible band made of synthetic resin was removed, it was possible to immediately pour the fresh concrete, which made it possible to completely remove the band used for fastening the panel. The structure is obtained, and there is no need to insert the reinforcing bar at the construction site as in the past. Also, the vertical and horizontal lines are joined at the intersection,
Since the horizontal stripes are locked to the web shells that connect the front and rear face shells of the form block, the vertical stripes and the horizontal stripes do not fall off when the panel is transported, and especially the horizontal stripes are locked on the upper surface of the web shell. When the groove is provided, the positioning becomes easy, and the positional deviation hardly occurs.

Since the above band is flexible, when the panel is fastened and suspended, the portion contacting the corner of the form block is not broken and cut, and the panel is placed on the foundation. When lowered, the part sandwiched under the panel can be easily pulled out by pulling the part that is outside. In particular, when a polyester band is used, the band does not stretch so that the fastening does not become loose when the panel is hung.

[0010]

EXAMPLE As shown in FIG. 1, 30 form blocks 20 (height 20 cm, width 40 cm, thickness 20 cm) 20 were arranged in three rows 10
A panel 10 having a height of 2 m and a width of 1.2 m was manufactured by stacking potatoes on the steps. As shown in FIGS. 2 and 3, the above mold block 20 has a rectangular front face shell 21 and a rear face shell 22 connected by two web shells 31 on the left and right, and on both upper and lower surfaces of the web shell 31. A U-shaped recess is formed so that the cavities on the outside and between the left and right web shells 31, 31 communicate with the upper and lower recesses of the web shell 31.

The upper and lower end faces of the front face shell 21 and the rear face shell 22 are formed flat, and the inner faces of the face shells 21 and 22 are arranged along the lower edges thereof (see FIG. 3). Stepped recesses 23 and 24 are formed respectively, and stepped recesses 25 and 26 are formed along the left and right edges (see FIG. 2), respectively. Therefore, when the formwork blocks 20 are stacked, a lateral groove 27 is formed on the inner surfaces of the upper and lower adjacent portions of the front face shells 21, 21 and a vertical groove 28 is formed on the inner surfaces of the right and left adjacent portions. To be done. Further, lateral recessed grooves 29 are formed on the inner surfaces of the upper and lower adjacent parts of the rear face shells 22, 22, and vertical recessed grooves 30 are formed on the inner surfaces of the left and right adjacent parts.

Further, as shown in FIG. 2, the uneven ridges in the height direction which are fitted to the left and right end surfaces of the front face shell 21 and the rear face shell 22 are symmetrical with respect to the center M of the form block. , And asymmetrically with respect to the center line N in the width direction. That is, the front face shell 21
On the left end and the right end of the rear face shell 22 of
Each of the ridges protruding outward in the thickness direction and recessed on the inside, and the right end of the front face shell 21 and the left end of the rear face shell 22 each recessed on the outside in the thickness direction and protruding on the inside have a height. The ridges are formed in a direction so that the former ridges and the latter ridges engage with each other.

On the other hand, the left and right web shells 3 connecting the front face shell 21 and the rear face shell 22.
Reference numerals 1 and 31 (see FIG. 3) are provided with concave portions 32 and 33, which are largely recessed on the upper and lower surfaces, respectively, and the concave portions 32 and 33 allow the hollow portions on both sides of the web shell 31 to communicate with each other. And
Grooves 32a for supporting horizontal stripes are formed on the bottoms of the recesses 32, 33.
33a are formed in front and rear two rows, respectively.

The above mold block 20 is molded in a molding factory and then assembled on a flat plate to form a panel. In this case, a cartridge in which a pasty adhesive S made of a solvent type SBR is filled on the upper, lower, left and right end surfaces of one of the face shells 21, 22 of the contact portion of the adjacent mold blocks 20, 20 with the adhesive S is filled. 5mm from the tip of
Panel 10 is manufactured by extruding in a broken line shape (one short line having a length of 150 mm and a gap of 50 mm) through the nozzle of FIG. It should be noted that FIG. 1 shows a panel 10 made of potatoes, and FIG. 5 shows a panel 1 made of zigzag.
Indicates 0A.

While the mold block 20 is being joined as described above, one is provided in each cavity surrounded by the front and rear face shells 21, 22 and the left and right web shells 31, 31.
The vertical stripe 11 having a diameter of 3 mm is inserted, and the horizontal stripe 12 having a diameter of 13 mm is fitted into the groove 32a for supporting the horizontal stripe on the upper side of the web shell 31, and the intersection of the vertical stripe 11 and the horizontal stripe 12 is joined by binding. In this case, the longitudinal streak 11 has a length of 2.6 m, and one end thereof is located above the panel 10 by 0.6 m.
It is projected (see FIG. 1). Also, the length of the horizontal stripe is 1.8.
m, and both ends on both left and right sides of the panel 10.
When the panel 10 is extended upward and leftward and rightward, the overlapping length of the longitudinal muscles 11 and the transverse muscles 12 is set to 40 times or more the diameter of the reinforcing bar so that the joining can be omitted. 2 and 3, the front and rear grooves 32 for supporting the horizontal stripes are shown.
Although the horizontal streak 12 is arranged in the groove 32a on the rear side among a and 32a, the groove 32a on the front side may be used or may be arranged on both front and rear sides.

As shown in FIG. 1, the obtained panel 10 has a width of 32 mm made of polyester in two places on the right and left sides,
A band 13 having a thickness of 0.9 mm is vertically wound and tightened, and the upper portion is fused. Next, the panel 10 is loaded on a truck and carried to a target construction site, and the left and right bands 13 and 1 are provided.
Connect the nylon sling 14 to 3, and hang the nylon sling 14 by hanging it on a hook (not shown) of the hoist, and on the foundation 15 prepared in advance,
The vertical bar 11 having a height of about 0.6 m protruding from the foundation 15 and the vertical bar 11 are lowered so as to be close to each other (see FIG. 4).
), Then cut the band 13 above,
After extracting the part sandwiched underneath, fresh concrete is poured into the cavity of the panel 10 and dried.

Form block 20 shown in FIGS. 2 and 3 above.
Since the front face shell 21 and the rear face shell 22 are provided with the protrusions and recesses in the height direction which are fitted to the left and right end faces of the front face shell 21 and the rear face shell 22, they can be easily positioned during the assembling.
Since the above-mentioned concavo-convex stripes are formed point-symmetrically with respect to the center M of the formwork block and asymmetrically with respect to the center line N in the width direction, the top and bottom of the formwork block are erroneous when assembled. As long as there is no mistake, you can make a mistake in the front and back.

Since the upper and lower end surfaces of the front face shell 21 and the rear face shell 22 are formed as flat surfaces that do not mesh with each other, the panels can be easily joined together even when they are stacked in a zigzag manner as shown in FIG. can do. Moreover, since the step-shaped recesses 23, 24, 25, 26 are provided on the upper edge and the left and right edges on the inner surface side, and the recessed grooves 27, 28, 29, 30 are formed around the inner surface side by assembling,
When the ready-mixed concrete is made into a panel and placed on the foundation 15 and poured into it, the ready-mixed concrete flows into the grooves 27, 28, 29, and 30 to form a joint, and the joint strength between the adjacent form block 20. Will be strengthened.

[0019]

As described above, according to the present invention, it is possible to form a form block into a panel in a factory, transport it to a construction site, and stand it up to form a structure. The man-hours for loading can be significantly reduced. Moreover, when the panel is formed, the vertical and horizontal stripes are also arranged at a predetermined interval, and the intersections of the vertical and horizontal stripes are connected, and the horizontal stripes are caught on the web shell of the form block. Does not fall off, and there is no need to arrange vertical and horizontal reinforcements at the construction site, further improving the work efficiency at the construction site. In addition, since the panels are bundled with a flexible band made of synthetic resin, and the panels are hung using the flexible bands, the above bands can be easily removed after the panel is lowered to the construction site. Therefore, unlike the conventional example in which the panels are bound with the steel rod and the contact plate, the contact plate is not rusted and does not enter the structure.

In particular, the invention according to claim 2 is characterized in that the vertical streaks are projected on the panel at least 20 times the diameter, and the lateral streaks are projected on the left and right sides of the panel at least 40 times the diameter.
The overlapping length of the vertical stripes and the horizontal stripes between the adjacent panels becomes 40 times or more the diameter, so that joining by binding or the like can be omitted.

According to the third aspect of the invention, since the groove is formed inside the face shell of each adjacent form block when the panel is formed, when the concrete is poured, the above-mentioned groove is formed. The concrete groove is also filled with fresh concrete to form driving joints, and the strength of the structure is improved.

Further, in the invention as defined in claim 4, the concavo-convex stripes on the left and right end faces of the face shell are formed point-symmetrically with respect to the center of the mold block and asymmetrically with respect to the center line in the width direction. Therefore, even if you make a mistake in the front and back of the form block when making a panel, there will be no problem, and when staggering other existing panels side by side, the zigzag of both ends The parts can be easily engaged.

Further, according to the invention of claim 5, since the paste-like adhesive is applied intermittently, a ventilation hole is formed in the joint portion of the form block, and the air in the cavity is poured when pouring fresh concrete. Can be escaped, and therefore bubbles are not formed in the grout, and the strength of the structure is further improved.

[Brief description of drawings]

FIG. 1 is a front view of a partially crushed panel of potatoes.

FIG. 2 is a plan view of an example of a mold block used in the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a partially crushed front view of the lower portion of the panel dropped to the construction site.

FIG. 5 is a partially crushed front view of the panels stacked in a zigzag manner.

[Explanation of symbols]

 10, 10A: Panel 11: Vertical streak 12: Horizontal streak 13: Band 14: Nylon sling 15: Foundation 16: Reinforcing bar 20: Form block 21, 22: Face shell 23, 24, 25, 26: Stepped recess 27, 28, 29, 30: concave groove 31: web shell 32, 33: concave portion 32a, 33a: groove for supporting horizontal stripes S: paste adhesive

Claims (5)

(57) [Claims] 1. A vertical streak and a horizontal streak are arranged at predetermined intervals in the panel when a large number of mold blocks are joined vertically and horizontally with a paste adhesive to form a panel, and the vertical streak and the vertical streak are formed. Join the intersections of the horizontal streaks, wrap and fasten a flexible band made of synthetic resin in the longitudinal direction at multiple points of the obtained panel, and lock the upper end of the fastened band to secure the above panel. Suspend, lower this panel on the prepared foundation so that the lower end of the vertical bar is close to the bar projecting from the foundation, and then remove the fastening band sandwiched between the lower end of the panel and the foundation. A method of constructing a form block, comprising filling the hollow portion of the panel with ready-mixed concrete. 2. A vertical streak longer than the height of the panel has an upper end projecting 40 times or more the vertical streak diameter above the panel, and a horizontal streak longer than the width of the panel has both ends on the left and right sides of the panel with a horizontal streak diameter of 2
The method for constructing a mold block according to claim 1, wherein the mold blocks are arranged so as to project 0 times or more. 3. An upper surface and a lower surface of the front and rear face shells are formed flat, stepped recesses are provided on at least one of an upper edge and a lower edge inside the face shell, and left and right end surfaces of the face shell. Forming a concave block is formed by the stepped concave portion inside the face shell of each adjacent mold block at the time of paneling, using a mold block in which height-relief ridges are formed that fit with each other. The method for constructing a form block according to item 2. 4. The ridges and grooves in the height direction on the left and right end faces of the face shell are formed point-symmetrically with respect to the center of the form block and asymmetrically with respect to the center line in the width direction. Construction method of the described form block. 5. The method of constructing a form block according to claim 1, wherein the paste adhesive is applied intermittently.