JP2801823B2 - Jaw-shaped formwork for embedding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded formwork material used when constructing a cement or concrete building, and in particular, a portion which becomes an overhang at the upper end of a rooftop rising portion (parapet) of a flat roof type. The present invention relates to an improved embedded jaw-shaped form member having a jaw-shaped or similar shape.

[0002]

2. Description of the Related Art When constructing a concrete building, generally, after arranging a steel frame or a reinforcing bar, a wooden plywood form material (so-called concrete panel) is used for pouring concrete. This step is performed by covering the outer periphery of the streak, forming a form so as to have a predetermined shape, then pouring and hardening concrete, and integrating with the steel frame and the reinforcing bar, and then removing the concrete panel.

Although the surface of a concrete building is often flat, it naturally includes a curved surface, an uneven surface, a spherical surface, or a combination thereof, and assembles a form according to the surface shape. It is unavoidable that need arises. On the other hand, a concrete panel used as a formwork material is 90 cm × 180 cm or 10 cm.
Since it is a plywood of 0 cm × 200 cm, it can cope with a flat surface, large irregularities, or a curved surface having a large curvature to some extent, but it is difficult to assemble a mold having a complicated shape such as a curved surface having a small curvature and small irregularities. It is well known that formworkers struggle with cutting concrete panels or combining other materials.

In recent years, in particular, the number of skilled workers as well as craftsmen has been decreasing, and the number of man-hours has increased, and the rationalization of formwork to be discarded at one time has become an important issue. Further, in general, this concrete panel is a plywood itself mainly composed of South Sea wood, and can be used several times when used without cutting, but once cut and used as a formwork, it is discarded once. I have. Since this has led to deforestation in southern countries, reducing the use of concrete panels to protect the environment is also an important issue.

Recently, a synthetic resin form material has been proposed in place of a plywood-based concrete panel, and a part of the form material seems to be used. However, this form material also has a complicated shape. It is not easy to assemble, and it is necessary to remove the formwork after the concrete is consolidated as in the case of conventional concrete panels. It seems that it is not widely used because of its higher cost than concrete panels.

[0006] Instead of a wooden concrete panel or a synthetic resin frame material, a mold material made of cement or concrete has been newly proposed. Since this form material is the same material as the building material, the form material itself can be embedded and used as part of the building structure, so the work of removing the form can be omitted, and the form removal It is possible to omit the space for storing and storing the formwork materials and the man-hours for disposal, and it is promising as an extremely advantageous formwork material in the future. However, this formwork is made of a concrete plate and can be used effectively as a formwork such as a flat surface, large irregularities, or a curved surface with a large curvature. However, it cannot be used as a mold material having a complicated shape.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to a parapet part which is almost always provided on a flat roof of a building made of cement or concrete in order to prevent rainwater from entering the inside of the structure from the outer periphery of the roof. Overhangs (chins) at the upper end of the roof, or chins on a rooftop building necessary for cooling towers and lighting provided on the roof of a flat roof, and park benches, both inside and outside the building With regard to the jaw-shaped formwork for embedding of jaws, etc., skilled formworkers are not required, and even unskilled people can form the formwork in a short time, and also reduce the man-hours for removing the formwork material, It is not necessary to dispose of the formwork material, and an object of the invention is to develop a more excellent formwork material.

[0008]

According to a first aspect of the present invention, there is provided an embedding jaw-shaped form material having an umbrella portion having a surface provided substantially horizontally, and a desired angle upward from one end of the umbrella portion. The upper rising surface portion and / or the lower lowering surface portion which descends substantially vertically downward from the other end of the umbrella portion is a jaw-like embedding form material integrally formed of cement or concrete. In addition, a sheet protection wall groove and / or a drain portion and / or a groove for a mold fixing material are provided on the lower surface of the umbrella portion.

According to a second aspect of the present invention, there is provided an embedding jaw-shaped frame member having an umbrella portion having a surface provided substantially horizontally, and an upper portion rising upward from one end of the umbrella portion at a desired angle. The rising surface portion and / or the lower falling surface portion which is lowered substantially vertically downward from the other end of the umbrella portion is a jaw-shaped embedding form fixing material integrally formed of cement or concrete, A locking projection is provided on the upper rising surface portion and / or the umbrella portion and / or the lower lowering surface portion.

[0010] The formwork material of the present invention has a rising portion on the roof or the like, and protects the waterproofing treatment of the building after the waterproofing treatment, and also embeds a jaw-like formwork material for constructing the rising portion. In the factory, a formwork material is manufactured in advance in the shape of the jaw of the building at the factory, and the formwork is used as a formwork to form a frame on the jaw of the building, and concrete is poured, and the concrete is hardened and the building is hardened. It is built as a part of the structural body. Therefore, the material may be cement-based (without mixing coarse aggregate) or concrete-based (with coarse aggregate such as gravel), and the form, strength, durability and fire resistance The material is selected in consideration of the properties, waterproofness, etc., but since recent trends tend to favor lightweight materials, Portland cement,
Form material from cement mortar mixed with appropriate amounts of GRC cement, silica sand, lightweight aggregate, organic fiber, inorganic fiber, fluidizing agent, waterproofing agent, etc. is lightweight, suitable for extrusion molding, preferable raw material composition It is.

The embedding jaw-shaped formwork material of the present invention is used as a formwork material, and after the concrete is hardened, it is buried as it is and becomes a part of the structure, so that it only has a function as a formwork material. However, it is necessary that the material conforms to the surface condition and shape of the structure even if it may undergo a subsequent finishing step.

Hereinafter, the jaw-shaped formwork for embedding of the present invention will be described with reference to the drawings. Upper rising surface 1 shown in FIGS.
FIG. 5 shows an example of the usage state of the embedding jaw-shaped frame member 10 including the umbrella section 12 and the lower lower surface section 13, and FIG. 6 shows an example of the finished state of the structure. Generally, the rooftop of a building is covered with waterproofing, for example, a waterproof sheet 23, over the entire surface thereof in order to prevent rainwater from entering the inside of the structural body. Further, in order to prevent intrusion from the outer peripheral portion of the waterproof sheet, the outer peripheral portion of the waterproof sheet needs to be raised by 100 mm or more along a roof helicopter. Further, in order to prevent rainwater from entering from the portion where the waterproof sheet is raised, the shape in which the helicopter part of the building is covered with the umbrella part 11, that is, the jaw-shaped part, prevents the rainwater from entering.

A protection wall 22 for protecting the rising portion of the waterproof sheet 23 is provided on the front surface (roof side) of the waterproof sheet rising portion, and a protective mortar 24 or a block is provided for protecting the waterproof sheet surface. The roof is formed by laying. For this reason, it is necessary that the umbrella part 11 covers the rising part of the waterproof sheet 23 securely, and the waterproof sheet is usually 10
It stands up more than 0mm.

The upper rising surface portion 12 is generally raised almost perpendicularly to the umbrella portion 11, but it is not necessarily perpendicular to the umbrella portion 11 because it is necessary to follow the design of the structure. Also, the intersection of the umbrella surface and the upper rising surface may be angled, and may have a shape in which a curved surface or a corner is cut. The upper rising surface portion 12 serves as a form material for receiving the concrete when the concrete 20 is poured. Therefore, the rising of the upper rising surface portion corresponds to the concrete to be poured, but it is usually preferable that it is 100 mm or more.

The lower lower surface 13 is provided on the upper rising surface 12 of the umbrella 11 on the opposite side. It becomes part of the parapet after the concrete has hardened. It is desired that the lowering length of the lower lowering surface portion is at least about 100 mm. Of course, the height from the surface of the roof slab 25 (reinforced concrete) differs depending on the design of the building, and there is not necessarily any limitation. A bolt fixing hole 16 is provided in the lower surface 13 so that
It is more convenient to use bolts 16a as shown in FIG.

On the lower surface of the umbrella section 11, a waterproof sheet protective wall groove 14 and a drain section 15 can be provided as required.
The draining section 15 is for preventing rainwater from traveling along the lower surface of the umbrella section and reaching the waterproof sheet 23. The drain section 15 is not limited to the concave groove shown in FIG. It may be provided with a long protrusion in the direction. Also, the waterproof sheet protective wall groove 14 is for fixing a waterproof sheet protective wall 22 for protecting the rising portion of the waterproof sheet, and the waterproof sheet protective wall 22 is provided with concrete or cement-based plate material (such as lambda siding). Such a commercially available lightweight hollow plate may be used.) However, the present invention is not limited to this, and the size, shape, and the like can be appropriately selected so as to conform to the shape of the parapet.

The form member may be provided with a reinforcing rib 17 as shown in FIG. 4 when strength is required.
Further, when the present jaw-shaped form material is manufactured by a casting method into a mold or the like, a locking projection 18 is provided on the surface of the form material in order to strengthen the connection between the form material and the structure body. be able to. When this projection is manufactured by the extrusion method, it may be a locking ridge parallel to the extrusion direction, and its cross-sectional shape can be freely provided such as a rectangle or a mountain.

Normally, when concrete is poured on the upper part of the umbrella part 11, the concrete is received by the upper rising surface part of the formwork material. However, depending on the design of the building and the surrounding conditions, the concrete is placed on the upper part of the umbrella part. The structure may not be required to cover. In this case, the rising surface portion 12 is not necessarily required, and an embedding jaw-shaped form material having a shape without the rising surface portion as shown in FIG. 8 can be used.

The lower lower surface 13 is effective for fixing the formwork. However, the lower surface of the umbrella portion is provided with a groove 26 for the lower surface of the umbrella adjacent to the lower surface 13 so that the lower surface of the lower surface 13 can be fixed. When the fitting 27 is fitted, the parapet formwork can be made firmly. Furthermore, when the mold fixing material 27 has a high rigidity, the lower frame 13 can be omitted and the mold can be assembled in a form in which the mold fixing material 27 is fitted into the groove 26 for the mold fixing material. For example, when using a ceramic building material having a high rigidity such as lambda siding, since the fixing material is not deformed by the pressure of the concrete, the lower lower surface portion 13 is omitted, and a concave portion is formed in a part of the umbrella portion. Can be fixed by inserting a lambda siding (form fixing material 27) into the groove 26 for fixing the form. (See FIGS. 9 to 11.) The form fixing material 27 may be embedded and used, or may have a removable structure. In addition, the formwork material 19 is directly
Can also be used.

The jaw-shaped form material of the present invention is generally a long form material having a fixed cross section, but when it is used for a corner, one end of the form material is cut at an appropriate angle, for example, 45 ° as shown in FIG. Then, it may be formed into a mold material bent at a right angle by combining and joining, or it can be integrally manufactured by a method of separately forming and casting a mold. Especially using cement mortar,
Manufacturing by extrusion molding is highly productive and can be manufactured at low cost. The bolt fixing holes may be provided after extrusion and before solidification. After this, it may be simply cured at room temperature, but it is preferable to complete the hydration reaction by steam aging.

[0021]

The embedding jaw-shaped form material of the present invention is suitable for casting or extrusion at a factory in advance, without assembling a desired form by combining the form with a concrete panel or other material on site. Because it is manufactured using the composition of the cement mortar, it is possible to manufacture an inexpensive and precise mold material even in a complicated shape. In addition, since it is hardened in a factory, it is easy to produce concrete with performance superior to on-site construction such as steam aging (curing). The jaw-shaped form material of the present invention is provided with a waterproof sheet protective wall groove to reliably protect the waterproof sheet of the parapet, to prevent rainwater from entering the skeleton, and to provide a drainage portion so as to bury rainwater. Intrusion into the inside of the waterproof sheet can be prevented along the lower surface of the jaw-shaped form material for mounting, and the connection with the structural body can be made stronger by providing locking projections (or locking ridges) on the form material. In addition, when the rigidity of the form material fixing material is high and strong, the formwork fixing groove is fitted with the formwork material to assemble the formwork under the parapet, so that the assembling of the formwork under the parapet is extremely easy. Become smooth.

The most important feature of the jaw-shaped form material of the present invention is that a skilled formworker who is skilled in assembling form forms a jaw-like portion requiring a large number of man-hours, and an unskilled worker assembles a complex jaw-shaped formwork. Is to be assembled accurately in a short time, and a finished structure having uniformity can be obtained.
In addition, since the jaw-shaped form material of the present invention is an embedded type,
The work of removing the formwork and cleaning up can be omitted. Furthermore, since the amount of waste of formwork can be greatly reduced, it is a formwork that is useful for preventing deforestation and protecting the environment.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of an embedding jaw-shaped form material of the present invention.

FIG. 2 is a perspective view of the jaw-shaped form member of FIG. 1;

FIG. 3 is a cross-sectional view of a jaw-shaped form material provided with a locking ridge.

FIG. 4 is a perspective view of a jaw-shaped form member provided with reinforcing ribs.

FIG. 5 is a cross-sectional view of a jaw-shaped form material provided with locking projections and used as a form material (when concrete is poured).

FIG. 6 is a cross-sectional view showing a finished state of a construction using the jaw-shaped form material of the present invention.

FIG. 7 is a perspective view showing a connection state of a corner portion of a jaw-shaped form material.

FIG. 8 is an example of an embedding jaw-shaped form material in which an upper rising surface is omitted.

FIG. 9 is an example of an embedding jaw-shaped form material provided with a form fixing material groove.

FIG. 10 is an example of an embedding jaw-shaped form material in which a lower lower surface is omitted and a groove for a form fixing material is provided.

FIG. 11 is a cross-sectional view of an embedded jaw-shaped form material in which an upper rising surface is omitted and a groove for a form fixing material is provided.

[Description of Signs] 10 Embedding jaw-shaped frame material 11 Umbrella part 12 Upper rising surface part 13 Lower falling surface part 14 Waterproof sheet protection wall groove 15 Drainage part 16 Bolt fixing hole 16a Bolt 17 Reinforcement rib 18 Locking protrusion 19 Type Frame material 20 Concrete 21 Parapet 22 Waterproof sheet protection wall 23 Rooftop waterproof sheet 24 Protective mortar 25 Slab (reinforced concrete) 26 Groove for formwork fixing material 27 Formwork material fixing material

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takaya Inoue 1-13-9 Shiba-Daimon, Minato-ku, Tokyo Showa Denko KK (72) Inventor Yoshihiko Abiko 3-4-4 Iidabashi, Chiyoda-ku, Tokyo Jess Co., Ltd. (56) References JP-U 4-69534 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04B 1/16 E04D 11/00

Claims (2)

(57) [Claims] 1. An umbrella portion having a surface provided substantially horizontally, an upper rising surface portion rising from one end of the umbrella upward at a desired angle and / or a lower portion from the other end of the umbrella portion. A lower part of the lower surface, which is substantially vertically lowered, is a jaw-shaped embedding form material integrally formed of cement or concrete, and a sheet protection wall groove and / or a drainage part and / or Alternatively, an embedding jaw-shaped frame member provided with a groove for a frame fixing member. 2. An umbrella portion having a surface provided substantially horizontally, and an upper rising surface portion rising from one end of the umbrella upward at a desired angle and / or a lower portion from the other end of the umbrella portion. A lower lower surface portion substantially vertically lowered to a jaw-like formwork fixing material integrally formed of cement or concrete, wherein the upper rising surface portion and / or the umbrella portion and / or the lower portion A jaw-shaped formwork material for embedding, wherein a locking projection is provided on a descending surface.