JP6616629B2 - Grating mounting structure and method - Google Patents

Description

  The present invention relates to a grating mounting structure and a mounting method for providing a drainage groove in a concrete slab in an apartment house, for example, and more particularly to a grating mounting structure and a mounting method for improving the efficiency of construction after placing concrete. is there.

  Conventionally, the structure of drain grooves in buildings and the mounting structure of gratings have been devised in terms of hygiene and construction.

  For example, the width of the opening part of the drainage groove 2 is formed to be equal to or wider than the bottom part 3 or the inner diameter, so that dirt inside the drainage groove can be found and cleaned easily, and the support for supporting the drainage groove is provided. The idea (for example, refer patent document 1) which adjusts so that the upper end of this drainage unit may become flush with the floor surface with the height adjustment bolt 10 provided in the member 9 is proposed.

  In addition, the grating frames 4 and 4 are welded and fixed above the pair of precast concrete blocks 2 and 2 forming the drainage grooves, and cinder concrete is cast to a predetermined height on the outer periphery of the precast concrete block and the grating frame. The idea to set (refer patent document 2) is proposed.

JP 2005-307473 A JP 2006-169913 A

  However, in the above-mentioned Patent Document 1, the drainage groove 2 is fixed, and in Patent Document 2, the pair of precast concrete blocks 2 and 2 are fixed, and are not suitable for a housing complex constructed with concrete slabs. That is, in such an apartment house, the drainage groove is provided in the concrete slab. Therefore, in the idea of Patent Documents 1 and 2, the drainage groove 2 and the pair of precast concrete blocks 2 and 2 must be embedded in the concrete slab. In other words, useless facilities and construction are generated.

  Generally, when installing grating in an elevator hall, etc. in an apartment house, a predetermined notch form is provided before placing concrete, and the notch in the slab after this notch is removed. The grating frame was fixed to the concrete by welding.

  However, not only is it time and effort required to remove the notch mold, but it is also necessary to cure the part where the notch mold was present with veneer or the like. Moreover, it was difficult to divert the removed notch form when attaching another grating. Furthermore, the fixing of the grating frame could not be done by a specific worker (for example, blacksmith). Also, after fixing the grating frame, it was possible for a specific worker (such as a plasterer) to reclaim the surplus space in the notched portion. And since the conventional grating frame and the notch formwork were not standardized in width, length, etc., they were manufactured every construction.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a grating mounting structure and a mounting method capable of easily constructing a drainage groove for a concrete slab without requiring an extra facility, a tool, and a specific worker.

  In order to solve the above problems, the feature of the mounting structure and mounting method of the grating according to the present invention is that the concrete is cast with the grating frame held at a predetermined height from the slab mold, and the concrete can be reused. It is to form a groove on the surface.

That is, the present invention provides a grating mounting structure in an apartment house in which a slab form is used for placing concrete, a grating frame in which a pair of angle members are formed to face each other with a predetermined width, and the grating frame at a predetermined height. A grating frame supporting means for supporting, and a semi-cylindrical groove mold frame having a flange portion that forms a portion wider than a predetermined width of the pair of angle members, and the grating frame supporting means before placing concrete The lower end of the slab is fixed to the slab formwork, and the groove formwork is installed away from the ground without being fixed by hooking the flange portion on the pair of angle members from above , and a concrete groove is formed after placing the concrete. the groove formwork is removed, the grating is attached to the pair of angle members.

Further, according to the present invention, in a mounting method of a grating in an apartment house in which a slab form is used for placing concrete, a grating frame in which a pair of angle members are formed to face each other with a predetermined width before placing the concrete has a predetermined height. A semi-cylindrical groove mold frame having a flange portion that forms a portion wider than a predetermined width of the pair of angle members is fixed to the lower end of the grating frame support means supported by the slab mold frame. The flange portion is not fixed by hooking it from above, and is placed away from the ground. After placing the concrete, the groove mold is removed to form a concrete groove, and the grating is attached to the pair of angle members.

  Here, “a housing complex in which slab formwork is used for placing concrete” means that, for example, in a reinforced concrete structure housing, a wooden slab formwork is assembled through processes such as inking and laying, and so on. Shows the construction of walls and floors by pouring concrete into a slab formwork.

  “Grating” refers to a lid made of a steel material assembled in a grid pattern for drainage grooves for surface drainage in indoor passages, outdoor roads, and the like. The type of the grating is preferably one that matches the shape of the grating frame or drainage groove, for example, a rectangular grating main body or one having angle members or plate-like protrusions attached to both sides in the longitudinal direction of the grating main body. Examples of the material for the grating include steel, stainless steel (SUS), FRP (Fiber Reinforced Plastics), and synthetic rubber.

  The “grating frame” refers to a frame that supports the grating over the drainage groove, and corresponds to, for example, a pair of long angle members that are opposed to each other with a predetermined width. There is no limitation on the scale of the angle material and the predetermined width between the pair of angle materials.

  “Grating frame support means” means that the outer periphery of the grating frame is placed around the concrete and supports the grating frame to a predetermined height until it hardens. For example, a predetermined angle material is bolted to the upper end of a rod-shaped separator. The one that can be slid by the fixing member is applicable.

  The “groove formwork” refers to a half cylinder that forms a drainage groove having a predetermined depth and a predetermined width with respect to concrete to be placed. The lateral end surface of the grooved frame corresponds to a shape in which the opening side of the semi-cylindrical shape has a wide portion such as an arc shape or a trapezoidal shape. The material of the groove form corresponds to, for example, steel or stainless steel (SUS). There is no limitation on the width and length of the groove form, and it may be standardized (for example, width: 100 mm, length: 900 mm or 1800 mm).

  With the grating mounting structure and method according to the present invention, in an apartment house where a slab formwork is used for placing concrete, not only can the efficiency of construction be improved, but also the equipment and tools can be reused. Reduction is realized. That is, since the grating frame is supported by the grating frame support means, it is possible to place concrete, and the conventional plastering repair (including welding fixing etc.) becomes unnecessary. Further, if the groove mold has a predetermined rigidity, the groove mold can be easily removed after placing the concrete, so that it can be reused when other gratings are attached, and the accuracy of the grooves can be improved.

It is a perspective view which shows the outline | summary of a grating mounting structure. It is a figure which shows the flow of a grating attachment construction method.

  Hereinafter, a grating mounting structure and mounting method according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

As shown in FIG. 1, in a grating mounting structure in an apartment house where a wooden slab formwork is used for placing concrete, a grating frame 1 in which a pair of angle members 11 and 11 are formed facing each other with a predetermined width; Grating frame support means 2 for supporting the grating frame at a predetermined height, and a semi-cylindrical groove form frame 3 having a portion wider than the width I of the pair of angle members, before placing concrete, The lower end of the grating frame support means is fixed to the slab mold S, the groove mold is installed on the pair of angle members from above, and after placing the concrete, the groove mold forming the concrete groove is removed, The grating G may be attached to the pair of angle members.
The wooden slab formwork may be a veneer.

  Next, each member forming the grating mounting structure in one embodiment of the present invention will be described with reference to FIG.

In the grating frame 1, one plate portion 11a of the L-shaped angle member 11 is on the lower side, and the one plate portion is positioned on the inner side, and is arranged in parallel with a width I as a pair of angle members 11, 11. It's okay. The width I may be such that it coincides with the wide portion on the opening side of the grooved frame 3. Note that the pair of angle members 11, 11 may be formed by connecting a pair of angle members across a predetermined jig. There is no limitation on the shape, size and material of the angle member 11.

The grating frame support means 2 may be arranged symmetrically on both sides in the longitudinal direction of the grating frame 1 at predetermined intervals. The grating frame support means 2 may include a separator 21, an L-shaped angle member 22, and a bolt 23. Then, one plate portion 22a of the angle member 22 is positioned on the lower side, and the upper end of the separator 21 is inserted into a through hole provided in the one plate portion, and the separator and the angle member are fixed with bolts 23. Also good. Furthermore, the lower end of the separator 21 may be inserted into the slab formwork S. Further, the other plate portion 22b of the angle member 22 and the other plate portion 11b of the angle member 11 constituting the grating frame 1 may be fixed by welding or the like.
In addition, there is no limitation in the dimension or material of the separator 21, the angle member 22, and the bolt 23.

The groove form frame 3 may be configured by an elongated half cylinder 31 having a trapezoidal lateral end surface and flange portions 32 and 32 extending outward from both upper ends on the opening side. The upper end of the half cylinder 31 on the opening side may have a width substantially equal to the width I of the pair of angle members 11, 11. When the groove frame 3 is inserted into the width I from above the pair of angle members 11, 11, the flange portions 32, 32 may be caught on one plate portion 11 a, 11 a of the pair of angle members.
In addition, there is no limitation in the dimension or material of the groove form 3. In addition to the flange portions 32, 32, any shape may be used as long as the groove mold 3 is not caught and dropped between the pair of angle members 11, 11. A reinforcing material that prevents deformation of the frame when placing concrete may be provided inside the grooved frame 3.

  In a state where the grating frame 1 is supported by the grating frame support means 2, the height from the slab mold S to the upper end of the other plate portion 11b of the angle member 11 is set to a height H, and the concrete C is driven to this height.

  In addition, as shown in FIG. 2, in the mounting method of the grating in the apartment house where the slab formwork is used for the concrete placement, the pair of angle members 11 and 11 are formed to face each other with the width I before the concrete placement. The lower end of the grating frame supporting means 2 for supporting the grating frame 1 at a height H is fixed to the slab mold S, and the semi-cylindrical groove mold 3 having a portion wider than the width of the pair of angle members is The pair of angle members may be installed from above, and after placing the concrete, the groove form may be removed to form a concrete groove, and the grating G may be attached to the pair of angle members.

  Next, details of the mounting method of the grating in one embodiment of the present invention will be described with reference to FIG. It is assumed that the grating frame 1 is attached to the grating frame support means 2 in advance.

First, as shown in FIG. 2A, the lower end of the separator 21 of the grating frame support means 2 to which the grating frame 1 is attached may be fixed to the slab mold S. Thereby, the upper end of the other plate portion 11b of the angle member 11 constituting the grating frame has a height H, and the grating frame may be supported at this height.
In addition, when changing the height H, you may adjust the height of the separator 21 and the angle material 22 of the grating frame support means 2.

  Next, as shown in FIG. 2 (b), before placing the concrete, the half cylinder 31 of the groove form 3 is inserted into the width I of the pair of angle members 11, 11 from above, and the flange portion wider than this width. 32 and 32 may be hooked on one of the plate portions 11a and 11a of the angle members 11 and 11. Thereby, the groove form 3 can be easily removed after concrete placement.

  Next, as shown in FIG. 2C, concrete C may be placed from the slab formwork S to the height H. At this time, the grating frame support means 2 may be completely embedded in the concrete C. On the other hand, the concrete C does not have to be placed inside the grating frame 1 and the grooved frame 3. Thereby, the installation location of a grating and a drainage ditch can be formed. After this, you may wait until the concrete C hardens.

  Finally, as shown in FIG. 2D, after the concrete C is hardened, the groove mold 3 may be removed first. At this time, if the groove mold 3 is a material having rigidity such as stainless steel, it can be reused when other grating grooves are formed, and the accuracy of the groove depth and height can be improved. Then, the grating G is installed in the grating frame 1. At this time, if the rubber material coverings P, P are provided at the inner corners of the pair of angle members 11, 11 of the grating frame 1, rattling of the grating G can be prevented.

  In this way, with the grating mounting method described above, in an apartment house where a slab formwork is used for concrete placement, not only can the efficiency of construction be improved, but also the reuse of equipment and tools is possible, so the construction cost is reduced. Reduction is realized. That is, since the grating frame 1 is supported by the grating frame support means 2, the concrete frame C can be placed together with the grating frame support means, and the conventional plastering repair (including welding and fixing) becomes unnecessary. Furthermore, if the groove mold 3 has a predetermined rigidity, it is easy to remove the groove mold after the concrete C is placed, so that it can be reused when other gratings are attached, and the accuracy of the groove can be improved. it can.

  The mounting structure and mounting method of the grating according to the present invention can be widely used not only in housing complexes but also in industries related to individual houses, corporate buildings, medical facilities, nursing care facilities, and the like.

DESCRIPTION OF SYMBOLS 1 Grating frame 11 Angle material 2 Grating frame support means 3 Groove frame I Width between angle materials of the grating frame S Slab frame G Grating

Claims (2)

In the mounting structure of grating in apartment houses where slab formwork is used for concrete placement,
A grating frame formed by a pair of angle members facing each other with a predetermined width;
A grating frame support means for supporting the grating frame at a predetermined height;
A semi-cylindrical groove mold having a flange portion that forms a portion wider than a predetermined width of the pair of angle members ,
Before placing concrete, the lower end of the grating frame support means is fixed to the slab mold frame, and the groove mold frame is set apart from the ground without being fixed by hooking the flange portion on the pair of angle members from above. ,
The concrete after casting, the groove mold forming a concrete groove is removed, the mounting structure of the grating, characterized in that the grating is attached to the pair of angle members. In the mounting method of the grating in the apartment house where the slab formwork is used for concrete placement,
Before placing concrete
Fixing a lower end of a grating frame supporting means for supporting a grating frame formed by facing a pair of angle members with a predetermined width at a predetermined height to the slab mold frame;
The semi-cylindrical groove form frame having a flange portion that forms a portion wider than a predetermined width of the pair of angle members is separated from the ground without being hooked and fixed to the pair of angle members from above. Install
After placing concrete,
A method of attaching a grating, wherein the groove form is removed to form a concrete groove, and a grating is attached to the pair of angle members.

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