JP5670655B2 - Support equipment for concrete floating formwork - Google Patents

Description

  The present invention supports a concrete formwork (floating formwork) directly above a concrete slab forming space, or supports a concrete formwork (floating formwork) on the surface of a step when forming a concrete step portion of a veranda. It is related with the support apparatus of the concrete floating formwork used when carrying out.

  As a structure for supporting a so-called floating formwork, for example, the base of the formwork support material is supported in a cantilever manner on the vertical reinforcement of the wall reinforcing bar assembly arranged inside the concrete formwork on the outside of the wall. A structure in which the lower end of a wall inner concrete formwork (floating formwork) is placed on a frame support material and is arranged relative to the wall outer concrete formwork (for example, Patent Document 1), or a building body Concrete in which a support material is erected on a reinforcing bar assembly arranged in a concrete slab formation space and a lower end is supported by the support material when a step is formed between the floor surface on the side and the floor surface on the veranda side There is a structure (for example, Patent Document 2) in which a mold frame is arranged in the stepped portion.

Japanese Utility Model Publication No. 63-89049 Japanese Utility Model Publication 2-37953

  However, in any of the conventional structures, when the floating formwork is removed (demolded), the upper end (surface) of the support material that supports (places) the lower end of the floating formwork is placed on the concrete. There is a problem that it is exposed to the surface and, in short, a necessary cover thickness cannot be secured.

  The present invention is proposed as one of means for solving the problems of the conventional example.

A formwork support material supported by a reinforcing bar assembly is provided in the concrete placing space, and the lower end surface of the formwork is suspended at the upper end portion of the vertical member of the formwork support material with the upper end portion and a gap therebetween. A support device for a concrete floating formwork in which a support material to be supported is detachably attached, and the formwork support material is a latch that can be attached to a vertical rebar of a reinforcing bar assembly arranged in a concrete placement space. A fixing member composed of a portion and an arm portion extending laterally from the locking portion, a receiving member that can be locked at an arbitrary position in the longitudinal direction with respect to the arm portion, and standing on the receiving member A vertical member having a support member screwed to the upper end thereof, the vertical member having a lower end portion fixed to the arm portion and being fixed as a basic means. Male block provided at the upper end of the vertical member at the axial position of the lower end surface on the small diameter side of the block body. Provided with an internal thread to be screwed to the Flip, the upper end surface of the large diameter side, was adopted a structure in which a locking portion of the tool for rotating the block body.

According to the present invention, after concrete placement, a cover thickness forming space can be obtained by simply removing the support material from the placement surface, and the necessary cover thickness can be easily secured by pouring concrete into the formation space. it can. In addition, even after the fixing member is fixed to the vertical stripe, by moving the receiving member to an arbitrary position on the arm portion extending in the horizontal direction, the floating formwork in the horizontal direction that is the extending direction of the arm portion is obtained. Position adjustment is possible, construction accuracy can be improved, and the weight of the floating formwork is supported by the arm through the vertical member, so there is no slipping down, and construction accuracy is also in this respect. Can be improved.

The longitudinal cross-sectional view of the 1st Example which shows the state at the time of concrete placement completion. The top view which shows the relationship between the formwork support material of a 1st Example, and a reinforcing bar assembly. Sectional drawing of FIG. The longitudinal cross-sectional view of the 1st Example which shows the state which ensured the cover thickness. The longitudinal cross-sectional view of the 2nd Example which shows the state at the time of completion of concrete placement. The top view which shows the relationship between the formwork support material of a 2nd Example, and a reinforcing bar assembly. Sectional drawing of FIG.

  The drawings show the first and second embodiments of the concrete floating formwork supporting apparatus according to the present invention. In each embodiment, the wall-side concrete formwork and the wall-side concrete formwork 1 (not shown) are provided relative to each other. A concrete placement space 2 is provided in which the wall formation space 2a and the slab formation space 2b communicate with each other, and a rebar assembly 3 is arranged in the concrete placement space 2 (wall formation space 2a) to place concrete. The present invention is applied to such a formwork apparatus.

  That is, the formwork support 4 is supported in a cantilever manner on the rebar assembly 3, and the female screw 6 a is screwed into the male screw 5 a provided at the upper end of the vertical member 5 of the formwork support 4 to support the support 6. Is attached to the formwork support member 4 in a detachable manner, and the upper end surface 6 'of the support member 6 is arranged so as to be positioned on the same plane as the concrete placement surface a of the slab formation space 2b (concrete placement space 2). Then, the lower end of the wall inner concrete form 1 (hereinafter referred to as the floating form 1) constituting the floating form of the embodiment is placed on and supported by the upper end surface 6 'of the support material 6. A support device is configured.

  The formwork support material 4 has a base attached to the longitudinal bars 3a of the reinforcing bar assembly 3, and an appropriate number corresponding to the found width (dimension) of the assembly 3 is arranged in the concrete placing space 2, and each formwork The support material 6 is assembled to the support material 4 as described above.

  In addition, although the structure of this formwork support material 4 differs in the 1st, 2nd Example, this difference is later mentioned separately in the 1st, 2nd Example.

  As described above, the vertical member 5 of the mold support member 4 of each embodiment includes the male screw 5a at the upper end, and the support member 6 that is detachably attached by being screwed to the male screw 5a is provided at the base of the male screw 5a. As a result, the protruding portion from the vertical member 5 is made constant by the flange piece 5a ', and as a result, the floating formwork 1 supported by the plurality of support members 6,... The horizontal reference of a is set.

  The support member 6 is composed of an inverted truncated cone-shaped block body 6A made of synthetic resin and a metal core 6B having a hexagonal cross section arranged on the axis of the block body 6A. The upper part of the core tube 6B provided with the female screw 6a existing at the axial line position of the lower end surface on the small diameter side 6 protrudes into the recessed portion 7 of the block body 6A formed in the center of the upper end surface 6 'on the large diameter side. In this way, the locking portion of the tool is obtained.

  Then, the reinforcing bar assembly 3 is arranged inside the constructed wall-side concrete formwork, and the formwork support material 4 is supported in a cantilever shape on an appropriate one of the vertical bars 3a arranged in parallel to the reinforcing bar assembly 3. Then, the vertical member 5 of the mold support member 4 is disposed at an appropriate position, and the support member 6 is supported by the mold support member 4 by removably screwing the female screw 6a with the male screw 5a of the vertical member 5. The pier 1b of the floating formwork (wall-inside concrete formwork) 1 is placed on the end face 6 ', and the floating formwork 1 composed of the pier 1b and the plywood 1a is placed relative to the wall-side concrete formwork. A concrete placement space 2 is formed.

  Next, the concrete is placed in the concrete placement space 2 to the concrete placement surface a, and after the curing, the mold is removed, and the recessed portion formed on the upper end surface 6 'of the support material 6 exposed on the surface of the placement concrete. 7 is engaged with a tool to hold the upper locking portion of the core tube 6B in the recessed portion 7 and to support the support material 6 by using the screwed relationship between the male and female screws 5a and 6a. When removed from the material 4 (vertical member 5), a cover thickness forming space h having a cross-sectional shape obtained by removing the support material 6 appears on the concrete placing surface a, and has the same contour shape as the support material 6 (inverted truncated cone shape). ) Is engaged with the cover thickness forming space h in such a manner that the threaded portion is screwed into the male screw 5a in the same manner as the support member 6 (even if concrete is injected instead of the filling block 16). Good) A concrete structure with the necessary cover thickness It is of being.

  The support member 6 need not be limited to the structure of the embodiment, and the point is that the support member 6 can be freely detached from the concrete attached to the longitudinal member of the formwork support member, and the portion where the member is detached. As long as the cover thickness forming space can be configured, it is sufficient. Further, the formwork support material according to the present invention should be supported by the rebar assembly from the relationship of being discarded material in the cast concrete, and if supported by the rebar assembly, its structure, aspect, etc. The implementation can be freely chosen.

  The formwork support material of each of the first and second embodiments extends in the lateral direction to a locking portion 41a that can be mounted from the side with respect to the longitudinal bars 3a of the rebar assembly 3 that has been arranged. A fixing member 41 provided with an arm portion 41b, a receiving member 42 locked at an arbitrary position in the longitudinal direction with respect to the arm portion 41b of the fixing member 41, and standing on the receiving member 42, It is provided with a vertical member 5 that supports a support member 6 that supports the floating formwork 1 from the lower surface side by screwing it to the upper end.

Formwork support material of the first embodiment The formwork support material 4 of the first embodiment shown in FIG. 1 to FIG. 4 is provided with reinforcing bars 41a ′ and 41a ′ on the locking portions 41a of the fixing member 41. When the arm portion 41b is engaged with the central portion piece 41a ″ of the locking portion 41a and the head portion 41b ′ is pressed against the longitudinal muscle 3a, the head portion 41b ′ and the upper portion The lower bars 41a 'and 41a' sandwich the vertical bars 3a and are supported by the reinforcing bar assembly in a cantilever manner.

  Then, after the receiving member 42 screwed to the arm portion 41b is disposed at an appropriate position along the arm portion 41b using the screwing relationship with the arm portion 41b, the vertical member 5 is screwed to the receiving member 42 and The support member 6 is screwed and attached to the upper end (or screwed in advance).

  The vertical member 5 is screwed into the receiving member 42, but may be bonded in advance with an adhesive (in this case, the male screw is omitted). 42 'shows a positioning member of the receiving member 42. This positioning member 42 'is particularly effective when the receiving member 42 is not screwed to the arm portion 41b.

Form support material 4 of the second embodiment The form support material 4 of the second embodiment shown in FIGS. 5 to 7 is different from that of the first embodiment in the configuration of the receiving member 42 and is shown by the same reference numerals. As described above, the remaining points are the same as in the first embodiment.

  The receiving member 42 of the second embodiment is a piece of the receiving member 42 that is formed into a generally U-shaped frame at an appropriate position in the middle of the arm portion 41b supported in a cantilever shape by the fixing member reinforcing bar assembly 3. 42a, 42a are locked, and the screw part 5b provided at the lower part of the vertical member 5 screwed to the central piece (nut material) 42b is pressed against the arm part 41b, and the screw part 5b (the lower end of the vertical member 5) is pressed. ) And the piece 42a, the arm portion 41b is clamped and fixed to the arm portion 41b.

  The support material 6 is used by being screwed to the vertical member 5 as in the first embodiment.

DESCRIPTION OF SYMBOLS 1 Floating formwork 2 Concrete placement space 3 Reinforcement 4 Formwork support material 5 Vertical member 6 Bearing material

Claims (2)

A formwork support material supported by a reinforcing bar assembly is provided in the concrete placing space, and the lower end surface of the formwork is suspended at the upper end portion of the vertical member of the formwork support material with the upper end portion and a gap therebetween. A support device for a concrete floating formwork in which a support material to be supported is detachably attached ,
The formwork support member is composed of a locking portion that can be attached to a vertical bar of a reinforcing bar assembly arranged in a concrete placement space, and an arm portion that extends laterally from the locking portion. A member, a receiving member that can be locked at an arbitrary position in the longitudinal direction with respect to the arm portion, and a vertical member that is erected on the receiving member and has a support member screwed to an upper end thereof, the vertical member having a lower end portion A concrete floating formwork supporting device, characterized in that is fixed in contact with the arm portion.   The support member is formed of an inverted conical block body, and an internal thread that is screwed into a male thread provided at the upper end of the vertical member is provided at the axial position of the lower end face on the small diameter side of the block body, and the upper end face on the large diameter side The supporting device for a concrete floating form according to claim 1, further comprising a locking portion for a tool for rotating the block body.

Images