JP2964415B2 - Curing method for concrete structures - Google Patents

Description

The present invention relates to a method for curing a concrete structure.

(Conventional technology) Conventionally, when curing a concrete structure, a curing sheet is laid over the entire surface on a floor slab form (for example, a slab form provided with slab reinforcement), and column reinforcement and temporary members are used. A temporary construction house was being built.

(Problems to be Solved by the Invention) However, when the curing sheet is laid on the entire surface of the floor slab form, the slab arrangement, piping and the like may be hindered, or the sheet must be laid again every time snowfall occurs. It takes a lot of trouble.

In addition, when a temporary house is constructed on a pillar or a temporary member, a lot of labor and time are required many times to change the work during an upper floor work.

The present invention has been proposed in view of the problems of the prior art described above, and its object is to interrupt or change the conventional work cycle without causing a decrease in work efficiency even in winter. It is to provide a method for curing a structure.

(Means for Solving the Problems) In order to achieve the above object, according to the method for curing a concrete structure according to the present invention, in the RC laminating method, a column, a beam, and a floor slab form on an upper layer precede. The lower frame is constructed using the preceding frame constructed as described above as a curing shed.

(Operation) According to the present invention, as described above, in the RC laminating method, the columns, beams, and floor slabs of the (n + 1) th floor are mounted in advance on the nth floor, and the preceding frame thus framed is cured as it is. As a shed, the building work of the nth floor is carried out without interruption for curing, and at this time, the upper part of the working floor is completely shut off by the preceding skeleton, so that only the side surfaces are cured. Good.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

1 to 7 show the outline of the process of the present invention, in which concrete of an n-story column (1) is poured under a beam (see FIG. 1), and then the capital of the n-story column (1) A half PC beam (2) on the nth floor is erected between the sections, and a half PC floor slab formwork (3) on the nth floor (see FIG. 2) is erected (see FIG. 3). Pour concrete (4). (Refer to Fig. 4) Then, the pillar (1 ') of the (n + 1) th floor is driven down to the beam,
(See FIG. 5) A half PC beam (2 ') half PC floor slab formwork (3') on the (n + 1) floor is erected and (see FIG. 6).
1) The preceding building consisting of the pillar (1 '), the half-PC beam (2') and the half-PC floor slab formwork (3 ') erected on the floor is a curing shed, and as shown in FIG. Then, as shown in FIG. 7, the slab concrete (6) of the nth floor is cast and the panel zone concrete (4 ') of the (n + 1) th floor is cast.

The following steps are repeated to construct a concrete structure.

FIGS. 8 to 17 show the work process and the accompanying curing in more detail. The column formwork (11) on the nth floor is set, and the bag-like sheet (12) is reversed on the capital. The bag-shaped sheet (12) is formed in a truncated quadrangular pyramid shape, and the hem portion is formed so as to be foldable.
The hem is fastened with Velcro so as to hold the same frame when it is fitted to the frame.

Next, concrete (13) is poured into the formwork (11) up to the lower end of the beam (see FIG. 9).
And remove the PC wall (14). (See Fig. 10) Next, the half-PC beam (15) is attached, and the lower end of the beam of the adjacent half-PC beam (15) is closed and welded, and the beam formwork (16) is set.
(Refer to Fig. 11) Next, set the balcony (17 ') on the (n + 1) floor and the half-PC slab formwork (18), arrange the top reinforcement of the beam, perform enclose welding, and arrange the panel zone reinforcement. Perform
(See FIG. 12.) Next, concrete is poured into the panel zone and the beam joint portion, the skirt of the bag-like sheet (12) is expanded, the heat generating lighting device (19) is accommodated, and the panel zone concrete is kept under heat and curing. (Refer to FIG. 13) Next, a column-end rebar is set on the column of the n-th floor, a (n + 1) -column column formwork (11 ') is set, and concrete (13') is cast to the lower end of the beam. . The column-shaped cap is fitted with the bag-shaped sheet (12). (See Fig. 14) Next, the formwork under the pillar was removed, and the PC wall (1 + 1) on the (n + 1) floor was removed.
4 ') is attached, half PC beam (15') is set, and the lower end of the beam is enclosed and welded. (See Fig. 15) Next, the beam formwork (16 ') on the (n + 1) th floor was installed, and the balcony (17') and the half-PC floor slab formwork (18 ') were set.
Reinforcing the top reinforcement of the beam, enclose welding, and reinforce the panel zone.

Thus, the lower floor framing is performed using the skeleton composed of the pillar (13 ') half PC beam (15') and the half PC floor slab form (18 ') of the (n + 1) floor as a curing shed.

At this time, the capital is cured with a bag-like sheet (12),
The (n + 1) th floor is surrounded by a zipper type sheet (20), and a wire reinforcing sheet (21) is laid on the roof to cure. (See Fig. 16.) The wire reinforcement sheet (21) is constructed by stretching a vinyl sheet on the upper surface of the wire flotation.

Next, slab reinforcement of the nth floor is arranged, concrete of the panel zone and the beam joint part of the (n + 1) th floor is cast, and slab concrete (22) of the nth floor is cast.
(See FIG. 17) At this time, the capitals and the panel zone are heated and cured by the heating light by the bag-shaped sheet (12) in the same manner as in FIG. 12, and the n-th and (n + 1) -th floors are zipper-type sheets. (20), the (n + 1) th floor roof is cured with the wire reinforcing sheet (21) as described above, and the nth and (n + 1) th floors are heated.

Hereinafter, the same steps are repeated to construct a concrete structure.

(Effects of the Invention) According to the present invention, as described above, in the RC laminating method, the preceding frame constructed by attaching the columns, beams, and floor slabs on the upper layer in advance is used as a curing room as it is, The construction work of the lower layer is performed, and a curing room is constituted by structural members that should be used originally, so that no temporary material is used at all, which is economical. Further, according to the curing method of the present invention, the construction cycle of the concrete structure is not interrupted, and the working efficiency is not reduced even in the winter period. Furthermore, since the structure itself is a curing shed, it is excellent in strength, the curing shed is provided for each floor, the air volume can be small, and the upper part of the working floor is completely shut off,
Curing only on the sides is sufficient, so that the amount of heat required for heating is small.

Furthermore, according to the present invention, all-weather work can be performed even in the summer, so that it is effective for leveling the floor during rainfall.

According to the invention of claim 2, a bag-shaped sheet is reversely fitted on the column capital, and the slab formwork (for example, a slab formwork with slab arrangement).
A wire reinforced sheet is laid on the upper part to facilitate snow removal work and to cure the curing hut effectively against snow.

According to a third aspect of the present invention, the bag-shaped sheet is formed in a truncated quadrangular pyramid shape, and is fitted to a capital to easily and securely cure the same, and the hem is formed to be foldable. The hem portion is expanded so that the column capital and the panel zone can be cured together.

[Brief description of the drawings]

1 to 7 are perspective views showing the outline of the steps of one embodiment of the method for curing a concrete structure according to the present invention, and FIGS. 8 to 17 show the respective working steps and the accompanying curing steps. FIG. (1) ... n-story column, (1 ') ... (n + 1) -story column, (2) ... n-story half PC beam, (2') ... (n + 1) -story half PC
Beam, (3) ... n floor half PC slab formwork, (3 ') ... (n + 1) floor half PC slab formwork, (4) ... n floor panel zone concrete, (5) ... n (6)… slab concrete, (13)… n-story concrete, (13 ′)… (n + 1) slab concrete, (15)… n-story half PC beam, (15 ′) ... (n + 1) half-story PC beam, (18) ... n-story half PC slab formwork, (18 ') ... (n + 1) half-story PC slab formwork, (22) slab concrete.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04B 1/16 E04G 21/28

Claims (3)

(57) [Claims] (1) In the RC laminating method, concrete is characterized in that upper layers of pillars, beams and floor slabs are mounted in advance, and a lower frame is constructed using the preceding frame constructed as described above as a curing room. How to cure the structure. 2. The method for curing a concrete structure according to claim 1, wherein a bag-like sheet is fitted in reverse to the curing of the column capital, and a wire reinforcing sheet is laid on the curing of the upper part of the floor slab form. 3. The method for curing a concrete structure according to claim 2, wherein the bag-like sheet has a truncated quadrangular pyramid shape, and a hem portion is formed to be foldable.