JP2004204505A - Half prestressed concrete plate and construction method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a half prestressed concrete plate and a construction method using the half prestressed concrete plate allowing highly accurate and the simple installation of floating forms heretofore with large dispersion due to an individual difference while requiring much labor and time. <P>SOLUTION: This half prestressed concrete plate 4 for use in the construction of a wall, a column or the like is composed of a half form 5 for a floor and pedestals 6 for the floating forms arranged in prescribed positions of the half form for the floor. The floating forms 7, 8 are fixed to the pedestals 6 for the floating forms to ensure the construction quality of the wall, column, or the like while making the installation highly accurate and simple. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a half-PC board and a construction method using the same, and more particularly, to a half-PC board capable of easily and accurately installing a floating formwork and a construction method using the same.
[0002]
[Prior art]
When a building has a floor and pillars, walls or inverted beams on the floor surface, in particular, railing walls such as verandas, balconies and corridors, and straight walls forming the outer shell of the building such as inverted beams In the case of (1), a floating formwork may be used when installing a concrete formwork for constructing the pillars, rising walls, and the like that are arranged.
[0003]
As an example of the construction in the case of employing these floating forms, as shown in FIG. 6 (a), a balcony form 30 is assembled vertically on a lower form 31 for a slab, on its end. The outer mold frame 32 for a straight wall and the floating mold frame 33 assembled parallel to the inside of the outer mold frame 32 for a straight wall. Each formwork is assembled by a weir plate 34 and a large number of supports and separators (not shown) for holding the same, and a concrete casting space 35 is provided between the outer formwork 32 for straight walls and the inner formwork 33 for straight walls. Similarly, a space 36 for forming concrete is formed on the lower mold frame 31 for the slab, and a polytechnical reinforcing bar 37 and the like that bends and extends to the spaces 35 and 36 are incorporated.
[0004]
In this case, the bottom of the floating mold frame 33 is supported by a metal receiving member 38 as shown in the figure. The metal receiving member 38 is formed by appropriately diverting a bent steel butter angle receiver or the like. It is composed of a leg part 38-1 and a horizontal receiving part 38-2, and stands upright on the lower mold frame 31 for slab. However, since the receiving object 38 is empirically arranged by the worker on the lower mold frame 31 for the slab and is not securely fixed, the arrangement position is determined and stable. As for the gender, I simply expected the result.
[0005]
Furthermore, the concrete after the construction has formed a permeation hole formed through each receiving object, causing drainage from the gutter to drop downstairs and corroding the reinforcing steel.
[0006]
[Patent Document 1]
JP-A-9-32107, (Page 3, paragraphs 0010 to 0011, FIG. 2)
[0007]
In another example shown in FIG. 6B, the veranda form 40 includes a floor form 41, an outer form 42 and a floating form 43, and the veranda form 40 is a floor form 41. Is installed, the outer formwork 42 is erected, and the receiving object 44 is erected on the floor formwork 41 to mount the floating formwork 43 as the inner formwork. A veranda 45 made by casting concrete on the floor forms a veranda floor 46 and a handrail wall 47.
[0008]
Therefore, the floating form 43 is supported by the receiving object 45 on the floor form 41, but the establishment of the receiving object 45 is extremely unstable because it is manually performed, and at the same time, the setting is made by this. Since the height to be performed becomes inaccurate, the installation of the floating formwork 43 is not sufficiently insufficient with respect to the determination of the arrangement position and the stability.
[0009]
Also, in the case of this example, the concrete after the construction forms a permeation hole formed through each receiving object, and similarly causes a drainage from the gutter to drop downstairs and a factor that corrodes the reinforcing steel. Was.
[0010]
[Patent Document 2]
Japanese Patent Application Laid-Open No. 2000-29157, (Page 3, Paragraph 1700-0027, FIG. 1)
[0011]
As described above, the application of the floating formwork in the related art has many problems as follows because the installation of the receiving object on the floor formwork is performed manually, and secures high-quality construction. Therefore, immediate improvement was desired.
[0012]
(1) A lot of trouble and time were required for construction.
(2) There was considerable variation in construction due to individual differences. (3) Height setting and establishment were unstable.
(4) The installation accuracy of the floating formwork was not secured.
(5) The foreign material is exposed on the concrete surface to form a permeation factor of surface water.
(6) Infiltration water from gutters and the like will drip downstairs and corrode reinforcing steel.
[0013]
[Problems to be solved by the invention]
The present invention has been proposed in view of the above situation, and a half PC board capable of easily and accurately installing a floating formwork by improving the above-mentioned problems pointed out, and a construction method using the same. The purpose is to provide.
[0014]
[Means for Solving the Problems]
The half PC board according to the first aspect of the present invention is a half PC board applied to construction using a floating formwork, and a floating formwork arranged at a predetermined position on a floor half formwork section and a floor half formwork section. It is composed of a pedestal and a floating formwork, which ensures high-precision and high-quality installation while simplifying the installation of the floating formwork.
[0015]
A half-PC board according to the invention of claim 2 is a half-PC board applied to construction using a floating formwork, wherein an L-type half formwork and a floor are formed by continuously forming a floor half-form section and a rising section. It consists of a floating formwork cradle placed at a predetermined position on the half formwork part, and installing a floating formwork that constructs a vertical wall such as a handrail wall or a reverse beam with high precision and ease Ensures construction quality.
[0016]
The half-PC board according to the third aspect of the present invention is characterized in that, in the half-PC board according to the first or second aspect, the floating form receiving base is formed integrally with the floor half form part. In addition to the above functions, the position setting of the floating form receiving base is established.
[0017]
The construction method according to the present invention is a construction method using the above half PC board, in which a half PC board having at least a floating form receiving base is installed, and then the floating form is placed on the floating form receiving base. Is fixed, and then concrete is cast. The half-PC board is formed at a predetermined position of the L-shaped half formwork and the floor half-formwork part, which are composed of the floor half-form part and the rising part continuous. It is characterized by comprising a floating formwork pedestal to be placed in the center, and the quality is secured while reducing the cost by installing the floating formwork with high accuracy and simple construction.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
A half-PC board according to the present invention is a flat half-frame for floor, or an L-shaped half-frame having a floor half-frame and a rising portion continuous with each other, and a predetermined position of each half-frame for floor. Floating formwork pedestal to be placed on the floor, and this makes it possible to use the floating formwork used when constructing columns, walls and inverted beams on the floor surface, or verandas, balconies and handrail walls in corridors, etc. The construction quality is ensured while installing with high precision and ease.
Hereinafter, embodiments of a half PC board according to the present invention will be described in detail with reference to the drawings.
[0019]
FIG. 1 is a perspective view of a partial section showing a first embodiment of a half PC board according to the present invention.
In the present embodiment, a half PC board 4 is installed in order to construct the columns 2 and the inverted beams 3 on the floor surface 1. Since the half PC board 4 is composed of a flat floor half-frame part 5 and a floating form receiving base 6 arranged at a predetermined position of the floor half-frame part 5, the half PC board 4 At the same time, the floor half-form 5 for placing the concrete is placed, and at the same time, the floating form 7 for the pillar 2 and the upright Floating molds 8, 8 are arranged.
[0020]
The floating formwork 7 for the column 2 is fixed on a support 6 for the floating formwork arranged around the main reinforcement 9 constituting the column 2, and the floating formwork 8 for the inverted beam 3 is Are fixed to the floating form receiving pedestals 6, 6 which are arranged with the reinforcing bar 10 therebetween.
[0021]
Each floating form is fixed to the floating form receiving base by a fixing tool 11 such as a bolt, and is assembled in a normal holding form using a separator 12, a single tube 13 and a holding jig 14 as shown in the drawing. I have.
[0022]
The wire mesh 15 arranged between the floating form receiving bases 6 and 6 is arranged so as to cover the reinforcing bar spacers 16 of the floor half form part 5, and is used for the column 2 and the inverted beam 3. The concrete countermeasures are taken to prevent the flow of concrete when placing concrete.
[0023]
In the subsequent construction, after arranging the half PC board 4 and the respective floating formwork 7, 8 and the like, the concrete of the floor slab, the reverse beam, and the column is cast, and the predetermined concrete of the cast concrete is used. After curing, the floating molds 7, 8 and the like are removed from the mold to construct the floor, pillars and inverted beams on the floor surface.
[0024]
As described above, the half PC board 4 according to the present embodiment is composed of the flat floor half-frame 5 and the floating frame receiving base 6 arranged at a predetermined position of the floor half-frame 5. It is configured as shown in a front view (a) and a side view (b) of FIG.
[0025]
That is, the floor half form 5 is configured so that the truss bars 17 are arranged as usual on the surface thereof to enhance the adhesive force with the cast concrete. A predetermined number of floating form receiving pedestals 6 are arranged at positions, and a screw hole 18 for fixing the floating form is formed on the upper surface of the floating form receiving pedestal 6.
Thus, in the present embodiment, the floating form receiving portion 6 is integrally molded when the floor half form 5 is formed. However, the floating form receiving part 6 for the floor half form 5 is formed. The installation of the cradle 6 for frames is not limited to this. If necessary, the cradle 6 for floating forms is formed in a block shape, and the half form section 5 for floors is formed. The work can also be performed by temporarily fixing at a predetermined position.
[0027]
FIG. 3 shown below is a partial cross-sectional perspective view of a half PC board according to a second embodiment of the present invention. Parts similar to those in the above embodiment are denoted by the same reference numerals. I have.
[0028]
The half PC board 20 in the present embodiment is used for constructing a rising portion such as a veranda, a balcony and a handrail wall or a reverse beam of a corridor, and includes a floor half-frame portion 21 and a rising portion 22. Are formed continuously, and a floating form receiving base 6 arranged at a predetermined position of the floor half form portion 21.
[0029]
In the present embodiment, in order to construct the column 24 and the inverted beam 25, the outer formwork 26 and the floating formwork 27 for the column, the half PC board 20 for the inverted beam, and the floating formwork 28 are arranged. The half PC board 20 is formed by applying the floor half formwork 21 of the L-shaped half formwork 23 to cast concrete for the floor surface. The rising part 22 of the L-shaped half form 23 is adapted, and a floating form 28 for the inverted beam 25 is arranged so as to face the rising part 22.
[0030]
The floating formwork 27 for the column 24 is fixed on the floating form receiving base 6 arranged around the main reinforcement 9 constituting the column 24, and the floating formwork 28 for the inverted beam 25 is , Is fixed on a floating form receiving pedestal 6 arranged with a reinforcing bar 10 therebetween.
[0031]
The point that each floating form is fixed to the floating form receiving base by fixtures 11 such as bolts and assembled using the separator 12, the single tube 13 and the holding jig 14 is similar to the above-described embodiment. It is.
[0032]
In addition, the wire mesh 15 disposed between the floating form receiving bases 6 and 6 suppresses the flow of the rising concrete for the columns 24 and the reverse beams 25 when the concrete is poured. This is the same as the embodiment.
[0033]
FIG. 4 is a front view (a) and a side view (b) showing a half PC board 20 used in the present embodiment, and is an L-shaped half formed by continuously forming a floor half frame portion 21 and a rising portion 22. The half PC board 20 is composed of the formwork 23 and the floating formwork pedestal 6 arranged at a predetermined position of the floor half formwork 21.
[0034]
The L-shaped half form 23 is composed of a floor half form 21 and a rising portion 22 which is vertically continuous with the floor half form 21, and at a predetermined position of the floor half form 21, The half PC board 20 is configured by arranging a plurality of required floating form receiving bases 6.
[0035]
The point that the truss bars 17 are arranged on the surface of the floor half form part 21 to enhance the adhesive force with the cast concrete, and that the floating form part arranged at a predetermined position on the surface of the floor half form part 5 is used. With respect to the point where the screw holes 18 for fixing the floating formwork are formed on the upper surface of the support form 6 and the installation form of the formwork support 6, the floor form half formwork is integrally formed or formed in a block shape. The point which can be temporarily fixed to the part 21 is also the same as that of the said embodiment.
[0036]
Next, the construction method according to the present invention will be described.
The construction method according to the present invention comprises a flat plate having a floating form receiving base arranged at a predetermined position, or an L-shaped half form having a floor half form part and a rising part continuously formed. The half PC board is placed, and then the floating formwork is fixed on the floating formwork pedestal, and then concrete is poured.
[0037]
Hereinafter, an embodiment of the construction method according to the present invention will be described in detail with reference to the drawings. FIG. 5 shows the present invention in which a half PC board 4 is installed to construct a column 2 and a reverse beam 3 on a floor surface. Each step in the construction method is shown.
[0038]
FIG. 5 (a) shows a process of installing a half PC board, in which a flat floor half frame portion 5 having a floating frame receiving base 6 arranged at a predetermined position is provided with a pillar main bar. 9 are arranged in the vicinity.
The floor half form part 5 is adapted to cast concrete for the floor surface, and at the same time, the reinforcing bar 10 of the inverted beam 3 is mounted on the floating form receiving pedestals 6, 6 on the floor half form part 5. Arranged in between.
[0039]
Although the present embodiment is directed to the half PC board 4 including the flat floor half-frame portion 5, the above-described floor half-frame portion 21 and the rising portion 22 are formed continuously. Even if the L-shaped half formwork 23 is targeted, the construction process is essentially the same, so the following description is made only for the half PC board 4 including the flat floor half formwork portion 5. .
[0040]
FIG. 5 (b) shows the process of installing the floating formwork, and simultaneously with the placement of the half formwork section 5 for the floor, the upright concrete for the column 2 and the inverted beam 3 is cast. The floating formwork 7 for the column 2 and the floating formwork 8 for the inverted beam 3 are arranged.
Each floating form is fixed to the floating form receiving base by a fixing tool 11 such as a bolt, and is assembled in a normal holding form using a separator 12, a single tube 13 and a holding jig 14 as shown in the drawing. I have.
[0041]
FIG. 5 (c) shows a step of placing concrete of a floor slab, a column, and a counter beam.
After the half PC board 4 and the respective floating forms 7, 8 and the like are arranged, the concrete of the floor slab, the inverted beam, and the column is cast. The cast concrete of the reverse beams and columns is appropriately prevented from flowing to the floor slab side by the wire mesh 15 disposed between the floating form receiving pedestals 6 and 6, and the whole is smooth. After the concrete 19 is poured, the concrete form 19 is integrated with the floor half-frame 5.
[0042]
FIG. 5D shows a process in which the construction of the floor slab, the column, and the counter beam is completed.
Concrete casting after each of the above-mentioned steps is completed by removing the floating molds 7, 8 and the like after predetermined curing, and the floor surface 1, the pillar 2 on the floor surface, and the reverse beam 3 Construction has been completed.
[0043]
As described above, the construction according to the present invention is an L-shaped half-type in which a flat form or a floor half-form part having a floating form receiving stand arranged at a predetermined position and a rising part are continuously formed. Since the half PC board of the frame is installed, and the floating formwork is fixed on the floating formwork pedestal and concrete is cast, the installation of the floating formwork can be performed with high accuracy and simple construction. High quality is ensured while reducing costs.
[0044]
As mentioned above, although this invention was demonstrated in detail based on embodiment, the half PC board by this invention and the construction method using it are not limited to the said embodiment at all, and the concrete It goes without saying that various modifications can be made to various shapes and the like without departing from the gist of the present invention.
[0045]
【The invention's effect】
The half-PC board according to claim 1, wherein the half-PC board is applied to a construction using a floating formwork, and the half-form frame portion for a floor and a pedestal for a floating formwork arranged at predetermined positions of the half-form frame portion for a floor. Therefore, there is an effect that the construction quality can be ensured while installing the floating formwork with high accuracy and simplicity.
[0046]
The half-PC board according to claim 2, which is a half-PC board applied to a construction using a floating formwork, wherein an L-type half formwork and a floor half-form are formed by continuously forming a floor half-form part and a rising part. Since it is composed of a floating formwork cradle placed at a predetermined position on the frame part, the construction quality can be set up with high accuracy and easy installation of the floating formwork for constructing vertical walls such as handrail walls and inverted beams The effect that can be ensured is achieved.
[0047]
The half PC board according to claim 3 is characterized in that, in the half PC board according to claim 1 or 2, the floating form receiving base is molded integrally with the floor half form section. In addition to the effects, there is an effect that the position setting of the cradle for the floating form can be established.
[0048]
The construction method according to the present invention is a construction method using the above half PC board, in which a half PC board having at least a floating form receiving base is installed, and then the floating form is placed on the floating form receiving base. Is fixed, and then concrete is cast, and the half PC board is placed at a predetermined position on the L-shaped half formwork and the floor half formwork part, which are composed of the floor half-form part and the rising part continuous. Since the present invention is characterized in that it is constituted by a floating formwork pedestal, the installation of the floating formwork can be performed with high accuracy and in a simple manner, so that it is possible to reduce costs and secure quality.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional perspective view showing a first embodiment to which a half PC board according to the present invention is applied. FIG. 2 is a first embodiment diagram relating to a half PC board according to the present invention. FIG. 4 is a partial cross-sectional perspective view showing a second embodiment in which a half-PC board according to the present invention is applied. FIG. 4 is a second embodiment of a half-PC board according to the present invention. Process diagram showing construction method [Fig. 6] Construction example diagram using conventional floating form [Explanation of reference numerals]
1 floor, 2,24 pillars, 3,25 inverted beams, 4,20 half PC board,
5, 21 Floor half formwork, 6 Floating formwork cradle,
7, 8 Floating formwork, 9 Main reinforcement, 10 Rebar, 11 Fixture,
12 separator, 13 single tube, 14 holding jig, 15 wire mesh,
16 Spacer for reinforcing bar, 17 Truss bar, 18 screw hole,
19 concrete, 22 rising part, 23 L-shaped half formwork,
26 outer formwork, 27, 28 floating formwork, 30 balcony formwork,
31 Lower formwork for slab, 32 Outer formwork for straight wall, 33 Floating formwork,
34 dam board, 35 concrete casting space, 36 space,
37 rebar, 38 metal fittings, 38-1 steel leg, 38-2 receiving part,
40 veranda formwork, 41 floor formwork, 42 outer formwork,
43 Floating formwork, 44 Hardware, 45 Veranda, 46 Floor,
47 railing wall,

Claims (5)

What is claimed is: 1. A half-PC board applied to a construction using a floating formwork, comprising a half-form part for a floor and a pedestal for a floating form placed at a predetermined position on the half-form part for a floor. . A half-PC board applied to construction using a floating formwork, wherein an L-type half formwork comprising a continuous floor half-form part and a rising part and a predetermined position of the floor half-form part are arranged. A half PC board composed of a floating form support. The half PC board according to claim 1 or 2, wherein the floating form receiving base is formed integrally with the floor half form part. A construction method using the half PC board according to any one of claims 1 to 3, wherein a half PC board including at least a floating form support is installed, and then the floating form support is mounted on the half PC board. A method of construction characterized by fixing a formwork and then pouring concrete. The half-PC board is composed of an L-shaped half form having a floor half-form part and a rising part continuous with each other, and a floating form-form receiving base arranged at a predetermined position of the floor half-form part. The construction method according to claim 4, wherein:

Images