JP3413101B2 - Outer formwork device for manufacturing outer shell PCa column members - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention not only saves labor for formwork installation work and demolding work, but also enables high work efficiency of hollow precast concrete columns (hereinafter It is called a shell PCa pillar.)
The present invention relates to an outer formwork device capable of manufacturing

[0002]

2. Description of the Related Art Conventionally, precast concrete members have been used in construction or civil engineering structures because of labor saving in building work, shortening of construction period, improvement of quality, and consideration of environmental problems.

Up to now, main reinforcements and shear reinforcements such as stirrup or assembled reinforcements have been embedded in solid concrete.
So-called full precast concrete was the mainstream,
In recent years, for the purpose of further labor saving and shortening of the construction period, etc., a cylindrical outer shell PC has been made hollow and the outer shell concrete portion is substantially provided with only shear muscles such as stirrup.
The a pillar has come to be used. In the construction, the outer shell PCa column is arranged at a predetermined column building position, and the longitudinal main bars are laid in the inner space, and then the outer shell PCa column is used as a formwork to prepare fresh concrete inside. Placing and building concrete columns. This outer shell PCa
Another advantage of using columns is that they are lighter in weight than the above-mentioned full PCa column members, so that they can be easily handled on-site, and that the lifting equipment can be simplified, and the post-casting concrete makes it possible to construct a frame. It can be mentioned that the integration with the pillar / beam using the PCa member is ensured.

Conventionally, in manufacturing the outer shell PCa column, a component panel (hereinafter, simply referred to as a control panel) reinforced with a thick material or a steel mold for precast manufacturing is used for each surface. These formwork faceplates are erected and supported by other supporting members to assemble a rectangular inner formwork and outer formwork, and shear reinforcement such as a stirrup in the space between the inner formwork and the outer formwork. After placing the streak, it was manufactured by pouring concrete from the top.

However, in the manufacturing procedure according to the conventional method as described above, each time one outer shell PCa column is manufactured, the mold installation work and the mold removal work are required for each mold surface, and Skills are required for the work because the installation accuracy of the frame is required. Therefore, improvement in manufacturing efficiency cannot be expected, and as a result,
There were problems such as not being able to reduce costs.

On the other hand, although it is an example of on-site construction, in order to solve the above-mentioned problems, a movable form unit having an L-shaped cross section, that is, a movable form unit for sharing two adjacent form faces is used. Japanese Unexamined Patent Publication (Kokai) No. 6-317016 proposes a pair of two movable mold units which form a rectangular column outer mold by combining these movable mold units.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In addition to the formwork device described in Japanese Patent Publication No. 016, it is possible to use it as an outer formwork device at the time of manufacturing a factory or manufacturing outer shell PCa columns at a site, but provisionally, a plurality of these movable formwork units are prepared. Then, in parallel work, the outer shell PCa
Considering the production of pillars, each movable formwork unit has large support legs on the back to support the formwork plate, so there is space for moving each movable formwork unit individually. Will be required for each, and a large production space will be required as a whole. In particular, in recent years, in order to save transportation costs, manufacturing tends to be performed in the space of the site site rather than factory manufacturing, and a method for efficiently manufacturing the outer shell PCa column at the site site while effectively utilizing the limited space. Is coveted. In addition, the movable form unit requires consideration for form installation accuracy for each manufacturing body. In other words, it requires skill to perform the work, and if it is not firmly fixed to the work floor at the time of assembly, it can be poured into concrete. There is also a problem that the entire formwork device may move inside.

Therefore, the main object of the present invention is to effectively utilize the limited space and at the same time, with a high work efficiency, the outer shell PC.
It is an object of the present invention to provide an outer formwork device which enables the manufacture of the a-pillars and can significantly reduce the labor for installing the formwork and demolding work.

[0009]

In order to solve the above-mentioned problems, the first aspect of the present invention is to be fixed on a manufacturing yard in an upright state, and at the same time, an arbitrary number of outer peripheral mold surfaces of an outer shell PCa pillar member can be used. A fixed outer mold which shares a mold surface, a traveling rail laid along the direction of separation from the fixed outer mold, a movable rail along the traveling rail, and the outer shell PC.
a movable outer mold which shares the remaining mold surface of the pillar member, and is located between the fixed outer mold and the movable outer mold and is movable along the traveling rail, and at least the inner mold. It is characterized in that it comprises a moving carriage on which is mounted.

A second aspect of the present invention is to fix an L-shaped wall surface portion of a wall structure, which is fixed on a manufacturing yard in an upright state and is constructed in a cross-shaped cross section, to an outer shell P to be manufactured.
A fixed outer formwork used as a formwork surface for each Ca pillar member, a traveling rail laid along the diagonal direction of each L-shaped wall surface in a plan view from the intersection of the fixed outer formwork, and an L-shaped cross-sectional shape The L-shaped wall surface part of the wall structure constructed in
It is located between the movable outer mold which is movable along the traveling rail, the fixed outer mold and the movable outer mold, and is movable along the traveling rail, and at least the inner mold is It is characterized in that it is composed of a movable carriage mounted on it. The second aspect of the present invention is the most preferable embodiment of the present invention.

In the present invention, among the outer peripheral mold surfaces of the outer shell PCa column member, an arbitrary number of mold surfaces are constituted by fixed outer molds standing upright on the work yard, and the remaining surfaces are movable surfaces. The formwork is used. Therefore, the work space can be reduced by fixing one side of the mold. In addition, since the vertical accuracy is always ensured on the fixed outer mold side, and the vertical accuracy of the moving outer mold joined to this is also indirectly maintained,
It becomes possible to efficiently manufacture the outer shell PCa column without requiring skill for installing the mold and repeating a series of work steps. Moreover, since the gantry on which the inner mold is mounted and preferably the bottom mold is mounted is also movable, it is easy to arrange the reinforcements such as shear reinforcement at a position separated from the fixed outer mold. You will be able to do it.

In the second invention showing the most preferred embodiment of the present invention, four outer shell PCa columns can be simultaneously manufactured in parallel, and different cross-sectional sizes and heights are different for each L-shaped frame surface. Different ones can be manufactured.

By the way, it is desirable that the outer formwork device can easily cope with the size change of the outer shell PCa column to be manufactured. Therefore, first, regarding the fixed outer frame, the overhanging length of each cross wall surface is set to a sufficient length so that it can be commonly used even if the cross-sectional size of the manufactured outer shell PCa column is changed. Moving outer formwork L
The size of the wall surface can be changed arbitrarily, and the outer shell PC
a When changing the cross-sectional size of the pillar, L of the moving outer mold
The wall surface size will be changed accordingly. In addition, in order to easily change the height of the fixed outer mold, the fixed outer mold of the fixed outer mold may be commonly used even if the height of the outer shell PCa column is changed. While the height is set to a sufficient height, the moving outer formwork has a height corresponding to the height of the outer shell PCa column to be manufactured, and the height of the moving outer formwork is changed when the height of the outer shell PCa column is changed. It is better to adapt to the changes.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic perspective view of a main part of an outer formwork apparatus 1 according to the present invention, and FIG. 2 is a plan view thereof.

The external formwork apparatus 1 is a concrete work floor F.
Fixed outer formwork 2 with a cross-shaped cross section fixed in a standing state
And four traveling rails 5A to 5D laid respectively along the 45-degree direction in plan view from the intersection of the fixed outer formwork 2
And a movable carriage 4 which is movable along each of the traveling rails 5A to 5D and on which the inner mold 6 and the bottom mold 7 are mounted.
This is an outer formwork device composed of A to 4D and movable outer formworks 3A to 3D each having an L-shaped cross section and movable along each of the traveling rails 5A to 5D.

The fixed outer formwork 2 is an outer formwork whose base is embedded in the concrete work floor F or which is firmly fixed to the work floor F by anchor means. As shown in FIG. The four outer shell PCa columns can be manufactured in parallel at the same time by using the respective corner surface portions of the supporting frame constructed in a cross shape in cross section by the members, that is, the respective four L-shaped wall surface portions. is there.

More specifically, as shown in FIG. 3 and FIG. 4, etc., a central position of a central shaft column 10 in which a cross column 12 is erected and supported on a regular octagonal bottom plate 11 is located at a lower position with respect to each cross segment direction. The leg connecting member 14 is arranged in the upper part, the head connecting member 15 is arranged in the upper position, and the leg connecting member 14 and the head connecting member 15 are connected and supported by a plurality of vertical bars 16, 16 ... At the same time, the horizontal bars 17, 17 ...
To construct a wall frame structure, and then, in each L-shaped wall surface part, an auxiliary support column 1 that serves as a thick material along the longitudinal direction.
8 and 18 are arranged at a plurality of places, and the baffles 19A and 19B are arranged on the outside thereof.
Of the outer peripheral formwork surfaces (4 surfaces) of the a-pillar, the two formwork surfaces are shared. The baffles 19A, 19B
As the material, not only plywood but also various materials such as synthetic resin plate and steel plate can be used. However, as a material that can withstand several tens of times without using a release agent, urethane resin is used. Those are preferably selected.

On the other hand, the upper surface of the head connecting member 15 is provided with clamp fasteners 20, 20 for tightly connecting the fixed outer mold 2 and the moving outer molds 3A to 3D described later. As shown in FIG. 5, the clamp 20 has a head connecting member 15
Having a structure in which a fastening bolt 23 having a U-shaped cross section is rotatably supported by a support bolt 21 penetrating in the vertical direction, and a tightening bolt 23 is screwed to an intermediate flange of the fastening fitting 22. Then, as shown in FIG. 6, the tip of the tightening bolt 23 is brought into contact with the screw receiving plate 24 also provided on the head connecting member of the movable outer form 3, thereby firmly connecting the two. It is something that is fixed. The clamp fastener 20 is provided not only on the head connecting material but also on the leg connecting material 14 and the horizontal rails 17, 17 ... At appropriate positions in the vertical direction.

45 from the center of the fixed outer mold 2 in plan view
Traveling rails 5A to 5D each having a lip groove type cross section are laid on the work floor F in the degree direction, that is, in the diagonal direction from the entry corner of each L-shaped wall surface. Then, the movable carriage 4A which is movable along these traveling rails 5A to 5D.
~ 4D and moving outer molds 3A to 3D are provided.

First, the fixed outer mold 2 and the movable outer mold 3A.
The movable carriages 4A to 4D located in the middle of
As shown by the chain line in FIG. 1, the inner mold 6 and the bottom mold 7
Is installed. In detail, as shown in FIG. 7 and FIG. 8, three traveling wheels 25a to 25c are arranged along the center row on the lower surface of the square base plate 27, and traveling wheels 26a are arranged on both sides. , 26b,
The traveling wheels 25a to 25c in the central row are connected to the traveling rail 5A.
It is fitted inside and is movable along the traveling rail 5A direction. Boss 27a provided on the upper surface of the base plate 27
Is for fitting with a recess provided on the bottom surface of the bottom mold 7 to align the bottom mold 7. In this example, the bottom formwork 7 is provided separately from the base plate 17 in consideration of workability when removing the manufactured outer shell PCa column, but the base plate 17 is used as it is as the bottom formwork. It is also possible.

Next, as shown in FIGS. 9 to 11, the movable outer molds 3A to 3D have traveling rails 5 at their lower ends.
At a position in a proper position in the member longitudinal direction of the main support column 30 provided with the traveling body 31 movable along the inside of A, the ski plates 41A and 41B are respectively provided in two orthogonal directions with the traveling rail 5A being a diagonal direction in a plan view. The vertical rails 36, 36 for fixing the horizontal rails 33, 34 serving as the column clamps and commonly supporting the middle of the respective horizontal rails 33, 34 are provided, and the end portions of the horizontal rails 33, 34 are commonly used. 11 is a wall frame structure provided with an auxiliary support column 35 for supporting the movable outer molds 3A to 3D on its lower end, as shown in FIG. In this state, like the movable carriages 4A to 4D, the movable carriages are movable along the traveling rails 5A to 5D.

The horizontal rails 33, 34 are each made of an outer shell PCa.
The overhang length is adjustable so that the cross-sectional size of the pillar can be easily changed. Specifically, as shown in FIG. 12 and FIG. 13, bolt through holes 33a, 34a ... Through which the through holes 33a, 34a extend longitudinally at appropriate intervals along the longitudinal direction of the member are formed at the base end side portions of the horizontal bars 33, 34. A clamp receiver 37 that is formed and provided on the main support column 30 for fixing the horizontal rail
When the and the horizontal rails 33, 34 are fixed by the fixing bolts 38, 39, the bolt through holes 33a, 34a ... Formed in the horizontal rails 33, 34 can be arbitrarily selected. On the inner surface side of the wall structure having the L-shaped cross section configured as described above, the auxiliary support column 4 that serves as a thick timber material along the longitudinal direction
0, 40 ... Are arranged at a plurality of places, and the claw plates 41A, 41B are arranged on the outside thereof, and the remaining two outer mold surfaces are shared among the outer peripheral mold surfaces (4 surfaces) of the outer shell PCa column. It was made to let.

By the way, the fixed outer mold 2 and the inner mold 6 are manufactured depending on the relative size relationship between the fixed outer mold 2, the inner mold 6 and the movable outer molds 3A to 3D. Outer shell PCa
It has a sufficient height compared to the moving outer molds 3A to 3D so that it can be used in common even if the height of the pillar is changed,
On the other hand, the movable outer molds 3A to 3D have a height that matches the outer shell PCa column to be manufactured. That is, the fixed outer mold 2
The inner mold 6 and the inner mold 6 should be of sufficient height so that they can be used universally even if the height of the outer shell PCa column to be manufactured changes.
If you want to change the height of the outer PCa column to be manufactured,
Only the heights of the movable outer molds 3A to 3D need to be changed.

Further, since the cross-sectional size of the outer shell PCa column can be easily changed, the fixed outer mold 2 can be commonly used even if the cross-sectional size of the outer shell PCa column to be manufactured is changed. As described above, the overhanging length of each cross wall surface is set to a sufficient length, while the moving outer mold forms 3A to 3D are changed in the overhanging length of the horizontal rails 33 and 34 as described above, and the bottom formwork 7 is also used. It is possible to easily cope with this by changing the size of the inner formwork 6.

An outer shell PCa is manufactured by using the outer formwork apparatus 1 described above.
In manufacturing the pillar, first, the movable carriages 4A to 4D and the movable outer molds 3A to 3D are set apart from the fixed outer mold 2, and the bottom mold 7 is placed on the movable carriages 4A to 4D. The inner formwork 6 is placed on the bottom formwork 7 while being placed. The bottom mold 7 and the inner mold 6 are the same as the previous Japanese Patent Application No. 9-1052 filed by the present applicant.
Those described in No. 94 can be preferably used.

When the setting of the bottom mold 7 and the inner mold 6 is completed, shear reinforcing bars that surround the inner mold 6 are arranged at appropriate intervals in the height direction, and then the movable carriage 4A. ~ 4
D along the traveling rails 5A to 5D and the fixed outer mold 2
After moving until it comes into close contact with the
3D is moved to the fixed outer mold 2 side. Moving outer mold 3A ~
If the 3D is moved to a position where a surrounding space is formed which is closed by the baffles 19A, 19B of the fixed outer mold 2 and the baffles 41A, 41B of the movable outer molds 3A to 3D,
The movable outer molds 3A to 3D are tightly connected to the fixed outer mold 2 by the clamp fasteners 20, 20 ...

When the installation of the formwork is completed by the above work steps, the high-strength and high-fluidity concrete is pumped from the concrete inlet (not shown) provided on the lower side and installed on the upper side. After confirming that the concrete leaks from the confirmation port of the closing plate (not shown), the concrete placing work is completed.

After that, the concrete is hardened and the demolding work is started. First of all, demolding is moving outer molds 3A to 3D
Before separating the mold from the fixed outer mold 2, the inner mold 6 is first removed. Next, the ends of the wires fed from the retracting means such as a lever block connected to the work floor F are connected to the movable outer molds 3A to 3D, and the movable outer molds 3A to 3D are operated by the lever block operation. Is separated from the outer PCa column and moved to a predetermined separated position. Also,
The movable carriages 4A to 4D are also peeled off from the fixed outer mold 2 and moved to a predetermined separation position with the outer shell PCa column being mounted on the movable carriages 4A to 4D by the same method, and the movable carriages 4A to 4D are manufactured by the unic wheel of about 4t. After the outer shell PCa column is lifted together with the bottom formwork and the bottom formwork 7 that is in close contact with the lower surface side is removed, it is piled up on the loading platform and transported to a predetermined stock location. By repeating the above process as one cycle, a large number of outer shell PCa columns can be efficiently manufactured.

In the external formwork apparatus 1, each L of the fixed outer formwork 2 is
By using the respective wall surfaces, it is possible to manufacture four outer shell PCa columns simultaneously in parallel. Further, since each L-shaped wall surface can be manufactured independently, it is possible to manufacture an outer shell PCa column having a completely different size for each L-shaped wall surface, for example. In the example shown in FIG. 14, a relatively large-sized outer shell PCa column is manufactured on the upper and lower L-shaped wall surfaces on the right side with the cross member of the fixed outer frame 2 as a boundary, and
It shows a state in which a relatively small-sized outer shell PCa column is manufactured on two L-shaped wall surfaces.

The most preferred embodiment of the external formwork apparatus 1 is
Of course, as shown in FIG. 1, the fixed outer mold 2 is a cross-shaped outer mold, and the movable outer molds 3A to 3D are L-shaped outer molds. In the case where it is difficult to install the cross outer formwork due to a small number of manufacturing yards or because the manufacturing yard is very narrow, as shown in FIG. 15, the fixed outer formwork 2 having a T-shaped cross section is used. ', And two outer shell PCa columns may be manufactured in parallel. Furthermore, in an extreme example, a fixed outer formwork having an L-shaped cross section,
It is also possible to configure the outer formwork device with a moving outer formwork having an L-shaped cross section.

By the way, the present invention is not limited to the case where a total of four outer mold surfaces of the outer shell PCa column are equally shared by the fixed outer mold 2 and the movable outer molds 3A to 3D. Absent. For example, as shown in FIG. 16, from the one end side of the L-shaped wall surface of the fixed outer mold 2 to the fixed walls 2a to 2d.
Alternatively, three of the four outer molds may be shared by the fixed outer mold, and the remaining one mold surface may be shared by the movable outer molds 3E to 3H. However, in this case, it is difficult to change the cross-sectional size as compared with the outer formwork apparatus 1 of FIG. 1 described in detail, and since the moving outer formworks 3E to 3H do not stand alone, the supporting structure is rather large. There are disadvantages such as becoming.

Further, the outer shape of the manufactured outer shell PCa column is not limited to the rectangular shape. Even in the case of a polygonal outer shell PCa column such as a pentagon or a hexagon, the total number of outer mold surfaces of the outer PCa column may be shared by the fixed outer mold and the moving outer mold.

[0033]

As described above in detail, according to the present invention, it is possible to manufacture the outer shell PCa column with high work efficiency while effectively utilizing the limited space, and at the same time, to perform the mold setting and the demolding work. It will be possible to greatly reduce labor. further,
Various advantages will be brought about, such that the precision of the mold can be maintained at all times and no skill is required for the work.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a main part of an outer formwork apparatus 1 according to the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is an enlarged plan view of a main part.

FIG. 4 is a side view of the fixed outer formwork 2.

FIG. 5 is a front view of the clamp fastener 20.

FIG. 6 is a diagram showing a procedure for tightening with the clamp fastener 20.

FIG. 7 is a front view of a moving carriage 4A.

FIG. 8 is a bottom view of the moving carriage 4A.

FIG. 9 is a side view of the movable outer formwork 3A.

10 is a view taken along line XX in FIG.

FIG. 11 is an enlarged view of part A of FIG.

FIG. 12 is an enlarged plan view of an essential part of a movable outer formwork 4A.

13 is a view taken along the line XIII-XIII in FIG.

FIG. 14 is a plan view of a method of manufacturing a PCa column having a different-sized outer shell.

FIG. 15 is a diagram showing a modified example of the outer formwork apparatus 1.

FIG. 16 is a diagram showing another modification of the outer formwork apparatus 1.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer formwork apparatus, 2 ... Fixed outer formwork, 3A-3D ... Moving outer formwork, 4A-4D ... Moving carriage 5A-5D ... Traveling rail, 6 ... Inner formwork, 7 ... Bottom formwork, 10 ... central axis pillar, F ... concrete work floor, 14 ... leg connecting material, 15 ... head connecting material, 16 ... vertical rail, 17 ・ 33.34 ... horizontal rail (column clamp), 18 ・ 40 ... auxiliary pole, 19A, 19B, 41
A ・ 41B ... Seki board, 20 ... Clamp fastener

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-134746 (JP, A) Actually developed 61-43008 (JP, U) JP-B-6-11483 (JP, B2) Patent 2527687 (JP, B1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04G 13/02 B28B ⁷ /00-7/46 B28B 21/00-23/22

Claims (4)

(57) [Claims] 1. A fixed outer mold which is fixed on a manufacturing yard in an upright state and which shares an arbitrary number of mold faces among the outer peripheral mold faces of the outer shell PCa column member, and the fixed outer mold. A traveling rail laid along the separating direction in a plan view, a movable outer formwork which is movable along the traveling rail and which shares the remaining formwork surface of the outer shell PCa pillar member,
An outer shell PC which is located between the fixed outer mold and the movable outer mold, is movable along the traveling rail, and includes at least a movable carriage on which the inner mold is mounted.
a Outer formwork device for manufacturing pillar members. 2. A mold surface for each outer shell PCa column member to be manufactured, which is fixed in an upright state on a manufacturing yard, and each L-shaped wall surface portion of a wall structure constructed in a cross-shaped cross section is manufactured. Of the fixed outer formwork, the running rails laid along the diagonal direction of each L-shaped wall surface in a plan view from the intersection of the fixed outer formwork, and the wall structure constructed in the L-shaped cross-sectional shape. L
The character wall surface is used as a mold surface, and is located between the movable outer mold which is movable along the traveling rail, and the fixed outer mold and the movable outer mold, and along the traveling rail. An outer mold device for manufacturing an outer shell PCa pillar member, which is movable and is composed of a movable carriage on which at least an inner mold is mounted. 3. Regarding the fixed outer formwork, the overhanging length of each cross wall is set to a sufficient length so that it can be commonly used even if the cross-sectional size of the outer shell PCa column to be manufactured is changed. The size of the L-shaped wall surface of the movable outer mold is arbitrarily changeable, and when the cross-sectional size of the outer shell PCa column is changed, the size of the L-shaped wall surface of the movable outer mold is changed. Item 2. An outer mold device for manufacturing an outer shell PCa pillar member according to any one of items 1 and 2. 4. With respect to the fixed outer mold, the height of the fixed outer mold is sufficiently high so that the fixed outer mold can be commonly used even if the height of the outer shell PCa column is changed. On the other hand, the moving outer mold has a height corresponding to the height of the outer shell PCa column to be manufactured, and when the height of the outer shell PCa pillar is changed, the height is changed. An outer formwork device for manufacturing the outer shell PCa pillar member according to any one of claims 1 to 3.