JPH1113280A - Free lateral batter for timbering concrete form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a free lateral batter to be freely deformable corresponding to the curved wall of a concrete in placement and repetitively usable. SOLUTION: A flexible, pressure-proof and light core 3 formed of pressure- proof strength and rigidity improving hard synthetic resin foam is filled in the hollow portion 21 of a flexible plastic tube 2 into one unit. In this way, a light and site deformation and cutting possible material is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

An object of the present invention is to provide a concrete form support for holding a concrete form arrangement as designed by being arranged behind a concrete form and being connected to a form fixing means such as a foam tie. The present invention relates to a constructional butter material, and more particularly, to provide a flexible transverse butter material for supporting a concrete formwork having a novel structure which is deformable so as to be able to cope with the installation of a curved wall and which can be used repeatedly. Is what you do.

[0002]

2. Description of the Related Art Many buildings in the high-growth period of Japanese industry tend to be built without regard to the surrounding environment because their functions and productivity are emphasized, and the appearance of these new buildings depends on their appearance. Despite frequent destruction of urban landscapes and townscapes that have long been familiar to local residents, the economic situation has shifted from a growth period to a stable period, and people have become more comfortable with their lives. In the construction and construction industries, buildings have only been constructed by the surrounding nature, nearby residents, and the people who visit them, after the surrounding environment has been severely looked at and criticism has been given to the indiscriminate development that has been done so far. Recognize that it must be built without compromising the spatial charm and history of the cityscape, and recently focus on urban landscapes. Direction has been extremely intensified.

[0003] In addition to the practical aspects directly related to people's lives, buildings are technical aspects such as structural strength, artistic aspects that create aesthetics, and involvement with users and local residents. It has the social and cultural aspects of, and it is designed to be organically infiltrated with each other and embodied into a single mass. Generally includes unity (unification of colors and materials), repetition (control by repeating similar shapes), gradation (gradual change by changes in color and shape), symmetry (symmetry, symmetry, proportion), Balance (balance, equilibrium, equilibrium), harmony (harmony), contrast (contrast), proportions (proportional, ratio, proportion), rhythm (rhythm, articulation), size, and Equal selectively applying format principle of beauty such like Jokan, so that the originality reflect deep personality and thought is exerted.

[0004] Through such thinking process, curved wall shape is one of the indispensable elements as a technique for producing a building that is well adapted to the natural environment. The analogous shape implies the image of celestial bodies such as the sun and the moon, and strongly expresses fundamental emotions as an expression of human longing for nature, and the elliptical shape has a long axis and a uniaxial gold Beauty by ratio is discussed,
In addition, the dynamics of hyperbolas and parabolic shapes are indispensable as a modern expression method with movement, such as catenary (vertical line), spiral (spiral), cycloid, and super ellipse between rectangle and ellipse. It is actively applied as

[0005] For example, taking a highway as a building, although it has the original purpose and mission of being indispensable to modern society in order to enhance the urban transportation function, it has once been If the shape is exposed to the natural world and fixed in the living space, it will be a great stress for the residents who are accustomed to living there. Therefore, now, like the expressway 61 shown in the perspective view of the viaduct in FIG. ,
By making extensive use of curved surfaces, it enhances its external aesthetics, makes it a highly artistic building, reduces the discomfort experienced by nearby residents, and at the same time, its value as a monument It is being built with care to bring economic benefit and pride as a new symbol to the region,
It is possible to know the recent tendency that building of various appearances including curved structures is beginning to be required.

In order to accurately form such a curved surface, a curved plate such as a molded plywood or a synthetic resin molded plate such as FRP as shown in a perspective view of a concrete form support shown in FIG. If the method using the formwork 8 is adopted and a balustrade of a long sidewalk as shown in the figure is formed of concrete, the formwork which is arranged facing each other at predetermined intervals on the front and back of the balustrade wall. , And 82, 82,... Are custom-formed as curved molds in which curved surfaces along the horizontal direction are vertically divided into units of a predetermined range (usually 1800 to 2000 mm). A plurality of vertical flaps 9, 9,... Made of square bars are integrally provided on the outer surface of the factory, and the factory is manufactured. After being transported to the site, it is continuously arranged to form a long curved surface having a predetermined curved surface. Assemble into one formwork 8 , A plurality of special lateral Bata material 1,1 consisting of steel pipe, which is curved in advance plant as accompany the mold frame 8, ... are additionally provided, these special lateral flap members 1,
1,... Concrete molds which are fixed to and held by nuts via washers 74, 74,... At the respective ends of a number of separators and foam ties which penetrate the balustrade wall to be cured in the thickness direction. A frame support is constructed, concrete 6 is cast in a predetermined height range, and after a curing period elapses, the form support is repeatedly repeated on the assembling so that concrete 6 is cast and as designed. The building has a concrete curved balustrade wall.

In such a conventional concrete form support, a curved form 8 for that purpose is custom-made only for the construction of the specific building, and the horizontal flaps 1, 1,... An exceptional method has been adopted in which a thick steel bar is deformed to fit the outer curved surface of the curved formwork 8 at the site, and a plurality of these are collectively used as a factory-made or custom-made means in advance. In any case, they can be remolded in buildings that value originality, since it is extremely unlikely that multiple buildings with the same appearance will be produced in a short period of time. In general, most of them are discarded without being reused.

[0008] From an economic point of view, such disposable circumstances in the concrete form support, as far as the construction technology which places importance on the finishing accuracy of the concrete wall, as far as the form panel 8 which directly forms the concrete surface is concerned. It is not possible to expect an effective means to avoid waste so far, and therefore, it is not possible to reduce the cost in that part. However, in the case of special horizontal fluttering material 1,1, ... made of steel curved pipe or steel bar Is a material that only needs to have a function of accurately holding and fixing the arrangement of the form panel 8, and the outside of the form panel 8 can be accurately arranged by using a vertical fluttering material and other appropriate inclusions. Since it becomes possible to fix, as before, the curved formwork 81,
81,... And 82, 82,... Similarly, although it is not necessary to outsource an order to a specialized contractor for each curved wall surface to achieve high quality, a formwork support for the construction of the existing curved wall surface is required. In fact, a considerable amount of the large construction costs, including the special horizontal fluttering materials 1, 1,..., Are allocated to such materials that are finally discarded.

[0009] Further, the conventional specially made transverse fluttering materials 1,1, ... for the construction of curved walls are not only economical problems as described above,
.., And 82, 82,..., It is difficult to form them as divided parts, and the molds 8 having a predetermined length range are continuously supported. Need to be long, so they need to be long, so they need a large space for production in factories and storage in warehouses, and because of their heavy weight, they can be transported to construction sites. In carrying out the work, great care must be taken in arranging vehicle equipment for transportation and ensuring its safety, and in terms of handling at the construction site, transport and assembly work by one worker is not possible due to its shape and weight. Manufacturing, storage, etc., which are almost impossible and have to be done by multiple people
It has been left with extremely irrational problems in handling and workability at each stage of transportation and assembly.

The inventor of the present application considers the situation of the conventional horizontal fluttering material in the concrete form support as described above, and is versatile by constructing it so that it can be freely deformed along with the form panel at the site. Focusing on the necessity of a flexible horizontal fluttering material for formwork support that can secure as much as possible and reduce the cost allocated to formwork support as much as possible, the functions that should be provided for the blower material and the material that can realize it We have been working on research on the combination and the like, and have repeated many trials and experiments in concrete curing along with trial and error over a long period of time. It has been successfully realized,
In the following, the configuration will be described in detail together with an embodiment representative of the present invention shown in the drawings.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As can be clearly understood from the embodiments shown in the drawings, which are representative of the present invention, the universal horizontal fluttering material for concrete form supports included in the present invention is basically as follows. It is configured. That is, a flexible pressure-resistant lightweight core body for increasing pressure resistance and rigidity is filled into a flexible plastic tube hollow portion such as a vinyl chloride tube formed with a predetermined thickness and an outer diameter, and is integrated into a lightweight and lightweight body. Abstract: This is a free horizontal fluttering material for supporting a concrete formwork, the configuration of which can be deformed and cut on site.

If the structure of the flexible horizontal fluttering material for supporting the concrete formwork included in the present invention by a more specific configuration is shown, a flexible material such as a vinyl chloride pipe formed to a predetermined thickness and an outer diameter is used. Filling and integrating a flexible pressure-resistant lightweight core into the hollow portion of the flexible plastic tube, and pressure resistance for connecting the form-fixing brackets such as foam ties that hold the form panels at predetermined intervals,
It has a rigid structure for preventing deformation of formwork panels due to cast concrete pressure, and has a structure that is lightweight and capable of on-site deformation cutting. In other words, concrete molds for curved walls of concrete structures. A foam that is a flap material in a frame support, has flexibility so that it can be attached to a curved outer surface of a form panel assembled to a concrete casting surface, and holds the form panel at a predetermined interval. Fill the hollow part of a flexible plastic tube such as a vinyl chloride tube with a flexible pressure-resistant lightweight core so that the pressure-resistant strength for connecting the tie-type frame fixing bracket can be maintained, and integrate it into a lightweight, deformable and on-site cut. It can also be said that it is a free horizontal fluttering material for supporting a concrete formwork having a configuration that enables processing.

The flexible plastic tube has a cylindrical structure capable of filling a flexible pressure-resistant lightweight core body, and has rigidity and pressure-resistant strength for connecting to a form-fixing bracket such as a separator or a foam tie. As a basic skeletal member that enables bending deformation in the field and follows a large curved surface freely each time, deforms and supports the formwork panel in the designed layout. For example, there is no particular limitation on the type of the plastic material, such as a polypropylene resin, a vinyl chloride resin, a glass fiber composite resin, an ABS resin, or the like, as long as the plastic material can perform the above-described functions.

The predetermined thickness of the flexible plastic tube is determined as a whole in consideration of the strength of the synthetic resin as a raw material and the flexible pressure-resistant and lightweight core body filled therein, and the predetermined flexibility and rigidity as a whole. The thickness must be set to ensure pressure resistance and, in some cases, a change in bending operability caused by a difference in the length of the flexible plastic tube and the like should be considered. The most suitable one is selected and used from among the commercially available and distributed synthetic resin tubes, such as vinyl chloride tubes specified in JIS standards, and the properties of the flexible pressure-resistant lightweight core described later are examined. By doing so, it is possible to obtain predetermined flexibility, rigidity, and pressure resistance as a whole. In addition, hard vinyl chloride pipe, reinforced plastic composite pipe, hard vinyl chloride oval pipe, and high rigidity chloride Various structures such as vinyl tubes , The adoption of such variable 橈性 plastic tube body of the properties is of course also possible.

The outer shape of the flexible plastic tube is optimally a cylindrical shape that can be easily bent in all directions. However, in some cases, the shape is an elliptical tube, a square tube, or a pentagon or more. The present invention is also applicable to the case in which the tube is formed in the shape of a polygonal cylinder, and it is also possible to adopt a tube formed in an asymmetrical axial section. In addition, the shape of the hollow portion of the cylindrical body may be formed in an axial cross-sectional shape different from the outer shape to facilitate deformation in a predetermined cross-sectional direction or to increase its rigidity and pressure resistance. In addition, it is formed so that its cross-sectional shape gradually changes in the axial direction, so that the entire length does not become uniform flexibility, and it is easy to partially deform or conversely, it is difficult to deform only a predetermined range. It is also possible to give priority to rigidity and pressure resistance.

The flexible pressure-resistant lightweight core is filled in the hollow portion of the flexible plastic tube, and functions to increase rigidity and pressure resistance without significantly impairing the flexibility of the flexible plastic tube. In addition, the flexible plastic tube must be formed of a material that is lighter than the flexible plastic tube. For example, a material that satisfies the above conditions, such as styrofoam resin, urethane foam resin, or foamed synthetic rubber, is used as the flexible plastic tube. In addition to making it unified by unfoamed liquid foam in the hollow part of the pipe, rods, granules, powders, bridges, etc. with the flexible plastic pipe, other shapes and structures that can be loaded or filled into the hollow part Can be appropriately selected and adopted. In the case of a granular material such as a granular material and a powdery material, as shown in the examples described later, the end portion is sealed with a cap or the like, or a coagulant or an adhesive is injected. In the case of a lump such as a piece, it should be arranged in a rosary with a connecting thread or connected to each other by a free joint structure that can change the angle of the opposing ends. It is good also as a thing of a structure.

The flexible horizontal flap material for concrete form support of the present invention, which is formed on the basis of the above structure,
In addition to being able to bend and deform in the field by attaching to the assembled formwork curved surface, in order to properly maintain both formworks at the concrete thickness of casting, the formwork fixed through the formwork through both forms Metal fittings, that is, screws that are screwed to the separator and have a strength that is not easily deformed even when the connected form tie is connected, and desirably, for wood, when an extra dimension occurs during use, etc. It is formed so that it can be easily cut using a general cutting tool such as a saw, a metal saw, a grinder, a knife, or scissors, or a fusing tool using a burner or a heating wire. Hereinafter, several embodiments having a typical configuration will be specifically described with reference to the accompanying drawings so that the concrete frame supporting free side flap material of the present invention can be more clearly understood. To

[0018]

Embodiment 1 An example shown in the perspective view of the main part of FIG. 1 and the longitudinal sectional view of a state where the concrete form support is assembled in FIG. 2 is a representative example having the most basic structure of the present invention. A hard urethane foam resin as a hard foam synthetic resin stock solution is injected at a high pressure into the hollow portion 21 of the flexible plastic tubular body 2 made of a vinyl chloride pipe, and is independently foamed at high density. The rigid pressure-resistant lightweight core body 3 forms the inner wall of the hollow portion 21 of the flexible plastic pipe body 2 due to the self-adhesiveness of the rigid urethane foam resin. This is formed so as to be strongly integrated with the flexible horizontal flap 1 for supporting a concrete formwork of the present invention.

[0019]

[Embodiment 2] The free horizontal flap 1 for concrete form support according to this embodiment, which is shown in a longitudinal sectional view passing through the shaft core of FIG.
This is an example in which a core rod 31 is disposed in a hollow portion 21 of a flexible plastic tube 2 made of a vinyl chloride tube or the like, and a core made of a hard urethane foam resin is provided on a shaft core of the hollow portion 21. After inserting and arranging the rod 31, a hard styrofoam resin stock solution is injected between the core 31 and the inner wall surface of the hollow portion 21, foamed to form a cylindrical body 32, and these core rods 3 are formed.
The columnar flexible pressure-resistant lightweight core 3 composed of 1 and the cylindrical body 32 is formed by the self-adhesiveness of the cylindrical body 32 foaming and forming stage.
The flexible plastic tube 2 is integrated into the hollow portion 21,
The flexible horizontal flap material 1 for supporting a concrete formwork of the present invention is formed.

[0020]

Embodiment 3 The flexible horizontal fluttering material 1 for supporting a concrete formwork shown in the longitudinal sectional view passing through the axis of the tubular body 2 in FIG.
Unlike the example, this is a typical example in which a granular material is employed for the flexible pressure-resistant lightweight core 3. Granules 33, 33,... Made of a small-diameter hard styrofoam resin molded into a sphere.
... are prepared in large quantities, and these granules 33, 33, ...
The hollow portion 21 of the flexible plastic tube 2 made of a glass fiber reinforced plastic composite tube is densely filled in the hollow portion 21, and caps 22, 22 made of synthetic resin are covered on both ends thereof and fixed with an adhesive. A granular body 33 filled in the hollow portion 21 of the flexible plastic tube 2 in a sealed state,
33 is a flexible horizontal fluttering material 1 for supporting a concrete formwork in which a flexible pressure-resistant lightweight core body 3 is formed.

The granular bodies 33, 33,... As the flexible pressure-resistant lightweight core body 3 in this case are not made of a foamed resin but made of a synthetic resin such as polypropylene, for example, and have a smoother surface. To reduce the friction and reduce the resistance to the bending deformation of the flexible plastic tube 2 so that the pressure resistance is reinforced, or these granules may fall out when cut and processed. From that, injection of resin stock solution as in the above example, foaming,
The granular material 33, 33,... Is formed on the flexible pressure-resistant lightweight core body 3 that is entirely solidified with an adhesive such as a vinyl chloride-based adhesive that exhibits a relatively soft property even after solidification. Can also.

[0022]

Embodiment 4 As shown in a vertical sectional view passing through the shaft core in the same manner as in FIG. 4, the flexible horizontal fluttering material 1 for concrete form support of FIG.
This is an example in which the flexible pressure-resistant lightweight core body 3 is constituted by a plurality of lumps having the same shape and a diameter that can be inserted into the hollow portion 21 of the flexible plastic pipe body 2. A plurality of pieces made of polycarbonate resin, which are slightly smaller than the inner diameter of the conductive plastic tube 2 and whose both end surfaces are formed into a smooth and gentle quadratic curved elliptical spherical shape, form a substantially barrel-shaped mass. .. Are prepared, and they are sequentially pushed into the hollow portion 21 of the flexible plastic tube 2 so that each of the pieces 4, 4,. After that, both ends of the flexible plastic tube 2 are adhered and fixed with sealing plugs 23, 23, and a plurality of pieces 4, 4,... The flexible pressure-resistant lightweight core body 3 sealed and formed is formed.

[0023]

Embodiment 5 In this embodiment, as shown in a vertical cross-sectional view passing through the axis of FIG. 6, a flexible pressure-resistant lightweight core body 3 of a free horizontal flap material 1 for concrete form support is provided. Similar to the case of the fourth embodiment, this is a representative example of a continuous body of a plurality of blocks having a predetermined shape, which has a feature in a continuous structure between the blocks. That is, the pieces 5, 5,... Are formed in a plurality of barrel-shaped parts made of polypropylene resin and formed to have a diameter slightly smaller than the inner diameter of the flexible plastic pipe 2 made of a vinyl chloride pipe or the like. And each piece 5,
At the center of one end face of each of the five,..., There is provided a convex connecting part 51 whose tip projects as a spherical body, while the other end face has an angle-free connecting structure in which the convex connecting part 51 is loosely fitted. Are sequentially formed into the hollow portion 21 of the flexible plastic tube 2, and the pieces 5, 5,... By inserting one of the convex connecting portions 51 facing each other into the other of the concave connecting portions 52 to form a loose fitting connection structure, all pieces 5, 5,. In the hollow portion 21 of the flexible plastic pipe body 2, a flexible pressure-resistant lightweight core body 3 composed of a plurality of pieces 5, 5... In the same manner as in Example 4, both ends of the flexible plastic tube 2 are adhered and closed with sealing plugs 23, 23, and conc. Over preparative formwork 支保 Engineering for a universal lateral flap members 1
It is formed in.

[0024]

The vertical cross section of the concrete form supporting structure shown in FIG. 2 is used in the concrete form supporting work for casting concrete curved wall surfaces according to the present invention. As shown in the figure, first, vertical fluttering members 9, 9,... Are provided on both outer side surfaces of curved formwork panels 81, 81,.
… Is a prefabricated structure that is pre-attached integrally at the factory, or is attached at the site,
A predetermined interval corresponding to the thickness of the cast concrete 6
And the adjacent curved formwork panels 81, 8
1, ..., and 82, 82, ... are mutually connected by nailing or other means.

On the other hand, both outer sides of the curved formwork panels 81, 81,... And 82, 82,.
The present invention uses foam ties 72, 72,... Screwed to cones 71, 71,... At both ends and projecting outward from the outer side surface. By freely arranging and fixing the flexible horizontal flaps 1, 1 in the horizontal direction, the flexible horizontal flaps 1, 1 can be curved because of their flexibility. .. Are deformed so as to substantially match the curved surface formed by the curved surface form panels 81, 82,. .. Are connected to the outside of the vertical fluttering members 9, 9,... So as to support all the vertical fluttering members 9, 9,.

As a result, the curved formwork panels 81, 81,..., And 82, 82,. .., Are arranged by the metal fittings 7 and 72 so that the spaces between the facing curved formwork panels 81, 81,... And 82, 82,. It prevents spreading by pressure, and the metal fittings 7 and 72
, And 82, 82,..., And 82, 82,.
.., The outer sides thereof are supported by the free horizontal flaps 1, 1 of the present invention via the vertical flaps 9, 9,. The reinforced structure of the horizontal fluttering members 1, 1 prevents the concrete 6 from bulging outward due to the casting of the concrete 6, and finally, the curved formwork panels 81, 8 connected in the horizontal direction.
, And 82, 82,... All realize the formwork 8 by formwork support, which can properly secure the curved shape of the concrete curved wall to be formed and the thickness of the cast concrete 6. In the figure, 74 is a form tie 72
2 shows a washer that pierces through and contacts the outer surface of the free transverse flap material 1, 1 of the present invention to ensure the fastening of the free transverse flap material 1, 1 by the tightening nut 73.

[0027]

[Effect] The flexible horizontal fluttering material for supporting a concrete formwork of the present invention having the above-described structure is provided with a flexible plastic pipe such as a vinyl chloride pipe and a hollow body filled and integrated with the flexible plastic pipe. It is made of a pressure-resistant lightweight core body, and secures sufficient pressure-resistant strength and rigidity as a flutter material in a flexible plastic tube, and is lightweight and can be freely bent at the site along with a curved formwork. It is made of a structure that can be deformed, compared to the conventional steel flutter material,
In addition to being able to transport, install and remove work by a small number of workers, it has an elastic restoring force and has the added advantage that it can be handled as a nearly straight rod before installation and after removal. It is advantageous from the viewpoint of inventory control and, in turn, the handling at the manufacturing stage, and since it returns to a linear rod-shaped body, it can be used for other purposes with different curved wall shapes without disposable. It has extremely excellent features, such as being able to be reused repeatedly on site.

The flexible horizontal flap material for supporting a concrete form, which has a structure representative of the present invention, which is lifted in the embodiment, exhibits all the above-described features, and in particular, the flexible horizontal flap shown in the first embodiment. The flutter material 1 is a flexible pressure-resistant lightweight core 3
Is replaced with a flexible plastic tubular body 2 hollow part 2 made of vinyl chloride.
Injection, foaming, and integration using self-adhesiveness of the resin stock solution into 1 make it possible to provide a high-productivity, high-quality product, and inexpensive products. In the embodiment 2 shown in FIG. 3, not only the self-adhesive property due to resin foaming is utilized, but also a core made of a hard foamed urethane synthetic resin having a relatively high density is provided at the center of the flexible pressure-resistant lightweight core body 3. The structure in which the rods 31 are disposed makes it possible to realize the flexible horizontal flap material 1 having higher pressure resistance and rigidity without hindering flexibility.

Further, the flexible horizontal fluttering material 1 of the third embodiment shown in FIG.
As a result of imparting fluidity as being composed of 3, 33,..., It is possible to obtain the effect of making the flexible plastic tube 2 easily bendable while reinforcing the pressure resistance and rigidity, and Also, the formation of the flexible pressure-resistant lightweight core 3 also has an advantage that no special technique is required. In addition, in the case of the flexible horizontal fluttering material 1 of Examples 4 and 5 shown in FIGS. As compared with the third embodiment, the formation of the flexible pressure-resistant lightweight core 2 is simplified, and each piece 4
4, ..., or 5,5, ... length, material density, etc. are partially changed so that the bending deformation of the part is made easier than other parts without substantially affecting the pressure resistance and rigidity.
It is also possible to make it suitable for a horizontal fluttering material for a curved wall whose curvature changes greatly.

As described above, the flexible horizontal flap material for concrete formwork support of the present invention is extremely suitable as a lateral flap material in concrete support for a concrete curved wall because of its characteristic structure, and is suitable for on-site work. A major feature is that it greatly enhances efficiency, is easy to manufacture, is advantageous in terms of handling as a product such as storage, loading, unloading, and transporting, and moreover, it can be used repeatedly for curved walls that differ from site to site. The construction and civil engineering and construction materials industries, as well as the construction Has been highly evaluated for its utility and economic efficiency by public stakeholders and private owners. Is employed as data material, it is expected to continue to spread greatly.

[Brief description of the drawings]

The drawings show several representative embodiments which embody the free transverse flaps for concrete formwork support of the present invention.

FIG. 1 is a perspective view of an essential part of a free horizontal flap material for supporting a concrete formwork best representing the present invention.

FIG. 2 is a vertical cross-sectional view of a form supporter employing the same horizontal flap material.

FIG. 3 is a perspective view passing through a shaft core of a free transverse flap material for supporting a concrete formwork of another embodiment.

FIG. 4 is a vertical cross-sectional view of a freely flap material according to another embodiment, shown in the same manner as in FIG.

FIG. 5 is a vertical cross-sectional view of a free horizontal flap according to yet another embodiment, shown in the same manner as in FIG. 3;

FIG. 6 shows a still further embodiment according to FIG.
It is a longitudinal cross-sectional view shown similarly to.

FIG. 7 is a perspective view showing a viaduct as an example of a concrete building requiring a formwork support by a curved formwork when viewed from below.

FIG. 8 is a perspective view showing an example of a formwork support for a curved wall constructed as a wall in a park or the like.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Horizontal fluttering material 2 Flexible plastic pipe 21 Same hollow part 22 Same cap 23 Same sealing plug 3 Flexible pressure-resistant lightweight core body 31 Same core rod body 32 Same cylindrical body 33 Same granular body 4 Piece body 5 piece Body 51 Same convex connection part 52 Same concave connection part 6 Cast concrete 61 Same viaduct 7 Separator 71 Same cone 72 Same form tie 73 Same nut 74 Same washer 8 Form 81 Same form panel 82 Same form panel 81 facing the form panel 81 Formwork panels arranged in a shape 9 Vertical flutter

Claims (8)

[Claims] 1. A flexible pressure-resistant lightweight core body for enhancing pressure resistance and rigidity is filled and integrated into a hollow portion of a flexible plastic pipe body such as a vinyl chloride pipe having a predetermined thickness and an outer diameter. A flexible horizontal fluttering material for supporting a concrete formwork, which is lightweight and capable of being deformed and cut on site. 2. A flexible pressure-resistant lightweight core body is filled and integrated into a flexible plastic tube hollow portion such as a vinyl chloride tube formed to a predetermined thickness and an outer diameter, and a form panel is separated by a predetermined distance. Strengthening the pressure resistance for connecting the form fixing fixtures such as foam ties, etc., and the rigidity for preventing the deformation of the form panel due to the cast concrete pressure. A horizontal flap material for concrete formwork support. 3. A fluttering material for a concrete form support for a curved wall body of a concrete structure, which can be attached to a curved outer surface of a form panel assembled to a concrete casting surface. In order to maintain the pressure resistance for connecting the frame fixing bracket such as a foam tie that holds the frame panel at a predetermined interval, a flexible portion is formed in the hollow portion of a flexible plastic tube such as a vinyl chloride tube. A flexible horizontal fluttering material for supporting a concrete formwork, characterized in that it is filled and integrated with a pressure-resistant lightweight core so that it can be lightweight and deformed and cut in place. 4. A rigid foam synthetic resin stock solution is injected into a hollow portion of a flexible plastic tube such as a vinyl chloride tube and foamed, and is made of a self-adhesive flexible plastic tube and a rigid foam synthetic resin. The flexible horizontal flap material for concrete form support according to any one of claims 1 to 3, wherein the material is integrated with a flexible pressure-resistant lightweight core body. 5. A rod-shaped body having a smaller diameter than a hollow part of a flexible plastic pipe such as a vinyl chloride pipe,
A core rod made of a relatively high-density hard foamed synthetic resin is arranged substantially concentrically, and a hard foamed synthetic resin stock solution is injected between the core rod and the inner peripheral surface of the flexible plastic tube hollow portion. 2. A flexible pressure-resistant lightweight core made of a hard foam synthetic resin having a two-layer structure, which is formed by foaming and integrating the core rod into the hollow portion of the flexible plastic tube with its self-adhesiveness. 4. A flexible horizontal fluttering material for supporting a concrete formwork according to any one of claims 3 to 3. 6. The flexible pressure-resistant lightweight core body is made of a fluid lightweight material such as a plurality of granules or powder, and the flowable material is discharged to both ends of the flexible plastic tube. 4. The flexible horizontal flap material for supporting a concrete formwork according to claim 1, further comprising a sealing cap or a sealing plug for preventing the sealing. 7. The flexible pressure-resistant lightweight core body is composed of a plurality of barrel-shaped pieces having a diameter slightly smaller than the inner diameter of the flexible plastic pipe, and these barrel-shaped pieces are provided at both ends thereof. The surface was formed into a relatively smooth and gentle spherical shape or an elliptical spherical shape, and the end surfaces of the flexible plastic tube were filled in an abutting manner so as to be connected in a bead shape. 4. The free horizontal flap material for supporting a concrete formwork according to any one of claims 1 to 3. 8. The flexible pressure-resistant lightweight core body is composed of a plurality of barrel-shaped pieces having a diameter slightly smaller than the inner diameter of the flexible plastic pipe. One end that is formed into a convex connection part and the other end surface is formed into a concave connection part that can be fitted to the previous convex connection part, and can be bent like a rosary in a flexible plastic tube hollow part. 4. The flexible horizontal fluttering material for supporting a concrete formwork according to claim 1, wherein the material is connected and loaded in a shape.