WO2019151576A1

WO2019151576A1 - Noise-reducing ultra-lightweight high-strength concrete mold frame

Info

Publication number: WO2019151576A1
Application number: PCT/KR2018/004536
Authority: WO
Inventors: 강경인; 김명호
Original assignee: 강경인; 김명호
Priority date: 2018-02-02
Filing date: 2018-04-19
Publication date: 2019-08-08

Abstract

The present invention relates to a noise-reducing ultra-lightweight high-strength concrete mold frame, and provides a noise-reducing ultra-lightweight high-strength concrete mold frame comprising: a rectangular outer frame having a pair of first outer frame members arranged to face each other, and a pair of second outer frame members respectively arranged at both ends of the first outer frame members; an inner frame having corner brackets respectively arranged at the corners of the outer frame so as to connect and fix the first outer frame members and the second outer frame members, a first inner frame member, which is disposed at the inner side of the outer frame, for connecting the pair of first outer frame members, and a second inner frame member intersection-coupled to the first inner frame member such that the pair of second outer frame members can be connected; and inner and outer frame fastening brackets for connecting and fixing the inner frame and the outer frame, wherein the first inner frame member and the second inner frame member are fastened to each other by cross lap joining, and the fastened portion thereof is fixed by means of joining or fastening pieces, thereby being lightweight, having high strength, and being manufactured at low cost.

Description

Noise Reduction Ultralight High Strength Concrete Formwork Frame

The present invention relates to a noise reduction type ultra lightweight high strength concrete formwork frame, and more particularly, to a noise reduction type ultra lightweight high strength concrete formwork frame capable of mass production at a low cost as well as lightness, strength and low noise. will be.

Generally, the formwork is a structure used to construct a concrete structure in a predetermined form, and includes a frame and a panel attached to one side of the frame.

In this case, the frame is composed of an outer frame having a rectangular structure and an inner frame coupled to the inside of the outer frame so as to stably support the panel.

The frame is manufactured using various materials such as wood, iron, aluminum, etc. The wood frame is weak in durability and difficult to be used repeatedly for a long time, and the steel frame is excellent in durability and can be used many times, but the weight is heavy and the workability is low.

In order to make up for the shortcomings of the wood frame and the steel frame as described above, an aluminum frame having a light and excellent strength has been developed and used. High, there is a problem that emits more than five times more carbon dioxide (CO ₂ ) than iron in the manufacturing stage.

Meanwhile, in the case of the formwork frame according to the prior art, the outer frame and the inner frame are joined to each other by welding, so that when the formwork is dropped during the formwork of the formwork, the impact energy generated by collision with the ground is transmitted to the frame and the frame is damaged. There is an issue that is easy to become or twist.

The present invention has been made to solve the above-mentioned problems of the prior art, has a significantly lighter and superior strength compared to the existing formwork frame, less noise generation and low-cost ultra-lightweight high strength concrete formwork frame that can be mass produced at low cost The purpose is to provide.

In addition, another object of the present invention is to provide a noise reduction type ultra-light weight high strength concrete formwork frame that can effectively minimize the deformation, breakage and noise by dispersing the impact energy generated by the drop impact when demolding the formwork.

As a means for solving the above technical problem,

The present invention includes a rectangular outer frame having a pair of first outer frame members disposed to face each other, and a pair of second outer frame members disposed at both ends of the first outer frame member; Corner brackets disposed at corners of the outer frame to connect and fix the first outer frame member and the second outer frame member; Is disposed inside the outer frame, the first inner frame member for connecting the pair of the first outer frame member and the first inner frame member cross-coupled to connect the pair of second outer frame members An inner frame having a second inner frame member capable of being opened; And an inner / outer frame fastening bracket for connecting and fixing the inner frame and the outer frame, wherein the first inner frame member and the second inner frame member are fastened to each other by cross-jaw alignment. It provides a noise reduction type ultra lightweight high strength concrete formwork frame.

In this case, a fastening portion of the first inner frame member and the second inner frame member may be joined.

In this case, groove portions are formed at the lower portion of the first inner frame member and the upper portion of the second inner frame member, respectively, and the groove portion is formed at cross-thickness alignment in a state where an assembly core having a shape corresponding to the groove portion is inserted therein. The first inner frame member, the assembly core and the second inner frame member may be fixed by fasteners.

In this case, the outer frame is composed of a pair of metal plates, the pair of metal plates may be shimmed at both ends so that a hollow is formed therein.

In this case, the hollow may be inserted into the core made of any one or more materials selected from plastic, wood, composite materials.

In this case, the outer frame or the inner and outer frame fastening bracket may be made of aluminum alloy or engineering plastic.

In this case, the first outer frame member or the second outer frame member is composed of a pair of frame members, the pair of frame members can be connected, fixed by a connection bracket.

In this case, the corner bracket includes an inner corner bracket and an outer corner bracket having an A-shaped cross-section structure coupled to inner and outer sides of the first outer frame member and the second outer frame member, respectively, and the inner corner bracket and the outer corner bracket. Corner cores may be inserted into the corners between the corner brackets.

In this case, each side of the inner corner bracket is bulging, the bulging processing portion may be coupled to the first outer frame member and the second outer frame member, respectively.

In this case, one end of the inner and outer frame fastening bracket may be inserted into the inner end of the inner frame, the other end may be coupled to the outer frame.

In this case, the other end of the inner and outer frame fastening bracket is bent in the outer direction and bulging process, the bulging processing portion may be combined with the outer frame.

In this case, a wedge pin fastening hole communicating with the inner frame is formed in the outer frame, and an end of the inner frame and an upper surface of the inner and outer frame fastening brackets are opened to enable the fastening and dismantling of the wedge pin. Can be.

In this case, the noise reduction type ultra-light weight high strength concrete formwork frame may further include a wedge pin intrusion prevention plate for connecting the upper end of one end of the inner and outer frame fastening bracket and the inner bottom of the outer frame.

In this case, the wedge pin entrance preventing plate may be curved concave downward.

In this case, ribs may be formed on both sides of the wedge pin fastening hole to prevent leakage of concrete.

In this case, any one or more of the outer frame, the corner bracket, the inner frame and the inner and outer frame fastening brackets may be made of ultra steel or twipe steel having a tensile strength of 700 MPa or more.

In this case, the panel may be fastened to the outer frame or the inner frame using any one of bolts, bolts and rivet nuts, and rivets.

According to the present invention, at least one or more of an outer frame, an inner frame, a corner bracket, and an inner / outer frame fastening bracket may be made of ultra steel or twipe steel having a tensile strength of 700 MPa or more, thereby improving strength.

In addition, the outer frame is composed of a core is inserted into a pair of metal plates in which both ends are seamed, and the first inner frame member and the second inner frame member of the inner frame are fastened in a cross-tagged manner to manufacture. There is an easy advantage.

In addition, a fastening portion of the first inner frame member and the second inner frame member is joined, or the first inner frame member and the second inner frame member are fixed by fasteners using assembly cores, thereby allowing simple and rapid manufacturing. .

In addition, the open end of the inner frame and the upper surface of the inner and outer frame fastening brackets communicating with the wedge pin fastening hole can secure a working space for fastening and disengaging the wedge pin.

In addition, since the wedge pin inlet prevention plate is installed inside the inner and outer frame fastening brackets to block the passage to the inner frame, the wedge pins scattered during the fastening and dismantling of the wedge pins do not enter the inner frame, thereby improving productivity. Can be.

In addition, since the outer frame, the inner frame and the corner bracket are fastened by rivets or bolts, the impact energy generated when the ground falls during the demoulding process can be effectively distributed to minimize damage or deformation. The assembly structure allows for simple replacement and reuse of damaged or damaged frames and panels.

In addition, the corner core is inserted between the inner corner bracket and the outer corner bracket connecting the edges of the outer frame to mitigate the impact caused by the dropping of the formwork and to reduce the noise. have.

1 is a perspective view of a noise reduction type ultralight high strength concrete formwork frame according to a preferred embodiment of the present invention;

FIG. 2 is an exploded perspective view of the noise reduction type ultralight high strength concrete formwork frame shown in FIG. 1;

Figure 3 is a perspective view of a noise reduction type ultra lightweight high strength concrete formwork frame according to another preferred embodiment of the present invention,

4 is an exploded perspective view of the noise reduction type ultralight high strength concrete formwork frame shown in FIG.

5 is a cross-sectional structural view of the outer frame of the noise reduction type ultralight high strength concrete formwork frame shown in FIG.

Figure 6 is a view showing another embodiment of the outer frame of the noise reduction type ultra-light weight high strength concrete formwork frame shown in Figure 1,

7 is an enlarged view of a portion D of FIG. 6;

8 is an enlarged view of a portion A of FIG. 2;

9 is an enlarged view of a portion B of FIG. 2;

10 is an enlarged view of a portion C of FIG. 4;

11 is a cross-sectional view taken along the line I-I of FIG.

12 is a cross-sectional view showing a coupling structure of a frame and a panel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

1 is a perspective view of a noise reduction type ultra lightweight high strength concrete formwork frame according to a preferred embodiment of the present invention, Figure 2 is an exploded perspective view of the noise reduction type ultra lightweight high strength concrete formwork frame shown in Figure 1, Figure 3 is another preferred embodiment of the present invention 4 is a perspective view of a noise reduction type ultra lightweight high strength concrete formwork frame according to an embodiment, FIG. 4 is an exploded perspective view of the noise reduction type ultra lightweight high strength concrete formwork frame shown in FIG. 3, and FIG. 5 is a noise reduction type ultra lightweight high strength concrete formwork shown in FIG. 1. Figure 6 is a cross-sectional structural view of the outer frame of the frame, Figure 6 is a view showing another embodiment of the outer frame of the noise reduction type ultra-lightweight high strength concrete formwork frame shown in Figure 1, Figure 7 is an enlarged portion D of Figure 6, 2 is an enlarged view of part A, FIG. 9 is an enlarged view of portion B of FIG. 2, FIG. 10 is an enlarged view of portion C of FIG. 4, and FIG. 11 is a II cross-sectional structure of FIG. 1. 12 is a cross-sectional view showing a coupling structure of a frame and a panel.

1 to 12, the noise reduction type ultra-light weight high strength concrete formwork frame 100 (hereinafter, referred to as the 'frame 100') according to a preferred embodiment of the outer frame 110 and the corner bracket 120, the inner frame 130 and the inner and outer frame fastening bracket 140.

The outer frame 110 is composed of a first outer frame member 111 and a second outer frame member 112. A pair of first outer frame members 111 are provided so as to face each other at a predetermined interval, and a pair of second outer frame members 112 are similarly provided at both ends of the first outer frame member 111. That is, the first outer frame member 111 and the second outer frame member 112 have a rectangular structure as a whole.

Through holes (110a) used for coupling the corner bracket (120), the inner frame (130), the inner and outer frame fastening brackets (140) to the first outer frame member (111) and the second outer frame member (112). And, the wedge pin fastening hole (110b) used to connect the frame 100 and the adjacent frame with the wedge pin at the time of installation of the form is formed a plurality of predetermined intervals.

The outer frame 110 is made of ultra steel or twipe steel having a tensile strength of 700 MPa or more to enable lightweight while realizing excellent strength.

In addition, the outer frame 110 has a shape in which both end portions of the metal plates 110 'and 110 "disposed to face each other at regular intervals as shown in FIG. 5 are seamed. Thus, the metal plate 110' Forming the outer frame 110 by seaming the (110 ") in the seaming method has the advantage that it can be quickly manufactured at a lower cost than welding. The seaming portion may be formed on the inner side (see (a) of FIG. 5), the outer side (see (b) of FIG. 5) or the upper and lower portions (see (c) of FIG. 5) of the outer frame 110, and is not particularly limited. .

The core 113 may be inserted into the shimmed metal plates 110 ′ and 110 ″. The core 113 is made of at least one material selected from plastic, wood, and composite materials, thereby forming the outer frame 110. You can improve the strength while lowering the weight of).

The outer frame 110 may be configured in a solid form, as described above. For example, the outer frame 110 may be made of an engineering plastic containing 40% or more of chopped strand (chopped glass fiber) of 4 ~ 8 mm. The outer frame 110 has a tensile strength of 250 MPa or more, flexural strength of 370 MPa or more, flexural elasticity of 12,000 MPa or more, and impact strength of 50 kJ / m ² and 90 kJ / m ² or more, respectively. In addition, the outer frame 110 may be manufactured by extruding an aluminum alloy having a tensile strength of 270 MPa or more.

When the engineering plastic is used, the second outer frame member 112 may be composed of two frame members as shown in FIG. 6. That is, the second outer frame member 112 is manufactured by injecting engineering plastics. Since the length of the second outer frame member 112 is long, the injection mold is large and expensive injection equipment is required to integrally inject the second outer frame member 112. Therefore, in the present invention, the second outer frame member 112 is composed of two frame members to enable injection using conventional injection equipment, and each frame member is connected to the connecting bracket 114 to the rivet 115. Can be fixed For reference, although only the second outer frame member 112 has been described as an example, the first outer frame member 111 may be configured in the same manner as described above when an excessive cost is required to integrally eject the first outer frame member 111.

When manufacturing the outer frame 110 by injecting engineering plastic ribs (110c) may be formed on both sides of the wedge pin fastening hole (110b) as shown in FIG. The rib 110c prevents the concrete from leaking along the longitudinal direction of the outer frame 110. That is, when constructing a wall, such as a building, the formwork and the formwork are installed at regular intervals facing each other, interconnected with a flat tie, and then fixed by fixing the wedge pin fastening hole (110b) and the flat tie. Thereafter, when the concrete is poured between the formwork and the formwork, the concrete leaks through the fastening portion of the flat tie, and the leaked concrete flows along the side of the outer frame 110 and is firmly solidified with time. Therefore, in order to reuse the formwork it is necessary to remove all the hard concrete, there is a problem that takes too much time and money. Thus, in the present invention, the ribs 110c are formed on both sides of the wedge pin fastening hole 110b to block the flow of the leaked concrete.

Corner brackets 120 are disposed at the edges of the outer frame 110, respectively, to connect and fix the first outer frame member 111 and the second outer frame member 112. Specifically, the corner bracket 120 is bent in the form of the letter L, the bent portion by the bulging process, one side of the bulging portion is coupled to the through-hole (110a) of the first outer frame member 111, the other side is the second outer frame It is coupled to the through hole 110a of the member 112.

In this case, the corner bracket 120 includes an inner corner bracket 121 coupled to the inner side of the first outer frame member 111 and the second outer frame member 112, the first outer frame member 111, and the second outer frame member 111. It may be composed of an outer corner bracket 122 coupled to the outside of the outer frame member 112, the inner corner bracket 121 and the outer corner bracket 122 is fastened to each other by a rivet 124 or bolt.

When configured as described above, the corners of the first outer frame member 111 and the second outer frame member 112 are firmly fixed inside and outside by the inner corner bracket 121 and the outer corner bracket 122. Even if an impact is applied due to the dropping of formwork, damage or distortion can be minimized.

A panel fastening portion 121a (see FIGS. 1 and 2) is formed at a lower end of the inner corner bracket 121, and a panel 10 is attached to a bolt 125 or a rivet on a lower surface of the panel fastening portion 121a. Is fastened by For reference, the panel 10 is preferably a water resistant plywood, coated plywood, or a sandwich structure made of foamed, non-foamed plastics, FRP, composite materials, etc., but is not particularly limited.

Meanwhile, the corner core 123 may be interposed between the inner corner bracket 121 and the outer corner bracket 122 as shown in FIG. 8. The corner core 123 absorbs shocks during formwork and transport of formwork, suppresses noise, and prevents surface damage of the panel 10 due to cornering, and is made of a material such as synthetic rubber and engineering plastic. And a

head part

123b and 123c formed at an upper end and a lower end of the body part 123a.

In this case, the body portion 123a is recessed and formed in a shape corresponding to the inner edge of the inner corner bracket 121 and the inner corner of the outer corner bracket 122, respectively, the inner side and the outer side of the head portion 123b and 123c. ) Has a stepped structure for

Therefore, the first outer frame member 111, the second outer frame member 112 and the corner core 123 are interposed between the inner corner bracket 121 and the outer corner bracket 122, and then rivet 124 or bolt. When fastened, the body part 123a is formed between the corners of the inner corner bracket 121 and the outer corner bracket 122, and the

head parts

123b and 123c are exposed to the outside.

Therefore, the corner core 123 is prevented from being separated in the horizontal direction by the pressing force of the inner corner bracket 121 and the outer corner bracket 122 fastened by the rivet 124, and in this state, the head portion 123b ( 123c is caught by the inner corner bracket 121 and the outer corner bracket 122, thereby limiting vertical movement, thereby preventing the vertical direction from being separated.

The inner corner bracket 121 and the outer corner bracket 122 may be made of ultra steel or twipe steel having a tensile strength of 700 MPa or more.

The inner frame 130 has a hollow structure inside and is disposed inside the outer frame 110, and has a first inner frame member 131 and a second inner member made of ultra-steel or twipe steel having a tensile strength of 700 MPa or more. It consists of a frame member 132.

The first inner frame member 131 is disposed along the longitudinal direction of the frame 100 to connect and support the first outer frame member 111 facing each other, and the second inner frame member 132 faces each other. It is disposed along the width direction of the frame 100 so that the second outer frame member 112 to be connected and fixed.

In this case, a plurality of second inner frame members 132 may be provided at regular intervals in consideration of the size of the frame 100, and in this case, three second inner frame members 132 are disposed at equal intervals. An example will be described.

In the present invention, the second inner frame member 132 intersects with the first inner frame member 131 and is fastened in a cross half-fitting manner. That is, as illustrated in FIG. 9,

grooves

131a and 132a are formed at the lower end of the first inner frame member 131 and the upper end of the second inner frame member 132, respectively, and the

grooves

131a and 132a are formed. ) Is fitted to each other to combine the first inner frame member 131 and the second inner frame member 132.

Since the

grooves

131a and 132a have a depth corresponding to half of the thickness of the first inner frame member 131 and the second inner frame member 132, when the

grooves

131a and 132a are fitted to each other, The intersection of the two inner frame members 132 does not protrude to form a plane.

The fastening portions of the

groove portions

131a and 132a fitted in the cross-half alignment method are firmly fixed by joining by welding or the like.

On the other hand, the first inner frame member 131 and the second inner frame member 132 that are coupled in a cross half-fitting manner may be fixed by fasteners.

3, 4, and 10, as described above,

grooves

131a and 132a are formed on the lower end of the first inner frame member 131 and the upper end of the second inner frame member 132, respectively. The assembling

cores

133 and 134 corresponding to the

grooves

131a and 132a are respectively inserted into the

grooves

131a and 132a, and in this state, the

grooves

131a and 132a are fitted to each other. The

grooves

131a and 132a and the

assembly cores

133 and 134 are integrally fixed by the

fasteners

135 and 136.

The assembling

cores

133 and 134 have a U-shaped cross-sectional structure, and through

holes

133a and 134a are formed to allow fasteners to be inserted into the center thereof. In the case of the

assembly cores

133 and 134, the first inner frame member 131 and the second inner frame member 132 having a hollow structure are inserted inwards and positioned in the

groove portions

131 a and 132 a. The material of the

assembly cores

133 and 134 may be selected from plastic, aluminum, and composite materials.

The fasteners for fixing the

grooves

131a and 132a and the

assembly cores

133 and 134 are preferably bolts 135 and nuts 136, but other fasteners besides bolts and nuts may be applied. It must be understood.

On the other hand, the end of the inner frame 130, the upper surface is opened so that the wedge pin can be fastened and dismantled, this will be described in detail later.

The inner and outer frame fastening brackets 140 are for connecting and fixing the outer frame 110 and the inner frame 130 and are made of ultra steel or twipe steel having a tensile strength of 700 MPa or more.

One end of the inner and outer frame fastening bracket 140 is inserted into the inner frame 130 to be fixed by bonding, welding or riveting or bolting, and the other end is coupled to the outer frame 110 to rivet 141. Or by bolts. In this case, the other end of the inner and outer frame fastening bracket 140 is bent in the outward direction, and the bent portion is bulged, so that the bulging portion is inserted into the through hole 110a of the outer frame 110 and then rivet 141. When coupled to the inner and outer frame fastening bracket 140, it is preferable to improve the structural rigidity and assembly precision.

The inner and outer frame fastening bracket 140 may be manufactured by die casting ADC 10 aluminum alloy having a tensile strength of 300 MPa or more, or may be manufactured by injecting engineering plastic containing 40% or more of strands. The internal and external frame fastening brackets 140 have a tensile strength of 250 MPa or more, flexural strength of 370 MPa or more, flexural elasticity of 12,000 MPa or more, and impact strength of 50 kj / m ² or 90 kj / m ² or more, respectively, depending on the presence or absence of a notch. Has

The inner and outer frame fastening brackets 140 are installed at positions where the wedge pin fastening holes 110b are formed in the outer frame 110. In this case, the upper surface and the rear end surface of the inner and outer frame fastening bracket 140 can be inserted into the wedge pin fastening hole (110b) to connect the formwork adjacent to the formwork or to separate the formwork by dismantling the wedge pin. So that it is open.

However, the fastening and disassembly of the wedge pin is carried out in the state in which the inner frame 130 is coupled to the outer frame 110, so that when the wedge pin enters the inner frame 130 by the wedge pin, the wedge pin is pulled out. There is a problem in that the installation or dismantling time of the formwork is delayed. In order to solve this problem, in the present invention, the wedge pin anti-entry plate 150 is provided inside the inner and outer frame fastening bracket 140.

As shown in FIG. 11, the wedge pin ingress preventing plate 150 connects an upper end of one end of the inner and outer frame fastening bracket 140 and an inner lower end of the outer frame 110. In this way, if the wedge pin entrance preventing plate 150 is installed, a space for fastening and dismantling the wedge pin can be secured above the wedge pin entrance preventing plate 150 and at the same time, the inner frame (b) is provided from the wedge pin fastening hole 110b. The passage leading to the center of 130 is blocked.

Therefore, even when the wedge pin is scattered due to the blow or the like during the fastening or dismantling of the wedge pin, it is not necessary to introduce the wedge pin again because the wedge pin is not drawn into the inner frame 130. Can be significantly shortened.

The wedge pin intrusion prevention plate 150 is preferably curved concave downward. This is because when the wedge pin entrance preventing plate 150 is bent downwardly concave, more space can be secured by the curved portion than in the case of a flat surface, so that the wedge pin can be fastened and dismantled more easily.

In addition, a fastener such as a bolt 125 for fixing the panel 10 to the inner frame 130 is positioned below the wedge pin intrusion preventing plate 150 (see FIG. 11). In this case, the bolts 125 must be dismantled and removed before the new panel can be attached. To this end, a fastener outlet hole 150a is formed at a lower portion of the wedge pin intrusion preventing plate 150. Since the fastener outlet hole 150a is formed at a position corresponding to the bolt 125, the dismantled bolt 125 may be easily removed through the fastener outlet hole 150a when the panel 10 is replaced.

On the other hand, the material of the wedge pin entrance preventing plate 150 is not particularly limited, but is preferably made of plastic in order to reduce the formwork and reduce the manufacturing cost.

For reference, when fixing the panel 10 to the outer frame 110 or the inner frame 130, as shown in Figure 12 using a bolt 125 (see (a) of Figure 12), or bolt ( 125 and the rivet nut 126 may be used (see FIG. 12B), or the rivet 127 may be used (see FIG. 12C).

Preferred embodiments of the present invention have been described in detail above with reference to the drawings. The description of the present invention is for illustrative purposes, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is represented by the following claims rather than the detailed description, and all changes or modifications derived from the meaning, scope, and equivalent concepts of the claims are included in the scope of the present invention. Should be interpreted as

Claims

A rectangular outer frame having a pair of first outer frame members disposed to face each other, and a pair of second outer frame members disposed at both ends of the first outer frame member;

Corner brackets disposed at corners of the outer frame to connect and fix the first outer frame member and the second outer frame member;

Is disposed inside the outer frame, the first inner frame member for connecting the pair of the first outer frame member and the first inner frame member cross-coupled to connect the pair of second outer frame members An inner frame having a second inner frame member capable of being opened; And

An inner and outer frame fastening bracket for connecting and fixing the inner frame and the outer frame;

Including,

The noise reduction type ultra-light weight high strength concrete formwork frame, characterized in that the first inner frame member and the second inner frame member is fastened to each other by cross-jaw alignment.
The method of claim 1,

Ultra-low strength high strength concrete formwork frame, characterized in that the fastening portion of the first inner frame member and the second inner frame member is joined.
The method of claim 1,

Grooves are formed in the lower portion of the first inner frame member and the upper portion of the second inner frame member, respectively, and the grooves are fitted to each other by cross half-tripping in a state where an assembly core having a shape corresponding to the groove is inserted therein. And the first inner frame member, the assembly core and the second inner frame member are fastened by fasteners.
The method according to any one of claims 1 to 3,

The outer frame is made of a pair of metal plate, the pair of metal plate is noise reduction ultra lightweight high strength concrete formwork frame, characterized in that both ends are seamed so that a hollow can be formed therein.
The method of claim 4, wherein

The hollow, noise reduction, ultra-lightweight high strength concrete formwork frame, characterized in that the core is inserted into the hollow made of any one material selected from plastics, wood, composite materials.
The method according to any one of claims 1 to 3,

The outer frame or the inner and outer frame fastening bracket is a noise reduction ultra lightweight high strength concrete formwork frame, characterized in that made of aluminum alloy or engineering plastic.
The method of claim 6,

The first outer frame member or the second outer frame member is made of a pair of frame members, the pair of frame members is connected to a fixed bracket by a low noise ultra lightweight high strength concrete formwork frame .
The method according to any one of claims 1 to 3,

The corner bracket includes an inner corner bracket and an outer corner bracket having a cross-section structure of an L-shape which are coupled to the inner and outer sides of the first outer frame member and the second outer frame member, respectively, between the inner corner bracket and the outer corner bracket. The corner of the corner is inserted into the corner noise-reducing ultra lightweight high strength concrete formwork frame.
The method of claim 8,

Each side of the inner corner bracket is bulging, noise-reducing ultralight high strength concrete formwork frame, characterized in that the bulging processing portion is coupled with the first outer frame member and the second outer frame member, respectively.
The method according to any one of claims 1 to 3,

One end of the inner and outer frame fastening bracket is inserted into the inner end of the inner frame, the other end is coupled to the outer frame noise reduction type ultra lightweight high strength concrete formwork frame.
The method of claim 10,

The other end of the inner and outer frame fastening bracket is bent in the outer direction is bulging process, the noise reduction ultra lightweight high strength concrete formwork frame, characterized in that coupled to the outer frame.
The method of claim 10,

A wedge pin fastening hole is formed in the outer frame to communicate with the inner frame, and an end of the inner frame and an upper surface of the inner and outer frame fastening brackets are opened to enable the fastening and dismantling of the wedge pin. Lightweight, high strength concrete formwork frame with low noise.
The method of claim 12,

Noise reduction type ultra-light weight high strength concrete formwork frame further comprises a wedge pin inlet preventing plate for connecting the upper end of the inner and outer frame fastening bracket and the inner bottom of the outer frame.
The method of claim 13,

The wedge pin anti-entry plate is a noise reduction type super lightweight high strength concrete formwork frame, characterized in that curved downwardly.
The method of claim 12,

Ultra low strength high strength concrete formwork frame, characterized in that ribs are formed on both sides of the wedge pin fastening hole to prevent the leakage of concrete.
The method according to any one of claims 1 to 3,

One or more of the outer frame, the corner bracket, the inner frame, and the inner and outer frame fastening brackets are made of ultra- or twipe steel having a tensile strength of 700 MPa or more. Concrete formwork frame.
The method according to any one of claims 1 to 3,

Ultra low strength high strength concrete formwork frame, characterized in that the panel is fastened to the outer frame or the inner frame using any one of bolts, bolts and rivet nuts, rivets.