KR102325067B1 - Prefabricated Beam Structure with Concrete Form - Google Patents

Abstract

The present invention relates to a formwork prefabricated beam structure, and more particularly to the formwork prefabricated beam structure that has excellent fire resistance by suppressing heat transfer to the inside of the structure, and has improved structural joints and improved manufacturability. The formwork prefabricated beam structure includes a plurality of longitudinal angles; a transverse angle; a deck support member; a formwork body; a support angle; and a reinforcing bar member.

Description

Prefabricated Beam Structure with Concrete Form}

The present invention relates to a formwork prefabricated beam structure, and more particularly, to a formwork prefabricated beam structure having excellent fire resistance by suppressing heat transfer to the inside of the structure, improving structure joints and improving manufacturability will be.

Formwork is a structure that is cured and supported by pouring unhardened concrete until it reaches the desired strength, and is removed after the concrete is cured. However, the installation process and dismantling process of the formwork takes a considerable amount of time, and there is a problem that additional equipment such as a crane is required due to its own weight.

To improve this, an NRC structure that pre-assembles the reinforcing bars of the formwork and supplies it to the site has been developed, and furthermore, a permanent formwork that does not remove the formwork after curing the concrete is being developed. Patent Document 1, which is a related patent, is an invention filed by the applicant of the present invention. It is easy to handle by using a steel material with a 'L'-shaped cross-section as a main bar, so it is easy to assemble, and a formwork that can improve straightness and improve construction precision. Disclosed is a prefabricated beam structure. This corresponds to a structure based on reinforced concrete, and has the advantage of preventing safety accidents due to deformation or collapse of the formwork.

However, since the structure is formed in the form of a panel, it includes a joint by welding and bolting, and when a fire occurs in the structure, the joint deteriorates and the support performance is lowered around it, resulting in safety accidents such as collapse There are problems that may arise.

In addition, in a structure in which 'L'-shaped cross-section steel is welded to the formwork by surface contact, the heat generated by the fire is easily transferred to the inside of the structure, and the bearing capacity of the metal member and reinforcing bar disposed inside the structure is lowered. There is this.

US 10-1683670 B1

An object of the present invention is to provide a formwork prefabricated beam structure having excellent fire resistance by suppressing heat transfer to the inside of the structure, improving structure joints and improving manufacturability.

In order to solve the above problems, the present invention provides a formwork prefabricated beam structure, comprising: a plurality of longitudinal angles disposed at positions corresponding to a plurality of corners and extending in the longitudinal direction; a transverse angle including an L-shaped cross-section, disposed outside the longitudinal angle and extending in the transverse direction; a deck receiving member including a L-shaped cross-section, disposed outside the upper side of the transverse angle and extending in the longitudinal direction; and a formwork body enclosing both sides of the beam and the bottom surface, wherein the inner flange surface of the transverse angle is welded to the outer flange surface of the longitudinal angle by surface contact, and The outer end surface is welded in line contact to the inner surface of the flange surface of the deck receiving member and the inner surface of the formwork body, and a part of the flange surface of the lower side of the deck receiving member is a part of the upper surface of the formwork body and Provided is a formwork prefabricated beam structure that is welded to each other.

In some embodiments of the present invention, the cross-section of the transverse angle includes a first flange extending in a longitudinal direction, and a second flange extending outwardly, and the length of the first flange is the length of the second flange. could be shorter.

In some embodiments of the present invention, the interval between the flange surface of the outer side of the longitudinal angle and the inner flange surface of the deck receiving member may be 40 mm or more.

In some embodiments of the present invention, the formwork body has an integral bent iron plate shape including a bent boundary between the left side and the bottom surface of the beam, and the bent boundary between the right side and the bottom surface of the beam. It may include a first formwork body.

In some embodiments of the present invention, the formwork prefabricated beam structure includes an L-shaped cross-section, and is joined to the flange surface of the lower side of the longitudinal angle located at the lower side of the beam, in the longitudinal and transverse directions. a support angle extending in a direction perpendicular to the direction; and one or more reinforcing bar members disposed in contact with the upper side of the support angle and extending in the longitudinal direction.

In some embodiments of the present invention, the upper end surface of the support angle and the reinforcing bar member may be in line contact with each other, and the reinforcing bar member may be positioned by a U-shaped reinforcing bar fixing pin fixed to the support angle.

According to an embodiment of the present invention, as the transverse angle is welded to the formwork body and the deck receiving member in line contact, and the support angle is in line contact with the reinforcing bar member and the longitudinal angle, the inside of the formwork prefabricated beam structure It can exert the effect that the heat transferred to the can be reduced.

According to an embodiment of the present invention, one or more bent portions are formed on the bottom surface of the formwork body without a separate joint to surround both sides of the beam and the bottom surface, so that the formwork prefabricated beam due to deterioration of the joint in case of fire. It can exert the effect of suppressing the collapse phenomenon of the structure.

According to an embodiment of the present invention, the formwork prefabricated beam structure can exhibit the effect of securing the safety of the structure in case of fire by improving the fire resistance by the structure of the transverse angle, the formwork body, and the support angle.

According to an embodiment of the present invention, the materials disposed therein include a L-shape or L-shaped cross section, and assembling is easier compared to a cylindrical reinforcing bar, thereby improving manufacturability.

1 schematically shows an exploded perspective view of a formwork prefabricated beam structure according to the prior art.
2 schematically shows a perspective view of a formwork prefabricated beam structure according to an embodiment of the present invention.
3 schematically shows an enlarged perspective view of a formwork prefabricated beam structure according to an embodiment of the present invention.
4 schematically shows a plan view of an upper region of a formwork prefabricated beam structure according to an embodiment of the present invention.
Figure 5 schematically shows a lower region of the formwork prefabricated beam structure according to an embodiment of the present invention.
6 schematically shows a perspective view of a girder beam using a formwork prefabricated beam structure according to an embodiment of the present invention.
7 schematically shows a cross-sectional view of a formwork body according to an embodiment of the present invention.
8 schematically shows a cross-sectional view of a formwork prefabricated beam structure according to an embodiment of the present invention.

Hereinafter, various embodiments and/or aspects are disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of one or more aspects. However, it will also be recognized by one of ordinary skill in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain illustrative aspects of one or more aspects. These aspects are illustrative, however, and some of the various methods in principles of the various aspects may be employed, and the descriptions set forth are intended to include all such aspects and their equivalents.

As used herein, “embodiment”, “example”, “aspect”, “exemplary”, etc. may not be construed as an advantage or advantage in any aspect or design described above over other aspects or designs. .

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from context, "X employs A or B" is intended to mean one of the natural implicit substitutions. That is, X employs A; X employs B; or when X employs both A and B, "X employs A or B" may apply to either of these cases. It should also be understood that the term “and/or” as used herein refers to and includes all possible combinations of one or more of the listed related items.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. should be understood as not

Also, terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. have the same meaning as Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

1 schematically shows an exploded perspective view of a formwork prefabricated beam structure according to the prior art.

As shown in FIG. 1, the conventional formwork prefabricated beam structure has a plurality of main angles 110 made of a length member of an 'L'-shaped cross-section, and a hoop angle 120 surrounding the plurality of main angles 110. , and a formwork panel 130 fixed to the hoop angle 120 . At this time, the formwork panel 130 is disposed on both sides and the bottom surface of the beam, respectively, to form a shape to be fastened by welding and bolting, so that it is relatively easy to assemble.

In addition, the conventional prefabricated formwork beam structure is characterized in that the support portion 131a is formed by bending the upper end of the formwork panel 130 one or more times without fastening a separate member for supporting the deck.

However, as a result of the present applicant's research on the safety of reinforced concrete (C) structures in case of fire, the conventional structures as described above are designed without considering fire resistance according to the industry trend, so it is suitable to secure safety against fire. Did not do it.

More specifically, in the conventional structure, each panel joint of the formwork panel 130 is formed at the lower end of the bottom surface or both sides of the structure. Supporting performance may be reduced in the center. At this time, there is a problem in that the structure may collapse due to deterioration of the joint and a safety accident may occur.

In addition, in the conventional structure, the first flange 111 side surface of the main angle 110 having a 'L'-shaped cross-section is welded to the inner flange surface of the formwork panel 110 by surface contact. In this case, when a fire occurs, heat can be easily transferred from the outside to the inside of the structure, and there is a problem in that the bearing capacity of the metal member and the reinforcing bar disposed inside the structure is lowered by the transferred heat.

That is, the conventional formwork prefabricated beam structure does not consider fire resistance, so that, when a fire occurs, the support performance is lowered around the joint of the formwork panel 130, and heat is easily transferred from the outside to the inside of the structure and placed inside the structure A serious safety accident may occur due to the lowering of the bearing capacity of the members.

In order to solve this problem, in the present invention, the fire resistance is excellent by suppressing the transfer of heat to the inside of the structure, and the safety is secured in case of fire by using the formwork prefabricated beam structure (1) with improved structure joint and improved manufacturability. did.

Hereinafter, the formwork prefabricated beam structure 1 according to an embodiment of the present invention will be described in detail.

2 schematically shows a perspective view of a prefabricated formwork beam structure 1 according to an embodiment of the present invention, and FIG. 3 is an enlarged view of the formwork prefabricated beam structure 1 according to an embodiment of the present invention. One perspective view is schematically shown.

As a prefabricated formwork beam structure (1) according to an embodiment of the present invention, a plurality of longitudinal angles (100) disposed at positions corresponding to a plurality of corners and extending in the longitudinal direction; a transverse angle 200 having an L-shaped cross-section and disposed on the outside of the longitudinal angle 100 and extending in the transverse direction; A deck receiving member 300 including a L-shaped cross-section, disposed outside the upper portion of the transverse angle 200 and extending in the longitudinal direction; And both sides of the beam, and the formwork body 400 surrounding the bottom surface; may include.

The formwork prefabricated beam structure (1), in one embodiment of the present invention, may be pre-assembled in a factory in order to construct a beam connecting between the columns. In order to more clearly show the internal structure of the formwork prefabricated beam structure 1, a part of the formwork body 400 is not shown in FIGS. 2 and 3 .

The plurality of longitudinal angles 100, in an embodiment of the present invention, may be disposed at positions corresponding to the plurality of corners to extend in the longitudinal direction. At this time, as shown in FIG. 2 , the plurality of corners may correspond to the corners of the beam, and the plurality of longitudinal angles 100 may be disposed at positions corresponding to each corner of the beam.

In addition, the longitudinal angle 100, as shown in FIG. 3, may include a L-shaped cross section. That is, the longitudinal angle 100 may be formed of a length member having a L-shaped cross section. Accordingly, it is easy to handle compared to the cylindrical reinforcing bar, so assembly is simple, and the straightness is excellent, so that the construction precision can be improved.

Preferably, as the plurality of longitudinal angles 100 including the L-shaped cross section are disposed at the plurality of corners, the formwork prefabricated beam structure 1 can be assembled more efficiently, and The effect of improving the precision can be exhibited.

In addition, the yellow angle, in an embodiment of the present invention, may include an L-shaped cross-section.

The conventional formwork prefabricated beam structure (1) includes a main angle made of a length member of a 'L'-shaped cross-section as a main bar. However, as one surface of the main angle is in contact with the inner surface of the formwork panel, there is a problem that heat by fire can be easily transferred to the inside of the structure.

In order to solve this problem, in the present invention, the transverse angle 200 having an L-shaped cross section is welded to the formwork 400 in line contact to reduce the heat transfer area from the outside in case of fire.

Preferably, the transverse angle 200 may be welded to the deck receiving member 300 and the formwork body 400 by line contact, and welded to the longitudinal angle 100 by surface contact. Accordingly, when a fire occurs, heat transferred from the outside to the inside of the prefabricated formwork beam structure 1 can be relatively reduced.

More specifically, when a fire occurs outside the formwork prefabricated beam structure (1), the heat caused by the fire is transmitted through the formwork body (400) and the deck receiving member (300) at the transverse angle ( 200) can be transferred. At this time, the transverse angle 200 is welded in line contact with the formwork body 400 and the deck receiving member 300, it is possible to reduce the heat transfer area compared to the surface contact. As a result, heat transferred to the longitudinal angle 100 through the transverse angle 200 can be reduced, thereby improving the fire resistance of the formwork prefabricated beam structure 1 .

Preferably, since the transverse angle 200 is welded to the formwork body 400 and the deck receiving member 300 in line contact, the heat transferred to the inside of the formwork prefabricated beam structure 1 can be reduced. can have an effect.

In addition, the transverse angle 200, in an embodiment of the present invention, may be disposed on the outside of the longitudinal angle 100 to extend in the transverse direction.

As shown in FIG. 2 , the transverse angle 200 may be disposed between an upper edge and a plurality of longitudinal angles 100 disposed at a lower edge adjacent to the upper edge to be welded. In this case, the transverse angle 200 may be disposed to be spaced apart by a predetermined interval.

That is, the transverse angle 200 is spaced apart and welded at a predetermined interval between the plurality of longitudinal angles 100 disposed at the upper and lower corners, so that the formwork prefabricated beam structure 1 is more stably A force such as lateral pressure by the concrete (C) can be supported.

The deck receiving member 300, in one embodiment of the present invention, may include a cross-section in the shape of a letter, disposed on the outer side of the upper side of the transverse angle 200 may extend in the longitudinal direction.

The conventional formwork prefabricated beam structure (1) formed a support portion capable of supporting the deck plate (D) by bending a plurality of points. However, bending a plurality of points is not easy to manufacture as a whole, and there is a problem in that structural safety is weak due to breakage of the bent part.

In order to solve this, in the present invention, a single point is bent to form a deck receiving member 300 having a L-shaped cross section. At this time, a portion of the flange surface of the lower side of the deck receiving member 300 may be welded to a portion of the upper surface of the formwork body 400 to be mutually bonded. Accordingly, a deck plate (D) for forming a slab may be disposed on the upper side of the deck receiving member 300 .

In one embodiment of the present invention, the interval between the flange surface of the outer side of the longitudinal angle 100 and the inner flange surface of the deck receiving member 300 may be 40 mm or more. Accordingly, it is possible to secure a space in which the transverse angle 200 can be arranged, and at the same time to prevent voids that may occur when the concrete C is installed into the structure.

The formwork body 400, in an embodiment of the present invention, may surround both sides of the beam, and the bottom surface.

The conventional formwork prefabricated beam structure (1) may include a joint such as welding and bolting at the lower end of the bottom surface or both sides of the structure because the formwork is formed in a panel type.

However, in the event of a fire, heat may be intensively applied to the bottom surface of the formwork, and in this case, structural characteristics may be abruptly deteriorated centering on the joint, and thus support performance may be deteriorated.

In order to solve this problem, in the present invention, one or more bent parts are formed in the formwork body 400 to suppress the deterioration of the center of the joint in case of fire.

More specifically, the formwork body 400 according to an embodiment of the present invention consists of a plate-shaped member in which a bent portion is formed between the left side and the bottom surface of the beam, and between the right side and the bottom surface of the beam, No joints are formed on the bottom surface. Accordingly, it is possible to prevent the collapse of the structure due to deterioration of the joint in the event of a fire.

Preferably, one or more bent portions are formed on the bottom surface of the formwork body 400 without a separate joint to surround both sides of the beam and the bottom surface, so that the formwork prefabricated beam structure due to deterioration of the joint in case of fire. The effect of suppressing the collapse phenomenon of (1) can be exhibited.

On the other hand, the formwork prefabricated beam structure 1 according to an embodiment of the present invention includes an L-shaped cross section, and is located on the lower flange surface of the longitudinal angle 100 located at the lower side of the beam. a support angle 600 that is joined and extends perpendicular to the longitudinal and transverse directions; and one or more reinforcing bar members 500 disposed in contact with the upper side of the support angle 600 and extending in the longitudinal direction.

The conventional formwork prefabricated beam structure 1 has a surface contact structure in which one surface of the main angle is in contact with one surface of the formwork panel, and the other surface of the main angle is in contact with one surface of the reinforcing bar. The structure of the above structure can easily transfer the heat caused by the fire to the reinforcing bar when a fire occurs.

On the other hand, in the present invention, as shown in FIG. 3 , since the support angle 600 is in line contact with the reinforcing bar member 500 , heat transfer to the reinforcing bar member 500 can be minimized. Preferably, the upper end surface of the support angle 600 and the reinforcing bar member 500 may be in line contact with each other.

That is, the flange surface of the lower side of the support angle 600 is in contact with the inner bottom surface of the formwork body 400, and the upper end surface of the support angle 600 is in line contact with the reinforcing bar member 500. , it is possible to minimize the heat transfer to the reinforcing bar member 500 in the event of a fire.

In addition, as shown in FIG. 3 , the upper end surface of the support angle 600 may be in line contact with the longitudinal member. Due to this, it is possible to reduce the heat transfer area from the bottom surface of the structure in the event of a fire.

Preferably, as the support angle 600 is in line contact with the reinforcing bar member 500 and the longitudinal angle 100, the heat transferred to the inside of the formwork prefabricated beam structure 1 can be reduced. can be effective.

In an embodiment of the present invention, the formwork prefabricated beam structure 1 not including the support angle 600 may be structurally stable. That is, the support angle 600 corresponds to a member performing an additional function, not a member performing a structural function.

Preferably, the support angle 600 is disposed on the lower side of the beam and corresponds to a member for increasing the fire resistance of the formwork prefabricated beam structure (1).

As described above, the formwork prefabricated beam structure 1 according to an embodiment of the present invention is fire resistant by the structure of the transverse angle 200 , the formwork body 400 , and the support angle 600 . This improvement can exert the effect of securing the safety of the structure in the event of a fire.

On the other hand, as shown in Figures 2 and 3, the formwork prefabricated beam structure 1 according to an embodiment of the present invention is the upper flange surface of the longitudinal angle 100 located on the upper side of the beam. a blocking member 700 disposed above; and a connecting member 800 disposed on one side of the lower region of the prefabricated formwork beam structure 1 and including one or more fastening holes.

In one embodiment of the present invention, the formwork prefabricated beam structure 1 is fastened to the adjacent formwork prefabricated beam structure 1 by inserting a fastening member such as a bolt into the one or more fastening holes to form a girder beam. can be formed

4 schematically shows a plan view of an upper region of a formwork prefabricated beam structure according to an embodiment of the present invention.

The cross section of the transverse angle 200 according to an embodiment of the present invention includes a first flange extending in the longitudinal direction and a second flange extending outwardly, and the length of the first flange is the second It may be shorter than the length of the flange.

As shown in FIG. 4 , the first flange corresponds to an end surface of the inner flange surface of the transverse angle 200 that is in surface contact with the longitudinal angle 100 . In addition, the second flange corresponds to the outer flange surface of the lateral angle 200 in line contact with the formwork body 400 and the deck receiving member 300 .

That is, the second flange is formed to be relatively longer than the first flange, so that heat transferred to the inside of the prefabricated formwork beam structure 1 can be effectively reduced.

5 schematically shows a lower region of a beam structure 1 of prefabricated formwork according to an embodiment of the present invention.

FIG. 5( a ) schematically shows a front view of the lower region of the prefabricated formwork beam structure 1 .

As shown in Figure 5 (a), the support angle 600 is disposed on the upper side of the formwork body 400, one or more reinforcing bar members 500 are disposed on the upper side of the support angle 600, the one or more The position of the reinforcing bar member 500 may be fixed by the U-shaped reinforcing bar fixing pin 610 fixed to the support angle 600 .

Fig. 5(b) schematically shows a right side view of the lower region of the beam structure 1 of the prefabricated formwork.

As shown in Fig. 5(b), the upper end surface of the support angle 600 is in line contact with the reinforcing bar member 500, and the lower flange surface of the support angle 600 is the formwork body. 400 may be in contact with the inner bottom surface.

That is, as the support angle 600 is in line contact with the reinforcing bar member 500 , the heat transferred to the inside of the formwork prefabricated beam structure 1 can be reduced.

6 schematically shows a perspective view of a girder beam using the formwork prefabricated beam structure 1 according to an embodiment of the present invention.

As described above, the formwork prefabricated beam structure 1 may include the connecting member 800 that is disposed on one side of the lower region and includes one or more fastening holes.

As shown in FIG. 6 , the formwork prefabricated beam structure 1 is fastened to the adjacent formwork prefabricated beam structure 1 by a connecting member 800 to form a girder beam extending in a predetermined direction. can do.

At this time, the formwork prefabricated beam structure 1 is extended in the longitudinal direction by inserting a fastening member into the fastening hole formed in the connecting member 800 and fastened to the adjacent formwork prefabricated beam structure 1, A girder beam extending in the transverse direction or extending in the outward direction may be formed. Further, the girder beams extending in one or more directions may be formed by fastening the girder beams extending in different directions by the connection member 800 .

7 schematically shows a cross-sectional view of a formwork body 400 according to an embodiment of the present invention.

The formwork body 400 according to an embodiment of the present invention is an integrated bent iron plate including a bent boundary between the left side and the bottom surface of the beam, and the bent boundary between the right side and the bottom surface of the beam. It may include a first formwork body 410 having a shape.

Figure 7 (a) schematically shows a cross-sectional view of the formwork body 400 according to an embodiment of the present invention.

As shown in FIG. 7A , the formwork body 400 may include the first formwork body 410 . That is, in an embodiment of the present invention, the formwork body 400 may be formed of a single bent iron plate.

7 (b) and 7 (c) schematically show a cross-sectional view of a formwork body 400 according to another embodiment of the present invention.

7(b) and 7(c), the formwork body 400 includes the first formwork body 410 and the second formwork body 420 having an unbent iron plate shape. may include

In this case, the height of both sides of the first formwork body 410 may be different from each other. At this time, the upper end surface of the side of the relatively low height of the first formwork body 410 may be welded to the lower end surface of the second formwork body 420 .

That is, in another embodiment of the present invention, the formwork body 400 may be formed by welding one bent iron plate and one unbent iron plate to each other. At this time, the height of both sides of the formwork body 400 is preferably the same as each other.

Figure 7 (d) schematically shows a cross-sectional view of the formwork body 400 according to another embodiment of the present invention.

7(d), the formwork body 400 includes the first formwork body 410, the second formwork body 420 having an unbent iron plate shape, and a third formwork body 430 ) may be included.

In this case, the heights of both sides of the first formwork body 410 may be the same or different from each other. The height of both side surfaces of the first formwork body 410 is preferably shorter than the length of the bottom surface of the first formwork body 410 .

At this time, the end surface of one side of the first formwork body 410 may be welded to the lower end surface of the second formwork body 420 , and the end surface of the other side of the first formwork body 410 . The lower surface may be welded to the lower end surface of the third formwork body 430 .

That is, in another embodiment of the present invention, the formwork body 400 may be formed by welding one bent iron plate and two non-bent iron plates to each other.

As described above, the formwork body 400 according to an embodiment of the present invention may be formed in an integral or separate structure. However, in all embodiments according to the present invention, it is preferable that a separate joint is not formed.

Preferably, one or more bent portions are formed on the bottom surface of the formwork body without a separate joint to surround both sides and the bottom surface of the beam, so the collapse of the formwork prefabricated beam structure due to deterioration of the joint in the event of a fire may have an inhibitory effect.

8 schematically shows a cross-sectional view of a formwork prefabricated beam structure 1 according to an embodiment of the present invention.

As shown in Figure 8, the formwork prefabricated beam structure 1 according to an embodiment of the present invention is a longitudinal angle 100, a transverse angle 200, a deck receiving member ( 300), and the formwork body 400 may be installed at the construction site in a pre-assembled state. A deck plate (D) for forming a slab may be disposed on the upper side of the deck receiving member 300 .

In one embodiment of the present invention, by pouring the concrete (C) to the upper side of the formwork prefabricated beam structure (1), it is possible to construct the beam and the slab together. Accordingly, the process for reinforcing reinforcing bars at the construction site, installing or removing formwork, or installing copper bars for supporting beams is omitted, thereby shortening the construction period and reducing construction costs.

According to an embodiment of the present invention, as the transverse angle is welded to the formwork body and the deck receiving member in line contact, and the support angle is in line contact with the reinforcing bar member and the longitudinal angle, the inside of the formwork prefabricated beam structure It can exert the effect that the heat transferred to the can be reduced.

According to one embodiment of the present invention, one or more bent parts are formed on the bottom surface of the formwork body without a separate joint to surround both sides and the bottom surface of the beam, so that the formwork prefabricated beam due to deterioration of the joint in the event of a fire. It can exert the effect of suppressing the collapse phenomenon of the structure.

According to an embodiment of the present invention, the formwork prefabricated beam structure can exhibit the effect of securing the safety of the structure in case of fire by improving the fire resistance by the structure of the transverse angle, the formwork body, and the support angle.

According to an embodiment of the present invention, the materials disposed therein include a L-shape or L-shaped cross section, and assembling is easier compared to a cylindrical reinforcing bar, thereby improving manufacturability.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

1: Formwork prefabricated beam structure
100: longitudinal angle 200: lateral angle
300: deck receiving member 400: formwork body
500: reinforcing bar member 600: support angle
610: reinforcing bar fixing pin 700: blocking board member
800: connecting member C: concrete
D: deck plate

Claims (6)

A formwork prefabricated beam structure comprising:
a plurality of longitudinal angles disposed at positions corresponding to the plurality of corners and extending in the longitudinal direction;
a transverse angle including an L-shaped cross-section, disposed outside the longitudinal angle and extending in the transverse direction;
a deck receiving member including a L-shaped cross-section, disposed outside the upper side of the transverse angle and extending in the longitudinal direction;
Both sides of the beam, and a formwork body surrounding the bottom surface;
a support angle including an L-shaped cross-section, disposed in a direction perpendicular to the longitudinal direction of the beam and joined to the flange surface of the lower side of the longitudinal angle positioned below the beam by line contact; and
A reinforcing bar member disposed in contact with the upper side of the support angle and in line contact with the end surface of the upper side of the support angle;
A cross-section of the transverse angle extends in the longitudinal direction, a first flange corresponding to an end face of an inner flange surface of the transverse angle, and a first flange extending outwardly, corresponding to an outer flange face of the transverse angle Including a second flange to
The length of the first flange is shorter than the length of the second flange,
The first flange is welded with a surface contact to the flange surface of the outer side of the longitudinal angle,
The second flange is welded in line contact with the inner surface of the flange surface of the deck receiving member and the inner surface of the formwork body,
A part of the flange surface of the lower side of the deck receiving member is welded to a part of the upper surface of the formwork body and joined to each other,
The formwork body includes a first formwork body having a single-piece bent iron plate shape including a bent boundary between the left side surface and the bottom surface of the beam, and a bent boundary between the right side surface and the bottom surface of the beam which is a prefabricated formwork beam structure.
delete The method according to claim 1,
The distance between the flange surface of the outer side of the longitudinal angle and the flange surface of the inner side of the deck receiving member is 40 mm or more, a formwork prefabricated beam structure.
delete delete The method according to claim 1,
The position of the reinforcing bar member is fixed by a U-shaped reinforcing bar fixing pin fixed to the support angle, a formwork prefabricated beam structure.

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