KR102499284B1 - Curved Beam Structures for Rampway - Google Patents

Abstract

The present invention relates to a curved beam structure used for a rampway. More particularly, the present invention relates to a curved beam structure used for a rampway, which has a curved outer surface by welding a stopper plate welded between one end of a plurality of T-bars to a bottom plate in which one side is formed in a curved shape while the inclination gradually changes as the length of the T-bar placed on the upper side of a straight beam gradually changes.

Description

Curved Beam Structures for Rampway {Curved Beam Structures for Rampway}

The present invention relates to a curved beam structure used in an entry ramp, and more particularly, as the length of a T-bar disposed on the upper side of a straight beam gradually changes, a stopper plate welded between one end of a plurality of T-bars It relates to a curved beam structure used for an access ramp having a curved outer surface by being welded to a bottom plate in which one side is formed in a curved shape while the inclination gradually changes.

Rampway refers to road sections with slopes and curves that can be seen in structures such as parking lots, outdoor stadiums, and highway access roads. In order to construct rampways, curved beams are constructed along curved roads. Needs to be.

In order to construct such a curved beam, a construction method was used in the early days by connecting straight molds to form a curve, but this method of construction costs increased and the aesthetics were not good. Recently, steel materials such as H-beams and steel plates were bent. A construction method is used. However, this also includes the process of precisely bending steel materials such as H-beams and steel plates along the shape of the road and bending them, increasing the manufacturing cost and construction cost of existing curved beams compared to straight beams, and also lowering durability. was inherent

On the other hand, the NRC construction method is a modular construction method that is pre-assembled at a specialized factory and installed on site instead of the existing construction method of installing formwork and reinforcing bars for reinforced concrete columns and beam members at the construction site. It is simple and has the advantage of reducing construction cost, shortening construction period, and minimizing on-site manpower. Patent Document 1, which is a related patent, is a filed invention of the applicant of the present invention, and discloses a formwork pre-assembled beam structure with improved structure joints and improved manufacturability. The beam structure according to the patent has the advantage of excellent fire resistance by suppressing the transfer of heat to the inside of the structure.

However, the patent is for constructing a straight beam structure, and does not disclose a method for constructing a curved beam as described above.

Therefore, the need for research and development on a curved beam structure construction method that can reduce construction costs and shorten the construction period while forming a curve in a way that does not bend steel by applying the NRC method is emerging.

KR 10-2325067 B1

The present invention relates to a curved beam structure used in an entry ramp, and more particularly, as the length of a T-bar disposed on the upper side of a straight beam gradually changes, a stopper plate welded between one end of a plurality of T-bars It is an object of the present invention to provide a curved beam structure used in an entry ramp having a curved outer surface by being welded to a bottom plate in which one side is formed in a curved shape while the inclination gradually changes.

In order to solve the above problems, the present invention is a curved beam structure used in an entrance ramp, 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 and disposed outside the longitudinal angle and extending in a transverse direction; A deck receiving member having an L-shaped cross-section and extending in the longitudinal direction by being disposed outside the upper portion of the transverse angle; And both sides of the beam, and a formwork body surrounding the bottom surface; including, a straight beam; A plurality of T-bars disposed on the upper surface of the straight beam, having different lengths, and including a web part formed in a vertical direction and a flange part joined to one end of the web part and formed in a horizontal direction; A portion of the upper side surface is joined to a portion of the lower surface of the flange portion of the plurality of T-bars, a portion of the lower side surface is joined to the upper end surface of the deck receiving member, one side has a straight shape, and the other side has a curved shape. Or one or more bottom plates having an inclined shape to the straight beam; One or more stopper plates bonded to the end surfaces of the plurality of T-bars and the outer end surface of the bottom plate and having one or more rectangular cross sections, and as the length of the T-bar gradually changes, one of the bottom plates Provides a curved beam structure in which the entrance ramp section realized by the side and the outer surface of the stopper plate can be implemented in a curved shape as a whole.

In some embodiments of the present invention, in the straight beam, the inner flange surface of the transverse angle is welded to the outer flange surface of the longitudinal angle in surface contact, and the outer end surface of the transverse angle is welded to the outer flange surface of the longitudinal angle. It is welded in line contact with the inner flange surface of the deck receiving member and the inner surface of the formwork body, and a part of the lower flange surface of the deck support member is welded with a part of the upper surface of the formwork body to be mutually joined. there is.

In some embodiments of the present invention, the lower surface of one end of the T-bar is welded to the upper side of the longitudinal angle located inside the straight beam, and the other end of the T-bar is horizontally from the upper side of the straight beam. Protruding, the stopper plate is welded to the end surface of the other end of the T-bar, and the end surface of the T-bar welded to the upper side of the longitudinal angle has a straight shape, and the T-bar to which the stopper plate is welded The end face of the other end may have an oblique shape.

In some embodiments of the present invention, the T-bar is repeatedly arranged at regular intervals in the longitudinal direction from the upper side of the straight beam along the longitudinal angle, but the T-bar disposed in the center of the longitudinal direction of the longitudinal angle It has the longest length, and the length of the T-bar gradually decreases as it is disposed at both ends of the longitudinal angle, so that the length of the T-bar disposed at both ends of the longitudinal angle may have the shortest length. there is.

In some embodiments of the present invention, the bottom plate has one side having a linear shape is welded to the deck receiving member, the other side having a curved shape is welded to the one or more stopper plates, and the other side having the curved shape is A curved shape may be formed by including a plurality of straight line structures in which the inclination gradually decreases.

In some embodiments of the present invention, the stopper plate has one side of the rectangular cross section welded to the end face of one end of the T bar protruding horizontally from the upper side of the straight beam, and the other side of the rectangular cross section of the T bar It is welded to the end surface of one end of another T-bar disposed on the left and right sides, and the slope formed by one or more rectangular cross sections along the oblique end surface of the T-bar gradually changes so that the outer surface of the stopper plate forms a curved shape can

According to one embodiment of the present invention, as the length of the T-bar gradually changes and the cross-section of one end of the T-bar has an oblique shape, one side of the bottom plate welded to the cross-section of the T-bar and the outer surface of the stopper plate are curved can have a shape.

According to one embodiment of the present invention, it is possible to construct a curved beam structure having a curved outer surface with a flat plate member having a rectangular cross section without bending a steel material such as an iron plate.

According to one embodiment of the present invention, the curved beam structure is constructed by the NRC method, which can shorten the construction period and reduce construction costs.

1 schematically shows an exploded perspective view of a formwork pre-assembled beam structure according to the prior art.
Figure 2 schematically shows a perspective view of a formwork pre-assembled beam structure according to an embodiment of the present invention.
Figure 3 schematically shows an enlarged perspective view of a formwork pre-assembled 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.
5 schematically shows a lower region of a 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 pre-assembled 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 pre-assembled beam structure according to an embodiment of the present invention.
9 schematically illustrates a curved beam structure according to an embodiment of the present invention.
10 schematically shows a T-bar according to an embodiment of the present invention.
11 schematically shows a plurality of T-bars arranged according to an embodiment of the present invention.
Figure 12 schematically shows a plurality of T-bars arranged according to an embodiment of the present invention.
13 schematically shows a floor plate according to an embodiment of the present invention.
14 schematically shows a stopper plate according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are disclosed with reference now to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings describe in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in principle of the various aspects may be used, and the described descriptions are intended to include all such aspects and their equivalents.

"Example", "example", "aspect", "exemplary", etc., used herein should not be construed as preferring or advantageous to any aspect or design being described 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 the context, “X employs A or B” is intended to mean one of the natural inclusive substitutions. That is, X uses A; X uses B; Or, if X uses both A and B, "X uses either A or B" may apply to either of these cases. Also, the term "and/or" as used herein should be understood to refer to and include 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. It should be understood that it does not.

In addition, terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited 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. has the same meaning as Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning not be interpreted as

1. Formwork Prefabricated Beam Structure

Prior to the detailed description of the present invention, in the following, 1. The pre-assembled formwork beam structure will be described in detail.

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

As shown in FIG. 1, the conventional formwork pre-assembled beam structure includes a plurality of main angles 110 made of length members of 'a'-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 has the advantage of being relatively easy to assemble since it is arranged on both side surfaces and the bottom surface of the beam and is fastened by welding and bolting.

In addition, the conventional formwork pre-assembled 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 supporting the deck.

However, as a result of the applicant's research on the safety of reinforced concrete (C) structures in the event of a fire, the conventional structures as described above are designed without considering fire resistance according to the industry trend, and are suitable for securing 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, but in the event of a fire, since heat is intensively transferred to the bottom surface of the structure, the joint The center of gravity may degrade support performance. At this time, there is a problem in that a safety accident may occur due to the collapse of the structure due to the deterioration of the joint.

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 in 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 transferred heat reduces the bearing capacity of metal members and reinforcing bars disposed inside the structure.

That is, in the conventional formwork pre-assembled beam structure, fire resistance is not considered, so in the event of a fire, 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 to be placed inside the structure. A serious safety accident may occur due to the deterioration 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, the structure joint is improved and the formwork prefabricated beam structure (1) with improved manufacturability is used to secure safety in case of fire. did

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

Figure 2 schematically shows a perspective view of a formwork pre-assembled beam structure 1 according to an embodiment of the present invention, Figure 3 is an enlarged view of the formwork pre-assembled beam structure 1 according to an embodiment of the present invention A perspective view is schematically shown.

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

The formwork pre-assembled 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 columns. In order to more clearly show the internal structure of the formwork pre-assembled beam structure 1, a part of the formwork body 400 is not shown in FIGS. 2 and 3.

In one embodiment of the present invention, the plurality of longitudinal angles 100 may be disposed at positions corresponding to a plurality of corners and 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, as shown in FIG. 3, the longitudinal angle 100 may include an L-shaped cross section. That is, the longitudinal angle 100 may be formed of a length member having an 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 construction precision can be improved.

Preferably, as the plurality of longitudinal angles 100 having an L-shaped cross section are disposed at the plurality of corners, the formwork pre-assembled beam structure 1 can be assembled more efficiently, and the It can exert the effect of improving precision.

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

The conventional formwork pre-assembled beam structure 1 includes a main angle consisting of a length member of 'a'-shaped cross section as a main beam. However, as one surface of the main angle contacts the inner surface of the formwork panel, there is a problem in that heat due to 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 body 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 in line contact, and welded to the longitudinal angle 100 in surface contact. Accordingly, in the event of a fire, heat transferred from the outside to the inside of the formwork pre-assembled beam structure 1 can be relatively reduced.

More specifically, when a fire occurs outside the formwork pre-assembled beam structure 1, the heat caused by the fire passes through the formwork body 400 and the deck receiving member 300 to the transverse angle ( 200) can be transmitted. At this time, the transverse angle 200 is welded in line contact with the formwork body 400 and the deck receiving member 300, so that the heat transfer area compared to surface contact can be reduced. As a result, heat transferred to the longitudinal angle 100 through the transverse angle 200 can be reduced, so that the fire resistance of the formwork pre-assembled beam structure 1 can be improved.

Preferably, the transverse angle 200 is welded to the formwork body 400 and the deck receiving member 300 in line contact, so that the heat transmitted to the inside of the formwork pre-assembled beam structure 1 can be reduced effect can be exerted.

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

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

That is, the transverse angle 200 is welded at a predetermined interval between the plurality of longitudinal angles 100 disposed at the upper and lower corners, so that the formwork pre-assembled beam structure 1 is more stable It can support forces such as lateral pressure by concrete (C).

The deck receiving member 300, in one embodiment of the present invention, may include an L-shaped cross section, and may be disposed on the upper outer side of the transverse angle 200 and extend in the longitudinal direction.

The conventional formwork prefabricated beam structure 1 forms 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 portion.

In order to solve this problem, in the present invention, a deck receiving member 300 having an L-shaped cross section was formed by bending a single point. At this time, a portion of the lower flange surface of the deck receiving member 300 may be welded and joined to a portion of the upper side surface of the formwork body 400. 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 distance between the outer flange surface 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 placed and to prevent air gaps that may occur when concrete (C) is laid inside the structure.

In one embodiment of the present invention, the formwork body 400 may surround both sides and the bottom surface of the beam.

The conventional formwork prefabricated beam structure 1 is made of a panel formwork, so it may include joints such as welding and bolting at the lower end of the bottom surface or both sides of the structure.

However, in the event of a fire, heat may be intensively applied to the bottom surface of the formwork, and in this case, there is a problem in that support performance may be deteriorated due to a rapid deterioration in structural characteristics around the joint.

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 is made of a plate-shaped member with bent portions formed between the left side and the bottom surface of the beam and between the right side and the bottom surface of the beam, so that the structure No joints are formed on the bottom surface. Accordingly, it is possible to prevent collapse of the structure due to deterioration of the joint in case of fire.

Preferably, one or more bent parts 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 in the event of a fire, the formwork pre-assembled beam structure due to deterioration of the joint 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 on the lower side of the beam. A support angle 600 that is bonded and extends in the vertical direction with respect 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 ); may further include.

The conventional formwork pre-assembled 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 bars in the event of a fire.

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 lower flange surface 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 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 member 500 and the longitudinal angle 100, the heat transferred to the inside of the formwork pre-assembled beam structure 1 can be reduced can be effective.

In one embodiment of the present invention, the formwork pre-assembled beam structure 1 that does not include the support angle 600 can be structurally stable. That is, the support angle 600 corresponds to a member that performs an additional function rather than a member that performs 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 pre-assembled beam structure 1.

As described above, the formwork pre-assembled beam structure 1 according to an embodiment of the present invention has fire resistance due to 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 pre-assembled 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 block board member 700 disposed above; and a connection member 800 disposed on one side of the lower region of the formwork prefabricated beam structure 1 and including one or more fastening holes.

In one embodiment of the present invention, the formwork pre-assembly type beam structure 1 is fastened to the adjacent formwork pre-assembly type 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 form

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 equal to 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 an 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 transverse angle 200 in line contact with the formwork body 400 and the deck receiving member 300.

That is, compared to the first flange, the second flange is formed relatively long, so that the heat transmitted to the inside of the formwork pre-assembled beam structure 1 can be effectively reduced.

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

Figure 5 (a) schematically shows a front view of the lower area of the formwork prefabricated 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, and the one or more The position of the reinforcing bar member 500 may be fixed by a U-shaped reinforcing bar fixing pin 610 fixed to the support angle 600.

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

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 in line with the formwork body. (400) Can 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 pre-assembled beam structure 1 can be reduced.

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

As described above, the formwork pre-assembled beam structure 1 may include the connection member 800 disposed on one side of the lower region and including one or more fastening holes.

As shown in FIG. 6, the formwork pre-assembled beam structure 1 is fastened to the adjacent formwork pre-assembled 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 pre-assembled beam structure 1 is extended in the longitudinal direction by inserting a fastening member into the fastening hole formed in the connection member 800 and fastened to the adjacent formwork pre-assembled beam structure 1, A girder beam extending in the transverse direction or extending outward may be formed. In addition, girder beams extending in one or more directions may be formed by fastening the girder beams extending in different directions by the connecting 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 a bent boundary between the right side and the bottom surface of the beam. It may include a first die 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. 7 (a), the formwork body 400 may include the first formwork body 410. That is, in one 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 steel plate shape. can include

In this case, the heights of both sides of the first formwork body 410 may be different from each other. At this time, the upper end surface of the relatively low height side surface 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 form body 400 may be formed by welding one bent iron plate and one non-bent iron plate to each other. At this time, it is preferable that the heights of both sides of the formwork body 400 are the same.

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

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

In this case, the heights of both sides of the first die body 410 may be the same or different. It is preferable that the height of both side surfaces of the first die body 410 is shorter than the length of the bottom surface of the first die body 410 .

At this time, the end surface of one side of the first formwork body 410 may be welded to the end surface of the lower side of the second formwork body 420, and the end of the other side surface of the first formwork body 410 The side 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 as an integral or separate structure. However, it is preferable that no separate joint is formed in all embodiments according to the present invention.

Preferably, one or more bent parts 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 pre-assembled beam structure collapses due to deterioration of the joint in the event of a fire. can exert an inhibitory effect on

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

As shown in FIG. 8, the formwork pre-assembled beam structure 1 according to an embodiment of the present invention includes a longitudinal angle 100, a transverse angle 200, and a deck receiving member constituting the frame of the beam ( 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 concrete (C) to the upper side of the formwork prefabricated beam structure (1), it is possible to construct a beam and a slab together. Accordingly, the process of arranging reinforcing bars, installing or removing a formwork, or installing a support for supporting a beam at a construction site is omitted, thereby shortening the construction period and reducing construction costs.

2. Curved beam structures used for access ramps

The above '1. The formwork pre-assembled beam structure' corresponds to the application of the NRC method, which has improved workability and reduced construction costs compared to the existing RC method, and discloses a beam structure with improved fire resistance due to the above-mentioned structural features.

On the other hand, '1. The formwork prefabricated beam structure' is for constructing a straight beam, and in order to construct ramp sections with slopes and curves such as parking lots, outdoor stadiums, and highway access roads, a beam structure with a curved outer surface along a curved road is required. It is necessary to construct, but in the prior art, there was a problem that the beam structure having such a curved shape could not be constructed.

In order to construct a curved beam structure in the existing environment, the existing RC method is applied. It has the disadvantage of increasing construction cost and deteriorating durability because it has to be bent, and also has inherent problems in that the advantages of the NRC method, such as improving workability and reducing construction costs, cannot be exerted because the above-mentioned NRC method is not applied.

In the following, '1. The beam structure by the formwork prefabricated beam structure' is named as the straight beam (1), and '2. The curved beam structure used for the access ramp will be described in detail.

9 schematically shows a curved beam structure 2 according to an embodiment of the present invention.

As shown in FIGS. 9A, 9B, and 9C, according to an embodiment of the present invention, a ramp section having a curved shape can be constructed by continuously constructing a plurality of curved beam structures 2. Specifically, the curved beam structure 2 is '1. It can be constructed so that the outer surface has a curved shape on the upper side of the straight beam (1) by the formwork prefabricated beam structure'.

Specifically, in one embodiment of the present invention, it is possible to construct a straight beam (1) between a plurality of pillars, or to construct a straight beam (1) between beams, and to construct a straight beam (1) corresponding to the outside of the ramp section. ) By constructing the curved beam structure 2 on the upper side, the overall shape of the ramp section can have a curved shape.

Preferably, one or more curved beam structures 2 may be continuously constructed so that the ramp section has a gentle curve.

On the other hand, as shown in FIG. 9A, the overall shape of the outer surface of the curved beam structure 2 has a curved shape, and more specifically, the outer surface of the curved beam structure 2 has N straight sides. It may consist of polygons. That is, the outer surface of the curved beam structure 2 is not implemented as a complete circle or ellipse, but is formed like a part of a polygon in which straight lines with different slopes are continuous, but the outer surface of the curved beam structure 2 is formed. The number is large, and the overall shape may be formed in a curved shape.

As a result, as shown in FIGS. 9B and 9C, the outer surface of the curved beam structure 2 may have a curved shape, and by continuously constructing such a curved beam structure 2, a more gentle curve It is possible to construct a ramp section with

In this way, the curved beam structure 2 according to the present invention is a straight beam (1) constructed between pillars or between beams and beams; And the curved beam structure (2) constructed on the upper side of the straight beam (1); are all constructed by the NRC method, so that the advantages of the NRC method, such as improving workability and reducing construction costs, can be exhibited.

Hereinafter, the specific shape and structure of the curved beam structure 2 will be described in detail.

10 schematically shows a T-bar 1000 according to an embodiment of the present invention.

As shown in Figures 10A and 10B, the curved beam structure 2 is disposed on the upper surface of the straight beam 1 and has different lengths, and the web part 1001 formed in the vertical direction and the web part 1001 A plurality of T-bars 1000 including a flange portion 1002 formed in a horizontal direction by being bonded to one end of the; may include.

In addition, the lower surface of one end of the T-bar (1000) is welded to the upper surface of the longitudinal angle (100) located inside the straight beam (1), and the other end of the T-bar (1000) is the straight beam ( 1) protrudes horizontally from the upper side, the stopper plate 3000 is welded to the end surface of the other end of the T-bar 1000, and the T-bar welded to the upper surface of the longitudinal angle 100 ( 1000) may have a straight line shape, and an end surface of the other end of the T-bar 1000 to which the stopper plate 3000 is welded may have a diagonal shape.

The T-bar 1000 is a member constituting the frame of the curved beam structure 2, and may be disposed above the longitudinal angle 100 of the straight beam 1, as shown in FIG. 10A. Specifically, the T bar 1000 has one end located on the upper side of the longitudinal angle 100 (upper side in FIG. 10A) located inside the straight beam 1, and the other end located on the outside of the straight beam 1 It can be positioned so as to protrude the longitudinal angle 100 (lower side in FIG. 10A).

Preferably, the T-bar 1000 is disposed on the upper side of the straight beam 1 in an inverted T-shape (ㅗ), so that a part of the flange portion 1002 formed in the horizontal direction at the lower side of the T-bar 1000 is It can be welded to a part of the upper side of the longitudinal angle (100).

Meanwhile, a portion of the T-bar 1000 protruding from the straight beam 1 may be welded to the bottom plate 2000 and the stopper plate 3000. Specifically, a part of the T-bar 1000 protruding the longitudinal angle 100 (lower side in FIG. 10A) located outside the straight beam 1 is welded to the bottom plate 2000 and the stopper plate 3000 And, the curved beam structure 2 can be formed by pouring concrete in the space formed by the corresponding structures.

Preferably, the lower surface of the flange portion 1002 of the T-bar 1000 protruding from the straight beam 1 is welded to the upper surface of the bottom plate 2000, and the T-bar protruding from the straight beam 1 One end of the cross section of (1000) may be welded to the stopper plate (3000). In addition, a portion of the T-bar 1000 may be welded to the upper side of the longitudinal angle 100 (lower side in FIG. 10A) located outside the straight beam 1.

In this way, the T bar 1000 may be positioned in a form in which a part is located on the upper side of the straight beam (1) and a part protrudes horizontally from the upper side of the straight beam (1).

Meanwhile, an end surface of one end of the T-bar 1000 may have a straight line shape, and an end surface of the other end may have a diagonal shape. Specifically, one end of the T-bar 1000 (upper side in FIG. 10A) welded to the longitudinal angle 100 at the upper side of the straight beam 1 may be formed in a straight line, and the horizontal direction at the upper side of the straight beam 1 One end (lower side of FIG. 10A) of the T-bar 1000 protruding and being welded to the bottom plate 2000 and the stopper plate 3000 may be formed in a diagonal line.

As such, one end of the T-bar 1000 has a straight line shape, so that the T-bar 1000 can be continuously welded and disposed along the longitudinal angle 100 extending in the longitudinal direction, and the other end has an oblique shape As a result, the bottom plate 2000 made of a polygonal shape consisting of a plurality of sides whose inclination gradually changes on one side and the stopper plate 3000 having a rectangular cross section continuously disposed along one side of the bottom plate 2000 Corresponds to , the outer surface of the curved beam structure 2 may have a curved shape as a whole.

As a result, a part of the T-bar 1000 formed in a straight shape is disposed on the upper side of the straight beam 1 and welded, and a part of the T-bar 1000 formed in an oblique shape moves the straight beam 1 in the horizontal direction. By protruding and welding the bottom plate 2000 and the stopper plate 3000, the shape of the curved beam structure 2 can be achieved.

Meanwhile, as shown in FIG. 10B, the T-bar 1000 may include a web portion 1001 formed in a vertical direction and a flange portion 1002 formed in a horizontal direction below the web portion 1001. As described above, the T bar 1000 is arranged in an inverted T shape on the upper side of the straight beam 1, and members such as the longitudinal angle 100, the bottom plate 2000, and the stopper plate 3000 can be welded That is, the lower surface of the flange portion 1002 can be welded to the upper side surface of the longitudinal angle 100 and the bottom plate 2000, and the cross-section of one end of the flange portion 1002 and the web portion 1001 is the stopper plate 3000. ) and can be welded.

11 schematically shows a plurality of T-bars 1000 arranged according to an embodiment of the present invention.

As shown in FIGS. 11A and 11B, the T bar 1000 is repeatedly arranged at regular intervals in the longitudinal direction from the upper side of the straight beam 1 along the longitudinal angle 100, The length of the T-bar 1000 disposed at the center of the longitudinal direction of (100) has the longest length, and the length of the T-bar 1000 gradually decreases as it is disposed at both ends of the longitudinal angle 100. Thus, the length of the T-bar 1000 disposed at both ends of the longitudinal angle 100 may have the shortest length.

Specifically, the straight beam (1) extends in the longitudinal direction and can be installed between columns or between beams, and a plurality of T-bars (1000) are placed on the upper side of the straight beam (1) extending in the longitudinal direction. can be placed. Preferably, the T-bar 1000 may be repeatedly arranged at equal intervals on the upper side of the straight beam 1 extending in the longitudinal direction.

As described above, the plurality of T-bars 1000 have one end surface having a straight line shape, forming a 'longitudinal angle 100 formed on the inside and extending in the longitudinal direction' (right side in FIG. 11A and upper side in FIG. 11B). The bottom plate 2000 and the stopper plate 3000 are welded to the upper side, and the end surface of the other end has a diagonal shape and protrudes the 'longitudinal angle 100 formed on the outside' (the left side of FIG. 11A and the lower side of FIG. 11B). ) and can be welded.

Meanwhile, referring to FIG. 11B , it can be seen that each of the plurality of T-bars 1000 has different lengths. Specifically, the length of the T-bar (1000.1) disposed at the longitudinal center of the straight beam (1) may have the longest length, and the length of the T-bar (1000) is farther from the longitudinal center of the straight beam (1). The length of the T-bars 1000.2 and 1000.3 disposed at both ends of the longitudinal angle 100 may have the shortest length by gradually decreasing.

In this way, as the length of the T-bar 1000 gradually changes, the length of the T-bar 1000 protruding in the horizontal direction from the upper side of the straight beam 1 is different, formed by a plurality of T-bars 1000 The sides may be arranged to correspond to the shape of the bottom plate 2000. Specifically, the bottom plate 2000 may be manufactured in a shape in which one side has a straight shape and the other side has a curved shape, and the bottom plate 2000 having a curved shape and a side formed by a plurality of T-bars 1000 ) may correspond to one side of

Preferably, one side having a curved shape of the bottom plate 2000 may have a curved shape as a whole as a plurality of straight sides whose inclination gradually changes are continuous, and may have a curved shape as a whole, and a side formed by a plurality of T-bars 1000 and a plurality of One side of the bottom plate 2000 where the straight side of is continuous may correspond.

On the other hand, the inclination of the end surface having an oblique shape for each of the plurality of T sides 1000 may be different. Specifically, the end surface having the diagonal shape of the longest T side (1000) may be formed with the gentlest slope, and the end surface having the diagonal shape of the shortest T side (1000) may be formed with the steepest slope. can

Specifically, referring to FIG. 11B, it can be seen that the 'inclination of the end surface having a diagonal shape' for each of the plurality of T-bars 1000 is different. Specifically, the 'slope of the end surface having an oblique shape' of the T bar (1000.1) disposed at the longitudinal center of the straight beam (1) is the most gentle, and the farther from the longitudinal center of the straight beam (1), the T The 'inclination of the end surface having an oblique shape' of the bar 1000 becomes gentle, and the T-bars 1000.2 and 1000.3 disposed at both ends of the longitudinal angle 100 'the inclination of the end surface having an oblique shape' may have the steepest slope.

In this way, a plurality of T-bars (1000) having different lengths and inclinations of the cross-section of one side are repeatedly arranged at regular intervals on the upper side of the straight beam (1), and the T-bar (1000) disposed protruding the straight beam (1) Since the end surface of has an oblique shape, the sides formed by the plurality of T-bars 1000 are formed like a part of a polygon, so that they can have a curved shape as a whole.

12 schematically shows a plurality of T-bars 1000 arranged according to an embodiment of the present invention.

12A and 12B, a plurality of T-bars 1000 are arranged to protrude horizontally from the upper side of the straight beam 1, and one side is welded to the longitudinal angle 100 located on the inside, and one side The side protrudes from the straight beam 1 and can be welded to the bottom plate 2000 and the stopper plate 3000.

In addition, the cross section of the T-bar 1000 to which the bottom plate 2000 and the stopper plate 3000 are welded has an oblique shape, so that one side of the bottom plate 2000 and the outer surface of the stopper plate 3000 form a curved shape can have

In addition, since the bottom plate 2000 is welded to the lower surfaces of the plurality of T-bars 1000, the structural stability of the curved beam structure 2 can be increased.

On the other hand, the curved beam structure (2) of the present invention is by the NRC method, and the straight beam (1), T-bar (1000), bottom plate (2000), and stopper plate (3000) are pre-assembled at the construction site can be installed on

Specifically, the longitudinal angle 100, the transverse angle 200, the deck support member 300, the formwork body 400 and the T-bar 1000, the bottom plate 2000, and the stopper constituting the straight beam (1) By pre-assembling the plate 3000 at the factory and pouring concrete on the upper side of the curved beam structure 2 at the construction site, the beam and the slab having a curved structure can be constructed together.

As such, according to the present invention, by applying the NRC method to the construction of the curved beam structure (2), '1. The process of arranging reinforcing bars, installing or removing formwork, and installing supports to support beams at the construction site, such as 'formwork prefabricated beam structure', can be omitted, shortening the construction period and reducing construction costs. .

13 schematically illustrates a floor plate 2000 according to one embodiment of the present invention.

As shown in FIGS. 13A and 13B, a portion of the upper side of the curved beam structure 2 is joined to a portion of the lower side of the flange portion 1002 of the plurality of T-bars 1000, and a portion of the lower side. One or more bottom plates 2000 bonded to the upper end surface of the deck receiving member 300, one side having a straight shape and the other side having a curved shape or an inclined shape to the straight beam 1; can do.

In addition, the bottom plate 2000 has one side having a straight shape welded to the deck receiving member 300, and the other side having a curved shape welded to the one or more stopper plates 3000, and the other side having the curved shape. The sidewall may have a curved shape by including a plurality of straight lines having gradually different inclinations.

13A shows a bottom plate 2000 viewed from the bottom. Specifically, the bottom plate 2000 is a flat plate member composed of steel such as an iron plate forming the outer surface of the lower side in a structure protruding outward of the curved beam structure 2, and as shown, one side is the deck receiving member 300 It is bonded to the upper end surface and can protrude horizontally from the upper side of the straight beam (1).

Specifically, one side of the bottom plate 2000 is bonded to the upper end surface of the deck receiving member 300 located on the outside of the straight beam 1, and may protrude from the upper side of the straight beam 1 in the outer horizontal direction. . That is, one side of the bottom plate 2000 may have a straight line extending in the same length in the longitudinal direction as the deck receiving member 300 of the straight beam 1.

On the other hand, one side protruding outward of the straight beam 1 of the bottom plate 2000 may have a curved shape. Specifically, one side having a curved shape of the bottom plate 2000 may be formed like a part of a polygon in which sides with different inclinations are continuous, rather than being completely circular or elliptical.

In this way, one side protruding outward of the straight beam 1 of the floor plate 2000 is composed of a plurality of straight lines whose inclination gradually changes, so that the stopper plate 3000 of the flat plate member can be welded to the corresponding side, It is possible to reduce construction cost and increase the structural stability of the beam structure because it is not necessary to bend the flat member.

On the other hand, the shape of one side protruding outward of the straight beam 1 of the bottom plate 2000, that is, the number of a plurality of straight lines constituting the curved side side may vary depending on the construction environment or the calculated construction cost. Specifically, as the number of straight lines constituting the outer surface of the curved beam structure 2 increases, the overall shape of the outer surface of the curved beam structure 2 may be formed into a more gentle curve.

Also, the bottom plate 2000 may be formed of one or more flat plate members. Specifically, in one embodiment of the present invention, as shown in FIG. 13A, the bottom plate 2000 is composed of one flat plate member.

Meanwhile, in another embodiment of the present invention, the bottom plate 2000 may be composed of two or more flat plate members. Specifically, when the bottom plate 2000 is composed of two flat plate members, the bottom plate 2000 may be constructed by manufacturing and welding a flat plate member symmetrical with respect to the longitudinal center of the straight beam 1.

In this way, the floor plate 2000 may be manufactured and constructed with one or more flat members according to the construction environment or construction cost.

On the other hand, Figure 13B is a projection of a plurality of T-bars 1000 welded to the bottom plate 2000, and as described above, the plurality of T-bars 1000 have different lengths, and one end surface Formed as an oblique line, it can be welded correspondingly to one side of the bottom plate 2000 consisting of a plurality of straight lines whose inclination gradually changes.

In this way, the bottom plate 2000 has a straight line on one side and can be welded to the deck receiving member 300 of the straight beam 1, and the other side has a curved end face and stopper plate of the T-bar 1000. It can be welded to one side of (3000).

14 schematically shows a stopper plate 3000 according to an embodiment of the present invention.

As shown in Figures 14A and 14B, the curved beam structure 2 is bonded to the end surface of the plurality of T-bars 1000 and the outer end surface of the bottom plate 2000 and has one or more rectangular cross sections 1 The above stopper plate 3000; may include.

In addition, the stopper plate 3000 has one side of the rectangular cross section welded to the end surface of one end of the T bar 1000 protruding horizontally from the upper side of the straight beam 1, and the other side of the rectangular cross section It is welded to the end surface of one end of another T-bar 1000 disposed on the left and right sides of the T-bar 1000, and the inclination formed by one or more rectangular cross sections along the oblique end surface of the T-bar 1000 is gradually , the outer surface of the stopper plate 3000 may form a curved shape as a whole.

The stopper plate 3000 is a flat plate member constituting the outer surface of the curved beam structure 2, and may be made of a steel plate having one or more rectangular cross sections. Specifically, the stopper plate 3000 may be vertically welded between the end surfaces of the plurality of T-bars 1000 to form the outer surface of the curved beam structure 2.

As shown in FIG. 14A, the stopper plate 3000 may be welded between the T-bars 1000.4 and 1000.5 to the end faces of the T-bars 1000.4 and 1000.5 and the outer end face of the bottom plate 2000.

Specifically, the lower side of the rectangular cross section constituting the stopper plate 3000 is welded to one side (having a curved shape) of the bottom plate 2000, and both sides of the rectangular cross section constituting the stopper plate 3000 are T-bar (1000.4 and 1000.5) (having an oblique shape).

That is, the rectangular cross section of the stopper plate 3000 may be continuously disposed between the plurality of T-bars 1000, and as described above, as the end surface of the T-bar 1000 has an oblique shape, the stopper plate ( 3000), the slope formed by the rectangular cross section may also gradually change so that the outer surface of the curved beam structure 2 may have a curved shape as a whole.

In this way, the stopper plate 3000 is composed of a structure in which a plurality of non-bending rectangular cross sections are repeated (while the slope gradually changes), so that the curved beam structure having a curved shape as a whole without bending steel materials such as iron plates ( 2) can be constructed.

Also, the stopper plate 3000 may be formed of one or more flat plate members. Specifically, in one embodiment of the present invention, as shown in FIGS. 14A and 14B, the stopper plate 3000 is composed of a plurality of flat plate members. That is, in this case, the stopper plate 3000 is composed of a plurality of flat plate members having a rectangular cross section, and is welded so that the inclination gradually changes along one side of the bottom plate 2000 between the plurality of T-bars 1000. , It is possible to form the outer surface of the curved beam structure (2).

Meanwhile, in another embodiment of the present invention, the stopper plate 3000 may be composed of one flat plate member. Specifically, when the stopper plate 3000 is composed of one flat plate member, the stopper plate 3000 may be manufactured by bending the flat plate member at regular intervals.

Preferably, one flat plate member is bent multiple times to correspond to the length of a plurality of straight lines constituting one side of the bottom plate 2000 and the inclination between the straight lines, thereby forming a stopper plate 3000 composed of one flat plate member. can be produced

That is, even in this case, the outer surface of the stopper plate 3000 may take a form in which straight cross sections are continuously connected without bending to take a perfect circular or elliptical shape.

In this way, the stopper plate 3000 may be manufactured and constructed with one or more flat members according to the construction environment or construction cost.

On the other hand, the horizontal length of the rectangular cross section constituting the stopper plate 3000 may correspond to the length of a plurality of straight sides constituting one side (having a curved shape) of the bottom plate 2000.

As such, the curved beam structure 2 of the present invention does not have a completely circular or elliptical outer surface, but has a polygonal shape having a plurality of straight sides, so that the outer surface can be made in a gentle curved shape when viewed as a whole .

In other words, since the curved beam structure 2 of the present invention does not have a completely circular or elliptical outer surface, it is not necessary to bend steel materials such as iron plates constituting the outer surface, which can reduce construction costs and has excellent structural stability Advantages there is

According to one embodiment of the present invention, as the length of the T-bar gradually changes and the cross-section of one end of the T-bar has an oblique shape, one side of the bottom plate welded to the cross-section of the T-bar and the outer surface of the stopper plate are curved can have a shape.

According to one embodiment of the present invention, it is possible to construct a curved beam structure having a curved outer surface with a flat plate member having a rectangular cross section without bending a steel material such as an iron plate.

According to one embodiment of the present invention, the curved beam structure is constructed by the NRC method, which can shorten the construction period and reduce construction costs.

As described above, although the embodiments have been described with limited examples and drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved. Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

1: Formwork prefabricated beam structure
100: longitudinal angle 200: transverse angle
300: deck support member 400: formwork body
500: reinforcing bar member 600: support angle
610: Rebar fixing pin 700: Block board member
800: connecting member C: concrete
D: deck plate
2: Curved Beam Structure
1000: T bar 1001: web part
1002: flange portion 2000: bottom plate
3000: stopper plate

Claims (6)

As a curved beam structure used for entry ramps,
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 and disposed outside the longitudinal angle and extending in a transverse direction; A deck receiving member having an L-shaped cross-section and extending in the longitudinal direction by being disposed outside the upper portion of the transverse angle; And both side surfaces of the beam, and a formwork body surrounding the bottom surface; including, a straight beam;
A web portion disposed on the upper surface of the straight beam, having different lengths, and formed in a vertical direction and a flange portion joined to one end of the web portion and formed in a horizontal direction, and an end welded to the upper surface of the longitudinal angle The side surface has a straight line shape, and the end surface of the other end to which the stopper plate is welded has a diagonal shape, a plurality of T-bars;
A portion of the upper side surface is joined to a portion of the lower surface of the flange portion of the plurality of T-bars, a portion of the lower side surface is joined to the upper end surface of the deck receiving member, one side has a straight shape, and the other side has an inclination. One or more floor plates having a curved shape or an inclined shape to the straight beam, including a plurality of linear structures that gradually change; and
One or more stopper plates bonded to the end surfaces of the plurality of T-bars and the outer end surface of the bottom plate and having one or more rectangular cross sections;
The length of the T-bar disposed at the center of the longitudinal angle of the longitudinal angle has the longest length, and the length of the T-bar gradually decreases as it is disposed at both ends of the longitudinal angle, so that both sides of the longitudinal angle have the longest length. As the length of the T-bar disposed at the end has the shortest length, the entry ramp section implemented by one side of the bottom plate and the outer surface of the stopper plate can be implemented in a curved shape as a whole without bending of the member, a curve mold beam structure.
The method of claim 1,
The straight beam,
The inner flange surface of the transverse angle is welded in surface contact to the outer flange surface of the longitudinal angle,
The outer end surface of the transverse angle is welded in line contact to the inner flange surface of the deck receiving member and the inner surface of the formwork body,
A portion of the flange surface of the lower side of the deck receiving member is welded to a portion of the upper side of the formwork body to be joined to each other, a curved beam structure.
The method of claim 1,
The lower surface of one end of the T-bar is welded to the upper side of the longitudinal angle located inside the straight beam, and the other end of the T-bar protrudes horizontally from the upper side of the straight beam, so that the other end of the T-bar The stopper plate is welded to the end face of the curved beam structure.
The method of claim 1,
The T bar,
A curved beam structure that is repeatedly arranged at regular intervals in the longitudinal direction from the upper side of the straight beam along the longitudinal angle.
The method of claim 1,
the bottom plate,
One side having a straight line is welded to the deck receiving member,
A curved beam structure in which the other side having a curved shape is welded to the one or more stopper plates.
The method of claim 1,
The stopper plate,
One side of the rectangular cross section is welded to the end face of one end of the T-bar protruding in the horizontal direction from the upper side of the straight beam,
The other side of the rectangular cross section is welded to the end face of one end of the other T-bar disposed on the left and right sides of the T-bar,
A curved beam structure in which the outer surface of the stopper plate forms a curved shape as the slope formed by one or more rectangular cross sections gradually changes along the end surface having a diagonal shape of the T bar.

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