KR20230031544A - Unit member for beam construction and beam formwork construction method using thereof - Google Patents

Abstract

The present invention relates to a formwork for beam and column construction, and comprises three deck plates having a specific shape developed by the applicant of the present application, those are, a corner plate (10), a connecting medium plate (20), and a unit extension plate (30), so that the formwork can be applied to both integral beam and column construction as needed and can be easily constructed in a size suitable for the size of the beam or column. In addition, the formwork can be assembled by a fixing means without separate welding work, and is thus developed as a low carbon emission deck construction method to suppress carbon generation, thereby achieving eco-friendly construction.

Description

Unit member for beam construction and method of constructing formwork for beam construction using the same {UNIT MEMBER FOR BEAM CONSTRUCTION AND BEAM FORMWORK CONSTRUCTION METHOD USING THEREOF}

The present invention relates to a formwork for beam construction, and more particularly, to a structure and method for constructing a formwork for beam construction through coupling between unit members.

A beam is formed on the ceiling of the building below the ceiling to increase bearing capacity, and a formwork for pouring concrete is installed to form the beam.

The formwork method for beam construction has been developed a lot. In general, the formwork for beam construction has a basic formwork to be delivered to the site, and when the basic formwork is installed on the site, the formwork is completed as additional reinforcing bars are placed, and concrete is ultimately poured into the formwork after that. do.

As shown in FIG. 1, in the basic form of the formwork 100, the side plates 120 are upright and coupled to both sides of the lower plate 110, and the U-shaped stirrup 130 is integrally coupled to the inside thereof am.

Here, since welding is required to combine the U-shaped stirrups 130, a separate electricity supply and a welding machine are essential, and marking to align vertically / horizontally with the U-shaped stirrups 130 spacing in the welding operation There is the hassle of having to do it separately, and various restrictions are followed, such as the need for skilled workers with the ability to weld and the need for no other workers around.

Moreover, it is difficult to accurately determine whether the welded portion has been properly welded, and the weak welded portion is separated from the concrete placing pressure, resulting in a bulging phenomenon that convexly protrudes from the bottom and side of the beam formwork as shown in FIG. 8, and in severe cases, the concrete Safety accidents such as spilling may occur.

Moreover, in the welding part, the iron plate (formwork) is twisted by thermal deformation, so the straightness is lowered and the workability is remarkably lowered. There is a vulnerability that holes may occur due to welding, and carbon is generated due to welding work and included in welding fume. It can harm the safety and health of workers due to fine dust, harmful gas, harmful rays, and noise.

And, as shown in FIG. 1, the beam deck of the current product constitutes one lower plate 110 according to the size of the beam, and one side plate 120 is coupled to both sides of the lower plate 110, respectively. It became. Therefore, in order to respond to various standards, there was an inefficient problem of having to have a forming machine of various sizes or to cut and attach two or more bottom plates or side plates.

Domestic Patent No. 10-1009753 “Formwork for beam structure”

Therefore, the present invention enables a solid formwork to be completed with a simple assembly without welding the formwork of the basic form, and an environmentally friendly construction that suppresses carbon generation and welding fumes without welding.

In addition, above all, it is to provide a unit member for beam construction that can be easily constructed according to various sizes of beams by easily constructing a formwork by gradually combining the bottom plate and the side plate and a beam formwork construction method using the same.

The present invention for achieving the above object is provided with three deck plates, that is, corner plates 10, connection media plates 20, and unit extension plates 30 having a specific shape developed by the applicant of the present application, According to the formwork, it can be applied to both integrated beams and columns, but it can be easily constructed in a size suitable for the size of the beam or column, and it is possible to assemble without separate welding work by a fixing means, thereby suppressing carbon generation. It is designed to be environmentally friendly construction.

The present invention is a method of combining the unit extension plates defined in the present invention according to the size of the beam or column, which can selectively build a formwork during beam and column construction, can be firmly completed by assembly without separate welding, and accordingly It has the advantage of being adjustable to fit the size of the beam.

In addition, there is an advantage of facilitating the construction of the formwork by enabling step-by-step lamination bonding of the side plates when constructing the formwork for beam construction.

1 is a block diagram of a general formwork for beam construction;
2 is a configuration diagram of a formwork 2 for beam construction according to an embodiment of the present invention;
3 is a view showing the coupling relationship between the corner plate 10, the connecting media plate 20, and the unit extension plate 30;
4 (FIG. 4a to FIG. 4b) is a photograph showing the coupling structure between the connection medium pipe 20 and the unit extension plate 30 using the fixing clip 50;
5 (FIGS. 5a to 5b) is a view showing the step-by-step coupling process of the formwork 2 for beam construction;
6 (FIG. 6a to FIG. 6b) shows a configuration in which the horizontal connector 60 is coupled through the side pressure binding member 70 in correspondence between the connecting rings 16, 26, and 36 facing the inside of the side plate SP. illustrated drawing,
7 is a view showing a step-by-step coupling process of the formwork 2 for beam construction using the U stirrup binding unit 42 in the concrete pouring space 8;
8 is a view showing a case where the beam is convexly bent outward due to the lateral pressure acting in the formwork.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is developed by the applicant of the present application by having three types of deck plate body (unit member) having a specific shape, that is, the unit member of the corner plate 10, the connecting media plate 20, and the unit extension plate 30. In addition, the gradual coupling between unit members without welding makes the beam construction smoother, and the size change construction can be easily performed according to the desired beam size.

Referring to FIG. 3, the definitions of the three unit members are as follows.

First, the corner plate 10 extends in the longitudinal direction, and beads 14 extending orthogonally inward are formed at both ends of the orthogonal wall 12 bent in a letter L, and beads 14 are formed at both ends of the bead 14 on both sides ) And the connecting ring 16 bent to form an acute angle is formed by extending. In some cases, a round or chamfered portion 12a may be formed at a corner of the L-shaped wall 12 .

Second, in the connection medium plate 20, beads 24 extending orthogonally are formed at both ends of the plate-shaped wall 22 extending in the longitudinal direction of the connection medium plate 20, and each bead 24 facing each other ) At the end of each other, a connecting ring 26 bent to form an acute angle with the bead 24 in the inward direction between each other is formed by extending.

Third, in the unit extension plate 30, beads 34 extending orthogonally are formed at both ends of the flat plate-shaped wall 32 extending in the longitudinal direction, and each bead 34 on both sides has an acute angle with the bead 34 It is formed by extending and forming a connecting ring 36 bent in the same direction. When embossing (M) is formed on each of the unit members, rigidity is imparted.

First, FIGS. 2 to 4 are views showing the configuration of a formwork 2 for beam construction according to an embodiment of the present invention. Referring to the drawing,

Two corner plates 10 are arranged spaced apart in accordance with the width w of the beam, and one connection medium plate 20 and one or more unit extension plates 30 are connected to each other between the spaced corner plates 10. combine At this time, the connection medium plate 20 is connected and coupled to any one of the left and right spaced corner plates 10 .

In the coupling part between the corner plate 10, the connection medium plate 20, and the unit extension plate 30 that are connected to each other, along the slope of the connecting rings 16, 26, and 36 forming an acute angle corresponding to each other. As the inclined surfaces are aligned with each other by gravity, the connecting rings (16) (26) (36), the bent parts (18) (28) (38), and the upright beads (14) (24) (34) come into natural contact with each other. It is bonded so that temporary bonding is more easily performed. This combination constitutes the lower plate (D.P), which is a component of the formwork for beam construction.

On both left and right corner plates 10 constituting the lower plate D.P, one connection medium plate 20 and one or more unit extension plates 30 are sequentially coupled to each other according to the height h of the beam. At this time as well, between the corner plate 10, the connection medium plate 20, and the unit extension plate 30, which are connected to each other, the inclined surfaces are mutually connected along the inclined surfaces of the connecting rings 16, 26, and 36 each formed at an acute angle. While searching for a fit, natural contact is made between the connecting rings (16) (26) (36), the bent parts (18) (28) (38), and the upright beads (14) (24) (34), thereby making the side plates (S.P) is composed. Here, it is preferable that the unit extension plate 30 is first laminated on the top of each corner plate 10 on the left and right, and then the connection media plate 20 is laminated on the upper end of the last.

As described above, when the side plates (S.P) are coupled to both sides of the lower plate (D.P), a pouring space 8 in which concrete can be filled is provided to form a formwork capable of beam construction.

The U stirrup 40 is embedded in the pouring space 8, and the main body rod of the U stirrup 40 is placed in contact with the connecting rings 16, 26, and 36, and in that state, the fixing clip ( 50), so that the main body bar is firmly coupled in contact with the connecting rings 16, 26, and 36, and at the same time, the corner plate 10, the connecting media plate 20, and the unit extension plate Even between (30), a formwork (2) is built that organically associates with the U stirrup (40) to maintain a solid coupling state to enable beam construction.

For reference, as shown separately in the lower right corner of FIG. 2 , a basic formwork may be constructed with only the corner plate 10 and the connecting media plate 20 . Based on this, it is possible to adjust the size of the required beam by additionally coupling the unit extension plate 30 to the bottom plate (D.P) and the side plate (S.P) according to the size of the required beam.

In the present invention, in fixing the U stirrup 40 upright in the concrete pouring space 8, it has a configuration that can be completed simply and stably by assembling without welding.

That is, referring to FIG. 4 ( FIGS. 4A and 4B ), the horizontal bar body 40a and the vertical bar body 40b of the U stirrup 40 are a fixing clip 50 configured by bending a steel wire several times as a fixing means. The corner plate 10, the connection medium plate 20, the unit extension plate 30, and the U stirrup 40 ensure a firm coupling in the state of contact with the bent parts 18, 28, and 88. By being united with the fixing clip 50 and integrally coupled as a whole, a solid coupled state is maintained.

The fixing clip 50 was specially developed by the applicant of the present invention, and is configured so that the bind part 56 is integrally formed with the connection part 54 inside the binding ring part 52 at both ends, but the binding ring part The binding end 52a of (52) is configured to be positioned close to the inside of the bent parts 18, 28, and 38 in a state of completion of coupling. In addition, the bind portion 56 is brought into a position close to the coupling line U-L located on the same line as the bent portions 18, 28, and 38.

This is because the fixing clip 50 is twisted with respect to the corner plate 10, the connecting media plate 20, the unit extension plate 30 and the U stirrup 40 in the state in which the fixing clip 50 is coupled. It is prevented so that the bond can be stably maintained while also maintaining a solid state.

Explaining this in more detail,

As shown in <Table 1>, the coupling part between the corner plate 10 and the connecting media plate 20 adjacent to each other is pulled by the coupling of the fixing clip 50 and follows an acute angle (inclined surface) from left to right (on the drawing). When viewed), the corner plate 10, the connecting media plate 20, and the U stirrup 40 are in close contact with each other while being pulled up and down. In this process, surface contact is made between the connecting rings 16 and 26, which is part a, and the bent parts 18 and 28, which are part b, form close and strong linear contact with each other, thereby preventing leakage of concrete to be poured. prevent more effectively. And surface contact is made between the upright beads 14 and 24, which is part c. That is, according to the shape of the corner plate 10 and the connection medium plate 20 and the coupling by the fixing clip 50, there are two surface contact points (part a, part c) and one line contact (part b) in total of three parts. The contact with is made closely.

As described above, the coupling portion between the corner plate 10 and the connecting media plate 20 is tightly coupled by organic coupling between the fixing clip 50 and the U stirrup 40. In addition, the organic coupling between the U stirrups 40 is made by the fixing clip 50 in the same way for the bent portions 18 and 28, which are not the coupling parts between the corner plate 10 and the connecting media plate 20. do.

”와 같은 형상으로도 할 수는 있으나, 가결합시 자연스런 밀착접촉이나 수밀성 등에 있어서 약하며, 고정클립(50)과 U스트럽(40) 간의 유기적인 결합에 있어서도 약한 단점이 있음을 확인하였다. On the other hand, the shape of the part coupled between the lower plate 10, the connection medium plate 20, and the unit extension plate 30 is not an acute angle.

It can also be made in the same shape, but it is weak in natural close contact or watertightness during temporary coupling, and it has been confirmed that there are weak disadvantages in organic coupling between the fixing clip 50 and the U stirrup 40.

From now on, in the process of building the formwork 2 for beam construction using the lower plate 10, the connecting media plate 20, the unit extension plate 30, the U stirrup 40, and the fixing clip 50 Suggest ways to improve existing difficult areas.

5 (FIG. 5a to FIG. 5b) is a view showing the step-by-step coupling process of the formwork 2 for beam construction, as described above.

ⓛ Arrange two corner plates 10 spaced apart according to the width w of the beam, and between the spaced corner plates 10, one connection medium plate 20 and one or more unit extension plates 30 are mutually Combined to be connected so that the lower plate (D.P) is configured.

And in the state in which the lower plate (D.P) is configured, the horizontal bar body (40a) of the U stirrup (40) on the upper part of the lower plate (D.P) is in contact with the bent parts (18, 28, 38), fixing clip 50 ) so that the U stirrups 40 are arranged back and forth in an upright state. At this time, when arranging the U stirrups 40 in front and back, the order may be coupled in order from the front to the rear. Alternatively, the front and rear parts may be coupled first, and then the middle may be coupled and then the remaining parts may be coupled. However, the order of combining the U stirrups 40 may be different depending on circumstances.

As in ⓛ above, after combining the U stirrup 40, as in ②→③→④, one or more unit extension plates 30 and one connecting medium are installed on the left and right corner plates 10 according to the height (h) of the beam. The plate 20 is sequentially laminated and coupled upward using the fixing clip 50 . As a result, the side plate (S.P) is formed, so that the concrete pouring space 8 in which concrete can be filled is provided inside the lower plate (D.P) and the side plate (S.P).

As such, in the present invention, when constructing the formwork 2 for beam construction using the unit members 10, 20, and 30, the side plates (SP) are easy to laminate in stages upward, which has the following advantages.

That is, the left and right length of the lower plate (D.P) corresponds to the width (w) of the beam, and if the side plate (S.P) is first built at the left and right ends of the lower plate (D.P), the concrete pouring space portion (8) formed accordingly becomes too narrow a space for workers to enter and do other work. Therefore, it is too difficult for a worker to enter the narrow space and perform any operation, including the operation of coupling the vertical bar body 40b of the U stirrup 40 to the side plate S.P.

Therefore, in the present invention, the unit extension plate 30 and the connection medium plate 20 are installed in phases on the left and right corner plates 10 constituting the lower plate D.P in accordance with the height h of the beam when constructing the side plate S.P. As they are stacked, they are immediately combined using the fixing clip (50). Then, when the stacking connection to the side plate (SP) is completed, it is not necessary to enter the inside of the concrete pouring space 8, which is a narrow space, and to perform a separate operation such as fixing the U stirrup 40.

6 (FIG. 6a to FIG. 6b) shows the horizontal connecting rod 60 in the through hole 74 of the side pressure binding member 70 in correspondence between the connecting rings 16, 26, and 36 facing the inside of the side plate (S.P). ) It is a surface showing a configuration combining .

When the U stirrup 40 is placed in the space 8 according to the amount of bending deformation when both vertical bar bodies 40b are bent upward, the difference between the intervals between the inner surfaces of the side plates S.P. may occur. Therefore, the horizontal connecting rod 60 firmly supports the left and right side plates (SP) so that they do not widen or shrink from each other, so that they can withstand the pressure applied during concrete pouring, and the upper ends of the side plates (SP) are prevented from opening. The width between the lower end and the upper end of the side plate (S.P.) is also kept the same.

On the other hand, as shown in FIG. 1, there has been a method of combining the horizontal connector 140, but both ends of the horizontal connector 140 are welded, screwed (piece), or wired, but the workability (productivity) is low.

Therefore, in the present invention, the work is increased through a separate lateral pressure binding member 70 for coupling the horizontal support 60. The lateral pressure binder 70 forms a slit fitting groove 72 inclined from the inside to the outside upward in accordance with the acute angle of the connecting rings 16, 26, and 36 at the lower part of the main body 71, thereby forming a slit fitting groove. (72) is coupled to the connecting ring (16) (26) (36) by fitting. In addition, a through hole 74 is formed inside the slit fitting groove 72 to penetrate vertically, and between the side pressure binders 70 coupled to the left and right side plates SP, both ends of the horizontal connector 60 are bent 62 make it plugged in

Referring to FIG. 6B, when the bent parts 62 at both ends of the horizontal connecting rod 60 are formed vertically long, they are in contact with the bent parts 18, 28, and 38 located at the bottom, and the fixing clip 50 However, it can be additionally fixed through another lateral pressure binder 70, which adds to the robustness of the formwork 2 for beam construction.

As shown in FIG. 6B, in line with the stepwise coupling of the unit extension plate 30 and the connecting medium plate 20 to the upper portions of both ends of the lower plate D.P, the transverse connecting rod 60 is connected through the side pressure binding member 70. It is desirable to proceed with the combining work at the same time.

As described above, when the horizontal connector 60 is coupled through the lateral pressure binding member 70, both the lateral pressure acting outward (spreading) and the lateral pressure acting inward (retracting) between the left and right side plates (SP) can be supported, According to the structural characteristics of the lateral pressure binding sphere 70, when the horizontal connecting rods 60 are coupled, the state in which they are bound to each other is firmly maintained.

The reason for this is as follows. That is, as shown in the enlarged view of FIG. 6A, since the slit fitting groove 72 of the lateral pressure binder 70 is inclined from the inside to the outside upward, it is inserted in the “↙” or “↘” direction when inserted into the connecting ring. Conversely, when you want to take it out from being inserted into the connecting ring (16) (36), you have to take it out in the “↗” or “↖” direction. In addition, the direction of insertion and removal of the horizontal connector 60 coupled to the through hole 74 of the side pressure binder 70 is the vertical direction (↓, ↑).

Here, when the both end bent parts 62 of the horizontal connecting rod 60 are inserted into the through holes 74 of the side pressure binders 70, the both ends bent parts 62 come into contact with the bent parts 18 and 38. “When the lateral pressure binder 70 tries to leave the connecting rings 16 and 36 in the “↗” or “↖” direction, the movement is restricted. Therefore, unless the worker pulls out the horizontal connecting rod 60 upward, a strong coupling is maintained by being associated with the lateral pressure binding member 70 with each other.

7 is a view showing a step-by-step coupling process of the formwork 2 for beam construction using the U-stirrup binding unit 42 in the concrete pouring space 8.

The U stirrup binding unit 42 is a structure in which U stirrups 40 arranged in front and rear are integrated with a plurality of binding reinforcements 43 extending forward and backward. The U stirrup binding unit 42 can omit the process of individually arranging the U stirrups 40 forward and backward on the upper part of the lower plate D.P.

In this way, after the U stirrup binding unit 42 is placed on the upper part of the lower plate D.P, the horizontal bar body 40a of each U stirrup 40 constituting the U stirrup binding unit 42 is bent ( It goes through a process of being in contact with 18) (28) (38) and fixed with the fixing clip (50).

Then, on the left and right side corner plates 10, one or more unit extension plates 30 and one connecting media plate 20 are sequentially stacked and combined upward with the fixing clips 50 according to the height h of the beam. is the same as described above.

In the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be determined by the described embodiments, but should be defined by the claims and their equivalents.

(2)--Formwork for beam construction (8)--Concrete casting space
(DP)--Bottom Plate (SP)--Side Plate
(10)--Corner board (12)--L-shaped wall
(14)--Bead (16)--Connection ring
(18)--bending part
(20)--connecting media plate (22)--wall
(24)--bead (26)--joint ring
(28)--bending part
(30)--unit extension plate (32)--wall
(34)--bead (36)--joint ring
(38)--bending part
(40)--U stirrup
(40a)--horizontal bar (40b)--vertical bar
(42)--U stirrup binding unit (43)-Binding reinforcing bar
(50)-fixing clip (52)-binding hook
(52a)-connection end (54)-connection
(56)--Bind part
(60)--horizontal connecting rod (62)--bent at both ends
(70)--lateral pressure binding tool (71)--body part
(72)--slit fitting groove (74)--through hole

Claims (3)

Beads 14 extending in the longitudinal direction and extending orthogonally inward are formed at both ends of the wall 12 having an L-shape, and the ends of each bead 14 on both sides are bent to form an acute angle with the bead 14. A corner plate 10 configured by extending the ring 16;
Beads 24 extending in the longitudinal direction and extending orthogonally are formed at both ends of the wall 22 having a flat plate shape, and at the ends of each bead 24 on both sides facing each other, beads 24 in the inward direction between each other a connecting medium plate 20 configured by extending and forming a connecting ring 26 bent to form an acute angle with the connecting ring 26;
Beads 34 extending in the longitudinal direction and extending orthogonally are formed at both ends of the wall 32 having a flat plate shape, and at the ends of each bead 34 on both sides facing each other, an acute angle is formed with the bead 34 and the same A unit member for beam construction consisting of; unit extension plate 30 formed by extending the connecting ring 36 bent in the direction.
With the unit members 10, 20, and 30 defined in claim 1,
Arrange the two corner plates 10 spaced apart according to the width w of the beam, and connect one connection medium plate 20 and one or more unit extension plates 30 between the spaced corner plates 10 to each other. The inclined surfaces of the connecting rings 16, 26, and 36 forming an acute angle correspond to each other at the coupling portions between the corner plate 10, the connecting medium plate 20, and the unit extension plate 30, which are coupled to each other but are connected to each other. As the slopes are aligned with each other by gravity, the connecting rings (16) (26) (36), the bent parts (18) (28) (38), and the upright beads (14) (24) (34) interact with each other. The lower plate (DP) is configured by making the temporary coupling easier by becoming a natural close coupling,
In the state in which the lower plate (DP) is configured, the horizontal bar (40a) of the U stirrup (40) on the upper part of the lower plate (DP) is in contact with the bent parts (18, 28, 38), fixing clip (50) ) so that the U stirrups 40 are arranged back and forth in an upright state, or the U stirrups binding unit 42 is placed on the top of the lower plate DP, each constituting the U stirrups binding unit 42. The horizontal bar body (40a) of the U stirrup (40) is in contact with the bent parts (18, 28, and 38) to be fixed with the fixing clip (50),
In the above state, one or more unit extension plates 30 and one connection media plate 20 are sequentially stacked upward on the left and right corner plates 10 using fixing clips 50 according to the height h of the beam. Between the corner plate 10, the connecting medium plate 20, and the unit extension plate 30, which are coupled but are similarly connected to each other, the inclined surfaces are mutually connected along the inclined surfaces of the connecting rings 16, 26, and 36 formed at an acute angle, respectively. While searching for a fit, the joint rings (16) (26) (36), the bent parts (18) (28) (38), and the upright beads (14) (24) (34) are naturally closely coupled to each other, so that the side plate (SP) is configured to provide a concrete pouring space 8 in which concrete can be filled inside the lower plate (DP) and the side plate (SP), and at the same time, the corner plate 10 and the connection media plate 20 , Beam formwork construction method using a unit member for beam construction, characterized in that the unit extension plate 30 is organically united by the U stirrup 40 and the fixing clip to form a solid combined state.
According to claim 2,
When the unit extension plate 30 and the connection medium plate 20 are stacked and combined in stages to form the left and right side plates SP on both ends of the lower plate DP,
In accordance with the stepwise coupling, the side pressure binders 70 are fitted and coupled between the connecting rings 16, 26, and 36 facing the inside of the left and right side plates SP, respectively, but the side pressure binders 70 are body parts ( The lower part of 71) is fitted through a slit fitting groove 72 formed obliquely from the inside to the outside in accordance with the acute angle of the connecting rings 16, 26, and 36,
A through hole 74 is formed on the inside of the slit fitting groove 72 to penetrate vertically, and between the side pressure binders 70 coupled to the left and right side plates SP, both ends of the horizontal connector 60 are bent 62 Beam formwork construction method using a unit member for beam construction, characterized in that it can be fitted to resist the lateral pressure of the concrete to be poured.

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