KR102652488B1 - Beam formwork construction method using unit member for beam construction - Google Patents

Abstract

The present invention relates to a formwork for beam and column construction, and includes three deck plates with specific shapes developed by the applicant, namely, a corner plate (10), a connecting media plate (20), and a unit extension plate (30). By doing so, it can be applied to both integrated beam and column construction as needed, and can be easily constructed in a size appropriate for the size of the beam or column, and can be assembled without separate welding work by fixing means, resulting in low carbon emissions. Developed using a deck construction method, it was designed to be eco-friendly by suppressing carbon emissions.

Description

Beam form construction method using unit members for beam construction {BEAM FORMWORK CONSTRUCTION METHOD USING UNIT MEMBER FOR BEAM CONSTRUCTION}

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

The ceiling of a building has a beam formed below the ceiling to increase bearing capacity, and to form the beam, a form into which concrete can be poured is installed.

Formwork methods for beam construction have been greatly developed. In general, the formwork for beam construction has a basic form for delivery to the site. Once the basic form is installed on site, the formwork is completed as additional reinforcing bars are placed, and ultimately, concrete is poured into the formwork. do.

As shown in FIG. 1, the basic form of the form 100 has side plates 120 erected on both sides of the lower plate 110, and a U-shaped stirrup 130 is integrally attached to the inside thereof. am.

Here, welding is required to combine the U-shaped stirrups 130, so a separate electricity supply and a welder are essential. In welding work, marking is required to adjust the spacing and vertical/horizontal alignment of the U-shaped stirrups 130. There is the inconvenience of having to do it separately, and there are various restrictions, such as the need for a skilled worker with the ability to weld and the need for there to be no other workers around.

Moreover, it is difficult to accurately determine whether the welded part has been properly welded, so the weakly welded part is separated by the pressure of pouring concrete, causing a swelling phenomenon that protrudes convexly from the bottom and side of the beam form as shown in Figure 8, and in severe cases, the concrete is damaged. Safety accidents such as spilling may occur.

Moreover, the steel plate (form) in the welded part is distorted due to thermal deformation, which reduces straightness and significantly reduces workability. There is a vulnerability that holes may be created by welding, and carbon is generated due to welding work and is included in welding fume. The safety and health of workers can be harmed by fine dust, harmful gases, harmful rays, and noise.

And, as shown in Figure 1, the beam deck of the current product consists of one lower plate 110 according to the size of the beam, and one side plate 120 is combined on both sides of the lower plate 110. It has been done. Therefore, in order to meet various standards, there was an inefficient problem of having to have forming machines of various sizes or cutting and joining two or more bottom plates or side plates.

Domestic registered patent No. 10-1009753 “Form for beam structure”

Therefore, the present invention allows a solid form to be completed by simply assembling the basic form without welding, and enables environmentally friendly construction by suppressing carbon generation and welding fume without welding.

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

The present invention to achieve the above object is necessary by providing three deck plates with a specific shape developed by the applicant, namely, a corner plate (10), a connection medium plate (20), and a unit extension plate (30). Accordingly, it can be applied to both form-integrated beams and columns, and allows easy construction in the appropriate size depending on the size of the beam or column. It also suppresses carbon generation by enabling assembly without separate welding work using fixing means. This was done to ensure environmentally friendly construction.

The present invention allows the formwork to be selectively constructed when constructing beams and columns and can be completed firmly by assembly without separate welding, by combining the unit extension plates defined in the present invention according to the size of the beam or column. It has the advantage of being adjustable to fit the size of the beam.

In addition, when constructing a form for beam construction, it has the advantage of facilitating the construction of the form by enabling step-by-step stacking and joining of the side plates.

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

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

The present invention is provided by providing unit members of three shapes of deck plates (unit members) having specific shapes developed by the applicant, namely, corner plate 10, connecting media plate 20, and unit extension plate 30. , the gradual joining of unit members without welding makes beam construction more smooth, and allows easy construction to change the size to suit the desired beam size.

Referring to Figure 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 an L shape, and beads 14 are formed at both ends of both beads 14. ) is formed by extending a joint ring 16 that is bent to form an acute angle. In some cases, round or chamfered portions 12a may be formed at the corners of the L-shaped wall 12.

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

Third, the unit extension plate 30 is formed with beads 34 extending perpendicularly at both ends of the flat 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 a connecting ring 36 that is bent in the same direction. Rigidity is imparted to each unit member by forming an embossing (M).

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

Two corner plates (10) are arranged to be spaced apart according to 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 corner plates 10 spaced apart from each other.

The joint portions between the corner plate 10, the connecting media plate 20, and the unit extension plate 30 that are connected to each other are formed along the slopes of the connecting rings 16, 26, and 36 that form acute angles corresponding to each other. As the slopes align with each other due to 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. When combined, temporary bonding becomes easier. By this combination, the lower plate (D.P), which is a component of the formwork for beam construction, is formed.

To the left and right corner plates 10 constituting the lower plate DP, one connection medium plate 20 and one or more unit extension plates 30 are sequentially stacked and combined according to the height (h) of the beam. At this time as well, the corner plate 10, the connection medium plate 20, and the unit extension plate 30, which are connected to each other, have inclined surfaces along the inclined surfaces of the connecting rings 16, 26, and 36, which are each formed at an acute angle. As they are aligned, the connecting rings (16) (26) (36), the bent portions (18) (28) (38), and the upright beads (14) (24) (34) are naturally and closely coupled to each other, thereby forming a natural close fit to the side plate. (S.P) is formed. Here, it is preferable that the unit extension plate 30 is first laminated on the upper part of each corner plate 10 on the left and right, and then the connection medium plate 20 is laminated on the upper end.

As described above, when the side plates (S.P) are joined to both sides of the lower plate (DP), a pouring space 8 that can be filled with concrete is provided on the inside, thereby forming a form capable of beam construction.

A U stirrup 40 is embedded in the pouring space 8, and the main body rod of the U stirrup 40 is positioned so as to contact the connecting rings 16, 26, and 36, and in that state, a fixing clip ( 50), the main body rod is in contact with the connecting ring (16) (26) (36) to ensure a firm connection, and at the same time, the corner plate (10), the connecting medium plate (20), and the unit extension plate (30) A formwork (2) is constructed that organically combines with the U stirrup (40) to maintain a firm bond and enable beam construction.

For reference, as shown separately at the bottom right of FIG. 2, a basic form can be constructed using only the corner plate 10 and the connecting medium plate 20. Based on this, it is possible to adjust the size of the required beam by additionally combining the unit extension plate (30) with the bottom plate (DP) and side plate (S.P) depending on the size of the beam required.

The present invention has a configuration that can be completed simply and stably through assembly without welding when fixing the U stirrup 40 upright within the concrete pour space 8.

That is, referring to FIG. 4 (FIGS. 4A and 4B), the horizontal bar 40a and the vertical bar 40b of the U stirrup 40 are fixed by a fixing clip 50 made by bending an iron wire several times as a fixing means. To ensure a firm connection while in contact with the bent portions (18) (28) (88), the corner plate (10), connection medium plate (20), unit extension plate (30), and U stirrup (40) By combining with this fixing clip 50 and being integrated as a whole, a solid connection state is maintained.

The fixing clip 50 was specially developed by the applicant of the present invention, and is configured so that a bind portion 56 is integrally formed inside the binding ring portion 52 at both ends via a connecting portion 54. The fastening end portion 52a of (52) is configured to be positioned close to the inside of the bent portions 18, 28, and 38 in the completed state. In addition, the bind portion 56 is positioned close to the joining line (U-L) located on the same line as the bent portions 18, 28, and 38.

This means that the fixing clip 50 is distorted with respect to the corner plate 10, the connecting media plate 20, the unit extension plate 30, and the U stirrup 40 when the fixing clip 50 is coupled. This prevents the bonding from occurring and maintains a stable bond while also maintaining a solid state.

To explain this in more detail,

As shown in <Table 1>, the joint portions between the adjacent corner plate 10 and the connecting media plate 20 are pulled by the combination of the fixing clip 50 and move from left to right (as shown in the drawing) along an acute angle (inclined surface). When viewed), the corner plate 10, the connecting medium plate 20, and the U stirrup 40 are pulled together in an upward and downward direction and are in close contact with each other. In this process, surface contact is made between the connecting rings (16) and (26), which are part a, and the bent parts (18) and (28), which are part b, make close and strong line contact with each other, thereby preventing water leakage from the poured concrete. prevention becomes more effective. And face 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 connecting media plate 20, as well as the connection by the fixing clip 50, there are a total of 3 parts: 2 surface contact points (part a, part c) and 1 line contact point (part b). Close contact is established.

As shown above, the joint portion between the corner plate 10 and the connecting medium plate 20 is tightly coupled by organic coupling between the fixing clip 50 and the U stirrup 40. In addition, for the bent portions 18 and 28, which are not the joint portions between the corner plate 10 and the connecting medium plate 20, an organic connection between the U stirrup 40 is achieved by the fixing clip 50. do.

Meanwhile, the shape of the part joined between the lower plate (10), the connecting medium plate (20), and the unit extension plate (30) is not an acute angle, but rather a “shape”. Although it can be made into a shape like “, it is weak in terms of natural close contact and watertightness when temporarily bonded, and it has been confirmed that there is a weakness in the organic bond between the fixing clip (50) and the U stirrup (40).

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

Figure 5 (FIGS. 5a to 5b) is a diagram showing the step-by-step joining process of the formwork 2 for beam construction, as previously described.

ⓛ Two corner plates (10) are arranged to be spaced apart according to the width (w) of the beam, and one connection medium plate (20) and one or more unit extension plates (30) are placed between the spaced corner plates (10). Connect and connect to form the lower plate (D.P).

And with the lower plate (D.P) configured, the horizontal bar body (40a) of the U stirrup (40) is in contact with the bent portions (18) (28) (38) on the upper part of the lower plate (D.P) and the fixing clip (50) ) so that the U stirrup 40 is arranged front and rear in an upright state. At this time, when arranging the U stirrup 40 back and forth, the order can be combined from front to rear. Alternatively, it can be connected to the front and rear parts first, then the center, and then to the remaining parts. However, the binding order of the U stirrups 40 may vary depending on the situation.

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

As such, in the present invention, when constructing the beam construction form (2) using the unit members (10), (20) (30), the side plate (S.P) can be easily laminated and joined to the upper part in stages, which has the following advantages.

In other words, the left and right lengths of the lower plate (D.P) correspond to the width (w) of the beam. If the side plates (S.P) are built first at the left and right ends of the lower plate (D.P), the concrete pour space (8) formed accordingly. The space becomes too narrow for workers to enter and do other work. Therefore, it is too difficult for workers to enter the narrow space and perform any work, including joining 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 connecting medium plate 20 are gradually installed on the left and right corner plates 10 constituting the lower plate (D.P.) when constructing the side plate (S.P.) according to the height (h) of the beam. As they are stacked, they are immediately combined using the fixing clips (50). Then, when the stack bonding to the side plate (S.P) is completed, there is no need to go into the concrete pouring space 8, which is a narrow space, and perform separate work such as fixing the U stirrup 40.

6 (FIGS. 6A to 6B) shows the horizontal connection bar 60 in the through hole 74 of the side pressure fastener 70, corresponding to the connection rings 16, 26, and 36 facing the inside of the side plate (S.P). ) This is a view showing a configuration that combines.

The U stirrup 40 has a gap difference between the inner surfaces of the side plates (S.P) when the U stirrup 40 is positioned within the space 8 according to the amount of bending deformation when bending both vertical bars 40b upward. may occur. Therefore, the horizontal connecting bar (60) firmly supports the left and right side plates (S.P.) so that they neither spread nor shrink, so that they can withstand the pressure applied when placing concrete, and prevent the upper end of the side plate (S.P.) from spreading apart. The width between the bottom and top of the side plate (S.P) is also kept the same.

Meanwhile, there has been a method of combining the horizontal connecting bar 140 as shown in FIG. 1, but both ends of the horizontal connecting bar 140 were joined by welding, screws (pieces), or iron wire, but the workability (productivity) is low.

Accordingly, in the present invention, the work is increased through a separate lateral pressure fastener (70) for coupling the horizontal support (60). The side pressure fastener 70 forms a slit fitting groove 72 inclined upward from the inside to the outside in accordance with the acute angle of the connecting rings 16, 26, and 36 in the lower part of the main body 71, thereby forming a slit fitting groove. (72) is joined by fitting into the connecting rings (16), (26) and (36). In addition, a through hole 74 penetrating upward and downward is formed inside the slit fitting groove 72, and a bent portion 62 at both ends of the horizontal connection bar 60 is formed between the lateral pressure fasteners 70 coupled to the left and right side plates SP. Make it fit.
At this time, the adjacent portion between the lower end of the through hole 74 and the lower end of the slit fitting groove 72 is connected to each other, as shown in portion “A” shown in FIG. 6A. The reason is that when the bent portions at both ends 62 of the horizontal connecting bar 60 are inserted into the through hole 74 of the side pressure fastener 70, the bent portions at both ends 62 are in contact with the bent portions 18 and 38. When the lateral pressure fastener (70) tries to leave the connecting ring (16) (36) in the “↗” or “↖” direction, its movement is restricted and it combines with the lateral pressure fastener (70) to form a solid connection. keep it maintained

Referring to FIG. 6b, when the bent portions 62 at both ends of the horizontal connecting bar 60 are formed to be long up and down, they are in contact with the bent portions 18, 28, and 38 located at the bottom, and the fixing clip 50 It can be additionally fixed through or another lateral pressure fastener (70), which adds to the sturdiness of the beam construction form (2).

As shown in Figure 6b, in accordance with the step-by-step coupling of the unit extension plate 30 and the connection medium plate 20 to the upper portions of both ends of the lower plate (D.P.), the horizontal connection bar 60 is connected through the lateral pressure fastener 70. It is desirable to proceed with the combining work simultaneously.

As described above, when the horizontal connection bar 60 is coupled via the lateral pressure fastener 70, both the lateral pressure (opening) acting outward and the lateral pressure (shrinking) acting inward between the left and right side plates (S.P.) can be supported. , When the horizontal connectors 60 are coupled according to the structural characteristics of the lateral pressure coupler 70, they remain firmly coupled to each other.

The reason for this is as follows. That is, as shown in the enlarged view of FIG. 6A, the slit fitting groove 72 of the side pressure fastener 70 is formed slanted upward from the inside to the outside, so when inserted into the connecting ring, it is inserted in the “↙” or “↘” direction. Conversely, if you want to remove it while it is inserted into the connecting ring (16) (36), you must pull it out in the “↗” or “↖” direction. And the horizontal connecting bar 60 coupled to the through hole 74 of the lateral pressure fastener 70 is inserted and removed in the up and down directions (↓, ↑).

Here, when the bent portions at both ends 62 of the horizontal connecting bar 60 are inserted into the through hole 74 of the side pressure fastener 70, the bent portions at both ends 62 are in contact with the bent portions 18 and 38. “When the lateral pressure fastener (70) tries to leave the connecting ring (16) (36) in the “↗” or “↖” direction, its movement is restricted. Therefore, unless the worker pulls the horizontal connecting bar 60 upward, it is combined with the lateral pressure fastener 70 to maintain a firm connection.

Figure 7 is a diagram showing the step-by-step joining 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 that integrates the U stirrups 40 arranged front and rear with a plurality of binding reinforcing bars 43 extending front and rear. The U stirrup binding unit 42 can omit the process of arranging the U stirrups 40 back and forth one by one 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 (DP), the horizontal bar body 40a of each U stirrup 40 constituting the U stirrup binding unit 42 is bent at the bent portion ( 18) It goes through a process of being in contact with (28) (38) and fixed with a fixing clip (50).

Afterwards, a process of stacking and combining one or more unit extension plates (30) and one connecting medium plate (20) sequentially upward to the left and right corner plates (10) with fixing clips (50) according to the height (h) of the beam. is the same as described previously.

In the above description of the present invention, specific embodiments have been described, but various modifications may 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 by the scope of the patent claims and their equivalents.

(2)--Form for beam construction (8)--Concrete pouring space
(DP)--Bottom plate (SP)--Side plate
(10)--Corner plate (12)--L-shaped wall
(14)--Bead (16)--Conjunction ring
(18)--Bending part
(20)--Connection media plate (22)--Wall
(24)--Bead (26)--Conjunction ring
(28)--Bending part
(30)--Unit extension plate (32)--Wall
(34)--Bead (36)--Conjunction ring
(38)--Bending part
(40)--Ustrup
(40a)--horizontal bar (40b)--vertical bar
(42)--U stirrup binding unit (43)--Binding rebar
(50)--Fixing clip (52)--Tie ring part
(52a)--Tie end (54)--Connect part
(56)--Bind part
(60)--Horizontal connection bar (62)--Bent part at both ends
(70)--Side pressure binding port (71)--Main body
(72)--Slit insertion groove (74)--Through hole

Claims (3)

Beads 14 extending orthogonally inward are formed at both ends of the wall 12, which extends in the longitudinal direction and has an L-shape, and at the ends of each bead 14 on both sides, a joint is bent to form an acute angle with the bead 14. A corner plate (10) formed by extending a ring (16);
Beads 24 extending perpendicularly are formed at both ends of the wall 22, which extends in the longitudinal direction and has a plate shape, and at the ends of each bead 24 on both sides facing each other, beads 24 are formed in the inner direction between each other. A connection medium plate (20) formed by extending a connection ring (26) bent to form an acute angle with;
Beads 34 extending at right angles are formed at both ends of the wall 32, which extends in the longitudinal direction and has a flat shape, and the ends of each bead 34 on both sides facing each other form an acute angle with the bead 34 and are the same. Provided with a unit member for beam construction consisting of a unit extension plate (30) formed by extending a connecting ring (36) bent in the direction,
The two corner plates (10) are arranged to be spaced apart according to the width (w) of the beam, and one connection medium plate (20) and one or more unit extension plates (30) are placed between the spaced corner plates (10). The joint portions between the corner plate 10, the connecting media plate 20, and the unit extension plate 30, which are connected to each other, have connecting rings 16, 26, and 36 forming an acute angle corresponding to each other. As the slopes are aligned with each other by gravity along the slope, the connecting rings (16) (26) (36), bent parts (18) (28) (38), and upright beads (14) (24) (34) are formed. The lower plate (DP) is formed by natural close bonding with each other,
In the state where the lower plate (DP) is configured, the horizontal bar body (40a) of the U stirrup (40) is in contact with the bent portions (18) (28) (38) on the upper part of the lower plate (DP) and the fixing clip (50) ) so that the U stirrup 40 is arranged front and rear in an upright state, or the U stirrup binding unit 42 is placed on the upper part of the lower plate DP to form the U stirrup binding unit 42. The horizontal bar body 40a of the U stirrup 40 is in contact with the bent portions 18, 28, and 38 and is fixed with a fixing clip 50,
In the above state, on the left and right corner plates 10, one or more unit extension plates 30 and one connection medium plate 20 are sequentially stacked and combined upward in accordance with the height (h) of the beam to construct a side plate (SP). Thus, a concrete pouring space (8) is provided inside the lower plate (DP) and the side plate (SP), but when constructing the side plate (SP), the unit extension plate (30) and the connecting medium plate (20) are joined in stages to the upper part. Connect the vertical bar body (40b) of the U stirrup (40) and the side plate (SP) using the fixing clip (50),
A lateral pressure fastener 70 is fitted between the connecting rings 16, 26, and 36 facing the inside of the left and right side plates (SP), and the lateral pressure fastener 70 is attached to the lower part of the main body 71. The connecting rings (16) (26) (36) are fitted through a slit fitting groove (72) formed slanted upward from the inside to the outside in accordance with the acute angle of the connecting ring (16) (26) (36), and penetrate up and down inside the slit fitting groove (72). A through hole 74 is formed, and the adjacent portion between the lower end of the through hole 74 and the lower end of the slit fitting groove 72 is connected to each other, so that the bent portions 62 at both ends of the horizontal connecting bar 60 are lateral pressure fasteners. When inserted into the through hole 74 of (70), the bent portions at both ends (62) are in contact with the bent portions (18) and (38), and the side pressure fastener (70) connects the connecting rings (16) (36). A beam that is characterized in that it restricts movement when trying to deviate in the ↗” or “↖” direction, maintains a solid connection by combining with the lateral pressure binder (70), and resists the lateral pressure of the poured concrete. Beam form construction method using construction unit members. delete delete

Images