KR102382532B1 - Lateral pressure binder of formwork for beam, column and wall construction - Google Patents

Abstract

The present invention relates to a lateral pressure fastener of a formwork for beam or column and wall construction, which allows eco-friendly construction. According to the present invention, the lateral pressure fastener (70) for coupling a horizontal connector (60) is formed to resist a lateral pressure of concrete poured between left and right side plates during beam or column and wall construction.

Description

Lateral pressure binding sphere of formwork for beam, column and wall construction

The present invention relates to a formwork for construction of a beam, and in particular, to a lateral pressure binding tool for well-bearing the pressure caused by pouring concrete into the formwork when constructing a column or wall including a constructed beam.

On the ceiling of the building, a beam is formed below the ceiling in order to increase the bearing capacity, and in order to form the beam, a form for pouring concrete is installed.

The formwork method for beam construction has been developed a lot. In general, there is a basic form of formwork for delivery to the site for beam construction, and when the formwork of the basic form is installed on the site, additional reinforcing bars are added to complete the formwork, and then, ultimately, concrete is poured into the formwork. do.

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

Here, in order to integrally combine the U-shaped stirrups 130, welding is performed. For the welding operation, electricity supply, a welding machine, safety protection equipment, etc. must be provided, and a skilled welder must be present. Above all, electricity and high-temperature welding have a risk of safety accidents, and welding fumes that cause fine dust, harmful gas, harmful rays, and noise can harm the health of workers.

On the other hand, the existing conventional beam formwork mainly uses plywood (floor plate) and flow product (side plate) to withstand the concrete pressure, but the recent basic formwork uses a thin steel plate as the formwork material. As shown above, a fullness phenomenon that convexly protrudes from the bottom of the formwork to the side may occur or, in severe cases, a safety accident in which concrete is poured.

In order to prevent such a fullness phenomenon, various methods are used, and as an example, as shown in FIG. 1 , the horizontal connecting rod 140 is coupled and both ends of the horizontal connecting rod 140 are fixed by a method such as welding.

Although the above method can maintain the formwork firmly, as shown in FIG. 3 , when reinforcing or additional work of reinforcing bars 150 formed in the front and rear, the transverse connecting rod 140 is removed with a welding machine and reinforcing bars 150 When the reinforcement is finished, it must be fixed again by welding. This method reduces work efficiency and increases cost and time. That is, in the case of a beam construction formwork, it is moved in a state in which the horizontal connecting rod 140 is coupled to prevent the spread between the side plates 120 in the assembled state when moving to the site. (140) is inconvenient to remove.

And when the horizontal connecting rod 140 is removed with a welding machine, the side plate 120 of the formwork is pushed in or spread out due to the elasticity of the U-shaped stirrup 130 made by bending reinforcing bars, and the formwork may be twisted. Therefore, there is a need for a lateral pressure binding tool that can prevent distortion of the formwork, allow the formwork to withstand the lateral pressure of concrete, and simply perform additional work such as reinforcement.

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

Factory-manufactured RC beam permanent form technology development, 2019, KICT

Therefore, the present invention enables an eco-friendly construction that suppresses carbon generation and welding fume by allowing a solid form to be completed only by simply assembling a basic formwork without welding, and as part of this non-welding formwork assembly. It is to provide a lateral pressure binding tool of a beam construction form that can be easily and firmly combined without welding even for a horizontal connecting rod to prevent construction defects (satisfaction phenomenon) due to lateral pressure applied to the side plate during concrete pouring.

The present invention for achieving the above object constitutes a lateral pressure binding sphere 70 for coupling the horizontal connecting rod 60 to resist the lateral pressure of the concrete being poured between the left and right side plates (S.P) during construction of beams, columns and walls,

The side pressure binding sphere 70 forms a through hole 74 penetrating the main body part 71 up and down, and between the lateral pressure binding spheres 70 coupled to the left and right side plates SP, both ends of the horizontal connecting rod 60 are bent. (62) is fitted in the downward direction (↓) in the through hole 74 to resist the lateral pressure of the concrete being poured,

On the inside of the through hole 74, a slit fitting groove 72 inclined upward from the lower end of the main body 71 according to the acute angle of the connecting ring 16 configured in the side plate SP is formed to form a connecting ring ( 16), but when it is inserted into the connecting ring (16), it should be inserted in the “↙” or “↘” direction. to fall in the direction

When the bent portions 62 at both ends of the transverse connecting rod 60 are fitted into the through holes 74 of the side pressure binding spheres 70, the bent portions 62 at both ends come into contact with the bent parts 18, so that the lateral pressure binding spheres are in a state of contact. When 70 tries to separate the connecting ring 16 in the “↗” or “↖” direction, the bent portions 62 at both ends are caught in the bent portion 18, and as a result, the side pressure binding sphere 70 is separated (moved). ) to prevent the horizontal connection rod 60 from being pulled out to the top by the operator, so that the horizontal connection rod 60 and the side pressure binding tool 70 are combined with each other to maintain a solid connection, so that the necessary part between the left and right side plates (SP) is immediately transverse connection rod (60) It is designed to facilitate the binding and disengagement by making it possible to bind and release, as well as to reduce carbon generation by excluding a separate welding operation so that eco-friendly construction can be achieved.

The present invention can be firmly completed by assembling without separate welding when constructing the formwork for beam construction, and as part of the formwork assembly by non-welding, poor construction (satisfaction phenomenon) due to the lateral pressure applied to the side plate during concrete pouring is eliminated. There is an advantage in that it can be easily and firmly combined without welding even for the horizontal connecting rod to prevent it.

1 (FIG. 1A and FIG. 1B) is a view showing an existing case for resisting a general beam construction form and lateral pressure;
2 is a view showing a case of convex bending outward due to lateral pressure acting in the beam formwork;
3 is a view showing an existing case to resist the lateral pressure acting in the beam formwork;
Figure 4a is a configuration diagram of the formwork for beam construction (2) according to an embodiment of the present invention;
Figure 4b is a view showing the coupling relationship between the unit member, that is, a corner plate (A), a connecting medium plate (B), and a unit extension plate (C);
5 (FIG. 5A to FIG. 5B) is a photographic view showing a coupling structure between unit members using a fixing clip 50;
6 is a view showing a configuration in which the horizontal connecting rod 60 is coupled between the connecting rings 16 facing the inside of the side plate SP through the side pressure binding sphere 70 according to an embodiment of the present invention;
7 ( FIGS. 7A to 7B ) is a photographic diagram corresponding to FIG. 6 ,
8 is a view showing a configuration in which the horizontal connecting rod 60 is combined by applying the side pressure binding sphere 70 according to an embodiment of the present invention to the integrated side plate (SP);
9 is a view showing a configuration in which the horizontal connecting rod 60 is coupled between the side plates SP through the side pressure binding sphere 70A according to another embodiment of the present invention;
10 is a view showing that the lateral pressure binding sphere 70 can be equally applied to withstand lateral pressure when the formwork of a wall or column is formed.

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

Prior to describing the configuration for the lateral pressure binding sphere 70 of the formwork for beam construction having the features of the present invention, the deck plate body (unit member) of three shapes having a specific shape developed by the applicant of the present application (unit member), that is, a corner plate (A), the connecting medium plate (B), and the unit extension plate (C) will be described first.

The unit members (A) (B) (C) allow for smoother beam construction by gradual coupling between unit members without welding work, and make it easier to change the size of the beam to fit the desired size of the beam.

Referring to FIG. 4 ( FIGS. 4A and 4B ), the definitions of the three unit members A, B, and C are as follows.

First, the corner plate (A) is extended in the longitudinal direction and formed with beads 14 extending orthogonally to the inside at both ends of the orthogonal-shaped wall 11 bent in the L-shape, and beads 14 on both ends of the beads 14 ) and the connecting ring 16 that is bent to form an acute angle is extended and configured.

Second, the connecting medium plate (B) is formed with beads 14 extending orthogonally at both ends of the plate-shaped wall 12 extending in the longitudinal direction, and at the ends of each of the beads 14 facing each other, each other A connecting ring 16 that is bent to form an acute angle with the bead 14 in the inward direction is extended and configured.

Third, the unit extension plate (C) is formed with beads 14 extending orthogonally at both ends of the plate-shaped wall 12 extending in the longitudinal direction, and the beads 14 and acute angles on each bead 14 on both sides. A connecting ring 16 that forms and is bent in the same direction is formed to extend. When the embossing (M) is formed on each of the unit members, rigidity is imparted.

Next, with reference to FIGS. 4 ( FIGS. 4A and 4B ) to 5 ( FIGS. 5A and 5B ), the beam construction formwork 2 constructed using the unit members (A) (B) (C) consists of is a diagram showing Referring to the drawing,

Two corner plates (A) are arranged to be spaced apart according to the width (w) of the beam, and one connecting media plate (B) and one or more unit extension plates (C) are connected to each other between the spaced corner plates (A). combine At this time, the connection medium plate (B) is connected to and coupled to any one of the left and right corner plates (A) spaced apart.

At the coupling portions between the corner plate (A), the connecting medium plate (B) and the unit extension plate (C) that are connected to each other, the inclined surfaces are mutually corresponding to each other along the inclined surface of the connecting ring 16 forming an acute angle by gravity. As well as between the connecting rings 16 that come into contact with each other to fit, the bent portion 18 and the bead 14 are in close contact with each other, so that the temporary coupling is made easier. By this combination, the lower plate (D.P), which is a component of the formwork for beam construction, is constituted.

One connecting media plate (B) and one or more unit extension plates (C) are sequentially coupled to the left and right corner plates (A) constituting the lower plate (D.P) to be stacked according to the height (h) of each beam. At this time as well, between the corner plate (A), the connecting medium plate (B), and the unit extension plate (C), which are connected to each other, along the inclined surface of the connecting ring 16 formed at an acute angle, respectively, the connecting ring is searched so that the inclined surfaces are aligned with each other. Including (16), the bent portion 18 and the bead 14 are naturally closely coupled to each other, thereby forming the side plate SP. Here, it is preferable that the unit extension plate (C) is first laminated on the left and right corner plates (A), and the connection media plate (B) 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 that can be filled with concrete is provided to form a formwork capable of beam construction.

The U stirrup 40 is embedded in the pouring space 8, and the body bar of the U stirrup 40 is positioned so as to be in contact with the connecting ring 16, and in this state, the body bar is moved through the fixing clip 50 While in contact with the connecting ring 16, a strong bond is made, and at the same time, it is organically associated with the U stirrup 40 between the corner plate (A), the connecting medium plate (B), and the unit extension plate (C) to provide a strong The formwork (2) is constructed so that the bonding state is maintained and the beam construction is possible.

The fixing clip 50 was specially developed by the applicant of the present invention, and in fixing the U stirrup 40 in the concrete pouring space 8 upright, it can be completed simply and stably by assembling without welding. has a configuration The fixing clip 50 is a corner plate (A), connecting the horizontal bar body (40a) and the vertical bar body (40b) of the U stirrup 40 so as to be firmly coupled in a state in contact with the bent part (18). The medium plate (B), the unit extension plate (C) and the U stirrup 40 are united with the fixing clip 50 to be integrally coupled as a whole, thereby maintaining a strong coupling state.

The fixing clip 50 is configured such that the binding part 56 is integrally formed through the connecting part 54 inside the binding ring part 52 of both ends, but the binding end part 52a of the binding ring part 52 is coupled It is configured to be positioned close to the inside of the bent portion 18 in the completed state. In addition, the bind portion 56 is positioned close to the coupling line U-L positioned on the same line as the bent portion 18 . This is that the fixing clip 50 is twisted with respect to the corner plate (A), the connecting medium plate (B), the unit extension plate (C) and the U stirrup 40 in the state in which the fixing clip 50 is coupled. This allows for a stable bond to be maintained while maintaining a firm state.

From now on, the lateral pressure binding sphere 70 (hereinafter also simply referred to as 'side pressure binding sphere') of the beam construction formwork of the present invention will be described.

6 is a view showing the configuration of the side pressure binding sphere 70 according to an embodiment of the present invention, and corresponding to the side pressure between the connecting rings 16 facing the inside of the side plate SP in the beam construction form (2). The horizontal connecting rod 60 is coupled through the binding sphere 70 .

Meanwhile, the above-described U stirrup 40 is the inner surface of the side plate SP when the U stirrup 40 is positioned in the space 8 according to the amount of bending deformation when both vertical bars 40b are bent upwards. There may be gaps between the gaps. Therefore, the horizontal connecting rod 60 firmly supports between the left and right side plates (SP) so that they do not open or shrink from each other, so that they can withstand the pressure applied during concrete pouring well, and the upper end of the side plate (SP) is prevented from being opened. The width between the lower end and the upper end of the side plate SP is also maintained the same.

Here, the workability for coupling the horizontal support 60 through the side pressure binding sphere 70 of the present invention is increased. Referring to FIG. 7 , the lateral pressure binding sphere 70 forms a slit fitting groove 72 that is inclined from the inside to the outside upward in accordance with the acute angle of the connecting ring 16 in the lower portion of the main body 71 , so that the slit fitting groove is formed. (72) is coupled by being fit-fitted to the connecting ring (16). And between the lateral pressure binding spheres 70 coupled to the left and right side plates SP by forming a through-hole 74 penetrating vertically inside the slit fitting groove 72, the bent portions 62 at both ends of the horizontal connecting rod 60 are make it fit

Referring to ② of FIG. 7A, when the bent portions 62 at both ends of the horizontal connecting rod 60 are formed to be long vertically, the fixing clip 50 or another side pressure is placed in contact with the bent portion 18 located at the bottom. It can be additionally fixed through the binding sphere 70, which adds to the rigidity of the beam construction form (2). In addition, as shown in FIG. 7b , if the lateral pressure binding tool 70 is used, the longitudinal binding reinforcing bar 66 can also be combined, which makes it possible to increase the resistance to the lateral pressure separately from the horizontal connecting rod 60 .

When the binding reinforcing bar 66 is coupled to the through hole 74 of the lateral pressure binding sphere 70, the bending portion 18 of the unit members (A) (B) (C) adjacent up and down and the binding reinforcing bar 66 are engaged. When a force is applied to the lateral pressure binding tool 70 in the outward direction, the bent portion 18 and the connecting ring 16 between the adjacent unit members (A) (B) (C) are more closely attached to each other, which is necessary for concrete pouring. The effect of preventing leakage is generated.

In addition, the side pressure binding sphere 70 can replace the fixing clip 50 by using it alone on one side instead of using the left and right pair in both directions for the coupling of the horizontal connecting rod 60 .

To explain this in more detail,

As shown in <Table 1>, when the binding reinforcing bar 66 or wedge is coupled to the through hole 74 of the lateral pressure binding tool 70, the binding reinforcing bar 66 is formed with the bent portion 18 of the unit members (③ and ④) and will be intertwined

In this state, when the binding reinforcing bar 66 or the wedge is pushed in the same direction as ⓛ, the lateral pressure binding sphere 70 is also pushed in the opposite direction to the bent portion 18 (the opposite direction to the ⑤ point). And the pushed lateral pressure binding sphere 70 pulls the unit member ③ to the point ⑤ as in ⑥, so that the bent portions 18 and ⑤ points of the unit member ③ and the unit member ④ and the connecting ring 16 are firmly fixed to each other. .

This is also the operating principle of the lateral pressure binding sphere 70 in which the lateral pressure binding sphere 70 tightly seals the bent portion 18 and the connecting ring 16, and the lateral pressure binding sphere 70 is the binding reinforcing bar 66 or wedge It is also possible to replace the fixing clip 50 in conjunction with.

Referring to FIG. 7A, as shown in the figure, the transverse connecting rod 60 through the side pressure binding sphere 70 according to the stepwise coupling of the unit extension plate C and the connecting medium plate B on the upper portions of both ends of the lower plate DP. ), it is desirable to proceed with the work of combining them at the same time.

As described above, when the horizontal connecting rod 60 is coupled through the lateral pressure binding sphere 70 as a medium, both the lateral pressure acting outward (expanding) and the lateral pressure acting inward (retracting) between the left and right side plates SP can be supported. , when the horizontal connecting rod 60 is coupled according to the structural characteristics of the lateral pressure binding sphere 70, the binding state to each other is firmly maintained.

The reason for this is as follows. That is, as shown in the enlarged view of FIG. 7 , the slit fitting groove 72 of the side pressure binding tool 70 is inclined from the inside to the outside upward, so when it is inserted into the connecting ring, it is inserted in the “↙” or “↘” direction. On the other hand, if you want to remove it while it is inserted into the connecting ring 16, you must take it out in the “↗” or “↖” direction. And the horizontal connecting rod 60 coupled to the through hole 74 of the lateral pressure binding sphere 70 is inserted and removed in the vertical direction (↓, ↑).

Here, when the bent portions 62 at both ends of the horizontal connecting rod 60 are fitted into the through holes 74 of the side pressure binding spheres 70, the bent portions 62 at both ends are formed in the unit members (A) (B) (C). Since it is in contact with the bent portion 18, when the side pressure binding tool 70 tries to separate the connecting rings 16 and 36 in the “↗” or “↖” direction, the bent portions 62 at both ends are bent ( 18), and consequently, the separation (movement) of the lateral pressure binding tool 70 is prevented. Therefore, as long as the operator does not pull out the horizontal connecting rod 60 upward, it is associated with the side pressure binding sphere 70 and a strong coupling is maintained.

Referring to FIG. 8, instead of configuring the combination between the unit members (A) (B) (C) described above in configuring the side plate (SP), a plurality of beads (14) on the wall (12) in the vertical direction is arranged vertically, and in each bead 14, a connecting ring 16 bent to form an acute angle with the bead 14 is extended in the side plate (SP, integral side plate) of the side pressure according to an embodiment of the present invention The binding sphere 70 may be applied as it is.

9 is a view showing a side pressure binding tool (70A) according to another embodiment of the present invention, based on the shape of the unit member (C') constituting the side plate (SP) to smoothly bind the horizontal connecting rod (60) make this possible

That is, referring to the drawings, the lateral pressure binding sphere 70A forms a through hole 74 penetrating the body portion 71 vertically through the lateral pressure binding sphere 70 coupled to the left and right side plates SP. ) so that the bent portions 62 at both ends are fitted in the through hole 74 in the downward direction (↓) to resist the lateral pressure of the concrete being poured.

A downward protrusion 76 extending downward is integrally formed on the inner side of the through hole 74 so as to be in close contact with the inner surface of the vertical connecting ring 16a configured in the side plate S.P.

And a horizontal slit fitting groove 72A is formed on the inner wall of the lower protrusion 76 to fit the horizontal protrusion 19 extending inward from the top of the connecting ring 16a in a “→” or “←” direction make it fit

After binding the side pressure binding sphere 70A to the side plate SP, when the bent portions 62 at both ends of the transverse connecting rod 60 are fitted into the through holes 74 of the lateral pressure binding sphere 70A, the bent portions 62 at both ends are When the lateral pressure binding sphere 70A tries to leave the horizontal protrusion 19 in a state of being in contact with the connecting ring 16a, the bent portions 62 at both ends are caught in the connecting ring 16a, and as a result, the lateral pressure binding sphere 70A ) to prevent the movement (departure). Therefore, unless the operator pulls out the horizontal connecting rod 60 to the upper part, the lateral pressure binding sphere 70A and the solid coupling are maintained by union with each other.

Thereby, the binding of the horizontal connecting rod 60 is made immediately with respect to a necessary part between the left and right side plates S.P.

On the other hand, in configuring the side plate (SP), as in the method (integral side plate) shown in Fig. 8, instead of configuring the coupling between the unit members (C'), a plurality of beads ( 14) is arranged vertically, and in each bead 14, a connecting ring 16a and a horizontal protrusion 19 are extended in the integral side plate SP according to another embodiment of the present invention. ) can be applied as it is.

Although the method of using the lateral pressure binding tool 70 for beam formwork has been described above, the lateral pressure binding tool 70 can be used not only in the beam construction formwork 2 but also in walls and columns. That is, as shown in FIG. 10, if the unit member (C) is continuously laminated from the bottom to the top, it can be formed as a formwork for a wall and a column. It can be used as a side pressure binding sphere (70).

Although specific embodiments have been described in the above description of the present invention, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be defined by the claims and equivalents to the claims.

(2)--Formwork for beam construction (8)--Concrete pouring space
(DP)--Lower plate (SP)--Side plate
(A)--Corner plate (B)--Connecting media plate
(C)--Unit extension plate (11)--L-shaped wall
(12)--wall (14)--bead
(16)(16a)--joint ring (18)--bend
(19)--Horizontal protrusion
(40)--U stirrup (40a)--Cross bar body
(40b)--vertical rod body
(50)--Fixing clip (52)--Fixing ring part
(52a)--locking end (54)--connection
(56)--bind part
(60)--Horizontal connecting rod (62)--Bending at both ends
(66)--Bundling reinforcing bar
(70)(70A)--Side pressure binding tool (71)--Body part
(72)(72A)--Slit fitting groove (74)--Through hole
(76)--lower protrusion

Claims (2)

A lateral pressure binding sphere 70 for coupling the horizontal connecting rod 60 to resist the lateral pressure of concrete poured between the left and right side plates (SP) during construction of beams, columns and walls is constituted,
The side pressure binding sphere 70 forms a through hole 74 penetrating the main body part 71 up and down, and between the lateral pressure binding spheres 70 coupled to the left and right side plates SP, both ends of the horizontal connecting rod 60 are bent. (62) is fitted in the downward direction (↓) in the through hole 74 to resist the lateral pressure of the concrete being poured,
On the inside of the through hole 74, a slit fitting groove 72 inclined upward from the lower end of the main body 71 according to the acute angle of the connecting ring 16 configured in the side plate SP is formed to form a connecting ring ( 16), but when it is inserted into the connecting ring (16), insert it in the “↙” or “↘” direction. to fall in the direction
When the bent portions 62 at both ends of the horizontal connecting rod 60 are inserted into the through holes 74 of the side pressure binding spheres 70, the bent portions 62 at both ends contact the bent portions 18 of the side plate SP. When the side pressure binding tool 70 tries to deviate from the connecting ring 16 in the “↗” or “↖” direction in a state of As long as the worker does not pull out the horizontal connecting rod 60 to the upper part by preventing the departure (moving) of the 70, it is associated with the lateral pressure binding tool 70 to maintain a strong coupling. A lateral pressure binding tool of the formwork for beam or column and wall construction, characterized in that it enables the binding of the horizontal connecting rod (60) to be made immediately.
When constructing beams, columns and walls, a lateral pressure binding sphere (70A) for coupling the horizontal connecting rod (60) to resist lateral pressure of concrete poured between the left and right side plates (SP) is constituted,
The lateral pressure binding sphere 70A forms a through hole 74 penetrating the main body 71 vertically, and between the lateral pressure binding spheres 70 coupled to the left and right side plates SP, both ends of the horizontal connecting rod 60 are bent. (62) is fitted in the downward direction (↓) in the through hole 74 to resist the lateral pressure of the concrete being poured,
A lower protrusion 76 is extended downwardly on the inside of the through hole 74, and a horizontal slit fitting groove 72A is formed on the inner wall of the lower protrusion 76 to form a vertical connection formed in the side plate SP. By custom fitting in the “→” or “←” direction to the horizontal protrusion 19 extending inward from the top of the ring 16a,
When the bent portions 62 at both ends of the horizontal connecting rod 60 are fitted into the through holes 74 of the side pressure binding spheres 70A, the bent portions 62 at both ends are in contact with the connecting rings 16a configured in the side plate SP. When the side pressure binding sphere 70A tries to separate the horizontal protrusion 19 in a state of As long as the operator does not withdraw the horizontal connection rod 60 upward by blocking the horizontal connection rod 60, the horizontal connection rod 60 is immediately associated with the necessary part between the left and right side plates SP by cooperating with each other to maintain a solid connection. A lateral pressure binding tool of the formwork for beams, columns, and walls, characterized in that it allows binding to be made.

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