KR102461223B1 - Prefabricated module for composite hollow wall and composite hollow wall using the same - Google Patents

Abstract

The present invention combines vertical angles at both ends of PC panels constituting each PC wall unit in a pair of PC wall units spaced apart so that a hollow is formed therein, so that the weight is light and the joining between members is easy, and construction is easy. It relates to a pre-assembly module for a hollow composite wall with excellent structural performance and a hollow composite wall using the same.
In the present invention, the pre-assembly module for a hollow composite wall is a pre-assembly module for a hollow composite wall in which a hollow is formed inside by coupling a pair of PC wall units to be spaced apart from each other, wherein the PC wall unit is a PC panel and one leg and the other leg is an angle member at right angles to each other, each provided so as to be continuous at both ends of the PC panel in a vertical direction, and one leg is configured as a vertical angle fixed to the outer or inner surface of the end side of the PC panel, the pair of PC wall units is characterized in that a hollow of a closed cross-section is formed inside a pair of PC wall units by bonding and joining the other leg ends of each vertical angle facing each other.

Description

Prefabricated module for composite hollow wall and composite hollow wall using the same}

The present invention combines vertical angles at both ends of PC panels constituting each PC wall unit in a pair of PC wall units spaced apart so that a hollow is formed therein, so that the weight is light and the joining between members is easy, and construction is easy. It relates to a pre-assembly module for a hollow composite wall with excellent structural performance and a hollow composite wall using the same.

In high-rise buildings, a gravity resistance system to support vertical loads is important, but since the effects of lateral loads such as earthquake and wind loads are also large, a lateral force resistance system must be provided to support them.

For this purpose, a double shear wall system is mainly used, and among the wall methods for forming a shear wall, the RC method is used the most.

The RC method is a method of constructing structures by repeating a series of operations such as reinforcement, formwork installation, concrete pouring and curing, and formwork demolding.

At this time, in high-rise buildings, the large-diameter reinforcing bars are densely arranged in the wall because the compressive force, shear force, and bending force acting on the wall are large. However, large-diameter reinforcing bars are difficult to transport and lift, take a long time for joint work, and have poor workability due to difficulties in placing concrete in a closed room. Therefore, when it is necessary to improve the structural performance of the wall, it is necessary to increase the wall thickness.

In addition, the conventional RC method requires a formwork installation and demolding process, and the formwork process accounts for 50% of the frame work, which has the greatest influence on the increase in construction time and labor costs.

In order to solve the above problems of the conventional RC method, the development of the precast concrete method (hereinafter referred to as the PC method) is increasing.

The PC method is a method of constructing a building by transporting pre-fabricated PC members from a factory to the site and assembling them at the site.

In this PC method, the members are manufactured in a factory, so the quality is excellent and uniform. In addition, field work such as formwork installation, demolding, and reinforcing reinforcement can be minimized, and concrete curing time is not required, thereby reducing labor costs and shortening the construction period.

However, the PC member has a large member weight, which increases the transport cost burden, and requires large lifting equipment for field work. In addition, in the PC structure, the performance and durability of the structure are determined according to the performance of the joint between the PC members. If the integrity of the joint is not secured, structural performance such as water leakage, deterioration of durability, and corrosion of reinforcing bars may be deteriorated.

Therefore, in order to improve the wall by the conventional PC method, a PC double wall (PC Double Wall) was developed.

The PC double wall secures integrity with adjacent members by connecting two thin precast walls with hardware to form a hollow between the walls, and pouring concrete into the hollow.

However, in PC double wall, only the inside of the wall is integrated, and the precast wall outside is still separated, so there is a limit in the resistance performance against shear or bending.

In addition, the steel concrete composite wall, in which steel plates are synthesized inside or outside reinforced concrete, is an effective structural system in which the RC part resists compressive force and at the same time prevents local buckling of the steel plate, and the steel plate resists bending moment, axial force, and shear force.

However, steel concrete composite walls require a lot of shear connectors for the composite action of steel plates and concrete, and reinforcement of boundary elements such as concrete-filled steel pipe columns or pure steel frame columns is required at the wall boundary. In addition, since the entire wall is reinforced with a steel plate, there are many joint joints, so the welding load is large, and careful design of the reinforcement is required for the joint and fixation of the internal and external horizontal reinforcement.

On the other hand, a steel plate shear wall is a lateral force resistance system in which a steel plate wall is installed between a column and a beam, and has the advantage of being lightweight and having excellent shear strength based on excellent material performance.

However, since a thin steel plate wall is used, it is vulnerable to compression resistance such as buckling. Therefore, in order to compensate for this, the frame must be composed of a composite system that can resist gravity load and dissipate energy when deformation occurs by using a steel sheet filled between the frames. As such, there is a limit to constructing a steel plate shear wall as an independent system, and since the steel plate is exposed to the outside, a separate fireproof construction is required. increase, and the workability decreases.

US 10-2020-0065983 A

In order to solve the above problems, the present invention is to provide a pre-assembly module for a hollow composite wall that is light in weight, easy to join between members, has excellent workability, and has excellent structural performance, and a hollow composite wall using the same.

The present invention according to a preferred embodiment is a pre-assembly module for a hollow composite wall in which a hollow is formed therein by combining a pair of PC wall units to be spaced apart from each other, wherein the PC wall unit includes a PC panel and one leg and the other leg As an angle member forming a right angle, it is provided so as to be continuous in a vertical direction at both ends of the PC panel, and one leg is configured as a vertical angle fixed to the outer or inner surface of the end side of the PC panel, the pair of PC wall units are connected to each other It provides a pre-assembly module for a hollow composite wall, characterized in that a hollow of a closed cross-section is formed inside a pair of PC wall units by bonding and bonding the other leg ends of each vertical angle facing each other.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that a wire mesh is provided inside the PC panel.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that the vertical angle is provided to surround the outside end of the PC panel.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that the stud bolts protruding into the hollow through the PC panel are coupled inside one leg of the vertical angle.

The present invention according to another preferred embodiment is for a hollow composite wall, characterized in that the PC panel is formed in an inwardly bent L-shape, and the vertical angle is fixed to the inner surface of the curved L-shaped corner of the PC panel. Provides pre-assembled modules.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that the stud bolts fixed in the PC panel are coupled to the surface in contact with the PC panel of the vertical angle.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that the inner surface of the PC panel is provided with a transverse reinforcing member, both ends of which are respectively coupled to one leg of both sides of the vertical angle.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that a pocket portion is formed to expose the vertical angle on one side of the PC panel.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that it further includes a tie bar that penetrates the facing PC panel to maintain the interval between the PC panel.

The present invention according to another preferred embodiment provides a pre-assembly module for a hollow composite wall, characterized in that the PC panel is vertically separated so that the upper PC panel and the lower PC panel are spaced apart from each other.

The present invention according to another preferred embodiment is a pre-assembly module for the hollow composite wall; and deep concrete formed by pouring concrete on-site between the PC panels of the pre-assembly module for the hollow composite wall; It provides a hollow composite wall, characterized in that consisting of.

According to the present invention, a hollow is formed inside a pair of PC wall units spaced apart from each other, and vertical angles are coupled to both ends of PC panels constituting each PC wall unit. A wall can be provided.

Accordingly, the vertical angle reinforces the PC panel to increase the rigidity of the PC wall unit, thereby minimizing the thickness of the PC panel. Therefore, it is possible to reduce the weight of the member by the hollow between the PC wall units and the vertical angle, thereby improving the workability and economic efficiency.

In addition, the vertical angle acting as the main pillar is integrated with the PC panel and the on-site concrete poured into the hollow to form the SRC composite wall, so the structural performance is excellent.

In addition, since adjacent vertical angles can be joined by bolting or welding to face PC wall units or adjacent pre-assembly modules, joining between members is easy and construction is convenient.

1 is a perspective view showing an embodiment of a PC wall unit;
Figure 2 is a perspective view showing a pre-assembly module for the present invention hollow composite wall by the PC wall unit of Figure 1.
Figure 3 is a cross-sectional view showing a line assembly module for the present invention hollow composite wall according to Figure 2;
Fig. 4 is a perspective view showing another embodiment of a PC wall unit;
Figure 5 is a perspective view showing a pre-assembly module for the present invention hollow composite wall by the PC wall unit of Figure 4.
Figure 6 is a cross-sectional view showing a line assembly module for the present invention hollow composite wall according to Figure 5.
7 is a perspective view showing a line assembly module coupled in the transverse direction.
Fig. 8 is a perspective view showing the coupling relationship of vertical angles in the pocket portion;
Fig. 9 is a cross-sectional view showing a facing PC panel secured by tie bars;
Figure 10 is a perspective view showing a pre-assembly module composed of two-layer one section.
11 is a perspective view showing a state in which the slab reinforcing bars in FIG.
Figure 12 is a perspective view showing a state in which the slab concrete is poured in Figure 11;
13 is a cross-sectional view showing an embodiment of the corner part of the hollow composite wall of the present invention.
Figure 14 is a cross-sectional view showing another embodiment of the corner portion of the present invention hollow composite wall.

Hereinafter, the present invention will be described in detail according to the accompanying drawings and preferred embodiments.

Figure 1 is a perspective view showing an embodiment of a PC wall unit, Figure 2 is a perspective view showing a pre-assembly module for the present invention hollow composite wall by the PC wall unit of Figure 1.

As shown in Figs. 1, 2, etc., the present invention a hollow composite wall pre-assembly module for a hollow composite wall by combining a pair of PC wall units (2a, 2b) to be spaced apart from each other to form a hollow 20 inside the hollow composite wall In the pre-assembly module 2 for use, the PC wall units 2a and 2b are an angle member in which the PC panel 21 and one leg 221 and the other leg 222 are at right angles to each other. It is provided so as to be continuous in the vertical direction at both ends of the one side leg is composed of a vertical angle 22 fixed to the end side outer surface or inner surface of the PC panel 21, the pair of PC wall units (2a, 2b) is characterized in that the end of the other leg 222 of each vertical angle 22 facing each other is coupled to each other and joined to form a hollow of a closed cross-section inside the pair of PC wall units (2a, 2b).

An object of the present invention is to provide a pre-assembly module for a hollow composite wall that is light in weight, easy to join between members, has excellent workability, and has excellent structural performance, and a hollow composite wall using the same.

The present invention is to improve the structural performance, constructability and economic feasibility of a conventional precast concrete wall and a steel-concrete composite wall.

The present invention is a hollow composite wall pre-assembly module for a pair of PC wall units (2a, 2b) to be spaced apart to face each other, the hollow 20 is formed therein.

The PC wall units 2a and 2b are structural members that not only serve as a formwork for concrete poured into the inner hollow 20 but also support a load by themselves.

The PC wall units 2a and 2b are composed of a PC panel 21 and a vertical angle 22 respectively coupled to both ends of the PC panel 21 so as to be continuous in the vertical direction.

The vertical angle 22 is an angle member in which one leg 221 and the other leg 222 are at right angles to each other, and the one leg 221 is fixed to the outer or inner surface of the end side of the PC panel 21 . The pair of PC wall units (2a, 2b) has a closed end inside the pair of PC wall units (2a, 2b) by joining the other leg (222) of the other side leg (222) of each vertical angle (22) facing each other by being joined to each other. A hollow surface is formed.

The vertical angle 22 is attached to both ends of the PC panel 21 to reinforce the PC panel 21, thereby increasing the self-rigidity of the PC wall units 2a and 2b. Accordingly, the thickness of the PC panel 21 can be minimized.

In addition, the vertical angle 22 serves as a main pillar. That is, the vertical angle 22 forms an SRC wall through integration with the PC panel 21 and the on-site concrete poured into the hollow 20 .

In addition, the vertical angle 22 can be used to interconnect facing PC wall units 2a, 2b or neighboring pre-assembly modules 2 . The members may be coupled to each other by joining the vertical angles 22 of the adjacent members by bolting or welding.

Since the pair of PC wall units 2a and 2b are spaced apart from each other, vertical angles 22 are provided at each of the four corners of the pre-assembly module 2 .

In the present invention, after pre-combining a pair of PC wall units (2a, 2b) to form the pre-assembly module (2), the pre-assembly module (2) itself can be erected and installed in the field. Alternatively, the PC wall units 2a, 2b on one side may be first erected in the field, and then the PC wall units 2a, 2b on the other side may be erected to bond the PC wall units 2a, 2b to each other.

3 is a cross-sectional view showing a line assembly module for the present invention hollow composite wall according to FIG.

As shown in FIG. 3 , a wire mesh 211 may be provided inside the PC panel 21 .

The pre-assembly module 2 resists axial force and bending by the vertical angle 22 of the end of the PC wall unit (2a, 2b) without a separate vertical reinforcing bar inside.

Accordingly, when the composite wall is constructed using the pre-assembly module 2, the shear strength of the wall may be insufficient. Therefore, in order to compensate for this, a wire mesh 211 may be provided inside the PC panel 21 .

1 to 3 , the vertical angle 22 may be provided to surround the outside of the end of the PC panel 21 .

That is, the vertical angle 22 may be arranged outside the end of the PC panel 21 so that the vertical angle 22 is exposed to the outside of the PC wall units 2a and 2b.

When the vertical angle 22 is exposed to the outside, the bonding operation is easy when the facing PC wall units 2a and 2b are mutually coupled or bonded to the neighboring pre-assembly module 2 . The vertical angles 22 exposed to the outside can be coupled to each other by welding or bolting.

In addition, since the vertical angle 22 is located on the outermost side, it is possible to maximize the cross-sectional performance.

As shown in FIG. 3 , a stud bolt 23 protruding into the hollow 20 through the PC panel 21 may be coupled to the inside of the one leg 221 of the vertical angle 22 .

In order to integrally fix the vertical angle 22 with the PC panel 21 , a stud bolt 23 may be coupled to the inside of one leg 221 of the vertical angle 22 .

Since the stud bolt 23 penetrates the PC panel 21 and protrudes into the hollow 20, the PC panel 21 and the deep concrete 3 poured therein are integrated.

Figure 4 is a perspective view showing another embodiment of the PC wall unit, Figure 5 is a perspective view showing the present invention hollow composite wall pre-assembly module by the PC wall unit of Figure 4, Figure 6 is the view by Figure 5 It is a cross-sectional view showing a pre-assembly module for the invention hollow composite wall.

As shown in FIGS. 4 to 6 , the PC panel 21 is formed in a L-shape with an end bent inward, and the vertical angle 22 is an inner surface of a corner portion of the PC panel 21 bent in an L shape. can be fixed to

When the vertical angle 22 is exposed to the outside, a separate fireproof coating is required.

Therefore, by fixing the vertical angle 22 to the inner surface of the corner portion where the end of the PC panel 21 is bent as shown in FIGS. 4 to 6, the vertical angle 22 is not exposed to the outside of the wall. configurable.

In this case, since the inside and outside of the vertical angle 22 are constrained by the deep concrete 3 and the PC panel 21, respectively, a separate fireproof coating is not required, and the buckling of the vertical angle 22 can be prevented with respect to the compressive force. .

As shown in FIG. 6 , a stud bolt 23 fixed in the PC panel 21 may be coupled to the surface of the vertical angle 22 in contact with the PC panel 21 .

A stud bolt 23 may be coupled to the surface of the vertical angle 22 in contact with the PC panel 21 , that is, the outer surface thereof to integrally fix the PC panel 21 and the vertical angle 22 .

In addition, in order to integrate the PC wall units 2a and 2b and the deep concrete 3, the other side in contact with the PC panel 21 of the vertical angle 22, that is, the stud bolt 23 may be provided on the inner side. .

As shown in FIG. 4 , a transverse reinforcing member 24 may be provided on the inner surface of the PC panel 21 .

In order to increase the shearing performance of the wall, a transverse reinforcing member 24 disposed in the transverse direction may be provided on the inner surface of the PC panel 21 .

The transverse reinforcing member 24 serves as a horizontal reinforcing bar of the wall.

The transverse reinforcing member 24 may use a steel strip, and the end may be fixed to the vertical angle 22 provided inside the end of the PC panel 21 .

The transverse reinforcement member 24 can be fixed to the vertical angle 22 by bolting or welding.

A stud bolt 23 may be provided on the inner surface of the transverse reinforcement member 24 for integration with the deep concrete 3 .

The stud bolt 23 can be easily installed since it can be coupled to the transverse reinforcement member 24 in advance.

7 is a perspective view showing a line assembly module coupled in the transverse direction, Figure 8 is a perspective view showing the coupling relationship of the vertical angle in the pocket portion.

7 and 8 , a pocket portion 212 may be formed on one side of the PC panel 21 to expose the vertical angle 22 .

When the vertical angle 22 is provided inside the corner portion bent in the letter of the PC panel 21, the facing PC wall units (2a, 2b) and the neighboring pre-assembly modules (2, 2') are mutually coupled difficult to do

Accordingly, a portion of the vertical angle 22 may be exposed to the outside by cutting out a portion of the PC panels 21 and 21 ′ to form the pocket portion 212 .

The pocket portion 212 may be formed in the corner portion of the PC panel (21, 21').

The vertical angles 22 and 22' can be integrated through the pocket portion 212 by combining adjacent vertical angles 22 and 22' by bolting or welding (W).

After the wall construction is completed, the inside of the pocket portion 212 is filled with non-shrinkable mortar or the like.

Fig. 9 is a cross-sectional view showing the facing PC panel fixed by tie bars;

As shown in FIG. 9 , a tie bar 25 penetrating the facing PC panel 21 to maintain a gap between the PC panel 21 may be further provided.

In the present invention, the thickness of the PC panel 21 can be minimized by combining the vertical angles 22 on both sides of the PC panel 21 . However, in this case, there is a risk of deformation of the PC panel 21 due to lateral pressure when the deep concrete 3 is poured.

Therefore, by installing the tie bars 25 so as to penetrate the PC panel 21 facing each other and fixing the PC panels 21 on both sides to each other, deformation of the PC panel 21 due to the lateral pressure of the concrete is prevented.

The tie bar 25 is embedded in the deep concrete 3 and also serves to integrate the deep concrete 3 and the PC panel 21 .

10 is a perspective view showing a pre-assembly module composed of a two-story section 1, FIG. 11 is a perspective view showing a state in which slab reinforcement is reinforced in FIG. 10, and FIG. 12 is a state in which slab concrete is poured in FIG. is a perspective view.

As shown in FIG. 10 , the PC panel 21 may be vertically separated so that the upper PC panel 21 and the lower PC panel 21 are spaced apart from each other.

In the present invention, the weight of the pre-assembly module 2 can be minimized by thinning the PC panel 21 . This reduces the lifting load, so it is easy to configure the pre-assembly module 2 as a multi-layer one section.

Therefore, by attaching the upper and lower PC panels 21 to one continuous vertical angle 22, and configuring the upper and lower PC panels 21 to be spaced apart from each other at the slab 4 position, it is possible to increase the size of the member, in this case The construction period can be significantly shortened.

11, the space between the PC panels 21 separated vertically may be installed by penetrating the slab reinforcing bars 41.

And, as shown in Figure 12, after the reinforcement of the slab reinforcement 41, the slab 4 concrete can be poured and integrated.

13 is a cross-sectional view showing an embodiment of the corner portion of the present invention hollow composite wall, Figure 14 is a cross-sectional view showing another embodiment of the corner portion of the present invention hollow composite wall.

As shown in Figures 3, 6, etc., the present invention hollow composite wall assembly module (2) for the hollow composite wall; and deep concrete (3) formed by pouring concrete on-site between the PC panels (21) of the pre-assembly module (2) for the hollow composite wall; It is characterized in that it is composed of

Each configuration and role of the pre-assembly module 2 for the hollow composite wall is the same as described in the pre-assembly module 2 for the hollow composite wall of the present invention described above with reference to FIGS. 1 to 12 .

The deep concrete 3 is formed by pouring concrete on-site between a pair of PC panels 21 facing each other of the pre-assembly module 2 for a hollow composite wall.

The pre-assembly module 2 and the deep concrete 3 to be cast on site are integrated to form an SRC composite wall.

13 and 14, the pre-assembly module (2, 2') is formed at the orthogonal corner portion by combining the external vertical angle 26 and the corner vertical angle 27 separately to the outside, and , can be finished by pouring deep concrete (3) inside.

1: Composite wall
2: pre-assembled module
2a, 2b: PC wall unit
20: hollow
21: PC panel
211: wire mesh
212: pocket portion
22: vertical angle
23: stud bolt
24: transverse reinforcement member
25: tie bar
26: external vertical angle
27: Corner vertical angle
3: Deep Concrete
4: slab
41: slab reinforcement
W: Weld

Claims (11)

In the pre-assembly module (2) for a hollow composite wall in which a hollow 20 is formed therein by combining a pair of PC wall units (2a, 2b) to be spaced apart from each other,
Each of the PC wall units 2a and 2b is an angle member in which the PC panel 21 and one leg 221 and the other leg 222 are perpendicular to each other so as to be continuous at both ends of the PC panel 21 in the vertical direction. It is provided and consists of a vertical angle 22 in which one leg 221 is fixed to the outer or inner surface of the end side of the PC panel 21,
The pair of PC wall units (2a, 2b) has a closed cross-section inside the pair of PC wall units (2a, 2b) by bonding and bonding the ends of the other leg (222) of each vertical angle (22) facing each other A pre-assembly module for a hollow composite wall, characterized in that the hollow is formed.
In claim 1,
A wire assembly module for a hollow composite wall, characterized in that a wire mesh (211) is provided inside the PC panel (21).
In claim 1,
The vertical angle (22) is a pre-assembly module for a hollow composite wall, characterized in that provided so as to surround the outside end of the PC panel (21).
In claim 3,
A pre-assembly module for a hollow composite wall, characterized in that the stud bolts 23 protruding into the hollow 20 through the PC panel 21 are coupled inside one leg 221 of the vertical angle 22.
In claim 1,
The PC panel 21 is formed in a L-shaped end bent inward, and the vertical angle 22 is for a hollow composite wall, characterized in that it is fixed to the inner surface of the corner portion bent in the L-shape of the PC panel 21 pre-assembled module.
In claim 5,
A pre-assembly module for a hollow composite wall, characterized in that a stud bolt (23) fixed in the PC panel (21) is coupled to the surface of the vertical angle (22) in contact with the PC panel (21).
In claim 5,
A line assembly module for a hollow composite wall, characterized in that both ends are provided on the inner surface of the PC panel 21, each of which is provided with a transverse reinforcing member 24 coupled to one leg 221 of both sides of the vertical angle 22.
In claim 5,
A pre-assembly module for a hollow composite wall, characterized in that a pocket portion 212 is formed on one side of the PC panel 21 so that the vertical angle 22 is exposed.
In claim 1,
A pre-assembly module for a hollow composite wall, characterized in that it further comprises a tie bar (25) penetrating the facing PC panel (21) to maintain the interval between the PC panel (21).
In claim 1,
The PC panel 21 is vertically separated, and the upper PC panel 21 and the lower PC panel 21 are configured to be spaced apart from each other.
A pre-assembly module (2) for a hollow composite wall according to any one of claims 1 to 10; and
Deep concrete (3) formed by pouring concrete on-site between the PC panels (21) of the pre-assembly module (2) for the hollow composite wall; Hollow composite wall, characterized in that consisting of.

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