KR20230011660A - Sdr apparatus for staggered lapping in slurry wall and wire structure for slurry wall using the same - Google Patents

Abstract

The present invention relates to a protector structure for lap splice in reinforcing bars in an underground continuous wall. The protector structure according to the present invention is inserted into an excavation part excavated downward to build an underground continuous wall in which concrete panels of a reinforced-concrete structure are placed continuously to form the outer wall of a basement floor of a building and comprises: a blocking box that is formed long in the vertical direction and has a space inside; a slit part that is cut along the vertical direction on the front of the blocking box so that multiple transverse reinforcing bars can be inserted into the inner space of the blocking box; and a plurality of needle-shaped blocking pins that are densely installed to block the slit part and can be elastically bent to prevent concrete from flowing into the blocking box through the slit part. Accordingly, the structural strength of the wall can be improved.

Description

SDR device for underground continuous wall reinforcing bar overlapping and underground continuous wall reinforcing bar network structure using the same

[0001] The present invention relates to construction technology, and more particularly to a steel structure used in the construction of a continuous wall permanently used as an exterior wall under a building.

The underground continuous wall refers to a wall to be permanently used as an outer wall of the basement when a building structure is completed, rather than a temporary facility that is temporarily installed for earth protection or water blocking during the foundation work of the lower part of a building and then removed.

1 and 2 show the structure of a conventional underground continuous wall.

1 is a schematic plan view of an area where an underground continuous wall is to be installed viewed from above. Here, the part marked with A is the preceding panel part, and the part marked with B is the following panel part. When constructing an underground continuous wall, first, along the area where the underground outer wall of the building is to be installed, the preceding panel part and the following panel part are divided so that they are alternately arranged.

Then, excavation proceeds downward with respect to the preceding panel portions A1, A2, and A3. More specifically, a guide wall (not shown) is installed on the ground surface, and the preceding panel part is excavated to a predetermined depth using an excavator. In this process, in order to prevent the hole wall formed by the excavation from collapsing, a stabilizing liquid (usually a bentonite liquid) for maintaining the hole wall is injected to fill the excavation part.

When the excavation of the preceding panel part is completed, the reinforcing bar network in which the transverse reinforcing bars (1) and longitudinal reinforcing bars (2) are interconnected is inserted into the excavation part in a state in which the stabilizing liquid is filled, and Concrete is poured into the excavation. Since the concrete is heavier than the stabilizing liquid, the stabilizing liquid is pushed up and pumped to be reused. When the filled concrete hardens, a wall is formed. Excavation of all the preceding panel parts A1, A2, and A3 may be performed simultaneously or sequentially.

When the construction of the preceding panel portion is completed, excavation and wall forming work are performed for the following panel portions B1, B2, and B3 between the preceding panel portions. The process is the same as the construction of the preceding panel part. When the construction of the preceding panel part and the following panel part is completed, the continuous wall is completed in the form shown in FIG. 2 .

Such a conventional continuous wall has a structural strength problem. As described above, since the underground continuous wall is formed after the preceding panel portion is formed, the transverse reinforcement 1 of the preceding panel portion and the following panel portion are not interconnected as shown in FIG. 2 . Reinforcing bars must be connected throughout the entire continuous wall so that the reinforced-concrete structure is integrated, which is advantageous in strength. In particular, in conditions where seismic design is strengthened as in recent years, the connection of reinforcing bars between panels is emerging as an important issue.

In order to solve this problem, a method in which the reinforcing bars of the preceding panel portion and the reinforcing bars of the following panel portion overlap each other, that is, an overlapping method, has been studied, as shown in the portion indicated by D in FIG. Among the reinforcing bar networks of the preceding panel portion (A), concrete is first poured and hardened only in the central portion, excluding both end portions. And after excavating the trailing panel part, concrete is poured in a state where the end of the lagging reinforcing bar network overlaps the end of the preceding reinforcing bar network as shown in D. If the following panel part is excavated in a state where concrete is not poured at both ends of the preceding panel part, and the concrete is poured into the following panel part in a state where the reinforcing bars of the following panel part and the reinforcing bars of the preceding panel overlap each other, the form shown in FIG. 3 is obtained. Concrete is placed in a state where the ends of the preceding reinforcing bar network overlap with the ends of the lagging reinforcing bar network, and the reinforcing bars of the preceding panel part and the following panel part are mutually integrated by the concrete, so the strength of the wall is reinforced. However, there is a problem that it is technically very difficult to actually implement the above construction method. When concrete is poured into the preceding panel portion, separate blocking plates must be inserted to prevent concrete from being poured at both ends, but it is practically very difficult. For reference, reference numeral g indicates the boundary between the excavation part of the preceding panel part and the following panel part.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a protector structure (SDR device) for allowing the reinforcing bars of the preceding panel and the succeeding panel to be overlapped in an underground continuous wall.

Another object of the present invention is to provide a reinforcing bar network structure including the protector structure.

Meanwhile, other unspecified objects of the present invention will be additionally considered within the scope that can be easily inferred from the following detailed description and effects thereof.

The protector structure according to the present invention for achieving the above object is inserted into the excavation part excavated downward to build a continuous underground wall in which concrete panels of a reinforced-concrete structure are continuously arranged to form an outer wall of a basement floor of a building. , A blocking box formed long in the vertical direction and having a space portion formed therein; a slit part lengthwise cut along the vertical direction on the front surface of the blocking box so that a plurality of transverse reinforcing bars can be inserted into the inner space of the blocking box; It is characterized by having a plurality of needle-shaped blocking pins densely installed to block the slit portion and elastically bendable so as to prevent concrete from flowing into the enclosure through the slit portion.

According to the present invention, the blocking pin includes a first blocking pin coupled to one side of the slit portion and extending to the other side, and a second blocking pin coupled to the other side of the slit portion and extending to one side. and the second blocking pin are disposed to overlap each other to double block the slit portion.

In one example of the present invention, to prevent concrete from adhering to the blocking pin,

It is formed long in the vertical direction, disposed on the front surface of the blocking pin, and further includes a cover having cut lines formed at regular intervals along the vertical direction. In particular, the cover includes a first cover coupled to one side of the slit unit and extending to the other side, and a second cover coupled to the other side of the slit unit and extending to one side, so that the first cover and the second cover overlap each other. It is preferable to be disposed so as to prevent contact between the blocking pin and the concrete.

In one example of the present invention, the blocking box is formed by arranging two enclosures in which a space portion is formed therein, the slit portion is formed side by side, and mutually contacting surfaces are coupled, and is formed long in the vertical direction to It is coupled between the two enclosures and further includes a water stop protruding from the front of the blocking box.

In one example of the present invention, installed inside the blocking box to isolate a first region into which a plurality of reinforcing bars are introduced through the slit in the inner space of the blocking box and a second region remaining in the space. It is preferable to further provide a partition wall member.

In one example of the present invention, it is detachably coupled to the upper part of the blocking box, and is coupled to the longitudinal bars of the reinforcing bar network inserted into the concrete panel to mutually bind the blocking box and the reinforcing bar network inserted into the concrete panel. It is desirable to have more units. More specifically, the fixing unit includes a frame detachably coupled to the blocking box, and binding reinforcing bars coupled to the frame and having both ends coupled to longitudinal bars of the reinforcing bar network inserted into the concrete panel.

An underground continuous wall reinforcing bar network structure for achieving another object of the present invention includes a reinforcing bar network in which transverse reinforcing bars and longitudinal reinforcing bars are interconnected; And as being installed on both sides of the reinforcing bar network, respectively, A pair of protector structures of the above structure; It is characterized by having a.

According to the present invention, it is preferable to further include a fixing band that wraps and binds the lower part of the reinforcing bar network and the lower part of the pair of protector structures together.

The use of the method using the protector structure according to the present invention has the advantage of improving the structural strength of the wall because the reinforcing bars of the preceding panel and the succeeding panel can be substantially joined while constructing the underground continuous wall very simply.

On the other hand, even if the effects are not explicitly mentioned here, it is added that the effects described in the following specification expected by the technical features of the present invention and their provisional effects are treated as described in the specification of the present invention.

1 and 2 are drawings for explaining a conventional underground continuous wall, FIG. 1 is a schematic plan view for explaining a preceding panel part and a following panel part for constructing a continuous wall, and FIG. 2 is a schematic plan view for preceding and following panel parts This is a schematic cross-sectional view after reinforcing bars are inserted and concrete is poured.
3 is a schematic cross-sectional view expressing a state in which reinforcing bars are mutually overlapped in a conventional underground continuous wall.
4 is a schematic perspective view of a protector structure for overlapping underground continuous wall reinforcing bars according to an example of the present invention.
FIG. 5 is a cross-sectional view for explaining the slit portion and the blocking pin of the protector structure shown in FIG. 4, in a state before the first blocking pin unit and the second blocking pin unit are coupled.
FIG. 6 is a schematic cross-sectional view along line AA of FIG. 4 , showing a state in which the first blocking pin unit, the second blocking pin unit, and the cover are coupled in the state of FIG. 5 .
7 illustrates another modified example of a first blocking pin, a second blocking pin, and a cover.
8 shows another example in which a partition wall member is installed inside the blocking box.
9 is a schematic perspective view of a reinforcing bar network structure according to an example of the present invention.
10 is a partial perspective view for explaining a fixing unit of a reinforcing bar network structure.
11 is a schematic cross-sectional view of the preceding panel.
12 is a cross-sectional view of a state in which the trailing panel part is excavated and the protector structure is separated in the state of FIG. 11;
13 is a state in which the lagging reinforcing bar network is inserted in the state of FIG. 12.
14 shows a state in which the trailing panel is completed by pouring concrete in the state of FIG. 13 .
※ It is revealed that the accompanying drawings are illustrated as references for understanding the technical idea of the present invention, and thereby the scope of the present invention is not limited.

In describing the present invention, a detailed description thereof will be omitted if it is determined that a related known function may unnecessarily obscure the subject matter of the present invention as it is obvious to those skilled in the art.

Hereinafter, with reference to the accompanying drawings, a protector structure (hereinafter referred to as 'protector structure') and a reinforcing bar network structure for overlapping reinforcing bars in an underground continuous wall according to an example of the present invention will be described in detail.

4 is a schematic perspective view of a protector structure for overlapping reinforcing bars in an underground continuous wall according to an example of the present invention, and FIG. 5 is a cross-sectional view illustrating a slit portion and a blocking pin of the protector structure shown in FIG. A state before the pin unit and the second blocking pin unit are coupled, and FIG. 6 is a schematic cross-sectional view along the line A-A of FIG. 4, showing a state in which the first blocking pin unit, the second blocking pin unit, and the cover are coupled in the state of FIG. . 9 is a schematic perspective view of a reinforcing bar network structure according to an example of the present invention.

Referring to the drawings, the protector structure 50 according to an example of the present invention is inserted into an excavation part excavated downward to construct an underground continuous wall, and includes a blocking box 10, a slit part 20, a blocking pin ( 31,32).

The blocking box 10 is formed long in the vertical direction, and a space 11 is formed therein. In this example, the blocking box 10 is manufactured by mutually coupling two enclosures 12 and 13 each having a space formed therein in a hexahedral shape. That is, the two enclosures 12 and 13 are arranged side by side and a bolt b and a nut (not shown) are fastened to the surfaces in contact with each other.

Between the two enclosures 12 and 13, a water stop plate 14 is inserted and coupled. The water stop plate 14 is to prevent groundwater from flowing into the building side through a gap between the preceding panel and the following panel after the underground continuous wall is constructed. The water stop plate 14 is formed to be long in the vertical direction and is disposed to protrude from the front surface of the blocking box 10.

The slit portion 20 is formed by cutting both sides of the front surface of the blocking box 10, and is disposed elongated along the vertical direction. The width of the slit portion 20 is formed to the extent that two reinforcing bars can overlap each other, for example, about 4 cm. A plurality of transverse reinforcing bars spaced apart in the vertical direction, for example, the transverse reinforcing bars 61 of the preceding panel reinforcing bar network are inserted into the space portion 11 inside the blocking box 10 through the slit portion 20, respectively. The slit part 20 has a function to allow the transverse reinforcing bars to be inserted into the blocking box, and to prevent the transverse reinforcing bars inserted into the blocking box from interfering when the blocking box is removed and taken out after the concrete is cured. have This will be explained again later.

The blocking pins 31 and 32 are for preventing concrete poured into the excavation from flowing into the space 11 inside the blocking box 10 through the slit 20 . The blocking pin is thinly formed in a needle shape and installed in the slit portion 20, and a plurality of blocking pins are densely and densely arranged to block the slit portion 20. The needle blocking pins 31 and 32 are made of iron, plastic, synthetic resin, or hair material and can be bent elastically.

In this example, the blocking pin includes a first blocking pin 31 and a second blocking pin 32 . On one side of the slit part 20 of the blocking box 10, a first connector 33 is inserted and coupled, and one end of the plurality of first blocking pins 31 is fixed to the first connector 33, and the other end has a slit. It extends toward the other side of the portion 20. Similarly, the connecting body 34 is inserted and coupled to the other side of the slit portion 20 of the blocking box 10, and is fixed to the second connecting body 34 of the plurality of second blocking pins 32, and the slit portion 20 extended towards one side. As shown in FIG. 6 , the first blocking pin 31 and the second blocking pin 32 are overlapped with each other in a double arrangement at the center of the slit 20 to effectively prevent the inflow of concrete. However, if the blocking pins are very densely arranged, it may be difficult to completely overlap the first blocking pin and the second blocking pin. In this case, as in the other example of FIG. 7 , the first blocking pin 31 is disposed behind the slit 20, and the second blocking pin 32 is located in front of the first blocking pin 31. In such a way, the first blocking pin and the second blocking pin may be double overlapped or alternately disposed.

As described above, by installing a plurality of blocking pins 31 and 32 in the slit portion 20, it is possible to prevent concrete from flowing into the inner space 11 of the blocking box 10. However, when the concrete is hardened while being attached to the blocking pin 31, it becomes difficult to take the protector structure out again. Accordingly, in this example, a flat sheet-shaped cover 40 is installed on the surface where the blocking pins 31 and 32 and the concrete meet. The cover 40 is installed on the blocking box 10 so as to completely cover the front surfaces of the blocking pins 31 and 32. The cover 40 uses a material that does not adhere well to concrete, for example, a vinyl sheet in this embodiment. In addition, incision lines 41 are formed in the cover 40 at regular intervals along the height direction. Transverse reinforcement 61 may be inserted through the incision 41 . In addition, since there is an incision line, it is possible to minimize a portion where the cover 40 is lifted by the reinforcing bars. As shown in FIGS. 5 and 6, the cover 40 may use a single sheet, but as shown in FIG. It can also be placed on both sides of the . Contact between the blocking pins 31 and 32 and the concrete can be more effectively prevented by overlaying the two covers 45 and 46 together.

Meanwhile, in this example, a barrier member 16 may be provided.

8 shows an embodiment in which a partition wall member is installed.

Referring to FIG. 8, the bulkhead member 16 has a first area 18 in which transverse and longitudinal bars of a concrete panel (ex: preceding panel) are disposed in the space inside the blocking box 10, and the second area of the remaining This is to separate the regions 17 from each other. As mentioned above, since the space inside the blocking box 10 is where one end of the transverse reinforcing bars and longitudinal reinforcing bars of the following panel are placed, concrete flows into the space where the reinforcing bars of the following panel are placed during the concrete placement of the preceding panel. It should not harden. In order to prevent the inflow of concrete into the blocking box, in this example, a blocking pin is installed in the slit part. However, in this example, a configuration is provided so that there is no problem with the installation of the trailing panel even when the concrete penetrates through the blocking pin. That is, even if concrete penetrates into the blocking box, if it flows only into the area where the reinforcing bars of the preceding panel are arranged, the reinforcing bars of the following panel can be arranged so as to overlap with the reinforcing bars of the preceding panel to construct the following panel. Therefore, by using the bulkhead member 16, the space 11 inside the blocking box 10 is formed in the first area 18 where the transverse and longitudinal bars of the preceding panel are disposed, and the reinforcing bar network of the remaining succeeding panel is disposed. They are isolated from each other by the second region 17. In this example, the partition wall member 16 has a cross section of a 'c' shape and is arranged long in the vertical direction. One open end communicates with the slit portion 20 . When the bulkhead member is installed by attaching it to one side of the blocking box in a 'b' shape other than the 'c' shape, it is actually the same as the 'c' shape. The shape of the partition member may vary, and it is important that the first region and the second region are isolated from each other in the space inside the blocking box by the partition member.

The reinforcing bar network of the preceding panel is installed only in the first area 18 inside the partition wall member 16 . As will be described later, even if the concrete invades the first area, there is no problem with the construction of the later panel, and no problem occurs in carrying the protector structure 50 outside after the construction of the preceding panel.

The underground continuous wall reinforcing bar network structure according to the present invention is a structure in which the reinforcing bar network is installed in the protector structure 50 having the above configuration.

9 is a schematic perspective view of a reinforcing bar network structure according to an example of the present invention, and FIG. 10 is a partial perspective view for explaining a fixing unit of the reinforcing bar network structure.

Referring to the drawings, the underground continuous wall reinforcing bar network structure 100 according to the present invention includes a protector structure 50 and a reinforcing bar network 60.

In the reinforcing bar network 60, a plurality of transverse reinforcing bars 61 disposed apart from each other in the vertical direction and a plurality of longitudinal reinforcing bars 62 disposed apart from each other in the transverse direction are interconnected in a lattice form. The end of the reinforcing bar network 60 is disposed in the space portion inside the blocking box 10. That is, the transverse reinforcement 61 penetrates the cover 40, the blocking pins 31 and 32, and the slit 20 and is inserted into the space 11 inside the blocking box 10. In addition, the reinforcing bars disposed at one end in the transverse direction among the plurality of longitudinal reinforcing bars may also be disposed in the space portion 11 inside the blocking box. However, since arranging the transverse and longitudinal bars inside the blocking box is for overlapping reinforcing bars between the preceding panel and the following panel, depending on the size of the blocking box, the longitudinal bars 62 may not be installed in the blocking box. In particular, in the example in which the partition wall member 16 is installed as shown in FIG. 8 , the reinforcing bar network 60 is disposed in the first region 18 inside the partition wall member 16 .

The fixing unit is a component of the protector structure, but is described here for convenience.

The fixing unit is for binding the reinforcing bar network 60 so as not to be separated from the blocking box 10. When assembling the reinforcing bar network structure 100, the blocking boxes 10 are inserted on both sides of the reinforcing bar network 60 in a state where the reinforcing bar network 60 is laid down. In addition, the reinforcing bar network 60 and the blocking box 10 are lifted together using a crane, and since there is no separate binding between the reinforcing bar network 60 and the blocking foil 10, they can be separated from each other. Accordingly, in this example, a pair of frames 70 as shown in FIG. 10 are fixedly installed on the upper part of the reinforcing bar network 60 by bolts, etc., and the binding reinforcing bars 72 are inserted into the through holes formed in the frames 70. fix it In addition, the binding reinforcing bars 72 are bound to the reinforcing bar network 60, in particular, the longitudinal reinforcing bars 62. By the fixing unit 70, the protector structure 50 and the reinforcing bar network 60 are integrated and can maintain a coupled state without being separated from each other even in the process of being vertically erected and inserted into the excavation part while moving. Of course, the frame may be directly coupled to the longitudinal reinforcement and fixed without using the binding reinforcement.

When the underground continuous wall reinforcing bar network structure 100 is installed in the excavation unit, the fixing unit 70 is separated from the protector structure 50 and the reinforcing bar network 60 before concrete is poured.

The above fixing unit 70 is installed on the upper side of the continuous wall reinforcing bar network structure 100 to integrate the reinforcing bar network and the protector structure as a whole, but there are cases in which the lower portion of the reinforcing bar network structure 100 also needs to be fixed. In this example, the lower portion of the reinforcing bar network structure 100 may be fixed using a fixing band (not shown) that surrounds the reinforcing bar network 60 and the pair of protector structures 50 installed on both sides thereof. The fixing band is also separated just before the reinforcing bar network structure is positioned vertically and inserted into the excavation.

Hereinafter, with reference to FIGS. 11 to 14, a method of constructing an underground continuous wall using the protector structure 100 having the above configuration will be described.

As described in the prior art, the preceding panel portion (A) and the following panel portion (B) are partitioned along the area where the underground continuous wall is to be made, and the preceding panel portion (A) is first excavated. In addition, the underground continuous wall reinforcing bar network structure 100 is assembled by combining the protector structures 50 on both sides of the lattice-shaped reinforcing bar network 60 having the above structure. After excavating the preceding panel portion, an underground continuous wall reinforcing bar network structure is inserted into the excavation portion, and concrete (C) is poured and hardened only in the space between the pair of protector structures. The concrete (C) is not introduced into the enclosures 12 and 13 by the blocking pins 31 and 32. Also, due to the cover 40, the concrete C is not in contact with the blocking pins 31 and 32. When the concrete of the preceding panel is cured, the state shown in FIG. 11 is obtained.

When the preceding panel is completed, the following panel portion (B) is excavated with the protector structure 50 remaining. When excavation of the trailing panel part (B) is completed, the protector structure 50 is towed by a crane and carried out to the ground. This state is shown in FIG. 12 . When a crane (not shown) lifts the blocking box 10 upward, the transverse reinforcement 61 can slide along the slit portion 20, so the blocking box 10 and the reinforcing bar network 60 can be separated from each other there is. Since the longitudinal reinforcing bars 62 are formed in the longitudinal direction, there is no interference when the blocking box 10 is pulled upward. In this example, the slit portion 20 is formed through the entire height direction of the blocking box, and the transverse reinforcing bars 61 are inserted into the blocking box through the slit portion 20, so that the blocking box 10 If it is raised vertically upwards, only the blocking box 10 can be separated without the interference of the transverse reinforcing bars 61. Although the transverse reinforcement 61 is caught on the cover 40 or the blocking pins 31 and 32, there is no problem in separating and discharging the blocking box because the lifting force of the crane is strong.

That is, in the present invention, by forming a slit section that is long incised in the vertical direction, the transverse reinforcement of the preceding panel can be extended to the inside of the blocking box, and the blocking box can be removed without interfering with the transverse reinforcement. By forming the slit portion, the problem is that the concrete flows into the blocking box through the slit portion. This problem was solved by using a blocking pin. Furthermore, by using a blocking pin, a cover was installed to prevent the concrete and the blocking pin from being tangled together. That is, while maintaining the advantages obtained by forming the slit, problems such as inflow of concrete or coupling between concrete and blocking pins were solved by adding another configuration. Furthermore, a structure was developed to install a bulkhead member so that there is no problem with the construction of the trailing panel even if some of the concrete flows in.

As described above, after the excavation of the trailing panel portion (B), a lagging reinforcing bar network in which a plurality of transverse reinforcing bars 81 and longitudinal reinforcing bars 82 are connected in a lattice form is inserted into the trailing panel portion (B). At this time, the longitudinal reinforcing bars 82 disposed at the end of the transverse reinforcing bars 81 of the lagging reinforcing bar network and the outermost side are arranged to overlap each other with the transverse reinforcing bars 61 and longitudinal reinforcing bars 62 of the preceding reinforcing bar network 60. This state is shown in FIG. 13 .

In the state shown in FIG. 13, when the concrete (C) is poured and cured on the trailing panel part (B), the state shown in FIG. 14 is obtained, and the underground continuous wall is completed. Although it is not shown precisely in FIG. 14, there may be a fine gap between the preceding panel and the following panel because there is a time lag between the casting of concrete. In this example, since the water stop plate 14 blocks the space between them, it is possible to prevent ground water or rainwater from flowing into the building from the ground outside the building along the gap.

On the other hand, although not shown, the front surface of the blocking box according to the present invention may be formed with concavo-convex portions protruding or concave concave portions. The front surface of the blocking box acts as a formwork when placing concrete, and protrusions or depressions of corresponding shapes are formed in the concrete due to irregularities or depressions. And this hardened concrete acts as a formwork for the adjacent concrete panels. As a result, two adjacent concrete panels have protrusions and recesses interlocked. This structure gives shear resistance that prevents relative movement even when shear force is applied between adjacent concrete panels.

As described above, in the present invention, the slit portion is installed in the blocking box to enable overlapping of the reinforcing bar mesh between two adjacent concrete panels. Although the transverse reinforcing bars are inserted into the blocking box, the barrier box and the reinforcing bar network can be easily separated, so the construction is very easy.

Meanwhile, above, a structure in which a preceding panel and a following panel are alternately arranged in an underground continuous wall has been described as an example. In this case, the following panels are installed between the preceding panels, and no protector structures are installed on both sides of the reinforcing bar net of the following panels. However, after installing the preceding panel, a structure in which the following panel structure is continuously attached to both sides of the preceding panel is also possible. That is, it is a structure in which the following panel is continuously attached to the side of the preceding panel. A structure in which succeeding panels are continued in the order of preceding panel - following panel - following panel - following panel is also possible. In this structure, the preceding panel refers to a panel in which concrete is poured by installing protector structures on both sides of the reinforcing bar network as before, and the following panel refers to a panel in which a protector structure is installed only on one side (opposite side of the preceding panel) and concrete is poured. panel of cases. The present invention does not exclude a structure in which a preceding panel and a following panel are alternately arranged, as well as a structure in which subsequent panels are continuously connected to both sides of a preceding panel. The "concrete panel" described in the claims of the present invention means all panels of reinforced-concrete structure, regardless of the names of the preceding and following panels.

In addition, in the present invention, the transverse reinforcing bars inserted into the protector structure are described and illustrated as being the reinforcing bars of the concrete panel, but separate overlapping reinforcing bars are not excluded. For example, apart from the basic reinforcing bar network embedded in the concrete panel, a separate '1' or 'c'-shaped lap joint reinforcing bar is inserted into the protector structure, and the lap joint reinforcing bar may be overlapped with the basic reinforcing bar network of the concrete panel. .

The protection scope of the present invention is not limited to the description and expression of the embodiments explicitly described above. In addition, it is added once again that the scope of protection of the present invention cannot be limited due to obvious changes or substitutions in the technical field to which the present invention belongs.

100 ... Underground continuous wall rebar network structure
50 ... protector structure
10 ... blocking box, 11 ... space part
12,13... enclosure, 14... water stop
20 ... slit part, 31, 32 ... blocking pin, 33, 34 ... connecting body
40,45,46 ... cover, 41 ... incision
60,80 ... rebar mesh, 61,81 ... transverse rebar, 62,82 ... longitudinal rebar
70 ... frame, 72 ... tie bar
A ... leading panel, B ... trailing panel, C ... concrete

Claims (10)

Reinforced-concrete structure concrete panels are continuously arranged to be inserted into the excavation excavated downward to construct an underground continuous wall forming the outer wall of the basement floor of the building,
A blocking box formed long in the vertical direction and having a space formed therein;
a slit part lengthwise cut along the vertical direction on the front surface of the blocking box so that a plurality of transverse reinforcing bars can be inserted into the inner space of the blocking box; and
An underground continuous wall characterized in that it includes a plurality of needle-shaped blocking pins densely installed and elastically bendable to block the slit portion to prevent concrete from flowing into the blocking box through the slit portion. Protector structure for rebar lap joint.
According to claim 1,
The blocking pin includes a first blocking pin coupled to one side of the slit portion and extending to the other side, and a second blocking pin coupled to the other side of the slit portion and extending to one side, wherein the first blocking pin and the second blocking pin are coupled to the other side of the slit portion. Protector structure for underground continuous wall reinforcing bar overlapping, characterized in that the pins are arranged overlapping each other to double block the slit portion.
According to claim 1 or 2,
To prevent concrete from adhering to the blocking pin,
A protector structure for underground continuous wall reinforcing bar overlapping, characterized in that it further includes a cover formed long in the vertical direction and disposed in front of the blocking pin and having incisions formed at regular intervals along the vertical direction.
According to claim 3,
The cover includes a first cover coupled to one side of the slit portion and extending to the other side, and a second cover coupled to the other side of the slit portion and extending to one side, so that the first cover and the second cover overlap each other. Protector structure for underground continuous wall reinforcing bar overlap, characterized in that arranged to inhibit contact between the blocking pin and concrete.
According to claim 1,
The blocking box
It is formed by arranging two enclosures in which a space part is formed inside and the slit part is formed side by side, and the surfaces in contact with each other are combined,
A protector structure for underground continuous wall reinforcing bar overlapping, characterized in that it is formed long in the vertical direction and is inserted between the two enclosures and further includes a water stop protruding in front of the blocking box.
According to claim 1,
Further comprising a partition wall member installed inside the blocking box to isolate a first area into which a plurality of reinforcing bars are introduced through the slit in the inner space of the blocking box and a second area remaining in the space from each other. A protector structure for an underground continuous wall reinforcing bar joint.
According to claim 1,
Further comprising a fixing unit that is detachably coupled to the upper portion of the blocking box and is coupled to longitudinal bars of the reinforcing bar network inserted into the concrete panel to mutually bind the blocking box and the reinforcing bar network inserted into the concrete panel. Protector structure for underground continuous wall rebar lap joint.
According to claim 7,
The fixed unit is
A frame detachably coupled to the blocking box;
A protector structure for underground continuous wall reinforcing bar overlapping, characterized in that it has a binding reinforcing bar coupled to the frame and having both ends coupled to longitudinal bars of the reinforcing bar network inserted into the concrete panel. A reinforcing bar network in which transverse reinforcing bars and longitudinal reinforcing bars are interconnected;
An underground continuous wall reinforcing bar network structure comprising: a pair of protector structures according to any one of claims 1 to 8, each installed on both sides of the reinforcing bar network. According to claim 9,
The underground continuous wall reinforcing bar network structure further comprising a fixing band that wraps and binds the lower portion of the reinforcing bar network and the lower portion of the pair of protector structures together.

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