KR102542559B1 - Structure and Method for Supporting Retaining Wall using Raker - Google Patents

Abstract

The present invention fixes the lower ends of a plurality of rakers installed at different inclines in multiple layers to the ground fixing support to transmit the load to the ground, but configures the lower end of the rakers to be coupled to the ground fixing support at a position higher than the upper surface of the foundation slab, and further Furthermore, by installing an integrated coupling member at the bottom of the plurality of rakers, all of the bottoms of the plurality of rakers are integrated into one by the integrated coupling member and fixed to the ground support, so that the multi-layer rakers are located on the same plane in the vertical direction, that is, It is located in the same vertical row, minimizes the amount of dead steel by suppressing rakers and integrated coupling members from being buried in the foundation slab, minimizes interference with the reinforcement of the foundation slab, and minimizes interference with the reinforcement of the foundation slab. It is possible to minimize the size of the opening of the slab, reduce the area and area on the vertical plane occupied by the raker to efficiently use the excavation area, and minimize interference with structural members such as columns. It relates to a raker reinforcing structure having the same vertical column support structure and a method of reinforcing a retaining wall using the same.

Description

Raker Reinforcement Structure and Reinforcement Method of Retaining Wall Using It {Structure and Method for Supporting Retaining Wall using Raker}

The present invention relates to a "Raker reinforcement structure" that supports and reinforces a retaining wall by being built using a Raker (Raker/inclined beam) and "a method of reinforcing a retaining wall using the same", specifically, by varying the inclination in multiple layers The lower ends of the plurality of rakers to be installed are fixed to the ground fixing support to transmit the load to the ground, but the lower end of the raker is configured to be coupled to the ground fixing support at a higher position than the upper surface of the foundation slab, and furthermore, an integrated coupling member at the bottom of the plurality of rakers By installing a plurality of raker bottoms are all integrated into one by an integrated coupling member and fixed to the ground fixing support so that the multi-layer raker is located on the same plane in the vertical direction, that is, located in the same vertical row, Through this, the interference with the reinforcement of the foundation slab is minimized, the lower end of the plurality of rakers, and the integrated coupling member are prevented or suppressed from being buried in the foundation slab, thereby minimizing the amount of dead steel material, and the opening of the middle slab ( It is possible to minimize the size of the opening part, reduce the area and area on the vertical plane occupied by the raker to efficiently use the excavation area, and to minimize interference with other structural members such as columns. It relates to a raker reinforcing structure having the same vertical column support structure of the used multi-layer raker and a method of reinforcing a retaining wall using the same.

In order to reinforce the retaining function by supporting the retaining walls installed by surrounding the area (excavation area) created by the excavation work, a very useful technology using an inclined brace, that is, a raker, is disclosed in Korean Patent Registration No. 10-2364430 is disclosed in

When the excavation is deep and the height of the retaining wall is quite large, a raker reinforcing structure for supporting and reinforcing the retaining wall is installed so that a plurality of rakers having different inclines when viewed in the vertical direction are arranged in multiple stages (multi-layer). Figure 1a is a schematic perspective view of a raker reinforcing structure according to the prior art, Figure 1b is a schematic transverse side cross-sectional view of the state shown in Figure 1a, Figure 1c is a schematic vertical for the state shown in Figure 1a It is a plan view. 2a to 2c are schematic perspective views (FIG. 2a) showing a state in which the foundation slab 300 and the intermediate slab 310 of a building to be constructed in an excavation area are installed in a state in which a prior art raker reinforcing structure is installed, respectively. is a horizontal side view (FIG. 2B) and a schematic vertical plan view (FIG. 2C). Figure 2d is a schematic cross-sectional side view corresponding to Figure 2b showing a state where the raker is removed. In this specification, "row" refers to the width direction (transverse direction) of the retaining wall, and "column" refers to the vertical direction. In addition, the direction from the retaining wall toward the excavation area is described as "rear", and the opposite direction, that is, the direction from the excavation area toward the retaining wall is described as "front". And since each raker is installed obliquely, the front end of the raker is described as "top" and the rear end is described as "lower".

In the prior art, while constructing the retaining wall 200, a plurality of multi-layer rakers are installed while excavating the excavation area step by step so that the ground slopes downward from the retaining wall 200. In the prior art, first, the uppermost raker (first layer raker) (S1) is installed at an angle. In installing the raker of each floor, a plurality of inclined steel beams in the transverse direction (two in the example of the drawing) are arranged side by side at adjacent positions to form one "raker set", It is common that a plurality of such raker sets are installed at intervals in the transverse direction. In the drawing, the uppermost raker (S1) is installed as a set of three raker. The upper end of the uppermost raker (S1) is tightly fixed to the retaining wall 200 and the lower end is coupled to the lower horizontal band 32 made of a beam member extending in the transverse direction to the lower support pile 31. The lower transverse strip 32 is coupled to the lower support pile 31, and the lower support pile 31 is erected and fixed in a state of being vertically embedded in the concrete support block 33 fixedly installed in the excavation area. The load applied from the plurality of multi-layer rakers is transmitted to the ground through the lower transverse strip 32, the lower support pile 31, and the concrete support block 33.

After the installation of the uppermost raker (S1), the excavation area is additionally excavated at a predetermined height so that the ground slopes downward from the retaining wall 200, and the retaining wall 200 is further built in the excavated part while middle layer raker (2nd layer raker) Install (S2). The middle layer raker (S2) is also installed in a form in which a plurality of (two in the example of the drawing) steel beams are positioned side by side in the transverse direction to form one raker set, and these raker sets are arranged in plurality. The upper end of the middle layer raker (S2) is closely fixed to the retaining wall 200 at a position lower than the top of the uppermost layer raker (S1), and the lower end is coupled to and supported by the lower transverse strip 32 like the uppermost layer raker (S1), but the middle layer Raker (S2) is arranged in parallel with the uppermost raker (S1) in the transverse direction. That is, the upper end of the middle layer raker (S2) is located below the uppermost layer raker (S1), and its lower end is coupled to the lower transverse band 32 in the same way as the uppermost layer raker (S1), so that the inclined slope is the uppermost layer raker (S1) Although different, as illustrated in FIG. 1C, in the planar shape viewed vertically from top to bottom, one raker set of middle layer raker (S2) is located side by side next to the transverse side of one raker set of top layer raker (S1) In such a way, the top layer raker (S1) and the middle layer raker (S2) are arranged next to each other in different vertical columns.

While excavating the ground of the excavation area in stages in an inclined manner in the same manner as when installing the intermediate layer raker (S2) from above, a plurality of layers of raker may be sequentially installed below the additional intermediate layer raker (S2), but for convenience, in the drawing, the intermediate layer raker ( It is shown that the lowest raker (S3) is installed following S2). In the prior art illustrated in the drawing, after installing the middle layer raker (S2), the ground of the excavation area was excavated flat from the retaining wall 200 and the lowest layer raker (S3) was installed. In particular, in the prior art of the drawing, the upper end of the lowermost raker (S3) is closely fixed to the retaining wall 200 at a position lower than the upper end of the intermediate raker (S2), but the lower end is shown as being supported by the intermediate support pile (34) .

In the prior art, as described above, the middle layer raker (S2) is different from the uppermost layer raker (S1) in inclined inclination, but since its lower end is coupled to the lower transverse band 32 in the same way as the uppermost layer raker (S1), the uppermost layer raker (S1) ) The intermediate layer raker (S2) is located side by side in the transverse direction with respect to. That is, looking at the arrangement of the vertical plane, the uppermost layer raker (S1) and the middle layer raker (S2) are placed in different vertical columns. In the prior art, due to the horizontal parallel arrangement of the multi-layer rakers (a form in which rakers of different layers are arranged side by side on a plane so that they are located in different vertical rows), as illustrated in FIG. 1C, when viewed from a plane arrangement in the vertical direction , There is not much empty space between the retaining wall 200 and the lower support pile 31. Due to this, not only is it difficult to secure sufficient working space, but there is a problem in that interference with structural members such as pillars of building structures to be built in the excavation area occurs.

In addition, in the prior art, as shown in FIGS. 1A to 1C, the concrete support block 33 is extended in the transverse direction to form a so-called "stem base" form, and the longitudinal force from the multi-layer raker ) and the lower support pile 31, since it is applied in a concentrated state to the concrete support block 33, there is a risk that the concrete support block 33 will be overturned. In order to prevent overturning, there is no choice but to increase the longitudinal width of the concrete support block 33 based on the position where the lower end of the raker exists. In the case of the existing concrete support block 33 formed in the form of a stem, The longitudinal width of the concrete support block 33 becomes excessively large in the part where the horizontal force of is relatively small (the gap between the raker sets), which causes the use of unnecessary concrete and the consequent increase in cost. .

In the prior art, after all the rakers of the necessary layers are installed in the manner described above, a concrete foundation slab 300 having a predetermined thickness is poured on the bottom of the excavation area to build a building structure in the excavation area, as illustrated in FIGS. 2A to 2C. At this time, a part of the lower end of the uppermost and middle rakers (S1 and S2) and a part of the lower end of the lowermost raker (S3) are buried in the foundation slab (300). Therefore, when the uppermost and middle layer raker (S1, S2) and the lowermost layer raker (S3) are removed, a part of the bottom buried in the foundation slab 300 eventually remains buried in concrete and is dead. Even if the multi-layer rakers are sequentially removed, most of the bottom part of the multi-layer rakers is buried in the concrete of the foundation slab 300 and sacrificed, which causes a problem that a large amount of steel materials are killed. In addition, as described above, in the prior art, since the horizontal parallel arrangement of the multi-layer raker is made and the lower part of the multi-layer raker is buried in the foundation slab 300 in a fairly large transverse area, the foundation slab 300 is disposed Interference with reinforcement occurs, and accordingly, construction of the foundation slab 300 becomes very difficult or inconvenient.

With the construction of the foundation slab 300, the middle layer slab 310 of the building structure is constructed above it. At this time, as shown in FIGS. 2A to 2C, the lowest layer raker S3 is removed while the walls of the structure are constructed. And, in the middle layer slab 310, an opening 311 through which the uppermost and middle layer rakers S1 and S2 can pass is formed in the middle layer slab 310. As described above, since multi-layer rakers are arranged in parallel in the transverse direction in the prior art, the opening 311 has to have a fairly wide size in order to allow all of the multi-layer rakers distributed over a wide area in the transverse direction to pass through. As such a large-area opening 311 exists in the middle layer slab 310, it becomes difficult to utilize the space of the middle layer slab 310, and the backfilling construction area of the opening 311 becomes wider in the future, increasing the amount of on-site work Not only the cost increases, but also the possibility of occurrence of waterproof failure in the opening 311 increases.

Ultimately, the top and middle layer rakers (S1, S2) are removed and the opening 311 is also filled. In the prior art, when installing the top and middle layer rakers (S1, S2), both the top and middle layer rakers (S1, S2) Since a part of the lower part is buried in the foundation slab 300, as illustrated in FIG. 2D, the uppermost and middle layer rakers S1 and S2 are buried in the foundation slab 300 (the portion indicated by D in FIG. 2D) is left. being demolished That is, not only the uppermost layer raker (S1) but also the middle layer raker (S2) is buried in the foundation slab 300 as much as the portion indicated by D in FIG. 2D. In this way, in the prior art, a portion of the lower end of a plurality of rakers located on each floor is buried in the foundation slab 300, resulting in a considerable amount of steel being discarded. In addition, it is necessary to perform the cumbersome task of cutting the top and middle layer rakers (S1, S2) while leaving the buried portion in the foundation slab 300, thereby reducing construction efficiency and incurring additional costs such as labor costs. do.

Republic of Korea Patent Registration No. 10-2364430 (2022. 02. 16. Notice).

The present invention was developed to overcome the limitations of the prior art as described above, and while constructing the retaining wall, the excavation area is excavated step by step so that the ground slopes downward from the retaining wall, and a multi-layer raker is installed to support and reinforce the retaining wall. The "Raker Reinforcement Structure" is built, but the bottom of the multi-layer rakers is integrally combined and fixed by an integrated coupling member, and at the same time, the multi-layer rakers are arranged in the same vertical row in the vertical direction, so that the multi-layer rakers occupy the It is an object of the present invention to provide a technology capable of securing a wider working space in an excavation area by reducing the area and minimizing interference with reinforcement of a foundation slab.

In addition, when installing a multi-layer raker and constructing an intermediate layer slab of a building structure, the size of the opening of the intermediate layer slab through which the raker will pass can be minimized, and the vertical plane can be efficiently used, so that other structural members and It is an object of the present invention to provide a technology capable of minimizing the interference of

In particular, the present invention transfers the horizontal force in the longitudinal direction applied from the multi-layer raker through the integrated coupling member to the ground by the ground fixation support installed on the ground in the excavation area, but the integrated coupling member is the ground fixation support at a position higher than the upper surface of the foundation slab By configuring to be coupled to, the raker and the integrated coupling member are not buried in the foundation slab or the buried portion is minimized, and through this, when the raker and the integrated coupling member are removed, they are buried in the foundation slab and buried An object of the present invention is to provide a technology that can improve construction economics by preventing or minimizing the amount of steel.

Furthermore, the present invention aims to provide a technology that enables economical and efficient construction by suppressing unnecessary use of concrete while eliminating or minimizing the risk of overturning of concrete blocks constituting the ground anchoring support in constructing a ground anchoring support. to be

In order to achieve the above object, in the present invention, a raker reinforcing structure that supports and reinforces a retaining wall by a raker disposed inclined downward from the retaining wall to the rear ground, the raker each has a different inclination so that the upper end is attached to the retaining wall It is composed of a multi-layer raker including an uppermost layer raker and an intermediate layer raker that are tightly fixed; The lower end of the uppermost raker and the lower end of the middle raker are coupled to the ground fixation support installed on the ground of the excavation area to transmit the force from the retaining wall to the ground fixation support; The ground fixing support is a concrete support block made of a concrete structure embedded in the ground of the excavation area, a front support pile fixed to the concrete support block, and a front support pile fixed to the concrete support block to support the front support pile from the rear of the front support pile It is configured to include a rear support member, and a lower horizontal band made of a beam member extending in the transverse direction so that the lower end of the uppermost raker and the lower end of the middle layer raker are coupled; The lower transverse strip is coupled to the front support pile at a position higher than the upper surface of the foundation slab to be cast on the ground, so when the foundation slab is poured, the lower end of the uppermost raker and the lower end of the middle raker are not buried in the foundation slab, but the upper side of the foundation slab There is provided a raker reinforcing structure characterized in that it has a configuration located in.

In addition, in the present invention, while excavating the excavation area at the rear of the retaining wall in an inclined manner in stages, by sequentially installing the uppermost raker and the middle layer raker, each having a different inclination for each excavation step, to build a raker reinforcement structure, thereby supporting and reinforcing the retaining wall. to do; When installing the top layer raker and the middle layer raker, the top of each raker is tightly fixed to the retaining wall; The lower end of the uppermost raker and the lower end of the middle raker are coupled to the ground anchoring support installed on the ground of the excavation area to make the force from the retaining wall transmitted to the ground anchoring support; The ground fixing support is a concrete support block made of a concrete structure embedded in the ground of the excavation area, a front support pile fixed to the front position of the concrete support block, and a concrete support block to support the front support pile at the rear of the front support pile It is installed to have a configuration including a rear support member fixed to, and a lower horizontal strip made of a beam member extending in the transverse direction so that the lower end of the uppermost raker and the lower end of the middle layer raker are coupled; The lower transverse strip is coupled to the front support pile at a position higher than the upper surface of the foundation slab to be cast on the ground, so when the foundation slab is poured, the lower end of the uppermost raker and the lower end of the middle raker are not buried in the foundation slab, but the upper side of the foundation slab There is provided a method of reinforcing a retaining wall, characterized in that it has a configuration located in.

In the raker reinforcing structure of the present invention as described above and the method of reinforcing a retaining wall using the same, the top of the middle layer raker is located under the top of the top layer raker in the same vertical row as the top of the top layer raker, and the bottom of the middle layer raker is the bottom of the top layer raker. Located under the lower end of the uppermost raker in the same vertical row, the lower end of the uppermost raker and the lower end of the intermediate raker are integrally coupled to an integrated coupling member, so that the uppermost raker and the intermediate raker are arranged in the same vertical row; The rear end of the integrated coupling member may be coupled to the lower horizontal band of the ground fixing support so that the integrated coupling member is positioned above the foundation slab without being buried in the foundation slab.

In addition, in the present invention, the rear support member for supporting the front support pile is disposed between the rear support pile fixed to the concrete support block and the front and rear support piles in a straight position at a longitudinal interval to the rear of the front support pile It may be configured to include a longitudinal horizontal support integrally coupled, and a lowermost raker may be further provided below the intermediate raker. located below the top of; The lower end of the lowermost raker is also integrally coupled to the integrated coupling member, and the lower end of the lowermost raker at the front end of the integrated coupling member is positioned below the lower end of the intermediate raker in the same vertical column as the lower end of the intermediate raker to be coupled. .

In addition, in the raker reinforcing structure and the method of reinforcing a retaining wall using the same, the integrated coupling member is made of a beam member, and a plurality of joint plates are provided at the front end of the integrated coupling member vertically in the vertical direction, and the bottom and bottom of the uppermost raker A bonding plate is also provided at each lower end of the intermediate layer raker; The bonding plate provided at the lower end of the uppermost layer raker is integrally coupled with the bonding plate provided at the upper part among the plurality of bonding plates provided on the integrated coupling member, and the bonding plate provided at the lower end of the middle layer raker is a plurality of bonding plates provided on the integrated coupling member. It is a structure that is integrally coupled with a joint plate provided below among the joint plates, and may have a configuration in which the lower end of each multi-layer raker and the front end of the integrated coupling member are integrated. In this case, in particular, the top of the lowest layer raker is located below the top of the middle layer raker in the same vertical row as the top of the middle layer raker, and a joint plate is provided at the bottom of the lowest layer raker, so that among the plurality of joint plates provided in the integrated coupling member, the bottom of the middle layer raker The joint plate located below the joined position and the joint plate provided at the lower end of the lowermost raker may be integrated, so that the lower end of the lowermost raker may also be integrated with the front end of the integrated coupling member.

In particular, in the present invention, the concrete support blocks supporting the longitudinal force from the multi-layer raker are not continuous in the transverse direction and intermittently exist only at the location where the raker set exists, but each concrete support block has a lower front support The pile and the rear support pile may have a configuration in which the longitudinal horizontal support is integrally installed between the front bottom support pile and the rear support pile, and is installed vertically in a spaced position while forming a straight line in the longitudinal direction.

In the present invention, when a raker reinforcing structure is built by installing multiple layers of raker, the multiple layers of raker are located in the same vertical row, and therefore, when viewed from a plane arrangement in the vertical direction, only the top layer raker is visible as arranged on the plane, Accordingly, in the excavation area adjacent to the retaining wall, the empty space and vertical area are significantly increased compared to the prior art. Since a wide space and vertical area are secured in the excavation area, interference when constructing structural members such as columns in the excavation area can be minimized.

In addition, in the present invention, when constructing the foundation slab of a building structure by concrete on the ground in the excavation area, the bottom of the raker of each floor is not embedded in the foundation slab, but only a part of the support pile is embedded in the foundation slab, foundation slab During construction, interference with reinforcement is minimized to improve construction efficiency, and when the installed rakers are removed, only a part of the support pile is buried in the foundation slab, so the amount of discarded steel is greatly reduced, and the steel is cut. The amount of work is also reduced, which has the effect of improving economic feasibility.

In particular, in the present invention, when an intermediate layer slab is constructed and an opening through which multi-layer rakers can pass is formed in the intermediate layer slab, in the present invention, only the uppermost layer raker is arranged on a plane when viewed from a vertical plane arrangement, so the intermediate layer slab It is possible to significantly reduce the size of the opening to be formed in the prior art, and accordingly, the space of the intermediate slab can be used more efficiently, and the backfill construction area of the opening later is reduced, reducing the amount of work and cost at the site, and The very useful advantage of being able to greatly reduce the possibility of waterproof failure is demonstrated.

In addition, the present invention transmits the horizontal force in the longitudinal direction applied through the integrated coupling member from the plurality of multi-layer rakers to the ground by the ground fixing support installed on the ground of the excavation area, but the integrated coupling member is ground at a position higher than the upper surface of the foundation slab By configuring it to be coupled to the fixed support, the raker and the integrated coupling member are not buried in the foundation slab or the buried portion is minimized, and through this, when the raker and the integrated coupling member are removed, they are buried in the foundation slab and buried ( It is possible to prevent or minimize the amount of steel material that is destroyed, and thus, the effect of improving the economic efficiency of construction is exerted.

Furthermore, in the present invention, in constructing a ground fixation support that supports the longitudinal horizontal force applied from a plurality of multi-layer rakers through an integrated coupling member, the concrete block constituting the ground fixation support is transverse, not in the form of a stem foundation in the prior art. By installing in a form that is intermittently present only in the location where the raker set exists, the amount of concrete used for the concrete support block is reduced and economic efficiency is improved, while preventing the overturn risk of the concrete support block from multiple rakers in multiple layers. It has the effect of being able to stably support the longitudinal and horizontal forces.

Figure 1a is a schematic perspective view of a raker reinforcing structure installed according to the prior art.
Fig. 1b is a schematic cross-sectional side view of the state of Fig. 1a;
Fig. 1c is a schematic vertical plan view of the state of Fig. 1a.
2a is a schematic perspective view showing a state in which a foundation slab and an intermediate slab of a building structure are constructed in an excavation area following the state of FIG. 1a.
Fig. 2b is a schematic cross-sectional side view of the state of Fig. 2a;
Figure 2c is a schematic vertical plan view of the state of Figure 2a.
Fig. 2d is a schematic cross-sectional side view corresponding to Fig. 2b showing a state in which the raker is removed subsequent to the state in Fig. 2a.
Figure 3a is a schematic perspective view showing a state in which the top raker is installed after the first stage excavation in order to construct a raker reinforcing structure according to the present invention.
Fig. 3b is a schematic cross-sectional side view of the state of Fig. 3a;
Fig. 3c is a schematic vertical plan view of the state of Fig. 3a.
Figure 4a is a schematic perspective view showing a state in which the intermediate raker is installed after the second stage excavation following the state of Figure 3a.
Fig. 4b is a schematic cross-sectional side view of the state of Fig. 4a;
Fig. 4c is a schematic vertical plan view of the state of Fig. 4a.
Figure 5a is a schematic perspective view showing a state in which the lowest raker is installed following the state of Figure 4a.
Fig. 5b is a schematic cross-sectional side view of the state of Fig. 5a;
Fig. 5c is a schematic vertical plan view of the state of Fig. 5a.
Figures 6a to 6c is a plan view in the vertical direction corresponding to Figure 3c showing an example of deformation by changing the vertical plane shape of the concrete support block in the present invention, respectively.
Figure 7 is a schematic perspective view corresponding to Figure 3a showing an embodiment in which the rear support member for supporting the front support pile in the present invention is made of an inclined beam.
Figure 8a is a schematic enlarged view of the circle E portion of Figure 3b.
8b and 8c are schematic perspective views showing the state of FIG. 8a in different directions, respectively.
9a and 9b are schematic perspective views each showing an integrated coupling member according to an embodiment of the present invention in different directions.
10A is a schematic enlarged view of a circle F in FIG. 4B.
10b and 10c are schematic perspective views showing the state of FIG. 10a in different directions.
11A is a schematic transverse cross-sectional view corresponding to FIG. 5B of a reinforcing structure of a retaining wall constructed according to another embodiment of the present invention.
FIG. 11B is a vertical plan view corresponding to FIG. 5C for the embodiment of FIG. 11A.
12a is a schematic perspective view showing a state in which a foundation slab and an intermediate slab of a building are constructed in an excavation area following the state of FIG. 5a in the present invention.
Fig. 12b is a schematic cross-sectional side view of the state of Fig. 12a;
Fig. 12c is a schematic vertical plan view of the state of Fig. 12a.
Fig. 12d is a schematic cross-sectional side view corresponding to Fig. 12b showing a state in which the raker is removed subsequent to the state in Fig. 12a.
13A is a schematic transverse side view corresponding to FIG. 10A of another embodiment of an integrated coupling member according to the present invention.
Figure 13b is a schematic perspective view of the embodiment shown in Figure 13a.
Figure 14a is a schematic transverse side view corresponding to Figure 10a of another embodiment of the integrated coupling member according to the present invention.
Figure 14b is a schematic perspective view of the embodiment of Figure 14a.
15A is a schematic transverse side view corresponding to FIG. 10A of another embodiment of an integrated coupling member according to the present invention.
Figure 15b is a schematic perspective view of the embodiment of Figure 15a.
16 is a schematic transverse cross-sectional view corresponding to FIG. 12B of using the ground anchoring support of the present invention in a raker reinforcing structure according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention has been described with reference to the embodiments shown in the drawings, but this is described as one embodiment, and thereby the technical idea of the present invention and its core configuration and operation are not limited. In particular, various configurations and characteristics of the present invention described in this specification may be provided in all of the retaining wall and the raker reinforcing structure therefor, but only some configurations and characteristics may be selected and provided if necessary.

Figures 3a to 5c show the process of constructing and constructing the "Raker reinforcement structure" according to the present invention while constructing the retaining wall, respectively. Figure 3a is a schematic perspective view showing a state in which the uppermost raker (S1) is installed according to the present invention after the first step of excavation in the excavation area, Figure 3b is a schematic transverse cross-sectional view of the state of Figure 3a is shown 3c shows a schematic vertical plan view of the state of FIG. 3a. Figures 4a to 4c show a state in which the middle layer raker (S2) is installed according to the present invention after the second stage excavation of the excavation area, respectively, and Figures 5a to 5c show the lowest layer according to the present invention after the third stage excavation of the excavation area, respectively. Shows the installed state of Laker (S3). 4A and 5A are respectively schematic perspective views, FIGS. 4B and 5B are respectively schematic transverse cross-sectional views, and FIGS. 4C and 5C are respectively schematic vertical plan views. 6a to 6c show a plan view in the vertical direction corresponding to FIG. 3c showing an example in which the vertical plane shape of the concrete support block 33 constituting the ground fixation support 30 is varied and deformed.

In the description of the present invention with reference to the drawings, the same reference numbers are given for the same parts as those described in the prior art, and the descriptions are omitted or briefly abbreviated. Describe in detail.

The raker reinforcing structure according to the present invention is built by installing a plurality of multi-layered rakers while constructing the retaining wall 200 while stepwise excavating the excavation area to a predetermined height so that the ground slopes downward from the retaining wall 200. Specifically, as illustrated in FIGS. 3A to 3C for the excavation area, the uppermost raker (uppermost raker) (S1) is installed obliquely after the first stage excavation, and subsequently, as illustrated in FIGS. 4A to 4C, the uppermost raker (S1) The second step excavates the excavation area to a predetermined height so that the ground slopes downward from the retaining wall 200 at the bottom of the retaining wall 200, and further builds the retaining wall 200 at the excavated part while installing the intermediate raker S2 at an angle. If necessary, repeat the additional excavation of the excavation area and the installation of additional multiple layers of rakers in the same manner as above at the bottom of the intermediate layer raker (S2), and finally, as illustrated in FIGS. 5a to 5c, the retaining wall After the final excavation work of excavating the ground of the excavation area flat from (200), the lowest raker (S3) is installed. For convenience, in the drawings of the present invention referred to in the description below, it is illustrated that the uppermost layer, the middle layer, and the lowest layer raker (S1, S2, S3) exist. In the present invention, in installing the uppermost, middle, and lowermost raker (S1, S2, S3), respectively, in each layer, a plurality of inclined steel beams (two in the example of the drawing) are side by side in the transverse direction By being arranged, “one raker set” is formed, and this “raker set” has a configuration in which the required number of raker sets is installed in a plurality of positions at intervals in the transverse direction according to the width of the retaining wall.

In the present invention, in installing the uppermost raker (S1) inclined, the top of the uppermost raker (S1) is tightly fixed to the retaining wall 200 as in the prior art, but the lower end of the uppermost raker (S1) is attached to the integrated coupling member (1) The lower end of the uppermost raker (S1) itself becomes an integrated coupling member (1), as integrally coupled or described later.

The ground fixation support 30 is fixedly installed on the ground of the excavation area, and the rear end of the integrated coupling member 1 is firmly coupled to the ground fixation support 30. Accordingly, the vertical horizontal force and the vertical force in the vertical direction applied from the uppermost raker S1 are applied to the ground fixation support 30 through the integrated coupling member 1 and transmitted to the ground through the ground fixation support 30. In the present invention, the ground fixing support 30 is a concrete support block 33, a front support pile 37, a rear support member that is fixed to the rear of the front support pile 37 to support the front support pile 37, And it is configured to include a lower transverse band (32). The concrete support block 33 is a concrete structure embedded in the ground of the excavation area, and the front support pile 37 is vertically fixed to the concrete support block 33, and the front support pile 37 is installed in the rear of the front support pile 37. A pile support member for supporting the support pile 37 is provided in a fixed state to the concrete support block 33.

In the case of the embodiment illustrated in the drawing, the rear support member for supporting the front support pile 37 supports concrete at a predetermined distance from the front support pile 37 at the rear forming a straight line with the front support pile 37 in the longitudinal direction. A rear support pile 38 fixed to the block 33, and a longitudinal support integrally disposed with the front and rear support piles 37 and 38 between the front support pile 37 and the rear support pile 38 It is composed of (39). In the present invention, the configuration of the rear support member for supporting the front support pile 37, in addition to the rear support pile 38 and the longitudinal support 39, is simply rear to support the front support pile 37. It may also consist of only inclined beams 37a that are inclined and the lower end is buried in the concrete support block 33. 7 is a schematic perspective view corresponding to FIG. 3a showing an embodiment in which the rear support member for supporting the front support pile 37 is made of an inclined beam 37a in this way. However, the rear support member for supporting the front support pile 37 in the present invention is not limited to that illustrated in the drawings and may be made of various other forms.

A lower horizontal wale 32 made of a beam member extending in the transverse direction is installed on the front support pile 37, and the rear end of the integrated coupling member 1 is firmly coupled to the lower horizontal wale 32. Denoted by reference numeral 32a is a wale support member 32a integrally provided on the front support pile 37 and on which the lower horizontal wale 32 is placed. As illustrated in the drawing, in the present invention, the front support pile 37 is led out so as to rise vertically upward from the upper surface of the concrete support block 33. The lower horizontal band 32 is preferably coupled to the front support pile 37 at a position higher than the thickness of the foundation slab 300 to be described later from the upper surface of the concrete support block 33. In this configuration, the position where the rear end of the integrated coupling member 1 is coupled to the lower transverse band 32 is higher than the upper surface of the foundation slab 300. Therefore, when the foundation slab 300 is constructed by pouring concrete, the integrated coupling member 1 and the lower end of the multi-layer raker coupled thereto are all located above the foundation slab 300 and embedded in the foundation slab 300 Steel materials do not exist at all, and accordingly, it is possible to fundamentally prevent the occurrence of dead parts buried in the foundation slab 300, thereby reducing the amount of discarded steel materials, excluding the work of cutting steel materials, and Significant cost savings can be achieved.

In forming the concrete support block 33 of the ground fixation support 30, as illustrated in FIG. 3c, the concrete support block 33 is intermittently formed only at the position where the bottom of the multi-layer raker is gathered while having a predetermined transverse width may be In order to individually support a plurality of raker sets spaced apart in the transverse direction in this way, in installing concrete support blocks 33 having a predetermined transverse width only at locations where each raker set exists, as shown in FIG. 6A, each The vertical plane shape of the individual concrete support block 33 of may have a trapezoidal shape. However, if necessary, as shown in FIG. 6B, individual concrete support blocks 33 may have a trapezoidal vertical plane shape and have a configuration in which they are connected to each other in the form of a stem sheath, and the vertical plane shape of the form illustrated in FIG. 6C may have In the present invention, by forming the concrete support block 33 to have the vertical plane shape exemplified above, the concrete support block 33 is formed in a stable form without being inverted against the longitudinal horizontal force, while the longitudinal horizontal force acts relatively little. ) can be prevented from being excessively formed unnecessarily, and through this, the amount of concrete used can be reduced and the effect of cost reduction can be exerted accordingly.

In particular, the configuration and characteristics of the ground anchoring support 30 described above are the prior art described above with reference to FIGS. 1A to 2D, even when multi-layer rakers have a configuration in which they are arranged next to each other in different vertical columns. can be applied According to the prior art described with reference to FIGS. 1A to 2D, in fixing the lower end of the multi-layer raker to the lower transverse strip 32, the configuration of the new ground fixing support 30 proposed in the present invention, that is, concrete A form comprising a support block 33, a front support pile 37, a rear support member that is fixed to the rear of the front support pile 37 to support the front support pile 37, and a lower horizontal band 32 Thus, the ground fixation support 30 is constituted, and the lower end of the multi-layer raker can be coupled and fixed to the horizontal band 32 at the bottom of the ground fixation support 30, respectively. Through this, suppression or reduction of the amount of steel material buried in the foundation slab 300, elimination of steel cutting work, and consequently significant cost reduction effect, furthermore, concrete support block 33 through prevention of excessive formation It is possible to achieve the effect of reducing the amount of use and reducing the cost accordingly.

Returning to the description of the process of installing the uppermost raker (S1) inclined again, as illustrated in the drawing while installing the uppermost raker (S1), if necessary, between the retaining wall 200 and the lower support pile 31 is intermediate The support pile 34 is installed vertically, and the intermediate support beam 35 and the support member 36 extending in the transverse direction are installed on the intermediate support pile 34 to install the intermediate support beam 35 and the support member 36 It may be configured so that the uppermost raker (S1) is additionally supported by.

Figure 8a is a schematic partial enlarged side view showing in detail the part of the circle E shown in Figure 3b, that is, the part where the lower end of the uppermost raker S1 is coupled to the integrated coupling member 1 according to an embodiment of the present invention, 8b and 8c are schematic perspective views showing the configuration shown in FIG. 8a in different directions, respectively. 9A and 9B are schematic perspective views showing only the integrated coupling member 1 shown in FIGS. 8A to 8C and showing different viewing directions. In the present invention, one integrated coupling member (1) is integrally coupled to each lower end of the multi-layered raker, so that the supporting force applied through each lower end of the multi-layered raker is one integrated member (1) to the ground in the excavation area It is delivered to the installed ground fixation support (30). To this end, each lower end of the multi-layer raker is integrated and integrally coupled to the front end of the integrated coupling member 1, and the rear end of the integrated coupling member 1 is coupled to the ground fixing support 30 installed on the ground in the excavation area . In the embodiment of the present invention illustrated in FIGS. 8A and 8B, the ground fixation support 30 includes the concrete support block 33, the front support pile 37, the rear support member and the lower horizontal strip 32 as described above. It has a configuration including, and the rear end of the integrated coupling member 1 is in close contact with the lower horizontal band 32 and can be integrated by various other methods such as welding or bolting.

Like the embodiment of the present invention illustrated in FIGS. 8A to 8C, 9A, and 9B, the integrated coupling member 1 may be formed of an I-shaped cross-section beam member having upper and lower flanges and webs. At the front end of the coupling member 1, a plurality of bonding plates 11, so-called "maguri plates," are provided vertically in the vertical direction, and correspondingly, bonding plates are provided at each lower end of the multi-layer raker, provided at the lower end of each multi-layer raker. In a state where each joint plate and the joint plate 11 of the integrated coupling member 1 are in contact with each other, the bottom of each multi-layer raker and the front of the integrated coupling member 1 are combined by various methods such as bolt coupling and welding coupling. The ends may be integral. Since multi-layer rakers, that is, a plurality of rakers located on different layers can be coupled to one integrated coupling member 1, the bonding plate 11 as described above is formed into a plurality of integrated coupling members 1 according to the number of rakers to be combined. ) is provided. In particular, since the raker of each layer has a different inclination, the angle at which the rear end is coupled to the integrated coupling member 1 is also different, and accordingly, the plurality of joint plates 11 are vertically inclined by varying the inclination of the integrated coupling member 1 It is provided in an up and down direction. If necessary, as illustrated in the drawings, the integrated coupling member 1 may be made of a tapered cross-section beam member whose cross-sectional size decreases toward the rear end, through which the amount of steel of the integrated coupling member 1 is further reduced, thereby Advantages such as reduced manufacturing and handling costs can be obtained. In order to make the rear end of the integrated coupling member 1 easily coupled to the lower horizontal band 32, the end plate 15 coupled to the lower horizontal band 32 is provided at the rear end of the integrated coupling member 1 It can be.

As described above, a plurality of steel beams (two in the example of the drawing) are placed side by side in the transverse direction to form "one raker set", and such a "raker set" is arranged at intervals in a plurality of transverse directions. An uppermost raker (S1) may be installed. At this time, as illustrated in the drawing, one integrated coupling member 1 may be provided for each steel beam constituting one raker set. That is, one integrated coupling member 1 can be provided to correspond to one steel beam of the uppermost raker (S1). However, although not illustrated in the drawing, one integrated coupling member 1 may be provided to correspond to the entire raker set. That is, if necessary, for example, if one raker set consists of two steel beams, the size of the integrated coupling member 1 in the transverse direction is increased to two steel beams of one raker set arranged side by side in the transverse direction All of these may be configured to be coupled to one integrated coupling member (1).

Again referring to FIGS. 4A to 4C , the installation steps of the intermediate layer raker (S2) will be described. After installing the uppermost raker (S1), the excavation area is additionally excavated at a predetermined height so that the ground slopes downward from the retaining wall 200, and the retaining wall 200 is further built vertically downward, as shown in FIGS. 4a to 4c Install the intermediate layer raker (S2) as shown. At this time, in the present invention, the middle layer raker (S2) is installed to be located in the same vertical column as the top layer raker (S1). In the middle layer raker (S2), a plurality of (two in the example of the drawing) steel beams are positioned side by side in the transverse direction to form one raker set, and these raker sets can be installed in a plurality of arrangements. In each of the raker sets of (S2), the upper end of the steel beam constituting the raker is closely fixed to the retaining wall 200, but its position is vertically below the uppermost raker (S1).

The lower end of the steel beam constituting the raker in each of the raker sets of the intermediate raker (S2) is integrally coupled to the integrated coupling member (1) vertically below the lower end of the uppermost raker (S1). Figure 10a is a schematic partial enlarged view showing in detail the part of the circle F shown in Figure 4b, that is, the part where both the lower end of the uppermost raker (S1) and the lower end of the middle layer raker (S2) are coupled to the integrated coupling member (1). 10b and 10c each show a schematic perspective view showing the configuration shown in FIG. 10a in a different direction. As illustrated in Figures 10a to 10c, at the front end of the integrated coupling member 1, the lower end of the uppermost raker (S1) is located on the upper side and the lower end of the intermediate layer raker (S2) is located on the lower side of the uppermost raker (S1) The lower end of the middle layer and the lower end of the raker (S2) are positioned up and down in the same vertical row at the front end of the integrated coupling member (1) while being coupled to the integrated coupling member (1) and integrated. As such, in the present invention, the middle layer raker (S2) is disposed under the uppermost layer raker (S1) with a different inclination, but the lower end thereof is coupled to the same integrated coupling member (1), so that the uppermost layer raker (S1) and the middle layer raker ( S2) is located on the same vertical column. When installing the middle layer raker (S2), if necessary, an additional support member 36 is installed on the intermediate support beam 35 of the intermediate support pile 34 to support the middle layer raker (S2) as well as the top layer raker (S1) It may also be configured to be additionally supported by the member 36.

As shown in Figures 5a to 5c, after the installation of the middle layer raker (S2), after the third stage of excavation in the excavation area, the lowest layer raker (S3) may be installed. At this time, the lowest layer raker (S3) is installed so as to be located below the middle layer raker (S2) in the same vertical row as the uppermost and middle layer raker (S1, S2). In the embodiment of the present invention illustrated in Figures 5a to 5c, it is shown that the upper and lower ends of the lowermost raker (S3) are fixed in the same manner as in the prior art described above. The upper end of the lowermost raker (S3) is tightly fixed to the retaining wall 200 under the vertical layer of the middle layer raker (S2). In order to fix and support the lower end of the lowermost raker (S3), in the embodiment of the drawing, a lower horizontal band 32 made of a beam member disposed in the transverse direction is installed on the intermediate support pile 34, so that the lowermost raker (S3) It has a configuration in which the lower end of is coupled to the transverse band 32. If necessary, another concrete support block 33 may be installed on the ground so that the intermediate support pile 34 is fixed. In installing the lowest layer raker (S3), since there is enough work and installation space below the top and middle layer raker (S1, S2), the lowest layer raker (S3) is vertically below the top layer raker (S1) or middle layer raker (S2) It can be installed so that it is located in That is, the lowermost raker (S3) can be placed in the same vertical column as the uppermost raker (S1) or the middle layer (S2).

However, the lowest layer raker (S3) can also be coupled to the lower end of the integrated coupling member (1) like the middle layer raker (S2). 11a and 11b are schematic transverse side views corresponding to FIG. 5b for an embodiment of the present invention in which not only the uppermost and middle layer raker, but also the lower end of the lowermost layer raker (S3) are coupled together to the integrated coupling member (1). (FIG. 11A) and a schematic vertical plan view (FIG. 11B) of the state of FIG. 11A are shown.

In the above description, the installation of the lowest layer raker (S3) after the installation of the middle layer raker (S2) has been exemplified, but if necessary, the middle layer is excavated step by step in an inclined manner in the same manner as when installing the middle layer raker (S2). A plurality of additional intermediate layer rakers are sequentially installed below the raker S2 to be located in the same vertical row as the uppermost and intermediate layer rakers S1 and S2, and finally the lowermost layer raker S3 can be installed. At this time, the middle layer raker added before installation of the lowermost layer raker (S3) may be coupled to the lower end of the integrated coupling member (1) in the same way as the above-described intermediate layer raker (S2).

In the prior art described above, a plurality of layers of rakers were arranged side by side on a plane so as to be located in different vertical columns, respectively. However, unlike the prior art, in the present invention, as described above, the uppermost layer raker (S1) and the middle layer raker (S2) are located in the same vertical column. That is, the lower end of the rakers of the plurality of layers is coupled to one integrated coupling member 1, and thus the rakers of the plurality of layers are located in the same vertical row. Therefore, even if the raker is arranged in a plurality of layers with a different inclination, as illustrated in FIGS. 5c and 11b, only the uppermost raker, that is, the uppermost raker S1 is arranged on the plane when viewed from the vertical plane arrangement. It is visible, and accordingly, in the space between the retaining wall 200 and the lower support pile 31, the empty space and vertical area are significantly increased compared to the prior art. When comparing the installation of the uppermost and middle layer raker (S1, S2) with respect to the prior art and the present invention, compared to FIG. 1c of the prior art, shown in FIGS. 5c and 11b of the present invention in a vertical plane configuration, via That is, the empty space between the rakers is much wider. As such, in the present invention, it is possible to secure a wider working space than in the prior art, and it is possible to minimize interference with structural members such as pillars of structures to be built in the excavation area.

As in the prior art, after the lowest raker (S3) is installed, the concrete foundation slab 300 is poured and constructed on the bottom of the excavation area, and the middle layer slab 310 of the structure is constructed on the upper layer. 12a to 12c are views showing a state in which the foundation slab 300 and the intermediate slab 310 of the building are constructed in the excavation area after constructing the reinforcing structure of the retaining wall according to the present invention, respectively. It is a perspective view, Figure 12b is a schematic cross-sectional side view, Figure 12c is a schematic vertical direction plan view. Fig. 12d is a schematic cross-sectional side view corresponding to Fig. 12b showing the state after removing the raker.

As described above, in the present invention, the front support pile 37 is derived vertically upward so as to rise from the upper surface of the concrete support block 33, and the lower transverse wale 32 is vertically in this way Concrete support block 33 Since it is coupled to the front support pile 37 at a position as high as a predetermined length on the upper surface of and is provided above the upper surface of the foundation slab 300, the rear end of the integrated coupling member 1 coupled to the lower horizontal band 32 is It exists at a higher position than the upper surface of the foundation slab 300. Therefore, as clearly illustrated in FIG. 12B, both the lower end of the integrated coupling member 1 and the multi-layer raker coupled thereto are located above the foundation slab 300 and are not buried in the foundation slab 300. That is, in the configuration of the present invention as described above, neither the lower end of the raker nor the integrated coupling member 1 is buried in the foundation slab 300 at all. Therefore, when the rakers are removed, the rakers can be removed and recovered in an intact state rather than in a cut form, and the integrated coupling member 1 can also be completely removed and recovered without cutting. Furthermore, the lower horizontal band 32 supporting the integrated coupling member 1 can also be recovered.

In the prior art, not only the uppermost raker (S1) but also the lower part of the middle layer raker (S2) is embedded in the foundation slab 300. ), the steel had to be cut accordingly, and there was a part of the steel that was buried in the foundation slab. However, in the present invention of the configuration in which the integrated coupling member 1 is present on the foundation slab 300 as described above, the steel material buried in the concrete of the foundation slab 300 does not occur at all. Therefore, in the present invention, it is possible to omit the cutting operation of the raker and the integrated coupling member 1 and to prevent the occurrence of buried steel materials, thereby improving construction efficiency and significantly reducing construction costs. . In addition, since the raker, the integrated coupling member (1), and the lower transverse strip (32) can be recovered intact without damage, not only is it easy to recycle, but also the bottom of the raker and the integrated coupling member (1) are completely buried in the foundation slab (300) Since it is not, interference with the reinforcement arranged on the foundation slab 300 does not occur, and the effect of further improving construction efficiency is also exhibited.

As described above, the lower transverse wale 32 is present at a higher position than the upper surface of the foundation slab 300, so that the rear end of the integrated coupling member 1 coupled to the lower transverse wale 32 and the integrated coupling member 1 are coupled to When the lower ends of the multi-layer raker are all located on the foundation slab 300, the concrete support block 33 has a greater overturning moment than in the case of the prior art by the longitudinal horizontal force from the raker applied through the integrated coupling member 1 may work. In the present invention, the front support pile 37 is fixedly installed to the concrete support block 33, and the front support pile 37 is supported at its rear by a rear support member, and in accordance with this, the concrete support block 33 is further Since it has an increased longitudinal width and the lower horizontal band 32 is fixed to the front support pile 37, the ground anchoring support 30 of the present invention exhibits a very large resistance to the overturning moment. Therefore, even if a large overturning moment is applied by the longitudinal horizontal force applied from the raker, the concrete support block 33 does not overturn and can maintain a very stable installation state, and the lower transverse strip 32 and the integrated coupling member coupled thereto ( 1) It also maintains a stable state firmly without being pushed backward.

When the middle layer slab 310 is constructed and the opening 311 through which a plurality of layers of rakers, that is, the uppermost and middle layer rakers S1 and S2 can pass, is formed in the middle layer slab 310, in the present invention, a plurality of layers of rakers Since are arranged in the same vertical column, when viewed from above, only the uppermost raker (S1) is seen as arranged, so the size of the opening 311 is greatly reduced compared to the prior art. Therefore, according to the present invention, not only can the space of the middle layer slab 310 be used more efficiently, but also the backfilling construction area of the opening 311 is reduced, reducing the amount of on-site work and costs, and the possibility of poor waterproofing in the opening 311. A very useful advantage is exhibited that can also greatly reduce.

13a and 13b respectively show a schematic perspective view and a schematic transverse side view of another embodiment of the integrated coupling member 1 according to the present invention. In the embodiment illustrated in FIGS. 13A and 13B, an extension member 12 made of a general I-beam and extended in a direction in which the uppermost raker S1 extends is integrally coupled to the lower end of the uppermost raker S1, and the middle layer raker ( S2) further integrally connect the connection member 10 to the lower end of the extension member 12, and integrally combine the connection member 10 to the lower portion of the extension member 12 in the same vertical row as the extension member 12 (for example, welding , coupling using bolts, etc.) has a configuration in which the integrated coupling member 1 is made by the connecting member 10 and the extension member 12. That is, the integrated coupling member 1 is composed of an I-beam and extends long in the direction in which the uppermost raker S1 extends, and the front end is an extension member 12 integrally coupled to the lower end of the uppermost raker S1, and the front end It is integrally coupled to the lower end of the intermediate layer raker (S2) and the upper surface is made of a connecting member (10) integrally coupled to the lower portion of the extending member (12) in the same vertical column as the extending member (12). The lower end of the extension member 12 is coupled to the lower horizontal band 32 of the ground fixing support 30. In order to easily couple the rear end of the extension member 12 to the lower horizontal band 32, an end plate 15 coupled to the lower horizontal band 32 may be provided at the rear end of the extension member 12 .

14a and 14b also show a schematic perspective view and a schematic transverse side view of another embodiment of the integrated coupling member 1 according to the present invention, respectively. The embodiment illustrated in FIGS. 14A and 14B is a modification of the embodiment of FIGS. 13A and 13B, and the connection member 10 is attached to the lower end of the middle layer raker S2 in a state in which the lower end of the uppermost layer raker S1 is extended. Further integrally connected, and the connecting member 10 is coupled to the lower end of the uppermost raker (S1) in the same vertical row as the uppermost raker (S1) extended (for example, by welding, coupling using bolts, etc.) It has a configuration in which the integrated coupling member 1 is made. Even in this case, the end plate 15 coupled to the lower transverse band 32 may be provided at the end of the elongated part of the uppermost raker S1.

15a and 15b also show a schematic perspective view and a schematic transverse side view of another embodiment of the integrated coupling member 1 according to the present invention, respectively. In the embodiment illustrated in FIGS. 15A and 15B , the integrated coupling member 1 has a configuration including a connecting portion 13 , a support rod 14 and an end plate 15 . A plurality of bonding plates 11 are provided in front of the connecting portion 13 so that the rear ends of each of the multi-layer rakers are integrally coupled to the bonding plate 11 as described above. A rear coupling plate 130 is provided at the rear of the connecting portion 13, and one or a plurality of support rods 14 are coupled to the rear coupling plate 130. The support bar 14 extends to the rear, and the rear end of the support bar 14 is coupled to the lower horizontal band 32 of the ground fixing support 30. In order to easily couple the lower horizontal band 32 and the rear end of the support bar 14, an end plate 15 coupled to the lower horizontal band 32 may be provided at the rear end of the support bar 14. As the support rod 14, rod members having various cross-sectional shapes and materials, such as circular steel rods, polygonal cross-section pipes, or bent beams, may be used.

In the description of the present invention, the uppermost layer, the middle layer, and the lowermost layer raker (S1, S2, S3) are all illustrated as having their lower ends coupled to the integrated coupling member 1, but if necessary, the uppermost layer raker (S1) and the middle layer raker ( Only the lower end of S2 may be coupled to the integrated coupling member 1.

The configuration and characteristics of the ground anchoring support 30 according to the present invention described above can be applied to various types of raker reinforcing structures. 16 shows a ground anchoring support according to the present invention in a raker reinforcing structure (for example, a raker reinforcing structure having a configuration in which multi-layer rakers are arranged next to each other in different vertical columns) without using an integrated coupling member. A schematic cross-sectional side view corresponding to FIG. 12B showing an embodiment using (30) is shown. For convenience, in FIG. 16, a building structure composed of a foundation slab, an intermediate slab, etc. is shown as a dotted line.

1: integrated coupling member
S1: Top Raker
S2: Intermediate Raker
S3: Bottom Raker

Claims (9)

A raker reinforcing structure that supports and reinforces a retaining wall by a raker disposed inclined downward from the retaining wall to the ground behind it,
The rakers are composed of multi-layer rakers including an uppermost raker (S1) and an intermediate raker (S2), each of which has a different inclination and the upper end is tightly fixed to the retaining wall;
The lower end of the uppermost raker (S1) and the lower end of the middle layer raker (S2) are coupled to the ground fixation support 30 installed on the ground of the excavation area to transmit the force from the retaining wall to the ground fixation support 30;
The ground fixing support 30 includes a concrete support block 33 made of a concrete structure embedded in the ground of the excavation area, a front support pile 37 fixed to the concrete support block 33, and the front support pile 37 The rear support member fixedly installed to the concrete support block 33 to support the front support pile 37 at the rear of, and the lower end of the uppermost raker (S1) and the lower end of the middle layer raker (S2) are coupled transversely extended It is configured to include a lower transverse band 32 made of a beam member;
The lower horizontal band 32 is coupled to the front support pile 37 at a position higher than the upper surface of the foundation slab 300 to be cast on the ground, so that when the foundation slab 300 is poured, the lower end of the top raker S1 And Raker reinforcement structure characterized in that it has a configuration in which the lower end of the intermediate layer raker (S2) is located above the foundation slab 300 without being buried in the foundation slab 300. According to claim 1,
The top of the middle layer raker S2 is located below the top of the top layer raker S1 in the same vertical column as the top of the top layer raker S1, and the bottom of the middle layer raker S2 is in the same vertical column as the bottom of the top layer raker S1. Located below the lower end of the uppermost raker (S1), the lower end of the uppermost raker (S1) and the lower end of the middle layer raker (S2) are integrally coupled to the integrated coupling member (1) to form the uppermost raker (S1) and the middle layer raker ( S2) are arranged in the same vertical column;
The rear end of the integrated coupling member 1 is coupled to the lower horizontal wale 32 of the ground fixing support 30 so that the integrated coupling member 1 is not buried in the foundation slab 300 but above the foundation slab 300 Raker reinforcement structure, characterized in that it has a positioning configuration. According to claim 2,
A lowermost layer raker (S3) is further provided below the middle layer raker (S2);
The upper end of the lowermost raker (S3) is located below the upper end of the middle layer raker (S2) and tightly fixed to the retaining wall;
The lower end of the lowest layer raker (S3) is located below the lower end of the middle layer raker (S2) and integrally coupled to the integrated coupling member (1), so that the lowest layer raker (S3) also has the same upper layer raker (S1) and intermediate layer raker (S2). Raker reinforcement structures, characterized in that arranged in vertical rows. According to any one of claims 1 to 3,
The rear support member for supporting the front support pile 37 is a rear support pile 38 fixed to the concrete support block 33 in a straight position at a longitudinal interval to the rear of the front support pile 37 and the front support pile 38 , Raker reinforcement structure characterized in that it has a configuration comprising a longitudinal support 39 integrally coupled between the rear support piles 37 and 38. According to claim 2 or 3,
The integrated coupling member 1 has an extension member 12 integrally coupled to the lower end of the uppermost raker S1, and a front end integrally coupled to the lower end of the middle layer raker S2, and the upper surface is the same vertical as the extension member 12 It consists of a connecting member 10 integrally coupled to the lower portion of the extending member 12 in a row;
The extension member 12 is made of an I-beam extending in the same direction as the direction in which the uppermost raker S1 extends;
Raker reinforcement structure, characterized in that the front end of the extension member 12 is coupled to the lower end of the uppermost raker (S1). According to claim 2 or 3,
The integrated coupling member 1 is made of a beam member;
At the front end of the integrated coupling member 1, a plurality of bonding plates 11 are provided vertically in the vertical direction;
Bonding plates are also provided at the lower end of the uppermost raker (S1) and the lower end of the middle layer raker (S2), respectively;
The bonding plate provided at the bottom of the uppermost layer raker (S1) is integrally coupled with the bonding plate 11 provided on the upper side among the plurality of bonding plates 11 provided in the integrated coupling member 1, and the middle layer raker (S2) The bonding plate provided at the bottom has a structure that is integrally coupled with the bonding plate 11 provided at the bottom among the plurality of bonding plates 11 provided in the integrated coupling member 1, and the lower end of each multi-layer raker and the integrated coupling member ( Raker reinforcement structure characterized in that the front end of 1) is integrated. According to claim 2 or 3,
The integrated coupling member 1 is composed of a connection connecting portion 13, a support bar 14 and an end plate 15;
A plurality of bonding plates 11 are provided in the vertical direction in the front of the connecting portion 13, and the lower end of the uppermost raker S1 is the largest among the plurality of bonding plates 11 provided in the integrated coupling member 1. It is integrated with the bonding plate 11 located on the upper side, and the lower end of the middle layer raker S2 is of the position where the lower end of the uppermost layer raker S1 is joined among the plurality of bonding plates 11 provided in the integrated coupling member 1. It is integrated with the junction plate 11 located at the bottom, and a rear coupling plate 130 is provided at the rear of the connecting portion 13, and the rear coupling plate 130 has one or a plurality of support rods 14 extending rearward. ), Raker reinforcement structure characterized in that the lower end of each of the top layer raker (S1) and the middle layer raker (S2) and the front end of the integrated coupling member (1) are integrated. While excavating the excavation area at the rear of the retaining wall step by step, the upper layer raker (S1) and the middle layer raker (S2), which have different inclines for each excavation step, are sequentially installed to build a raker reinforcement structure to support the retaining wall. to reinforce;
When installing the top layer raker (S1) and the middle layer raker (S2), the top of each raker is tightly fixed to the retaining wall;
The lower end of the uppermost raker (S1) and the lower end of the middle raker (S2) are coupled to the ground fixation support 30 installed on the ground of the excavation area so that the force from the retaining wall is transmitted to the ground fixation support 30;
The ground fixing support 30 includes a concrete support block 33 made of a concrete structure embedded in the ground of the excavation area, a front support pile 37 fixed to the front position of the concrete support block 33, and the front support pile The rear support member fixedly installed to the concrete support block 33 to support the front support pile 37 at the rear of (37), and the lower end of the uppermost raker (S1) and the lower end of the middle layer raker (S2) are coupled in the transverse direction It is installed to have a configuration including a lower transverse band 32 made of a beam member extending to;
The lower horizontal band 32 is coupled to the front support pile 37 at a position higher than the upper surface of the foundation slab 300 to be cast on the ground, so that when the foundation slab 300 is poured, the lower end of the top raker S1 And the reinforcement method of the retaining wall using the raker reinforcing structure, characterized in that the lower end of the middle layer raker (S2) has a configuration located above the foundation slab 300 without being buried in the foundation slab 300. According to claim 8,
When installing the middle layer raker (S2) after installing the top layer raker (S1), place the top of the middle layer raker (S2) under the top of the top layer raker (S1) in the same vertical row as the top of the top layer raker (S1), The lower end of the middle raker (S2) is located under the lower end of the uppermost raker (S1) in the same vertical row as the lower end of the uppermost raker (S1), and the lower end of the uppermost raker (S1) and the lower end of the intermediate raker (S2) are integrated. It is integrally coupled to the coupling member 1 to make the top layer raker (S1) and the middle layer raker (S2) disposed in the same vertical row;
The rear end of the integrated coupling member 1 is coupled to the lower horizontal wale 32 of the ground fixing support 30 so that the integrated coupling member 1 is not buried in the foundation slab 300 but above the foundation slab 300 A method of reinforcing a retaining wall using a Raker reinforcing structure, characterized in that it is positioned.

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