Anchoring structure for steel plate concrete walls

Abstract

To provide an anchorage structure of a steel plate concrete wall that can improve the workability while securing high degree of fixation and proof stress capable of bearing an aircraft collision or the like.SOLUTION: An anchorage structure of a steel plate concrete wall anchors an embedded portion 23 to a reinforcing-bar concrete foundation 10 by providing embedded portions 23 embedded into the reinforcing-bar concrete foundation 10 at lower end portions of a pair of steel plates 21 forming wall surfaces of a steel plate concrete wall 20. The embedded portions 23 are a plurality of embedding column bases 23 joined through base plates 24 to each lower end of the steel plates 21. The embedding column bases 23 drop from the base plates 24 so as to be placed between reinforcing-bars 11 arranged in a construction area of the reinforcing-bar concrete foundation 10 at intervals according to the bar arrangement interval of the reinforcing-bars 11.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a fixing structure for a steel plate concrete wall, which includes embedded parts embedded in a reinforced concrete foundation at the lower ends of a pair of steel plates forming the wall surface of the steel plate concrete wall, and fixes the embedded parts to the reinforced concrete foundation.

Background Art

[0002] As the background art of the present invention, for example, in a steel plate concrete reactor containment vessel, when erecting a CV cylindrical wall of a steel plate concrete structure on a foundation mat, a plurality of levels of difference bars are arranged at a predetermined pitch inside and outside the wall body of the CV cylindrical wall and inside the foundation mat with a predetermined fixing length ensured between the CV cylindrical wall and the foundation mat, and ribs welded to the lower ends of the steel plates in the CV cylindrical wall at regular intervals are provided. There is a structure that fixes and supports the leg portion of the CV cylindrical wall to the foundation mat through these ribs (for example, refer to Patent Document 1).

[0003] Also, for example, in a joining structure for joining the wall leg portion of a steel plate concrete wall (steel plate concrete structure) to the upper surface of a foundation slab (concrete structure), a perforated steel plate with a plurality of holes formed at the lower ends of each SC steel plate in the steel plate concrete wall is vertically installed. After inserting the slab bars (reinforcement materials) of the foundation slab into the holes in the uppermost part of the perforated steel plate, concrete is placed, so that the perforated steel plate is embedded in the foundation slab and the wall leg portion of the steel plate concrete wall is joined to the foundation slab (for example, refer to Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] As an anchoring structure for steel plate concrete walls, it is common to employ a reinforced concrete (reinforcement) method in which a steel plate concrete wall (CV cylindrical wall) is fixed to a reinforced concrete foundation (foundation mat) via reinforced concrete, as described in Patent Document 1, for example. However, in recent years, there has been a demand for anchoring structures for steel plate concrete walls that have high load-bearing capacity to withstand excessive impacts such as those caused by aircraft collisions, especially for buildings such as nuclear power plants, thermal power plants, and fuel storage facilities. In response to this demand, it has been considered to adopt an embedded method in which a steel plate concrete wall is joined to a reinforced concrete foundation with perforated steel plates (embedded parts) vertically installed at the lower end of each SC steel plate in the steel plate concrete wall embedded in the reinforced concrete foundation, as described in Patent Document 2, for example.

[0006] However, in the joint structure described in Patent Document 2, embedding the perforated steel plate into the reinforced concrete foundation requires the extra step of inserting the slab reinforcement into the holes of the perforated steel plate when arranging the reinforcement of the reinforced concrete foundation, so there is room for improvement in terms of improving workability.

[0007] In light of these circumstances, the main objective of the present invention is to provide a steel plate concrete wall anchoring structure that can improve constructability while ensuring a high degree of fixation and load-bearing capacity that can withstand aircraft collisions and the like. [Means for solving the problem]

[0008] The first characteristic configuration of the present invention is a steel plate concrete wall anchoring structure in which a pair of steel plates forming the wall surface of the steel plate concrete wall are provided with embedded portions at the lower ends of the steel plates that are embedded in a reinforced concrete foundation, and the embedded portions are anchored to the reinforced concrete foundation, The embedded portion is a plurality of embedded column bases joined to the lower end of each of the steel plates via a base plate. The aforementioned embedded column base is positioned between the reinforcing bars arranged in the construction area of ​​the reinforced concrete foundation, and is suspended from the base plate in a manner that matches the spacing of the reinforcing bars. 、 The aforementioned embedded column base is made of structural steel. It's at a single point.

[0009] According to this configuration, for example, after arranging the reinforcement bars of the reinforced concrete foundation at predetermined intervals in the construction area of ​​the reinforced concrete foundation, each steel plate equipped with multiple embedded column bases is sequentially lifted and positioned in a predetermined location so that each embedded column base passes between the reinforcement bars of the reinforced concrete foundation. In this way, each steel plate can be positioned at the installation location of the steel plate concrete wall with a pair of steel plates facing each other at a predetermined interval. After this positioning, concrete is poured into the construction area of ​​the reinforced concrete foundation to construct the reinforced concrete foundation, thereby embedding each embedded column base within the reinforced concrete foundation. Subsequently, concrete is poured between the pair of steel plates to construct the steel plate concrete wall, thereby integrally joining the steel plate concrete wall to the reinforced concrete foundation with a high degree of fixation and load-bearing capacity, as each embedded column base is embedded and anchored within the reinforced concrete foundation.

[0010] In other words, with this configuration, compared to, for example, the case in which the lower side of each steel plate in a steel plate concrete wall is embedded in a reinforced concrete foundation as an embedded portion, it is possible to join the steel plate concrete wall to the reinforced concrete foundation in a state with high degree of fixation and load-bearing capacity, while eliminating the need for the rebar insertion work that was required in the reinforcement step of the reinforced concrete foundation in the case in the previous case, which involved passing predetermined rebars through multiple through holes provided on the lower side of each steel plate.

[0011] As a result, by adopting an embedded method for anchoring steel plate concrete walls, in which the embedded portion of the steel plate concrete wall is embedded and anchored within a reinforced concrete foundation, it is possible to provide an anchoring structure for steel plate concrete walls that ensures a high degree of fixation and load-bearing capacity that can withstand aircraft collisions, while also improving constructability, thereby shortening the construction period.

[0013] also, According to this configuration, each embedded column base is composed of a shaped steel material such as H-shaped steel or T-shaped steel. While forming the embedded part as a plurality of embedded column bases hanging down from the base plate in an arrangement according to the bar reinforcement spacing, as the cross-sectional area of the embedded part embedded in the reinforced concrete foundation, it is possible to easily secure a cross-sectional area equal to or larger than that in the case where the lower side of the steel plate is used as the embedded part, and to improve the fixing property of the embedded part to the reinforced concrete foundation.

[0014] As a result, while improving the workability as compared with the case where the lower side of each steel plate is embedded in the reinforced concrete foundation as the embedded part, the steel plate concrete wall can be joined to the reinforced concrete foundation in a state having a fixing degree and a bearing strength equal to or higher than those in the case where the lower side of each steel plate is used as the embedded part.

[0015] In the present invention The second characteristic configuration is a steel plate concrete wall anchoring structure in which a pair of steel plates forming the wall surface of the steel plate concrete wall are provided with embedded portions at the lower ends of the steel plates that are embedded in a reinforced concrete foundation, and the embedded portions are anchored to the reinforced concrete foundation, The embedded portion is a plurality of embedded column bases joined to the lower end of each of the steel plates via a base plate. The aforementioned embedded column base is positioned between the reinforcing bars arranged in the construction area of ​​the reinforced concrete foundation, and hangs down from the base plate in a manner that matches the spacing of the reinforcing bars. The steel plate concrete wall is provided with a plurality of rib plates joined across the steel plate and the base plate in the out-of-plane direction of the steel plate.

[0016] According to this configuration, for example, after arranging the reinforcement bars of the reinforced concrete foundation at predetermined intervals in the construction area of ​​the reinforced concrete foundation, each steel plate equipped with multiple embedded column bases is sequentially lifted and positioned in a predetermined location so that each embedded column base passes between the reinforcement bars of the reinforced concrete foundation. In this way, each steel plate can be positioned at the installation location of the steel plate concrete wall with a pair of steel plates facing each other at a predetermined interval. After this positioning, concrete is poured into the construction area of ​​the reinforced concrete foundation to construct the reinforced concrete foundation, thereby embedding each embedded column base within the reinforced concrete foundation. Subsequently, concrete is poured between the pair of steel plates to construct the steel plate concrete wall, thereby integrally joining the steel plate concrete wall to the reinforced concrete foundation with a high degree of fixation and load-bearing capacity, as each embedded column base is embedded and anchored within the reinforced concrete foundation. In other words, with this configuration, compared to, for example, the case in which the lower side of each steel plate in a steel plate concrete wall is embedded in a reinforced concrete foundation as an embedded portion, it is possible to join the steel plate concrete wall to the reinforced concrete foundation in a state with high degree of fixation and load-bearing capacity, while eliminating the need for the rebar insertion work that was required in the reinforcement step of the reinforced concrete foundation in the case in the previous case, which involved passing predetermined rebars through multiple through holes provided on the lower side of each steel plate. As a result, by adopting an embedded method for anchoring steel plate concrete walls, in which the embedded portion of the steel plate concrete wall is embedded and anchored within a reinforced concrete foundation, it is possible to provide an anchoring structure for steel plate concrete walls that ensures a high degree of fixation and load-bearing capacity that can withstand aircraft collisions, while also improving constructability, thereby shortening the construction period. also, According to this configuration, the steel plate concrete wall can be joined to the reinforced concrete foundation while ensuring a higher fixing degree and bearing strength against the out-of-plane bending of the steel plate concrete wall that occurs when an aircraft collides with the steel plate concrete wall or the like.

[0017] In the present invention The third characteristic configuration is a steel plate concrete wall anchoring structure in which a pair of steel plates forming the wall surface of the steel plate concrete wall are provided with embedded portions at the lower ends of the steel plates that are embedded in a reinforced concrete foundation, and the embedded portions are anchored to the reinforced concrete foundation, The embedded portion is a plurality of embedded column bases joined to the lower end of each of the steel plates via a base plate. The aforementioned embedded column base is positioned between the reinforcing bars arranged in the construction area of ​​the reinforced concrete foundation, and hangs down from the base plate in a manner that matches the spacing of the reinforcing bars. The embedded column base has a feature that a plurality of studs are joined in a horizontal posture.

[0018] According to this configuration, for example, after arranging the reinforcement bars of the reinforced concrete foundation at predetermined intervals in the construction area of ​​the reinforced concrete foundation, each steel plate equipped with multiple embedded column bases is sequentially lifted and positioned in a predetermined location so that each embedded column base passes between the reinforcement bars of the reinforced concrete foundation. In this way, each steel plate can be positioned at the installation location of the steel plate concrete wall with a pair of steel plates facing each other at a predetermined interval. After this positioning, concrete is poured into the construction area of ​​the reinforced concrete foundation to construct the reinforced concrete foundation, thereby embedding each embedded column base within the reinforced concrete foundation. Subsequently, concrete is poured between the pair of steel plates to construct the steel plate concrete wall, thereby integrally joining the steel plate concrete wall to the reinforced concrete foundation with a high degree of fixation and load-bearing capacity, as each embedded column base is embedded and anchored within the reinforced concrete foundation. In other words, with this configuration, compared to, for example, the case in which the lower side of each steel plate in a steel plate concrete wall is embedded in a reinforced concrete foundation as an embedded portion, it is possible to join the steel plate concrete wall to the reinforced concrete foundation in a state with high degree of fixation and load-bearing capacity, while eliminating the need for the rebar insertion work that was required in the reinforcement step of the reinforced concrete foundation in the case in the previous case, which involved passing predetermined rebars through multiple through holes provided on the lower side of each steel plate. As a result, by adopting an embedded method for anchoring steel plate concrete walls, in which the embedded portion of the steel plate concrete wall is embedded and anchored within a reinforced concrete foundation, it is possible to provide an anchoring structure for steel plate concrete walls that ensures a high degree of fixation and load-bearing capacity that can withstand aircraft collisions, while also improving constructability, thereby shortening the construction period. also, According to this configuration, the fixing property of the embedded column base to the reinforced concrete foundation can be improved, and thereby, the steel plate concrete wall can be joined to the reinforced concrete foundation in a state where higher fixing degree and bearing strength are ensured.

Brief Description of the Drawings

[0019] [Figure 1] Vertical sectional view of the main part showing the fixing structure of the steel plate concrete wall [Figure 2] Cross-sectional view taken along the arrow II-II in FIG. 1 [Figure 3] Cross-sectional view taken along the arrow III-III in FIG. 2 [Figure 4] (a) is an exploded front view of the steel plate unit in the steel plate concrete wall, (b) is an exploded side view of the steel plate unit in the steel plate concrete wall [Figure 5] (a) is a front view of the steel plate unit in the steel plate concrete wall, (b) is a side view of the steel plate unit in the steel plate concrete wall [Figure 6] Cross-sectional view of the main part showing the fixing structure of the steel plate concrete wall in another embodiment (a form in which the flange of the embedded column base made of H-shaped steel and the steel plate are aligned) [Figure 7] Cross-sectional view taken along the arrow VII-VII in FIG. 6 [Figure 8] Cross-sectional view of the main part showing the fixing structure of the steel plate concrete wall in another embodiment (a form in which the embedded column base is composed of T-shaped steel) [Figure 9] Cross-sectional view taken along the arrow IX-IX in FIG. 8

Modes for Carrying Out the Invention

[0020] Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the steel plate concrete wall anchoring structure according to the present invention is applied to a building where it is desired to have high load-bearing capacity to withstand excessive impacts such as those caused by aircraft collisions, such as power generation facilities and fuel storage facilities, and where the steel plate concrete wall is anchored to a foundation slab, which is an example of a reinforced concrete foundation, will be described based on the drawings. Furthermore, the anchoring structure for steel plate concrete walls according to the present invention is not limited to cases where the steel plate concrete wall is anchored to a foundation slab, but can also be applied when the steel plate concrete wall is anchored to a foundation beam, footing, etc.

[0021] As shown in Figures 1 to 3, the foundation slab 10 illustrated in this embodiment is constructed by placing numerous slab reinforcements (an example of reinforcing bars) 11 in a grid pattern with regular intervals in the vertical and horizontal directions in a plan view, within the construction area 1 of the foundation slab 10 secured at the construction site, and then pouring slab concrete 12.

[0022] The steel plate concrete wall 20 illustrated in this embodiment is constructed by pouring wall concrete 22 between a pair of steel plates 21 that form the wall surface. Each steel plate 21 is provided with a plurality of embedded column bases 23 at its lower end, which are embedded in the slab concrete 12 of the foundation slab 10. The plurality of embedded column bases 23 are joined to the lower end of each steel plate 21 via a base plate 24. Each embedded column base 23 is positioned between the slab reinforcement bars 11 arranged in the construction area 1 of the foundation slab slab 10, and hangs down from the base plate 24 in an arrangement that matches the spacing of the slab reinforcement bars 11, specifically in an arrangement that is an integer multiple of the spacing of the slab reinforcement bars 11. Furthermore, numerous studs (not shown) are welded horizontally to the inner surface of each steel plate 21 in order to structurally integrate the steel plate 21 with the wall concrete 22.

[0023] Each embedded column base 23 is made of an H-shaped steel, which is an example of a structural steel material, and is joined to the base plate 24 in a state where the webs 23a and steel plates 21 are aligned so that the webs 23a are positioned directly below the steel plates 21 in a orientation along the in-plane direction of the steel plate concrete wall 20. Furthermore, the embedded column base 23 is not limited to H-shaped steel, but may also be made of other shaped steel materials such as T-shaped steel, channel steel, or angle steel.

[0024] As shown in Figures 1-5, each embedded column base 23 is configured as a two-part structure that can be divided into a short upper column base 23A that is welded to the base plate 24 and a long lower column base 23B that is bolted to the upper column base 23A. Multiple splice plates 25 for web joining, multiple splice plates 26 for flange joining, and multiple high-strength bolts 27 are used for the bolted joining of the upper column base 23A and the lower column base 23B.

[0025] Each steel plate 21 is unitized as a sub-steel plate unit 28 at the manufacturing plant by welding multiple upper column bases 23A to their lower ends via a base plate 24 (see Figure 4). Each sub-steel plate unit 28 includes multiple rib plates 29 that are joined across the steel plate 21 and the base plate 24 in the out-of-plane direction of the steel plate 21. Each rib plate 29 is positioned directly above each flange 23b of each upper column base 23A.

[0026] Each embedded column base 23 is provided with a plurality of studs 30 extending horizontally from the web 23a of the lower column base 23B in a position parallel to the flange 23b, and a plurality of studs 31 extending horizontally from each flange 23b of the lower column base 23B in a position along the web 23a. Each stud 30, 31 is welded to the web 23a or each flange 23b of each lower column base 23B at a fixed interval in the direction of extension of the lower column base 23B at the manufacturing plant.

[0027] As shown in Figure 5, each sub-steel plate unit 28 is assembled into a steel plate unit 32 at the fabrication site of the construction site by bolting its lower column base 23B to its upper column base 23A via splice plates 25, 26 and high-strength bolts 27.

[0028] The construction procedure for anchoring the steel plate concrete wall 20 to the foundation slab 10 based on the anchoring structure of the steel plate concrete wall 20 according to the present invention is as follows: For example, as shown in Figures 1 to 5, a large number of slab reinforcements 11 are arranged in a grid pattern at predetermined reinforcement intervals in the construction area 1 of the foundation slab 10, and then each steel plate unit 32, which has been pre-unitized at the fabrication site of the construction site, is sequentially lifted using a lifting machine such as a crane (not shown) and positioned at predetermined locations so that each embedded column base 23 passes between the slab reinforcements 11. In this way, each steel plate unit 32 can be positioned at the installation location of the steel plate concrete wall 20 with a pair of steel plates 21 facing each other at a predetermined distance apart.

[0029] After placement, the pair of steel plates 21 are connected via numerous tie bars (not shown) to secure a wall concrete pouring area at a fixed interval between the pair of steel plates 21. Then, slab concrete 12 is poured into the construction area 1 of the foundation slab 10 to construct the foundation slab 10. This allows each embedded column base 23 of each steel plate unit 32 to be embedded within the foundation slab 10. Subsequently, wall concrete 22 is poured between the pair of steel plates 21 to construct the steel plate concrete wall 20. This allows the foundation slab 10 and the steel plate concrete wall 20 to be integrally joined in a state with high fixation and load-bearing capacity, as each embedded column base 23 of the steel plate concrete wall 20 is embedded and anchored within the foundation slab 10.

[0030] In other words, according to the anchoring structure for the steel plate concrete wall 20 of the present invention, compared to, for example, the case in which the lower side of each steel plate 21 in the steel plate concrete wall 20 is embedded in the foundation slab 10 as an embedded portion, the steel plate concrete wall 20 can be joined to the foundation slab 10 in a state with high degree of fixation and load-bearing capacity, while eliminating the need for the slab reinforcement work that was required in the reinforcement work of the foundation slab 10 in the case in the case in which predetermined slab reinforcement 11 is passed through a plurality of through holes provided on the lower side of each steel plate 21.

[0031] As a result, by adopting an embedded method for anchoring the steel plate concrete wall 20, in which the embedded portion (embedded column base 23) of the steel plate concrete wall 20 is embedded and anchored within the foundation slab 10, it is possible to improve constructability and shorten the construction period while ensuring a high degree of fixation and load-bearing capacity that can withstand aircraft collisions and the like.

[0032] Furthermore, since each embedded column base 23 of the steel plate concrete wall 20 is made of H-shaped steel, the embedded portion of the steel plate concrete wall 20 can be made into multiple embedded column bases 23 that hang down from the base plate 24 in an arrangement that matches the spacing of the slab reinforcement 11, while at the same time, it is possible to easily secure a cross-sectional area of ​​the embedded portion that is embedded in the foundation slab 10 that is equivalent to or greater than that when the lower side of each steel plate 21 is used as the embedded portion, and the anchorage of the embedded portion to the foundation slab 10 can be improved.

[0033] This allows the steel plate concrete wall 20 to be joined to the foundation slab 10 with a degree of fixation and load-bearing capacity equivalent to or greater than that when the lower side of each steel plate 21 of the steel plate concrete wall 20 is embedded as an embedded portion within the foundation slab 10, while improving workability.

[0034] Furthermore, the steel plate concrete wall 20 is equipped with multiple rib plates 29 that are joined across the steel plate 21 and the base plate 24 in the out-of-plane direction of each steel plate 21. This ensures a higher degree of fixation and resistance to out-of-plane bending of the steel plate concrete wall 20 that may occur when an aircraft collides with the steel plate concrete wall 20, allowing the steel plate concrete wall 20 to be joined to the foundation slab 10.

[0035] Furthermore, as mentioned above, multiple studs 30, 31 are joined horizontally to each embedded column base 23 of the steel plate concrete wall 20, which improves the anchorage of the embedded column base 23 to the foundation slab 10. This allows the steel plate concrete wall 20 to be joined to the foundation slab 10 with greater fixation and load-bearing capacity.

[0036] Furthermore, when fixing the steel plate concrete wall 20 to the foundation slab 10 at the construction site, prior to this, sub-steel plate units 28 are manufactured at the fabrication plant and multiple studs 30, 31 are joined to each lower column base 23B (see Figure 4). This improves constructability while increasing the manufacturing accuracy of the sub-steel plate units 28 and the joining accuracy of each stud 30, 31 to each lower column base 23B. In addition, since these sub-steel plate units 28 and lower column bases 23B are transported from the fabrication plant to the construction site and then unitized as steel plate units 32 at the fabrication site (see Figure 5), this improves transportability from the fabrication plant to the construction site compared to when the steel plate units 32 are unitized at the fabrication plant before being transported to the construction site. Furthermore, since the unitized steel plate units 32 are lifted at the fabrication site of the construction site and placed at the installation location of the steel plate concrete wall 20 (see Figure 5), the number of lifting operations can be significantly reduced compared to when the sub-steel plate units 28 and the lower column bases 23B are lifted individually. In addition, bolt connections between each upper column base 23A and lower column base 23B of the sub-steel plate units 28 at the construction site can be eliminated, significantly improving constructability.

[0037] [Another embodiment] Another embodiment of the present invention will be described. Furthermore, the configurations of each of the separate embodiments described below are not limited to being applied individually, but can also be applied in combination with the above-described embodiments or other separate embodiments.

[0038] (1) In the above embodiment, the steel plate concrete wall 20 is illustrated in which each of the multiple embedded column bases 23 is made of H-shaped steel, and each embedded column base 23 is joined to the steel plate 21 via a base plate 24 with the webs 23a and steel plate 21 aligned so that their webs 23a are positioned directly below the steel plate 21 in a orientation along the in-plane direction of the steel plate concrete wall 20. However, the embodiment is not limited to this, for example, as shown in Figures 6-7, each embedded column base 23 may be made of H-shaped steel, and each embedded column base 23 may be joined to the steel plate 21 via a base plate 24 with the out-of-plane flange 23b and steel plate 21 aligned so that the flange 23b located on the out-of-plane side of the pair of flanges 23b is positioned directly below the steel plate 21 in a orientation along the in-plane direction of the steel plate concrete wall 20.

[0039] Although not shown in the illustration, the steel plate concrete wall 20 may also be constructed such that each embedded column base 23 is made of H-shaped steel, and each embedded column base 23 is joined to the steel plate 21 via a base plate 24, with the flange 23b located on the inward side in the out-of-plane direction of the steel plate concrete wall 20 positioned directly below the steel plate 21 in a orientation along the in-plane direction of the steel plate concrete wall 20.

[0040] Furthermore, as shown in Figures 8-9, the steel plate concrete wall 20 may be constructed such that each embedded column base 23 is made of T-shaped steel, and the flanges 23b and steel plates 21 are aligned so that the flanges 23b are positioned directly below the steel plate 21 in a orientation along the in-plane direction of the steel plate concrete wall 20, and each embedded column base 23 is joined to the steel plate 21 via a base plate 24.

[0041] (2) In the above embodiment, the steel plate concrete wall 20 is illustrated in which each embedded column base 23 is made of H-shaped steel, and the webs 23a and steel plates 21 are aligned so that the webs 23a are positioned directly below the steel plate 21 in a orientation along the in-plane direction of the steel plate concrete wall 20, and each embedded column base 23 is joined to the steel plate 21 via a base plate 24. However, the embodiment is not limited to this, and for example, the position of the steel plate 21 may be adjusted within the width of the base plate 24 without aligning the steel plate 21 and each embedded column base 23 as described above, thereby constructing the wall to have a desired thickness without changing the spacing of the slab reinforcement 11.

[0042] (3) In the above embodiment, when fixing the multiple embedded column bases 23 provided on each steel plate 21 to the foundation slab (reinforced concrete foundation) 10, in advance, at the fabrication site of the construction site, the lower column bases 23B of each sub-steel plate unit 28 are bolted to each upper column base 23A to form a steel plate unit 32, which is then lifted with a lifting machine and placed at the installation location of the steel plate concrete wall 20. However, the embodiment is not limited to this, for example, at the fabrication site of the construction site, in addition to bolting the lower column bases 23B to each upper column base 23A of each sub-steel plate unit 28, the steel plates 21 of each pair of sub-steel plate units 28 are connected via a number of tie bars or the like to form a steel plate unit 32, which is then lifted with a lifting machine and placed at the installation location of the steel plate concrete wall 20. In this case, the number of times the steel plate unit 32 is lifted and the man-hours at the construction site can be reduced, thereby more effectively improving constructability. [Explanation of Symbols]

[0043] 10. Reinforced concrete foundation (foundation slab) 11. Slab reinforcement (reinforcement bars) 20 Steel plate concrete wall 21 Steel plate 23 Embedded column base 23 (embedded part) 24 base plate 29 Rib Plate 30 studs 31 studs

Claims

1. A steel plate concrete wall anchoring structure comprising a pair of steel plates forming the wall surface of the steel plate concrete wall, each having an embedded portion at the lower end of the plate that is embedded in a reinforced concrete foundation, and the embedded portion being anchored to the reinforced concrete foundation, The embedded portion is a plurality of embedded column bases joined to the lower end of each of the steel plates via a base plate. The aforementioned embedded column base is positioned between the reinforcing bars arranged in the construction area of ​​the reinforced concrete foundation, and hangs down from the base plate in a manner that matches the spacing of the reinforcing bars. An anchoring structure for a steel plate concrete wall, the aforementioned embedded column base being made of shaped steel material.

2. A steel plate concrete wall anchoring structure comprising a pair of steel plates forming the wall surface of the steel plate concrete wall, each having an embedded portion at the lower end of the steel plate plate that is embedded in a reinforced concrete foundation, and the embedded portion being anchored to the reinforced concrete foundation, The embedded portion is a plurality of embedded column bases joined to the lower end of each of the steel plates via a base plate. The aforementioned embedded column base is positioned between the reinforcing bars arranged in the construction area of ​​the reinforced concrete foundation, and hangs down from the base plate in a manner that matches the spacing of the reinforcing bars. A steel plate concrete wall anchoring structure comprising a plurality of rib plates joined to the steel plate and the base plate in the out-of-plane direction of the steel plate concrete wall.

3. A steel plate concrete wall anchoring structure comprising a pair of steel plates forming the wall surface of the steel plate concrete wall, each having an embedded portion at the lower end of the steel plate plate that is embedded in a reinforced concrete foundation, and the embedded portion being anchored to the reinforced concrete foundation, The embedded portion is a plurality of embedded column bases joined to the lower end of each of the steel plates via a base plate. The aforementioned embedded column base is positioned between the reinforcing bars arranged in the construction area of ​​the reinforced concrete foundation, and hangs down from the base plate in a manner that matches the spacing of the reinforcing bars. An anchoring structure for a steel plate concrete wall, in which multiple studs are joined horizontally to the aforementioned embedded column base.

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