Method for constructing a curved wall structure and curved wall structure

Abstract

To provide a construction method of a curved wall structure and the curved wall structure capable of realizing a thin curved wall having an arbitrary curved surface shape in Japan and having good construction efficiency.SOLUTION: The construction method of the curved wall structure includes: installing a plurality of expanded metals 15 each having a curved surface corresponding to a part of the curved surface shape of the curved wall structure on a surface side; constructing a mortar portion 17 having a predetermined thickness by one layer by spraying mortar through a space between many openings of the expanded metal and a vertical bar 13 and a horizontal bar 14 from the surface side to reach an inner formwork 20; and forming the curved shape of the curved wall by embedding the expanded metal, the vertical bar and the horizontal bar in the mortar portion, and finishing a surface of the mortar portion along the curved surface of the expanded metal.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for constructing a curved wall structure having a curved surface shape, and to a curved wall structure. [Background technology]

[0002] In 2006, a commercial facility designed by architect Toyo Ito was constructed in Singapore. Surrounding the building were curved walls, characteristic of Ito's work. To harmonize with these, the roof of the main structure was also curved. Supports were meticulously positioned, their height adjusted to fit the unevenness of the curved surface of the roof, and concrete of that thickness was poured. Leveling and pressing work was then carried out according to the height markers at each point to construct an irregular roof slab. From the curved slab, multiple rows of curved walls designed to flow down to the east and independent rows of curved walls standing parallel to each other on the north side surround the main facility in three dimensions, creating an overall soft image. As shown in Figure 4, this curved wall is constructed with φ245 steel pipes as support columns P, formwork material FP attached to the support columns P, φ30 steel pipes as cross members HP, and two expanded metal sheets E1 and E2 sandwiched between the cross members HP. Fiber-reinforced mortar is sprayed onto the surface with a spray gun GN to form a mortar layer M. Specifically, the backside expanded metal sheet E1 is installed, and then fiber-reinforced mortar is sprayed onto the first mortar layer M1 to embed at least the expanded metal sheet E1. Next, the front-side expanded metal sheet E2 is installed, and fiber-reinforced mortar is sprayed onto the second mortar layer M2 to embed the expanded metal sheet E2. The second mortar layer M2 is then finished with a surface finish SF. Dividing the mortar layer M into two layers, M1 and M2, ensures the fiber-reinforced mortar fills the gap and ensures sufficient cover on both sides of the two expanded metal sheets. The two expanded metal sheets E1 and E2 are reinforcing substrates, and the expanded metal sheet E2 on the surface side also serves as a curved surface forming member (see Non-Patent Document 1).

[0003] The layout of structural elements for a portion of the curved wall described above is shown in Figures 5(a) and 5(b). The support columns are φ245 x 10 steel pipes, installed to form gentle curves in three directions (X, Y, and Z axes) to match the curved wall, and are connected to each floor of the facility with rods to prevent movement due to anticipated external forces. The curved panels that make up the curved wall are made up of three support columns, forming a single curved surface 29.8 m high, which are partially connected horizontally. Using this structural method, a thin curved wall nearly 30 m high and 75 to 85 mm thick was constructed, and it remains the facade of the large commercial facility to this day.

[0004] Patent Document 1 discloses a curved wall consisting of a lightweight aerated concrete molding plate with a curved surface, in which a pair of curved template plates and a partition plate are arranged parallel to each other at a predetermined distance within a cubic formwork, a mesh is inserted into the gap between the curved template plate and the partition plate, and then a mortar slurry mixed with air bubbles and liquid is poured in, and after hardening, the formwork, curved template plate, and partition plate are dismantled to obtain the wall

[0020] . [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-172843 [Non-patent literature]

[0006] [Non-Patent Document 1] Penta Ocean Construction Co., Ltd. HP “VIVOCITY Architectural Work” https: / / www.penta-ocean.co.jp / business / project / pj_story / 006.html Summary of the Invention [Problem to be solved by the invention]

[0007] The curved wall shown in Figure 4 requires two sheets of expanded metal, E1 on the back side, forming the first layer of mortar M1, and then E2 on the front side, forming the second layer of mortar M2, resulting in multiple steps and poor construction efficiency. Furthermore, in Southeast Asia, including Singapore, with the exception of the Philippines and Indonesia, earthquakes are rare, and the curved wall structure shown in Figures 5(a) and (b) is considered structurally sound, consisting of only two structural elements: fiber-reinforced mortar and expanded metal. However, in Japan, further consideration is needed to determine whether the earthquake resistance is sufficient, and there is a possibility that it may not be certified as a building.

[0008] As is clear from FIG. 1 of the curved wall made of lightweight aerated concrete molding plates in Patent Document 1, it has a simple shape with a semicircular curve when viewed from above, and is not applicable to the construction of complex curved surfaces. In addition, a pair of curved mold plates is required, making it unsuitable for on-site construction of large curved walls.

[0009] In view of the problems of the prior art as described above, the present invention aims to provide a method for constructing curved wall structures that can realize irregular, thin curved walls in Japan, and that are highly earthquake-resistant and have good construction efficiency. [Means for solving the problem]

[0010] A method for constructing a curved wall structure to achieve the above object is a method for constructing a curved wall structure having a predetermined curved surface shape, Support columns are installed at predetermined intervals, cross members are arranged vertically at predetermined intervals so as to be supported by the support columns in a horizontal direction, an inner formwork is arranged so as to be supported by the cross members, vertical reinforcement bars of the main reinforcing bars of the curved wall are attached to the cross members and arranged at predetermined intervals, horizontal reinforcement bars are connected to the vertical reinforcement bars and arranged at predetermined intervals, a plurality of expanded metal members each having a curved surface corresponding to a portion of the curved shape are installed on the surface side of the horizontal reinforcement bars, and the plurality of expanded metal members are each deformed by the plurality of curved surfaces so as to have an overall curved surface corresponding to the curved shape, Mortar is sprayed from the surface side through the numerous openings in the expanded metal and the spaces between the vertical and horizontal reinforcement so as to reach the inner formwork, creating a mortar section of a predetermined thickness in one layer, and the expanded metal, vertical reinforcement, and horizontal reinforcement are embedded in the mortar section.The curved shape is formed by finishing the surface of the mortar section so that it conforms to the curved surface of the expanded metal.

[0011] According to this curved wall construction method, support columns, cross members, inner formwork, vertical reinforcement, horizontal reinforcement, and expanded metal are installed in order from the back side. Mortar is then sprayed from the front side through the numerous openings in the expanded metal and the spaces between the vertical and horizontal reinforcement to reach the inner formwork, creating a mortar section of a specified thickness in one layer. This allows the mortar section to be constructed in one layer by spraying mortar through a single sheet of expanded metal. Only one sheet of expanded metal is required, rather than the conventional two, which improves construction efficiency, allows the mortar section to be of a specified thickness, and ensures the necessary strength from the vertical and horizontal main reinforcing bars, allowing for the construction of a relatively tall, thin curved wall. Furthermore, by finishing the surface of the mortar section so that it conforms to the curved surfaces of each expanded metal, any curved shape can be created.

[0012] In the above-mentioned curved wall structure construction method, it is preferable that the horizontal members are positioned between the supporting columns and the vertical reinforcement bars and have a size such that a portion of the horizontal members protrudes from the mortar portion toward the supporting columns. This allows the curved wall to be thinned to a predetermined thickness without being affected by the thickness of the mortar portion, and also allows placement even if the cross-sectional size required for structural design is large.

[0013] It is preferable that the support pillar deformed to correspond to the curved shape is installed at a position corresponding to the curved shape, and the cross member deformed to correspond to the curved shape is attached to the support pillar.

[0014] The longitudinal and transverse muscles are PaIt is preferable that the curved surface of the metal be deformed to correspond to the curved surface of the metal.

[0015] The inner formwork is Pa It is preferable that the inner formwork is deformed to correspond to the curved surface of the metal. The inner formwork is removed from the formwork after the surface of the mortar portion is finished.

[0016] It is preferable that the vertical and horizontal reinforcements are mesh-shaped reinforcing bars that have been pre-assembled into a vertical and horizontal mesh by welding, and then cut to the required dimensions and then placed.

[0017] The mortar is preferably a fiber-reinforced mortar.

[0018] The curved wall structure for achieving the above object is a curved wall structure having a predetermined curved shape, The structure comprises support columns arranged at a predetermined interval, cross members arranged vertically at a predetermined interval so as to be supported horizontally across the support columns, vertical reinforcement bars supported by the cross members and arranged at a predetermined interval, horizontal reinforcement bars connected to the vertical reinforcement bars and arranged at a predetermined interval, a plurality of expanded metal pieces arranged on the surface side of the horizontal reinforcement bars and each having a curved surface corresponding to a part of the curved shape, and a mortar section constructed to a predetermined thickness in one layer with the expanded metal, the vertical reinforcement bars and the horizontal reinforcement bars embedded in it, and the curved shape of the mortar section is formed based on the curved surfaces of the plurality of expanded metal pieces.

[0019] This curved wall structure includes support columns, cross members, vertical and horizontal reinforcement, multiple expanded metal panels, and a mortar section. The mortar section is constructed to a predetermined thickness by embedding the expanded metal, vertical and horizontal reinforcement. This means that only one sheet of expanded metal is required, rather than the conventional two. This allows the mortar section to be of a predetermined thickness, and the necessary strength can be ensured by the vertical and horizontal main reinforcement bars, making it possible to realize a relatively tall, thin curved wall. Furthermore, any curved shape can be constructed based on the curved surfaces of the multiple expanded metal panels.

[0020] In the above curved wall structure, it is preferable that the horizontal members be positioned between the support columns and the vertical reinforcement bars and have a cross-sectional size such that a portion of the horizontal members protrudes from the mortar portion toward the support columns. This allows the curved wall to be thin and of a predetermined thickness without being affected by the thickness of the mortar portion, and also allows placement even if the cross-sectional size required for structural design is large.

[0021] It is preferable that the support pillar, deformed to correspond to the curved shape, is installed at a position corresponding to the curved shape, and the cross member, deformed to correspond to the curved shape, is attached to the support pillar.

[0022] It is also preferable that the vertical and horizontal reinforcements are deformed so as to correspond to the curved surfaces of the plurality of expanded metals. [Effects of the Invention]

[0023] According to the present invention, it is possible to realize thin curved walls of any curved shape in Japan, and to provide a curved wall structure construction method and curved wall structure that are efficient in construction. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 2 is a side cross-sectional view showing a main part of the curved wall structure according to the present embodiment. [Figure 2] FIG. 2 is a front view showing the main part of the curved wall structure of FIG. [Figure 3] 10 is a flowchart for explaining the construction process of the curved wall structure according to this embodiment. [Figure 4] FIG. 10 is a cross-sectional side view of a main part showing a conventional curved wall. [Figure 5] 5A and 5B are a front view and a side view, respectively, of the curved wall of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a side cross-sectional view showing the main part of a curved wall structure according to this embodiment. Fig. 2 is a front view showing the main part of the curved wall structure of Fig. 1.

[0026] As shown in Figures 1 and 2, the curved wall structure 10 of this embodiment comprises support columns 11 arranged at a predetermined interval c, cross members 12 arranged vertically at a predetermined interval d so as to cross the support columns 11 horizontally and be supported, vertical reinforcement 13 attached to the cross members 12 and arranged at a predetermined interval e, horizontal reinforcement 14 connected to the vertical reinforcement 13 and arranged at a predetermined interval f, expanded metal 15 arranged on the surface side of the horizontal reinforcement 14, and a mortar section 17 constructed to a predetermined thickness a in one layer by embedding the expanded metal 15, vertical reinforcement 13, and horizontal reinforcement 14, and the surface 18 of the front mortar section 17 is formed into a predetermined curved shape.

[0027] The vertical reinforcement 13 and horizontal reinforcement 14 constitute the main reinforcing bars of the curved wall and are structural members with a predetermined strength. They can be made from meshed reinforcing bars pre-assembled into a vertical and horizontal mesh by welding. After cutting the meshed reinforcing bars to the required dimensions, the vertical reinforcement 13 and horizontal reinforcement 14 can be installed simultaneously by attaching them to the horizontal members 12 via mortar spacers 19, for example, with binding wires.

[0028] The expanded metal 15 is deformed into an uneven shape so as to have a curved surface that corresponds to part of the curved shape of the curved wall formed by the curved wall structure 10, and the multiple curved surfaces of the multiple expanded metal pieces 15 are integrated to correspond overall to the curved shape of the curved wall. The support columns 11, cross members 12, vertical reinforcement 13, and horizontal reinforcement 14 are also deformed so as to correspond to the curved shape of the curved wall formed by the curved wall structure 10. A part of the curved shape of the curved wall is formed on the surface 18 of the mortar portion 17 based on the curved surfaces of the multiple expanded metal pieces 15. In this way, the expanded metal 15 is not a structural component, but is placed solely to form the curved shape of the curved wall.

[0029] The cross member 12 is made of a steel pipe with a predetermined outer diameter g, is placed on a mounting plate 12a attached to the support column 11, and supports the vertical reinforcement 13 via a spacer 19 with a width j. The cross member 12 is located between the support column 11 and the vertical reinforcement 13, and has a cross-sectional size (outer diameter g) such that a portion of the cross member 12 protrudes from the mortar portion 17 toward the support column 11, but the cross-sectional size is determined in advance by structural calculations. As a result, the cross member 12 is close to the vertical reinforcement 13 via the spacer 19, and a portion of the cross member 12 protrudes from the mortar portion 17 toward the support column 11, so it does not affect the thickness a of the mortar portion 17, and can be placed even if the required cross-sectional size becomes larger as a result of structural calculations.

[0030] As shown in Figure 1, the backside cover thickness h2 is the distance between the front surface of the inner formwork 20 and the vertical reinforcement 13, and the frontside cover thickness h1 is the distance from the expanded metal 15 to the surface 18 of the mortar section 17. The gap b between the mortar section 17 and the support column 11 is calculated as follows: gap b = outer diameter g of the horizontal member 12 + width j of the spacer 19 - backside cover thickness h2. Because the outer diameter g of the horizontal member 12 is larger than the backside cover thickness h2, the specified gap b can be ensured. This mortar section 17 allows for a thin curved wall of a specified thickness a while ensuring the specified cover thicknesses h1 and h2 on the front and back sides. If preliminary structural calculations reveal that the cross-sectional size (outer diameter g) of the horizontal member 12 is too small to achieve the specified gap b, the protruding length of the mounting plate 12a can be increased and the position of the horizontal member 12 on the mounting plate 12a can be adjusted.

[0031] As shown in Figure 1, an inner formwork 20 is attached to the support column P and supported by the cross member 12 to construct the mortar section 17. The inner formwork 20 is configured in a generally curved shape that corresponds to part of the curved shape of the curved wall. The back surface of the mortar section 17 is formed by the inner formwork 20 supported by the cross member 12.

[0032] In addition, the expanded metal 15 is made by machining an iron plate, stainless steel plate, aluminum plate, etc. into a mesh pattern such as a diamond or tortoiseshell shape, and is relatively lightweight, and can be relatively easily deformed into an uneven shape to match part of the curved surface of the curved wall.

[0033] As shown in Figures 1 and 2, the expanded metal 15 is attached to the horizontal reinforcement bars 14 via spacers 16 made of, for example, mortar. Mortar MR can be sprayed toward the inner formwork 20 through the numerous diamond-shaped openings 15a in the expanded metal 15. That is, the mortar MR that passes through the numerous diamond-shaped openings 15a in the expanded metal 15 passes through the spaces between the mesh-like vertical reinforcement bars 13 and the horizontal reinforcement bars 14, as shown by the solid lines in Figure 1, because the spaces (e x f) formed between the mesh-like vertical reinforcement bars 13 and the horizontal reinforcement bars 14 are much larger than the numerous diamond-shaped openings 15a, and reaches and deposits on the inner formwork 20 as shown by the solid lines in Figure 1. Further mortar MR is sprayed and deposited on the surface side of the expanded metal 15 as shown by the dashed lines in Figure 1. This allows the mortar section 17 to be constructed in one layer by spraying mortar through a single sheet of expanded metal 15.

[0034] The dimensions of the curved wall structure shown in Figures 1 and 2 are described below. The vertical and horizontal reinforcement bars 13 and 14 are made of vertical and horizontal mesh reinforcing bars with a diameter of 6 mm and a spacing of 200 mm (spacing e and f). The vertical reinforcement bars of 6 mm are bundled or welded together. The thickness of the curved wall is 75 mm, and the expanded metal 15 is made of a 1.2T / 1.5W: 12W / 30.5LW mesh. The center distance SW of the mesh in the short direction of the expanded metal 15 is 12 mm, and the center distance LW of the long direction of the mesh is 30.5 mm. The vertical and horizontal spacings e and f (200 mm) between the vertical reinforcement bars 13 and the horizontal reinforcement bars 14 are sufficiently large compared to the size of the openings 15a. The cross members 12 are steel pipes with a diameter of 76.3 mm x 3.2 mm and a spacing d, respectively, and the support columns 11 are steel pipes with a diameter of 216.3 mm x 8.0 mm and a spacing c, respectively. These dimensions are merely examples and may be changed as appropriate depending on design conditions.

[0035] Based on the above example, when considering both seismic and wind loads for constructing a curved wall 20 meters or higher in Japan, it was found that wind load, not seismic load, is the structural element that needs to be considered most, particularly in Tokyo. Calculations of wind loads under the following conditions showed that the required amount of reinforcement was met, and the bending stress σb of the cross member 12 was σb / fb < 1.0, which is less than the allowable short-term allowable bending stress fb. The bending stress σb and axial stress σc of the support column 11 were σb / fb + σc / fc < 1.0, which is less than the allowable short-term allowable bending stress fb and short-term allowable compressive stress fc, respectively. Wind load: Standard Law Notification No. 1458 Wind pressure for exterior wing Location: Tokyo Classification: Ground surface roughness classification III, height: H=29.8m Standard wind speed determined by each city / town / village: Vo = 34 m / s

[0036] Next, construction steps S01 to S14 for the curved wall structure 10 according to this embodiment will be described with reference to Figures 1 to 3. Figure 3 is a flowchart for explaining the construction steps for the curved wall structure according to this embodiment.

[0037] The required number of expanded metal sheets (Exp. Metal) 15 shown in Figures 1 and 2 are prepared, and each expanded metal sheet 15 is processed into an uneven curved surface according to part of the curved surface shape of the corresponding curved wall (S01). Each expanded metal sheet 15 undergoes inspection and approval for dimensions, curved surface shape, etc., and is then numbered and packaged (S02) before being transported to the curved wall construction site (S03).

[0038] At the curved wall construction site, the required number of support columns 11 are erected (S04) and connected to the facility body such as a building (S05). Next, multiple cross members 12 are placed on and attached to mounting plates 12a supported by the support columns 11 (S06).

[0039] Next, the inner formwork 20 is assembled on the back side so that it is supported by the cross members 12 (S07). Next, a mesh reinforcing bar, in which the vertical reinforcement 13 and the horizontal reinforcement 14 are integrated, is attached via a mortar spacer 19 and fixed to the cross members 12 with binding wire, wire, or the like (S08).

[0040] Next, each of the transported expanded metals 15 is attached to the horizontal reinforcement 14 via a mortar spacer 16 (S09).

[0041] After the blending ratio of the fiber reinforced mortar is confirmed (S10), the fiber reinforced mortar is manufactured in a manufacturing plant using that blending ratio (S11), and then, as shown in Figure 1, the fiber reinforced mortar MR is sprayed using a spray gun GN toward each expanded metal 15 so as to reach the inner formwork 20 (S12). In this way, a mortar portion 17 is constructed in one layer.

[0042] Next, the surface 18 of the mortar portion 17 is subjected to surface finishing using a trowel press or the like (S13). As a result, the surface 18 forms part of the curved shape of the curved wall. Next, after the required strength of the sprayed mortar is confirmed, the inner formwork 20 on the back side is removed (S14).

[0043] As described above, according to the method for constructing the curved wall structure 10 of this embodiment, the support columns 11, cross members 12, inner formwork 20, vertical reinforcement 13, horizontal reinforcement 14, and expanded metal sheet 15 are installed in this order from the rear side. Fiber-reinforced mortar MR is then sprayed from the front side through the numerous openings 15a in the expanded metal sheet 15 and through the spaces between the vertical reinforcement 13 and horizontal reinforcement 14 until it reaches the inner formwork 20, thereby constructing the mortar section 17 in a single layer with a predetermined thickness a. This allows the mortar section 17 to be constructed in a single layer by spraying mortar through one sheet of expanded metal. Furthermore, only one sheet of expanded metal sheet 15 is required, rather than two as in the conventional method. This improves construction efficiency, allows the mortar section 17 to be constructed to the predetermined thickness a, and ensures the necessary strength from the main reinforcing bars, the vertical reinforcement 13 and horizontal reinforcement 14, thereby enabling the construction of a relatively tall, thin curved wall. Furthermore, the surface of the mortar section 17 can be finished to fit the curved surfaces of each expanded metal sheet 15, thereby forming a desired curved shape.

[0044] Even when only one piece of expanded metal is installed, a gently curved surface can be formed. By adjusting the dimensions of the mortar spacer 16, the installation position of the expanded metal in the thickness direction can be appropriately set, resulting in a uniform and smooth finished surface.

[0045] In this embodiment, the curved surface shape of the curved wall is not particularly limited, and any arbitrary shape of curved wall can be constructed. For example, a curved wall as shown in Figure 5(a) and (b) can be constructed, and as shown in the same figure, openings or cutouts of any shape can be provided in the curved wall.

[0046] Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to these, and various modifications are possible within the scope of the technical concept of the present invention. For example, in this embodiment, the cross members 12 are made of cylindrical steel pipes, but the present invention is not limited to this, and they may be made of, for example, square steel pipes, C-shaped steel, angle steel, etc., as long as the shape and dimensions provide the required section modulus.

[0047] In this embodiment, the vertical stripes 13 and horizontal stripe 1 4 However, the present invention is not limited to this, and for example, the vertical reinforcement 13 and the horizontal reinforcement 14 may be arranged separately. [Industrial Applicability]

[0048] According to the present invention, curved walls that are thin and have irregular curved shapes and can withstand earthquake loads and wind loads can be constructed efficiently in Japan, so that curved walls designed to create aesthetically pleasing appearances can be constructed at relatively low cost. [Explanation of symbols]

[0049] 10 Curved wall structure 11 Support pillar 12 Cross member 12a Mounting plate 13 Vertical Stripes 14 Horizontal stripes 15 Expanded Metal 15a opening 16 spacer 17 Mortar Section 18 Mortar surface 20 Inner formwork GN spray gun MR fiber reinforced mortar a Thickness of the curved wall b Gap between the mortar part and the support column c. Support column spacing d Spacing between cross members e. Spacing of vertical bars f Spacing of horizontal bars g Outer diameter of cross member h1,h2 Cover thickness

Claims

1. 1. A method for constructing a curved wall structure having a predetermined curved shape, comprising: Support columns are installed at predetermined intervals, Cross members are arranged at predetermined intervals in the vertical direction so as to be supported by the support columns in a horizontal direction, An inner formwork is arranged so as to be supported by the cross member, The vertical reinforcement of the main reinforcement of the curved wall is attached to the horizontal member and arranged at predetermined intervals, Horizontal stripes are connected to the vertical stripes and arranged at predetermined intervals, A plurality of expanded metals each having a curved surface corresponding to a part of the curved surface shape are installed on the surface side of the horizontal reinforcement, the plurality of expanded metals are each deformed by the plurality of curved surfaces so as to have an overall curved surface corresponding to the curved surface shape, Mortar is sprayed from the surface side through the numerous openings in the expanded metal and the spaces between the vertical reinforcement and the horizontal reinforcement so as to reach the inner formwork, thereby constructing a mortar section of a predetermined thickness in one layer, and the expanded metal, the vertical reinforcement, and the horizontal reinforcement are embedded in the mortar section, A method for constructing a curved wall structure, comprising: forming the curved shape by performing a surface finishing of the mortar portion so as to follow the curved surface of the expanded metal.

2. 2. A method for constructing a curved wall structure as described in claim 1, wherein the cross member is located between the support column and the vertical reinforcement and has a cross-sectional size such that a portion of the cross member extends beyond the mortar portion toward the support column.

3. The support pillars deformed to correspond to the curved surface shape are installed at positions corresponding to the curved surface shape; The method for constructing a curved wall structure according to claim 1 or 2, wherein the cross members are deformed to correspond to the curved shape and attached to the support columns.

4. 4. The method for constructing a curved wall structure according to claim 1, wherein the vertical reinforcement and the horizontal reinforcement are deformed to correspond to the curved surface of the expanded metal.

5. 5. The method for constructing a curved wall structure according to claim 1, wherein the inner formwork is deformed to correspond to the curved surface of the expanded metal.

6. 6. A method for constructing a curved wall structure according to claim 1, wherein the vertical and horizontal reinforcements are mesh-shaped reinforcing bars pre-assembled into a vertical and horizontal mesh by welding, which are then cut to the required dimensions and then arranged.

7. 7. The method for constructing a curved wall structure according to claim 1, wherein the mortar is a fiber-reinforced mortar.

8. A curved wall structure having a predetermined curved shape, Support columns arranged at predetermined intervals; Cross members arranged at predetermined intervals in the vertical direction so as to be supported by the support columns and cross the horizontal direction; Vertical reinforcement bars supported by the cross members and arranged at predetermined intervals; Horizontal reinforcements connected to the vertical reinforcements and arranged at predetermined intervals; a plurality of expanded metals arranged on a surface side of the horizontal reinforcement and each having a curved surface corresponding to a part of the curved surface shape; The expanded metal, the vertical reinforcement, and the horizontal reinforcement are embedded in a mortar section constructed to a predetermined thickness in one layer, A curved wall structure in which the mortar portion has a curved shape based on each curved surface of the plurality of expanded metals.

9. The curved wall structure according to claim 8, wherein the cross member is located between the support column and the vertical reinforcement and has a cross-sectional size such that a portion of the cross member extends beyond the mortar portion toward the support column.

10. the support pillars deformed to correspond to the curved surface shape are installed at positions corresponding to the curved surface shape, 10. The curved wall structure according to claim 8, wherein the cross members are deformed to correspond to the curved shape and attached to the support columns.

11. The curved wall structure according to any one of claims 8 to 10, wherein the vertical reinforcement and the horizontal reinforcement are deformed so as to correspond to the curved surfaces of the plurality of expanded metals.

Images