Wall structure

Abstract

To provide a wall structure equipped with wooden walls that is excellent in sound insulation, fire resistance, and deformation performance. [Solution] A frame 90 is formed by horizontally mounting a pair of beams, an upper beam 20A and a lower beam 20B, made of RC or SRC, to a pair of left and right columns 10 made of RC or SRC. The upper beam 20A is provided with an RC hanging wall 30 on its lower surface 22, and the lower beam 20B is provided with an RC rising wall 40 on its upper surface 24. A gap G1 extending in the horizontal direction is provided between the hanging wall 30 and the rising wall 40, and a wooden wall 50 is attached to the hanging wall 30 and the rising wall 40 via metal fasteners 60 to form a wall structure 100.

Description

Technical Field

[0001] The present invention relates to a wall structure.

Background Art

[0002] In recent years, with the increasing demand for reducing the environmental impact and the active efforts in environmental consideration, in the construction field, technical development using wood materials effectively has been actively carried out. In wooden buildings, hybrid buildings of wood and steel or concrete, etc., various structural members such as beams, columns, walls, and floors are formed of wood materials. Wood materials are lighter than steel frames and concrete, etc., have a high specific strength, are excellent in workability, and in addition, have high heat insulation properties, a humidity control effect, and furthermore, have an appearance design property created by natural materials. Due to being natural materials, they have few carbon dioxide emissions and have a high effect of reducing the environmental impact load.

[0003] For example, looking at the wall of a building, when the entire wall is constructed only of wood, improvement or enhancement of performance that is a problem for wood such as sound insulation and fire resistance is desired.

[0004] Here, in Patent Document 1, a seismic wall structure in which a wooden wall is installed in a reinforced concrete structure is proposed. In this seismic wall structure, the wooden wall has side wall recesses and side wall protrusions, and these are engaged with the structure side protrusions and structure side recesses provided in the structure.

[0005] On the other hand, in Patent Document 2, a wall structure is proposed. In this wall structure, an RC seismic wall is installed in a column-beam structure, and a wooden seismic wall in which a plurality of wooden plates are arranged horizontally and integrated covers the RC seismic wall and is installed in the column-beam structure.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] The earthquake-resistant wall structure described in Patent Document 1 has problems with sound insulation and fire resistance because the wall is made only of wooden panels, as described above. Furthermore, since the maximum load-bearing capacity can be determined by the splitting of the wooden panels, there are also problems with deformation performance.

[0008] On the other hand, the wall structure described in Patent Document 2 has a two-layer wall structure consisting of RC seismic walls and timber seismic walls throughout the entire interior of the column-beam frame. As a result, the rigidity and load-bearing capacity of the walls become too high, which presents challenges in the deformation performance of the frame, as well as the tendency for uneven rigidity to occur in the overall rigidity of the building.

[0009] This invention has been made in view of the above problems, and aims to provide a wall structure with wooden walls that is excellent in sound insulation, fire resistance, and deformation performance. [Means for solving the problem]

[0010] To achieve the above objective, one embodiment of the wall structure according to the present invention is: The frame is formed by horizontally mounting a pair of upper and lower beams, both made of reinforced concrete (RC) or steel-reinforced concrete (SRC), to a pair of left and right columns. The aforementioned upper beam is fitted with an RC (reinforced concrete) hanging wall on its lower surface. The lower beam is fitted with a reinforced concrete rising wall on its upper surface. A gap extending laterally is provided between the aforementioned hanging wall and the aforementioned rising wall. The wooden wall is attached to the aforementioned hanging wall and the aforementioned rising wall via metal fasteners.

[0011] According to this embodiment, a wall structure with excellent sound insulation, fire resistance, and deformation performance can be formed by providing an RC (Reinforced Concrete) hanging wall on the underside of an upper beam made of RC (Reinforced Concrete) or SRC (Steel Reinforced Concrete), providing an RC rising wall on the upper surface of a lower beam made of RC or SRC, providing a horizontally extending gap between the hanging wall and the rising wall, and attaching a wooden wall to the hanging wall and the rising wall via metal fasteners.

[0012] Furthermore, since RC walls and wooden walls are not installed side-by-side throughout the entire interior of the frame, and there are gaps between the hanging walls and rising walls, there is no risk of the walls becoming too rigid or strong, making it easier to adjust the overall rigidity and strength of the building.

[0013] Furthermore, in a configuration where the wall consists solely of wooden panels, the load-bearing capacity of the wall can be determined by the splitting of the wooden panels, as described above. However, in a configuration like this embodiment, where the wooden wall is attached to the RC (reinforced concrete) hanging wall and rising wall via metal fasteners, the load-bearing capacity of the wall can be determined by the metal fasteners, thus guaranteeing high deformation performance of the wall. As a result of this high deformation performance, redundancy against failure is obtained.

[0014] Here, the gap between the hanging wall and the rising wall, extending horizontally (for example, horizontally), has a length spanning between the pair of columns on the left and right. Its vertical width is set to a size that prevents the hanging wall and the rising wall from coming into contact when the frame deforms during an earthquake, and its size is determined taking into account the sound insulation and fire resistance of the entire wall. In addition to being an open space, this gap may also include forms in which the space is filled with structurally weak materials that do not transmit force, such as expanded polystyrene or glass wool, for example, in places where fire resistance is required.

[0015] Structural plywood and similar materials can be used as the wood paneling that forms the wooden wall. On the other hand, bolts (including lag screw bolts), nails, screws, and the like can be used as metal fasteners.

[0016] In another aspect of the wall structure according to the present invention, the column has a sleeve wall made of RC on its side surface, and a wooden wall is attached to the hanging wall, the rising wall, and the sleeve wall via a metal fixture.

[0017] According to this aspect, since the column has a sleeve wall made of RC on its side surface and the wooden wall is attached to the hanging wall, the rising wall, and the sleeve wall, the wooden wall can be more firmly joined to the structure.

[0018] Another aspect of the wall structure according to the present invention is characterized in that two of the wooden walls are attached to the hanging wall and the rising wall via the fixture in a state of sandwiching the hanging wall and the rising wall.

[0019] According to this aspect, since two wooden walls are arranged in a state of sandwiching the hanging wall and the rising wall, wooden walls are disposed on both sides (both wide surfaces) of the wall structure, resulting in a wall structure with excellent aesthetic design. At the same time, having two wooden walls can further enhance the rigidity of the wall.

[0020] Another aspect of the wall structure according to the present invention is characterized in that the column, the beam, the hanging wall, and the rising wall are made of precast RC or precast SRC.

[0021] According to this aspect, since the column, the beam, the hanging wall, and the rising wall are made of precast RC or precast SRC, the construction efficiency of the structure at the site can be improved, leading to an improvement in the construction efficiency of the wall structure.

[0022] In another aspect of the wall structure according to the present invention, the beam has precast joints at both ends, the column has projecting main bars projecting from its end face, The protruding main reinforcement penetrates through a sleeve provided in the precast joint, and the precast joint is placed on the end face of the column.

[0023] According to this aspect, the protruding main reinforcement protruding from the end face of the column penetrates through the sleeves of the precast joints at both ends of the beam, and the precast joints are placed on the end face of the column, so that the workability at the construction site is excellent, and a wall structure with high assembly accuracy at the joint between the column and the beam can be formed.

[0024] In another aspect of the wall structure according to the present invention, The beam includes protruding main reinforcement protruding from both ends thereof, The column includes protruding main reinforcement protruding from its side surface, The protruding main reinforcements of both are joined via a mechanical joint, and a cast-in-place concrete body for embedding the mechanical joint is provided.

[0025] According to this aspect, a precast RC or precast SRC beam does not have joints at both ends, and the protruding main reinforcement protruding from the end of the beam and the protruding main reinforcement protruding from the side surface of a precast RC or precast SRC column are joined via a mechanical joint, and a cast-in-place concrete body is provided so as to embed the mechanical joint. Thus, the length of the precast RC or precast SRC beam can be made as short as possible compared to the form with joints, and the size of the crane for lifting the beam can be reduced.

[0026] In another aspect of the wall structure according to the present invention, Of the two wooden walls, one wooden wall is fixed in advance to one wide surface of the hanging wall, and the other wooden wall is fixed in advance to the other wide surface of the rising wall. One of the wooden walls is attached to one wide surface of the rising wall via the fastener, and the other wooden wall is attached to the other wide surface of the hanging wall via the fastener.

[0027] According to this embodiment, in a configuration having two wooden walls, both wooden walls are pre-attached to the wide surfaces opposite the hanging wall and the rising wall, respectively. The wooden wall attached to the hanging wall is then attached to the wide surface of the rising wall at site via fasteners, and the wooden wall attached to the rising wall is then attached to the wide surface of the hanging wall at site via fasteners. This allows for the formation of a wall structure with two wooden walls that offers excellent on-site constructability. For example, one wooden wall may be attached to one wide surface of the hanging wall, and the other wooden wall may be attached to the other wide surface of the rising wall. Both are transported to the site in this state, and then moved to the site using a crane or the like and attached to each other. Alternatively, one wooden wall may be attached to one wide surface of the hanging wall and the other wooden wall may be attached to the other wide surface of the rising wall at a site, for example, an assembly yard, and then both are moved to the site installation location and attached to each other.

[0028] Furthermore, in other embodiments of the wall structure according to the present invention, In the aforementioned wooden wall, a recess or groove is provided at a position corresponding to either the hanging wall or the rising wall, and the concrete of the hanging wall or the rising wall fills into the recess or groove to form a shear key. The wooden wall is characterized in that a position corresponding to either the hanging wall or the rising wall is attached to the hanging wall or the rising wall via the fastener.

[0029] According to this embodiment, the concrete of the hanging wall or rising wall fills into a recess or groove in the wooden wall corresponding to either the hanging wall or the rising wall, forming a shear key, and the position in the wooden wall corresponding to the other of the hanging wall or the rising wall is attached to the hanging wall or rising wall via a fastener, thereby improving the shear transmission performance between the wall consisting of the hanging wall, the rising wall and the wooden wall and the beam consisting of the upper beam and the lower beam.

[0030] Furthermore, in other embodiments of the wall structure according to the present invention, The columns, beams, hanging walls, and rising walls are characterized by being made of reinforced concrete (RC) or steel-reinforced concrete (SRC) with cast-in-place concrete.

[0031] According to this embodiment, since the columns, beams, hanging walls, and rising walls are made of reinforced concrete (RC) or steel-reinforced concrete (SRC) with cast-in-place concrete, the entire wall structure can be constructed, for example, by using wooden walls as formwork.

[0032] Furthermore, in other embodiments of the wall structure according to the present invention, The aforementioned fastener is, It is characterized by being either a metal rod for GIR joints or a bolt and nut for tension bolt joints.

[0033] According to this embodiment, by using either a metal rod for GIR (Glued in Rod) joining or a bolt and nut for tension bolt joining as the fastener, a hanging wall or rising wall and a wooden wall can be firmly joined with as few joints as possible. [Effects of the Invention]

[0034] As can be understood from the above explanation, the wall structure of the present invention provides a wall structure with a wooden wall that is excellent in sound insulation, fire resistance, and deformation performance. [Brief explanation of the drawing]

[0035] [Figure 1] This is a front view of an example of a wall structure according to the embodiment. [Figure 2A] This is a view along the line II-II in Figure 1. [Figure 2B] This is a view along the line II-II in Figure 1. [Figure 3] This is a front view of another example of a wall structure according to the embodiment. [Figure 4A] This is a view from arrow IV-IV in Figure 3. [Figure 4B]This is a longitudinal cross-sectional view showing another example of the wall structure according to the embodiment, before assembly. [Figure 5] This is a front view of yet another example of the wall structure according to the embodiment. [Figure 6] This is a view from the line VI-VI in Figure 5. [Figure 7] This is a front view of yet another example of the wall structure according to the embodiment. [Figure 8] This is a perspective view of yet another example of the wall structure according to the embodiment. [Figure 9] This is a perspective view showing yet another example of the wall structure according to the embodiment, before assembly. [Figure 10] This is a perspective view of yet another example of the wall structure according to the embodiment. [Figure 11] This is a perspective view showing yet another example of the wall structure according to the embodiment, before assembly. [Figure 12] This is a perspective view showing yet another example of the wall structure according to the embodiment, before assembly. [Modes for carrying out the invention]

[0036] The wall structure according to the embodiment will be described below with reference to the attached drawings. In this specification and the drawings, substantially identical components may be denoted by the same reference numerals to avoid redundant explanations.

[0037] [Wall structure according to the embodiment] An example of a wall structure according to the embodiment will be described with reference to Figures 1 to 12. Here, Figure 1 is a front view of an example of a wall structure according to the embodiment, and Figures 2A and 2B are both views taken along the line II-II in Figure 1. Figure 3 is a front view of another example of the wall structure according to the embodiment, Figure 4A is a view taken along the line IV-IV in Figure 3, and Figure 4B is a longitudinal cross-sectional view showing the state before assembly of another example of the wall structure according to the embodiment. Figure 5 is a front view of yet another example of the wall structure according to the embodiment, Figure 6 is a view taken along the line VI-VI in Figure 5, and Figure 7 is a front view of yet another example of the wall structure according to the embodiment. Furthermore, Figures 8 and 10 are perspective views of yet another example of the wall structure according to the embodiment, Figure 9 is a perspective view showing the state before assembly of Figure 8, and Figures 11 and 12 are perspective views showing the state before assembly of Figure 10. Except for the columns (precast columns) shown in Figures 8-12 and the beams (precast beams) shown in Figures 9, 11, and 12, the illustration of the reinforcing bars in each RC member is omitted in each figure.

[0038] The wall structure 100 shown in Figure 1 is formed by attaching a pair of wooden walls 50 to a frame 90 which is created by horizontally mounting a pair of reinforced concrete (RC) beams, an upper beam 20A and a lower beam 20B, to a pair of left and right RC columns 10A and 10B. Here, the columns 10A and 10B, as well as the upper beam 20A and lower beam 20B, may all be made of steel-reinforced concrete (SRC).

[0039] The upper beam 20A is equipped with an RC (reinforced concrete) hanging wall 30 on its lower surface 22, and the lower beam 20B is equipped with an RC (reinforced concrete) rising wall 40 on its upper surface 24. A gap G1 is provided between the lower surface 32 of the hanging wall 30 and the upper surface 42 of the rising wall 40, with a vertical width (e.g., vertical) of t1 and extending horizontally (e.g., horizontally).

[0040] Both the hanging wall 30 and the rising wall 40 are integrally formed members with respect to the beam 20, and there is a gap G2 with a width t2 between them and the left and right columns 10.

[0041] Here, the upper beam 20A and the hanging wall 30, which are integral members, and the lower beam 20B and the rising wall 40, which are also integral members, may be precast RC members or precast SRC members, or they may be RC members or SRC members with cast-in-place concrete.

[0042] For example, if the upper beam 20A and the hanging wall 30, and the lower beam 20B and the rising wall 40 are all precast RC members, and these are transported to the site and temporarily installed in the installation position at the site, the left and right column reinforcement bars are placed, and the left and right columns 10A and 10B are constructed as RC members with cast-in-place concrete, a frame 90 consisting of precast RC members and RC members with cast-in-place concrete is formed. If columns, beams, or wooden walls of the upper floor are installed above the upper beam 20A, the upper beam 20A shown in the figure becomes the lower beam of the floor above, so in addition to having a hanging wall 30 on its lower surface 22, the upper beam 20A may also have a rising wall on its upper surface.

[0043] As shown in Figure 2A, the pair of wooden walls 50 are wooden surface materials, and a plurality of counterbore grooves 54 are provided in the wide surface 52 facing the outside of each wooden wall 50, with through holes 55 connecting the bottom of each counterbore groove 54.

[0044] For example, the hanging wall 30 and the rising wall 40, which are precast reinforced concrete members, are each provided with multiple through-holes 35 and 45, and through-holes 55 are provided in each wooden wall 50 at positions corresponding to the through-holes 35 and 45.

[0045] For example, after the frame 90 is constructed on site, wooden walls 50 are installed on both sides of the hanging wall 30 and the rising wall 40 so as to straddle both walls, and double-threaded bolts 60 (an example of a metal fastener) are inserted through the connecting through holes 35 and 55 to position the double-threaded bolts in the counterbore grooves 54 of both wooden walls 50. Washers 62 are then inserted over both screws and tightened with nuts 61, thereby fastening a pair of wooden walls 50 to the hanging wall 30 and the rising wall 40 (through-bolt joint).

[0046] Alternatively, as shown in Figure 2B, a pair of wooden walls 50 are fastened to the hanging wall 30 and the rising wall 40 by pre-embedding tall nuts 63 in both the hanging wall 30 and the rising wall 40, and then screwing bolts 60A (another example of a metal fastener) into the tall nuts 63 from both sides, positioning their ends in the counterbore grooves 54 of both wooden walls 50, and tightening them (tall nut + bolt joint).

[0047] Here, the wooden wall 50 can be made of laminated timber, solid wood, structural plywood, cross-laminated timber (CLT), nail-laminated timber (NLT), dowel-laminated timber (DLT), laminated veneer lumber (LVL), etc.

[0048] In the illustrated example of wall structure 100, a horizontally extending gap G1 is provided between the RC-made hanging wall 30 and the rising wall 40, and the wooden wall 50 is attached to the hanging wall 30 and the rising wall 40 via metal fasteners 60, 60A, thereby forming a wall structure with excellent sound insulation, fire resistance, and deformation performance.

[0049] Furthermore, since there are no RC walls and wooden walls throughout the entire interior of the frame 90, and there is a gap G1 between the hanging wall 30 and the rising wall 40, there is no risk of the wall rigidity or load-bearing capacity becoming too high, making it easier to adjust the rigidity and load-bearing capacity of the entire building.

[0050] Here, the vertical width t1 of the gap G1 is set to a size such that, for example, the hanging wall 30 and the rising wall 40 do not come into contact with each other and be damaged when the frame 90 deforms during an earthquake, and its size is set taking into account the sound insulation and fire resistance of the entire wall.

[0051] Furthermore, the lateral width t2 of the gap G2 is set to a size such that, for example, when the frame 90 deforms during an earthquake, the hanging wall 30 and the rising wall 40 and the left and right columns 10 do not come into contact with each other and are not damaged, and the size is set taking into account the sound insulation and fire resistance of the entire wall.

[0052] Furthermore, because the hanging wall 30 and the rising wall 40 are joined only to the beam 20 and separated from the column 10, the dimensions of the precast RC members can be reduced as much as possible. For example, in the case of a precast RC member in which the hanging wall 30 and the rising wall 40 are joined to both the upper and lower beams 20 and the left and right columns 10, the entire frame becomes a single precast RC member, resulting in extremely large overall dimensions, which can make transportation to the site difficult.

[0053] Furthermore, in the wall structure 100, a pair of wooden walls 50 are installed as exposed structures covering almost the entire interior of the frame 90, resulting in a wall structure with excellent aesthetic appeal. In the illustrated example, the ends of the nuts 61 and bolts 60 housed in each countersunk groove 54 are visible. However, by fitting wooden plugs (not shown) or the like into each countersunk groove 54 so that the nuts 61, etc., are not visible from the outside, the aesthetic appeal of the wooden walls 50 can be further enhanced.

[0054] Although not shown in the illustration, instead of the configuration with a pair of wooden walls 50 shown in the illustration example, a configuration with one wooden wall 50 on one of the wide surfaces of the hanging wall 30 and the rising wall 40 may also be used.

[0055] Next, other examples of wall structures according to the embodiment will be described with reference to Figures 3 and 4A, 4B.

[0056] In the illustrated example, the wall structure 100A consists of two wooden walls 50, one of which is pre-attached to the hanging wall 30, and the other wooden wall 50 is pre-attached to the rising wall 40. At the installation location on site, one wooden wall 50 is attached to the rising wall 40, and the other wooden wall 50 is attached to the hanging wall 30 to form the structure.

[0057] The front view shown in Figure 3 is a view from a direction (direction III in Figure 4A) that allows viewing of the wide surface 52 of the wooden wall 50 that is pre-attached to the hanging wall 30. As a result, the fasteners are not visible from the outside in the area of ​​the wooden wall 50 corresponding to the hanging wall 30, while the fasteners 60 are visible from the outside in the area corresponding to the rising wall 40.

[0058] As shown in Figures 4A and 4B, the hanging wall 30 and the wooden wall 50 pre-attached to the hanging wall 30 are joined by multiple bolts 64, such as lag screw bolts (another example of a metal fastener). For example, when manufacturing in a factory, multiple bolts 64 are fixed in a position protruding from one wide surface of the wooden wall 50, and the hanging wall 30 is manufactured by wrapping the multiple bolts 64 around it. The upper beam 20A is then manufactured to be continuous with the hanging wall 30, thereby manufacturing the upper beam 20A, the hanging wall 30, and one of the wooden walls 50 as a single unit.

[0059] Furthermore, as shown in Figures 4A and 4B, the rising wall 40 and the wooden wall 50 pre-attached to the rising wall 40 are manufactured integrally with the lower beam 20B using the same manufacturing method.

[0060] Multiple insert nuts 67 are embedded in both the hanging wall 30 and the rising wall 40, and the openings of the insert nuts 67 face the wide surfaces of both the hanging wall 30 and the rising wall 40 that do not have the wooden wall 50 pre-installed.

[0061] On the other hand, in the areas of the wooden wall 50 that correspond to the hanging wall 30 and the rising wall 40 that are not pre-installed, mutually communicating counterbore grooves 54 and through holes 55 are provided.

[0062] As shown in Figure 4B, the wall structure 100A is formed by bringing the two units close together in the X1 and X2 directions so that the openings of the insert nuts 67 exposed on the wide surfaces of both the hanging wall 30 and the rising wall 40 are aligned with the corresponding through holes 55, inserting bolts 66 (yet another example of a metal fastener) through the interconnected insert nuts 67, through holes 55 and counterbore grooves 54, and tightening them with nuts 61 via washers 62.

[0063] In the illustrated example wall structure 100A, a gap G1 extending in the horizontal direction (for example, horizontally) is provided between the lower surface 32 of the hanging wall 30 and the upper surface 42 of the rising wall 40, and a gap G2 extending in the vertical direction is provided between the hanging wall 30 and the rising wall 40 and the left and right columns 10.

[0064] In the wall structure 100A, a horizontally extending gap G1 is provided between the RC-made hanging wall 30 and the rising wall 40, and the wooden wall 50 is attached to the hanging wall 30 and the rising wall 40 via metal fasteners 64 and 66, thereby forming a wall structure with excellent sound insulation, fire resistance, and deformation performance.

[0065] Next, with reference to Figures 5 and 6, yet another example of a wall structure according to the embodiment will be described.

[0066] The illustrated wall structure 100B differs from wall structures 100 and 100A in that each of the pair of wooden walls 50A has multiple grooves 57 extending vertically on the wide surface facing the rising wall 40A, concrete is filled into the gap between the pair of wooden walls 50A to produce the rising wall 40A, and a portion of the concrete enters each groove 57 and hardens, forming a shear key 44.

[0067] Each pair of wooden walls 50A is integrally attached to the rising wall 40A via a shear key 44. Counterbore grooves 54 and through holes 55 are provided at positions corresponding to the hanging walls 30, similar to the configuration shown in Figure 2A. Both through holes 55 communicate with the through hole 35 of the hanging wall 30, and a double-threaded bolt 60 is inserted through them and tightened with a nut 61, thereby attaching the wall to the hanging wall 30.

[0068] In the wall structure 100B, a gap G1 extending horizontally (for example, horizontally) is provided between the lower surface 32 of the hanging wall 30 and the upper surface 42 of the rising wall 40A, and a gap G2 extending vertically is provided between the hanging wall 30 and the rising wall 40A and the left and right columns 10.

[0069] In the illustrated example, multiple grooves are provided in the wooden wall 50A at positions corresponding to the rising wall 40A, and a portion of the concrete used to form the rising wall 40A enters each groove to form a shear key 44. However, it is also possible to have multiple grooves provided in the wooden wall at positions corresponding to the hanging wall, and a portion of the concrete used to form the hanging wall enters each groove to form a shear key.

[0070] Furthermore, although the illustrated example shows a wooden wall 50A having multiple vertical grooves 57, the wooden wall may also have multiple block-shaped recesses arranged in an aligned or random pattern, with a portion of the concrete for forming the rising wall filling each recess to form a shear key. In addition, both the shear key shown in the illustrated example and fastening with fasteners may be used in combination. Moreover, both the hanging wall and the rising wall may be equipped with shear keys.

[0071] For example, in the wooden wall 50A, concrete from the rising wall 40A enters into the recess 57 located at a position corresponding to the rising wall 40A, forming a shear key 44. In the wooden wall 50A, a position corresponding to the hanging wall 30 is attached to the hanging wall 30 via a fastener 60. This improves the shear transmission performance between the wall, which consists of the hanging wall 30, the rising wall 40A, and the wooden wall 50A, and the beam, which consists of the upper beam 20A and the lower beam 20B.

[0072] Furthermore, with wall structure 100B, a horizontally extending gap G1 is provided between the RC-made hanging wall 30 and the rising wall 40A, thereby creating a wall structure with excellent sound insulation, fire resistance, and deformation performance.

[0073] Next, with reference to Figure 7, yet another example of a wall structure according to the embodiment will be described.

[0074] The illustrated wall structure 100C differs from wall structure 100, etc., in that RC wing walls 70 are provided on the sides 17 of each of the left and right columns 10, and wooden walls 50 are attached to the hanging wall 30, the rising wall 40, and the left and right wing walls 70.

[0075] Both the hanging wall 30 and the rising wall 40 are sized so as not to interfere with the left and right side walls 70. In addition, a gap G3 with a width of t3 is provided between the side 33 of the hanging wall 30 and the side 43 of the rising wall 40 and the side 76 of the side wall 70. Furthermore, a gap G4 with a width of t4 is provided between the lower surface 22 of the upper beam 20A and the upper surface 72 of the side wall 70, and between the upper surface 24 of the lower beam 20B and the lower surface 74 of the side wall 70.

[0076] These widths t3 and t4 are set to a size that prevents the hanging walls 30 and rising walls 40, the beams 20, and the left and right wing walls 70 from coming into contact with each other and being damaged when the frame 90 deforms during an earthquake, and their size is set taking into account the sound insulation and fire resistance of the entire wall.

[0077] According to wall structure 100C, the wooden wall 50 can be attached to the hanging wall 30, the rising wall 40, and the left and right wing walls 70, thereby allowing the wooden wall 50 to be joined to the frame 90 even more securely.

[0078] Even with wall structure 100C, a horizontally extending gap G1 is provided between the RC-made hanging wall 30 and the rising wall 40, and the wooden wall 50 is attached to the hanging wall 30 and the rising wall 40 via metal fasteners 60, thereby forming a wall structure with excellent sound insulation, fire resistance, and deformation performance.

[0079] Next, with reference to Figures 8 and 9, yet another example of a wall structure according to the embodiment will be described.

[0080] The illustrated wall structure 100D differs from wall structure 100, etc., in that all of its structural components, including the left and right columns 10, the upper and lower beams 20, the hanging wall 30, and the rising wall 40, are made of precast reinforced concrete, and the beams 20 are equipped with joints 25 (precast joints) at both ends.

[0081] Although not shown in the diagram, columns, beams, and wooden walls of the upper floor will be installed above the upper beam 20A. Therefore, when considering the upper floor, the upper beam 20A shown in Figure 8 becomes the lower beam of the floor above. For this reason, in addition to having the hanging wall 30 shown on its lower surface 22, the upper beam 20A may also have a rising wall on its upper surface 24.

[0082] Multiple sleeves 26 are embedded in the joint 25, and the main reinforcement bars of the column (precast column) protrude upward from the upper surface 12 of the column 10 (protruding main reinforcement bars 15).

[0083] Figure 8 shows a state in which joints 25 (precast joints) at both ends of the lower beam 20B (precast beam) on the upper floor are installed in relation to the column 10 (precast column) on the lower floor, and a wall structure 100D is formed above them.

[0084] As shown in Figure 9, the main reinforcement bars 15 of the column 10 on the lower floor penetrate the sleeves 26 of the joints 25 at both ends of the lower beam 20B on the upper floor, and the upper part of the reinforcement bars protrudes further from the upper surface of the joints 25.

[0085] Each column 10 has the lower part of the cantilevered main reinforcement 15 embedded inside, and is equipped with a sleeve (not shown) below the cantilevered main reinforcement 15. The lower surface 14 of the upper floor column 10 is placed on the joint 25 by inserting the cantilevered main reinforcement 15 that further cantilever from the upper surface of the joint 25 into the sleeve (not shown) located below the upper floor column 10 in the X3 direction. Next, the joints 25 at both ends of the upper beam 20A are placed on the upper surface 12 of the column 10 by inserting the multiple cantilevered main reinforcement 15 that cantilever from the upper floor column 10 into each sleeve 26 of the joint 25 in the X4 direction, thereby forming a frame 90 in which all components are made of precast reinforced concrete.

[0086] Each of the hanging wall 30 and the rising wall 40 is provided with multiple through-insert nuts 68, and each through-hole 55 of a pair of wooden walls 50 is connected to the corresponding insert nut 68, and each wooden wall 50 is attached to the hanging wall 30 and the rising wall 40 via fasteners 66 inserted in the X5 direction, thereby forming the wall structure 100D.

[0087] In the wall structure 100D, a gap G1 extending horizontally (for example, horizontally) is provided between the lower surface 32 of the hanging wall 30 and the upper surface 42 of the rising wall 40, and a gap G2 extending vertically is provided between the hanging wall 30 and the rising wall 40 and the left and right columns 10.

[0088] Even with the wall structure 100D, a horizontally extending gap G1 is provided between the RC-made hanging wall 30 and the rising wall 40, and the wooden wall 50 is attached to the hanging wall 30 and the rising wall 40 via metal fasteners 66, thereby forming a wall structure with excellent sound insulation, fire resistance, and deformation performance.

[0089] Next, with reference to Figures 10 to 12, yet another example of a wall structure according to the embodiment will be described.

[0090] The illustrated wall structure 100E differs from wall structure 100D in that it has wing walls 70 on the sides 17 of the left and right columns 10, and all of its structural components, including the left and right columns 10, wing walls 70, upper and lower beams 20, hanging walls 30, and rising walls 40, are made of precast reinforced concrete, and it has cast-in-place concrete bodies 29 between the end faces 27 at both ends of the beams 20 and the sides 17 of the left and right columns 10.

[0091] As shown in Figure 11, the beam 20 is provided with a hanging wall 30 on its lower surface 22 and a rising wall 40 on its upper surface 24.

[0092] Multiple cantilevered main reinforcement bars 18 protrude from the side surface 17 of the column 10, and multiple cantilevered main reinforcement bars 28 protrude from the end surface 27 of the beam 20. The corresponding cantilevered main reinforcement bars 18 and 29 are joined to a mechanical joint 80 such as a coupler in the X8 and X7 directions, and are connected to each other via the mechanical joint 80.

[0093] The hanging wall 30, the rising wall 40, and the wing wall 70 are each provided with multiple through-insert nuts 68, and each through-hole 55 of a pair of wooden walls 50 is connected to the corresponding insert nut 68, and each wooden wall 50 is attached to the hanging wall 30, the rising wall 40, and the wing wall 70 via fasteners 66 inserted in the X9 direction. Then, the cast-in-place concrete body 29 is constructed so as to embed the cantilevered main reinforcement bars 18, 28 and mechanical joints 80 located between the end face 27 of the beam 20 and the side surface 17 of the column 10, thereby forming the wall structure 100E.

[0094] Compared to the beam 20 shown in Figure 8, which has joints 25 at both ends, the beam 20 shown in Figures 10 and 11 does not have joints at both ends. Therefore, the length of the precast RC beam 20 can be made as short as possible, and the heavy machinery used to lift and move the beam 20 can be made smaller.

[0095] Furthermore, as shown in Figure 12, the column 10 may not have a wing wall on its side surface 17. In this configuration as well, the beam 20 and the column 10 are joined by mechanical joints 80 to connect their respective cantilevered main reinforcement bars 28, 18, and the cast-in-place concrete body 29 is constructed by embedding these joints, thereby forming the wall structure 100E shown in Figure 10 (however, the structure in Figure 10 with the wing wall 70 removed).

[0096] In the wall structure 100E, a horizontally extending gap G1 is provided between the RC-made hanging wall 30 and the rising wall 40, and the wooden wall 50 is attached to the hanging wall 30, the rising wall 40 and the wing wall 70 via metal fasteners 66, thereby forming a wall structure with excellent sound insulation, fire resistance, and deformation performance.

[0097] Furthermore, in each of the wall structures 100, 100A, 100B, 100C, 100D, and 100E described above, in addition to the fasteners shown in the illustrations, metal rods for GIR joining may be used as fasteners to join the members together using GIR joining, or bolts and nuts for tension bolt joining may be used to join them using tension bolt joining.

[0098] Other embodiments may be used in which other components are combined with the configurations listed in the above embodiments, and the present invention is not limited in any way to the configurations shown herein. In this regard, modifications can be made without departing from the spirit of the present invention, and can be appropriately determined according to the application form. [Explanation of symbols]

[0099] 10,10A,10B:Column 12: End surface (top surface) 14: End surface (bottom surface) 15: Protruding main reinforcement 17: Side view 18: Protruding main reinforcement 20: Beam 20A: Upper beam (beam) 20B: Lower beam (beam) 22: Bottom surface 24:Top surface 25: Joints (precast joints) 26: Sleeves 27: End face 28: Protruding main reinforcement bars 29: Cast-in-place concrete body 30: Hanging wall 32: Bottom surface 33: Side view 35: Through hole 40,40A: Rising wall 42:Top surface 43: Side view 44: Part (Sea Key) 45: Through hole 50,50A: Wooden wall 52: Wide surface 54: Counterbore groove 55: Through hole 57: Groove 60, 60A, 64, 66: Fasteners 61: Nut 62: Washer 63: High Nut 67, 68: Insert nuts 70:Sleeve wall 72:Top surface 74: Bottom surface 76: Side view 80: Mechanical couplings 90: Frame 100, 100A, 100B, 100C, 100D, 100E: Wall structure G1, G2, G3, G4: Gap

Claims

1. The frame is formed by horizontally mounting a pair of upper and lower beams, both made of reinforced concrete (RC) or steel-reinforced concrete (SRC), to a pair of left and right columns made of RC or SRC. The aforementioned upper beam is fitted with an RC (reinforced concrete) hanging wall on its lower surface. The lower beam is fitted with a reinforced concrete rising wall on its upper surface. A gap extending laterally is provided between the aforementioned hanging wall and the aforementioned rising wall. A wall structure characterized in that a wooden wall is attached to the aforementioned hanging wall and the aforementioned rising wall via metal fasteners.

2. The aforementioned column is equipped with a reinforced concrete wing wall on its side, The wall structure according to claim 1, characterized in that the wooden wall is attached to the aforementioned hanging wall, the aforementioned rising wall, and the aforementioned wing wall via metal fasteners.

3. The wall structure according to claim 1 or 2, characterized in that the two wooden walls are attached to the hanging wall and the rising wall via the fasteners, with the hanging wall and the rising wall sandwiching each other.

4. The wall structure according to claim 1 or 2, characterized in that the column, beam, hanging wall, and rising wall are made of precast reinforced concrete or precast steel-reinforced concrete.

5. The aforementioned beam is equipped with precast joints at both ends. The column is provided with cantilevered main reinforcement extending from its end face, The wall structure according to claim 4, characterized in that the cantilevered main reinforcement passes through the sleeve provided in the precast joint, and the precast joint is placed on the end face of the column.

6. The aforementioned beam is provided with cantilevered main reinforcement extending from both ends thereof. The aforementioned column is equipped with cantilevered main reinforcement bars that protrude from its side, The wall structure according to claim 4, characterized in that the main reinforcing bars of both overhangs are joined to each other via mechanical joints, and a cast-in-place concrete body is provided in which the mechanical joints are embedded.

7. Of the two wooden walls, one wooden wall is pre-fixed to one wide surface of the hanging wall, and the other wooden wall is pre-fixed to the other wide surface of the rising wall. The wall structure according to claim 4, characterized in that one of the wooden walls is attached to one wide surface of the rising wall via the fastener, and the other wooden wall is attached to the other wide surface of the hanging wall via the fastener.

8. In the aforementioned wooden wall, a recess or groove is provided at a position corresponding to either the hanging wall or the rising wall, and the concrete of the hanging wall or the rising wall fills into the recess or groove to form a shear key. The wall structure according to claim 4, characterized in that, of the wooden wall, a position corresponding to the other of the hanging wall and the rising wall is attached to the hanging wall or the rising wall via the fastener.

9. The wall structure according to claim 1 or 2, characterized in that the column, beam, hanging wall, and rising wall are made of reinforced concrete or steel-reinforced concrete with cast-in-place concrete.

10. The aforementioned fastener is, The wall structure according to claim 1 or 2, characterized in that it is either a metal rod for GIR joining or a bolt and nut for tension bolt joining.

Images