Exposed wooden partition wall

Abstract

To provide an exposed wood-framed partition wall that can have fire resistance performance that meets standards required for a main structural part and fire resistance and sound insulation performance that meets standards required for a partition wall, despite the wood material is used in an exposed state.SOLUTION: There are provided a reinforced concrete or steel-framed reinforced concrete post-and-beam frame 2 provided at the boundary between two adjacent dwelling units U1 and U2 in a housing complex, and a wall material 5 that is surrounded by the post-and-beam frame 2 on four sides and divides the two dwelling units U1 and U2. The wall material 5 comprises a pair of thick wooden face plates 1, a pair of fire resistance materials 3, and a sound-absorbing material 4. The pair of thick wooden face plates 1 is located at the outermost side of the wall material 5 in the thickness direction and is exposed to each of the two dwelling units U1 and U2. The pair of fire resistance materials 3 is spaced from each other in the thickness direction of the wall material 5 between the pair of thick wooden face plates 1. A sound-absorbing material 4 is provided between the pair of fire resistance materials 3.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a timber exposed door jamb wall in which timber is exposed and used.

Background Art

[0002] In recent years, the use of timber in buildings has been demanded in order to contribute to the achievement of carbon neutrality and the prevention of global warming. When using a wood-based thick panel material such as CLT (Cross Laminated Timber) or LVL (Laminated Veneer Lumber) for the wall, which is a main structural part, depending on the use, scale or region of the building, a certain fire resistance performance is required. FIG. 1 is a longitudinal sectional view of a conventional wall using a wooden building member. FIG. 1(A) shows a conventional fireproof wall 100, and FIG. 1(B) shows a conventional door jamb wall 110 that satisfies fire resistance and sound insulation performance. Generally, as shown in FIG. 1(A), fire resistance is ensured by covering the wood-based thick panel material 102 with a fireproof material 101 such as reinforced gypsum board. Such a wooden building member is disclosed in, for example, Patent Document 1.

[0003] In addition, in apartment houses, the door jamb wall that partitions adjacent households is often a shear wall. In that case, not only the fire resistance required as a main structural part but also the fire resistance to prevent the spread of fire to adjacent households is required. Further, the door jamb wall also requires sound insulation performance. Therefore, when using the wood-based thick panel material 102 for the door jamb wall 110, in addition to covering the wood-based thick panel material 102 with a fireproof material 101 such as gypsum board as shown in FIG. 1(B), a sound insulation space or a sound absorbing material 103 is arranged under the fireproof material 101.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the aforementioned buildings where wood-based thick paneling is covered with fire-resistant material, carbon sequestration is possible, but the other advantage of wood—its soft and warm feel—which enhances the comfort of living spaces, cannot be utilized. Therefore, there was a need for partition walls that used exposed wood so that residents could feel the warmth of the wood.

[0006] This invention was devised to solve the problems described above. In other words, the object of this invention is to provide a wooden partition wall that, despite using exposed wood, can have fire resistance performance that meets the standards required for a main structural component, and fire resistance performance and sound insulation performance that meet the standards required for a partition wall. [Means for solving the problem]

[0007] According to the present invention, a column-beam frame made of reinforced concrete or steel-reinforced concrete is provided at the boundary between two adjacent dwelling units in an apartment building, It comprises a wall material that separates two dwelling units, surrounded on all four sides by the column and beam frame, The wall material comprises a pair of wood-based thick panel panels located on the outermost side in its thickness direction and exposed to each of the two dwelling units, A pair of fire-resistant materials are provided between the pair of wood-based thick panel materials, spaced apart from each other in the thickness direction, A wooden partition wall is provided, having a sound-absorbing material or an air layer for sound insulation provided between a pair of fire-resistant materials. [Effects of the Invention]

[0008] According to the present invention described above, since the wall material, with its outermost thick wood-based panel, is surrounded on all four sides by a column and beam frame made of reinforced concrete or steel-reinforced concrete, even if the wall material is destroyed by fire, the remaining column and beam frame will prevent the building from collapsing. In other words, the exposed wooden partition wall of the present invention can meet the fire resistance standards required for a main structural component even without covering the wood-based thick panel material with fire-resistant material. Therefore, the exposed wooden partition wall can use the wood-based thick panel material in an exposed state while still meeting fire resistance requirements.

[0009] Furthermore, according to the present invention, the wall material has a pair of wood-based thick panel panels on the outermost part in the thickness direction of the wall material so as to be exposed to each of the two dwelling units, and between the pair of wood-based thick panel panels there is a fire-resistant material and a sound-absorbing material or an air layer for sound insulation. As a result, the exposed wood partition wall not only possesses sufficient fire resistance and sound insulation performance to meet the standards required for partition walls, but also provides a comfortable living space where the soft and warm feel of wood can be felt by using wood-based thick paneling in an exposed manner. In other words, the exposed wood partition wall of the present invention can simultaneously have the effect of possessing the fire resistance and sound insulation performance required for partition walls, and the effect of being able to use wood-based thick paneling in an exposed manner. [Brief explanation of the drawing]

[0010] [Figure 1] This is a vertical cross-section of a conventional wall made with wooden building materials. [Figure 2] This is a vertical cross-sectional view of the exposed wooden partition wall of the first embodiment. [Figure 3] This is a vertical cross-sectional view showing the fire resistance performance of the exposed wooden partition wall of the first embodiment. [Figure 4] This is a front view of the exposed wooden partition wall of the first embodiment, as seen from the interior side. [Figure 5] This is an enlarged view of section A in Figure 4, where the wooden panel is cut vertically along a plane parallel to the front, allowing the inside of the hole to be seen. [Figure 6] This is an explanatory diagram of the resistance mechanism of the exposed wooden partition wall in the first embodiment. [Modes for carrying out the invention]

[0011] Hereinafter, embodiments of the present invention will be described based on the drawings. In the drawings, the same reference numerals are given to the common parts in each figure, and duplicate explanations are omitted.

[0012] (First Embodiment) FIG. 2 is a longitudinal sectional view of the wooden-finished door partition wall 10 according to the first embodiment, taken along the arrow. In this figure, 1 is a wooden thick plate surface material, 2 is a column-beam frame, 2A is a column, 2B is a beam, 10 is a wooden-finished door partition wall, 22 is a hole, 23 is the inner cavity of the hole, 30 is a connector, 31 is a gusset plate, and 34 is a high-tension bolt. Also in FIG. 2, U1 represents the dwelling unit on the left side of the wooden-finished door partition wall 10, and U2 represents the dwelling unit on the right side of the wooden-finished door partition wall 10.

[0013] The wooden-finished door partition wall 10 illustrated in the figure is a door partition wall provided between adjacent dwelling units in an apartment house. Generally, when using the wooden thick plate surface material 1 for the wall which is a main structural part, depending on the use, scale or region of the building, a certain fire resistance performance is required. Moreover, when using the wooden-finished door partition wall 10 as a door partition wall, in addition to the standard fire resistance performance required as a main structural part, the standard fire resistance performance and sound insulation performance required as a door partition wall for preventing the spread of fire to adjacent dwelling units are also required.

[0014] The wooden-finished door partition wall 10 of the present embodiment includes a column-beam frame 2 and a wall material 5. The column-beam frame 2 is a structure composed of columns 2A and beams 2B made of reinforced concrete (hereinafter referred to as RC structure) or steel frame reinforced concrete (hereinafter referred to as SRC structure). The column-beam frame 2 of the present embodiment is provided along the boundary between two adjacent dwelling units U1 and U2 in an apartment house. The wall material 5 is surrounded by the column-beam frame 2 on its four sides and partitions the two dwelling units U1 and U2 inside the column-beam frame 2. The wall material 5 has a pair of wooden thick plate surface materials 1, a pair of fire-resistant materials 3, and a sound-absorbing material 4.

[0015] As shown in this figure, a pair of thick wooden face materials 1 are arranged on the outermost side in the thickness direction of the wall material 5 (the indoor side of the living units U1 and U2). Since the pair of thick wooden face materials 1 are in this position, the wood texture of the thick wooden face materials 1 is exposed to each of the two living units U1 and U2. The method of finishing in a state where the structural wood can be seen like this is called "showing wood".

[0016] A pair of fireproof materials 3 and sound-absorbing materials 4 are provided between the pair of thick wooden face materials 1. A pair of fireproof materials 3 are provided, and they are installed between the two thick wooden face materials 1 with a gap in the thickness direction of the wall material 5. The fireproof material 3 may be, for example, a gypsum board.

[0017] A sound-absorbing material 4 and a base material not shown in the figure are arranged between the pair of fireproof materials. The sound-absorbing material 4 may be, for example, a glass wool board. Or, instead of arranging the sound-absorbing material 4, a gap for sound insulation may be arranged as an air layer. Also, although the base material does not appear in the cross-section of this figure, it may be arranged, for example, between the pair of fireproof materials 3 and on the back side of the paper surface from the sound-absorbing material 4. With this configuration, the cross-sectional structure of the wall material 5 is a laminated structure arranged in the order of the thick wooden face material 1, the fireproof material 3, the sound-absorbing material 4 (or air layer), the fireproof material 3, and the thick wooden face material 1.

[0018] Thereby, the two adjacent living units U1 and U2 are completely separated by the fireproof material 3 and the sound-absorbing material 4. Therefore, since the wood-appearing door boundary wall 10 has the fireproof material 3 and the sound-absorbing material 4 between the two thick wooden face materials 1, even if the thick wooden face material 1 is used in the wood-appearing manner, the fire resistance and sound insulation performance can be ensured.

[0019] Figure 3 is a longitudinal sectional view of the wood-appearing door boundary wall 10 of the first embodiment showing the fire resistance, taken along the arrow in the longitudinal section. Figure 3 is a longitudinal sectional view taken along the arrow at the same position as Figure 2. For example, if a fire were to occur in dwelling unit U2 on the right side of Figure 3, even if the thick wooden panel 1 on the right side of the figure were to burn, the remaining wall material 5 would not be destroyed. In other words, the fire-resistant material 3 and column / beam frame 2 on the right side of the figure prevent the fire from spreading to the left, so the pair of fire-resistant materials 3, the sound-absorbing material 4 and base material between them, and the thick wooden panel 1 on the left side remain unburned.

[0020] Therefore, the exposed wooden partition wall 10 can prevent the spread of fire to the adjacent door with the fire-resistant material 3 on the back of the thick wooden panel 1, so even if the thick wooden panel 1 is used in an exposed state, it can have the fire-resistant performance required for a partition wall. Furthermore, even if the thick wooden panel 1 of dwelling unit U2 on the right side of the diagram is destroyed by fire, the thick wooden panel 1 facing dwelling unit U1 on the left side remains unburned, allowing the exposed wooden partition wall 10 to maintain its seismic resistance as a load-bearing wall. Therefore, until the thick wooden panel 1 on the right side is replaced during the restoration work, the exposed wooden partition wall 10 will function as a load-bearing wall thanks to the unburned thick wooden panel 1 of dwelling unit U1 on the left side. In addition, the sound-absorbing material 4 is contained between the pair of fire-resistant materials 3 and does not burn, so the sound insulation performance of the exposed wooden partition wall 10 can also be maintained.

[0021] Thus, even when the exposed wooden partition wall 10 uses wood-based thick panel material 1 in an exposed state, it can still possess the fire resistance and sound insulation performance required for a partition wall.

[0022] Figure 4 is a front view of the exposed wooden partition wall 10 of the first embodiment as seen from the interior side of dwelling units U1 and U2. In this figure, 1 represents a thick wooden panel, 2 represents a column-beam frame, 2A represents a column, 2B represents a beam, 10 represents an exposed wooden partition wall, 20 represents a wooden panel, 21 represents a notch, 22 represents a hole, 23 represents the cavity of the hole, 30 represents a connector, and 31 represents a gusset plate.

[0023] Generally, in apartment buildings, the partition walls between adjacent units are often designed as load-bearing walls. The exposed wooden partition wall 10 of this embodiment is characterized by a configuration in which the four sides of the wall material 5, which includes a pair of thick wooden panel materials 1, are surrounded by columns 2A and beams 2B made of reinforced concrete (RC) or steel-reinforced concrete (SRC). The column-beam frame 2 consists of columns 2A and beams 2B made of RC or SRC that constitute the framework of the apartment building. The exposed wooden partition wall 10 surrounds the wooden thick panel material 1 with a highly fire-resistant RC or SRC column and beam frame 2. This ensures that even if the wooden thick panel material 1 is destroyed by fire, the RC or SRC columns 2A and beams 2B maintain the building's structure and prevent collapse. As a result, the exposed wooden partition wall 10 possesses sufficient fire resistance to meet the standards required for a main structural component, even if the wooden thick panel material 1 is not covered with fire-resistant material 3, allowing the wooden thick panel material 1 to be used in an exposed state.

[0024] The wood-based thick panel material 1 is made of CLT (cross-laminated timber) or LVL (laminated veneer lumber). CLT is a wood-based panel material made by bonding layers of sawn boards or small timbers together so that the direction of the boards is perpendicular to that of each layer. LVL is a wood-based panel material made by laminating and bonding veneers with the fiber direction aligned. Both CLT and LVL are characterized by high seismic resistance and fire resistance. Therefore, by using CLT and LVL, the exposed wood partition wall 10 of this embodiment can obtain high seismic resistance and fire resistance.

[0025] The wood-based thick panel surface 1 of this embodiment may be composed of multiple wood panels 20, as shown in the figure. In that case, multiple wood panels 20 are arranged flush with each other in the horizontal direction when viewed from the interior side, thereby forming one wood-based thick panel surface 1. In this figure, four wood panels 20 are adjacent to each other in a horizontal arrangement. For example, if the wood-based thick panel surface 1 is CLT, and the direction of the exposed boards on the interior surface is vertical as shown in the figure, the boundaries between adjacent wood panels 20 blend in with the boundaries of the sawn boards within the CLT. This makes the wood-based thick panel surface 1 appear as if it is composed of a single large sheet of CLT. Furthermore, the wood-based thick panel material 1 of the exposed wood partition wall 10 in this embodiment may be a single large sheet of CLT or LVL, and the four sides of the large sheet of wood-based thick panel material 1 may be connected to the column and beam frame 2 with connecting hardware.

[0026] As shown in Figure 4, when the wood-based thick panel surface material 1 is composed of multiple wood panels 20, it is preferable that each wood panel 20 is sized to be light enough to be installed by hand. For example, it is preferable that the wood-based thick panel surface material 1 be shaped to a size that weighs 150 kg or less. In this case, the size of the wood-based thick panel surface material 1 is, for example, 1200 mm in width, 2400 mm in height, and 100 mm in thickness. This allows the thick wooden panel 1 to be easily replaced manually without the need for large lifting equipment, in the event that it is destroyed or damaged by fire or other incidents.

[0027] Figure 5 is an enlarged view of section A of Figure 4, where the wooden panel 20 is cut vertically in a plane parallel to the front so that the inside of the hole 22 is visible. In this figure, 2A is a column, 2B is a beam, 6 is the gap between the wooden panel 20 and the column-beam frame 2, 20 is the wooden panel, 20a is the slope, 20b is the top surface, 20c is the side surface, 21 is the notch, 22 is the hole, 23 is the cavity of the hole, 31 is the gusset plate, 32 is the embedded bolt, 33 is the filling resin, 34 is the high-tension bolt, 35 is the long nut, 36 is the headed stud, 40 is the unbonded part, and 41 is the fixed part. In the following explanation, the direction toward the center C in a front view of the wooden panel 20 is called the "center side," and the direction away from the center C is called the "edge side."

[0028] As shown in this figure, the four corners of the wood panel 20 are provided with notches 21 having a plane (slope 20a) that intersects the top surface 20b or bottom surface and the side surface 20c of the wood panel 20. In this figure, the notches 21 have planes parallel to the top surface 20b and the side surface 20c, in addition to the slope 20a, but the shape of the notches 21 is not limited to this. The wooden panel 20 is fixed between the column-beam frame 2 and the surrounding areas (top surface 20b and side surface 20c in this figure) separated by a gap 6. This gap 6 is set at a distance that prevents the wooden panel 20 from interfering with the column-beam frame 2 during an earthquake.

[0029] The wood panel 20 is provided with a hole 22 that extends diagonally from the notch 21 toward the center C of the wood panel 20. One end of the hole 22 opens into the inclined surface 20a of the notch 21, and the other end is closed. The hole 22 has an inner lumen 23 that is wider than the long nut 35 or embedded bolt 32 described later. It is preferable that the inclined surface 20a of the wood panel 20 is perpendicular to the longitudinal direction of the hole 22. The holes in the wooden panel 20 into which the embedded bolts 32 are inserted are not limited to holes 22, but may also be grooves 22. For example, grooves 22 that open to the back surface and slope 20a of the wooden panel 20 may be provided from the back side of the wooden panel 20, and after inserting the embedded bolts 32 into the grooves 22, the opening on the back surface may be covered with a wooden board or the like.

[0030] A gusset plate 31 is fixed to the column-beam frame 2 of reinforced concrete (RC) or steel-reinforced concrete (SRC) construction. For example, the gusset plate 31 in this figure has a web portion 31a that extends parallel to the back surface of the wood panel 20 to match the shape of the notch 21, and a frame-side flange portion 31b that extends from the end of the web portion 31a along the side surface of the column-beam frame 2. Since the gusset plate 31 in this figure is located at the corner formed by the column 2A and beam 2B of the column-beam frame 2, it has a frame-side flange portion 31b that runs along both the column 2A and the beam 2B. For example, as shown in Figure 4, the frame-side flange portion 31b of a gusset plate 31 that is fixed when it does not come into contact with the column 2A is only the one that runs along the upper or lower beam 2B. Each frame-side flange portion 31b is fixed to the column 2A and beam 2B or only beam 2B of the column-beam frame 2 by multiple headed studs 36.

[0031] The gusset plate 31 also has a panel-side flange portion 31c that extends from the end of the web portion 31a toward the interior side along the slope 20a of the wood panel 20. The panel-side flange portion 31c is provided with a through hole 31d through which the shaft 34a of the high-tension bolt 34 passes. Note that the shape of the gusset plate 31 is not limited to that shown in Figure 3. For example, as shown in Figure 4, the gusset plate 31 located between two wooden panels 20 has two panel-side flange portions 31c that follow the slope 20a of the two wooden panels 20.

[0032] Furthermore, the exposed wooden partition wall 10 is equipped with a connector 30. The connector 30 is a member that connects the gusset plate 31 fixed to the column-beam frame 2 to each wooden panel 20. In this figure, the connector 30 corresponds to an embedded bolt 32, a long nut 35, and a high-tension bolt 34.

[0033] An embedded bolt 32 is inserted into the lumen 23 of the hole 22 in the wooden panel 20. In the following description, the end of the embedded bolt 32 located on the bottom side of the hole 22 (the center side when viewing the wooden panel 20 from the front) will be referred to as one end 32a, and the end on the opening side of the hole 22 will be referred to as the other end 32b.

[0034] A long nut 35 is screwed onto the other end 32b of the embedded bolt 32. A tape (not shown) is wrapped around the shaft of the embedded bolt 32 within a certain range from the other end 32b and the long nut 35, with the shaft of the embedded bolt 32 on the one end side of the tape exposed from the tape. The embedded bolt 32 with the long nut 35 screwed on is inserted into the hole 22 with the one end 32a facing the bottom of the hole 22, while the tape is still wrapped around it. The filling resin 33 fills the entire hole 22. As a result, the filling resin 33 fills the area around the shaft of the embedded bolt 32 exposed from the tape and the lumen 23 around the wrapped tape, and hardens. The shaft of the embedded bolt 32 located within a predetermined range from one end 32a of the embedded bolt 32 is fixed to the lumen 23 of the hole 22 via the filling resin 33 filled in the hole 22. Hereinafter, the part of the shaft of the embedded bolt 32 fixed in the lumen 23 by the filling resin 33 will be referred to as the fixed portion 41. Since the filling resin 33 in the lumen 23 hardens while embedded in the screw groove (not shown) of the fixed portion 41 of the embedded bolt 32, the embedded bolt 32 can be retained in the lumen 23 of the hole 22 even if the embedded bolt 32 is pulled toward the edge due to shaking such as an earthquake. The filling resin 33 is preferably epoxy resin, but other resins or adhesives may also be used.

[0035] The embedded bolt 32 has an unbonded portion 40 between the fixing portion 41 and the long nut 35, which is insulated from the filling resin 33. The unbonded portion 40 is the shaft of the embedded bolt 32 in an area where the filling resin 33 is not directly attached due to the wrapped tape. Preferably, the long nut 35 is located in the inner cavity 23 of the hole 22, as shown in the figure, with its peripheral end aligned with the slope 20a of the wood panel 20 or slightly protruding toward the peripheral side of the slope 20a. This allows the peripheral end of the long nut 35 to receive the horizontal force acting on the column-beam frame 2 from left to right in the figure during an earthquake. Therefore, it is possible to prevent the slope 20a of the wood panel 20 from being destroyed by the force acting from the panel-side flange portion 31c.

[0036] A high-tension bolt 34 is screwed into the edge end of the long nut 35. The high-tension bolt 34 connects the column-beam frame 2 and the long nut 35 via the gusset plate 31, thereby connecting the wood panel 20 and the gusset plate 31. The wood panel 20 is connected to the gusset plate 31 through a small gap 37. The high-tension bolt 34 has a tensile strength of, for example, 490 N / mm². 2 More than 1,000N / mm 2 High-tensile steel of less than 1,000 N / mm 2The bolt is made of the above-mentioned ultra-high-strength steel. The shaft 34a of the high-tension bolt 34 passes through the through hole 31d in the panel-side flange portion 31c and is screwed into the edge end of the long nut 35. As a result, the connector 30 of this embodiment has a structure in which the panel-side flange portion 31c of the gusset plate 31 is sandwiched between the head 34b of the high-tension bolt 34 and the long nut 35.

[0037] This configuration transmits the horizontal force of the column-beam frame 2 transmitted to the gusset plate 31 directly or via the high-tension bolts 34 to the long nut 35. In other words, as described above, the horizontal force moving from left to right in the figure is applied directly from the panel-side flange portion 31c to the edge end of the long nut 35. When a horizontal force is applied to the column-beam frame 2 from right to left in the diagram, the panel-side flange portion 31c in this diagram pushes up the head 34b of the high-tension bolt 34, pulling the long nut 35 toward the edge via the shaft 34a. Since the inner lumen 23 of the hole portion 22 is wider than the diameter of the long nut 35, the force applied to the long nut 35 in the longitudinal direction of the embedded bolt 32 is directly transmitted to the unbonded portion 40. Since the unbonded portion 40 is the part where the shaft of the embedded bolt 32 is insulated from the filling resin 33, the tensile force applied to the long nut 35 causes the unbonded portion 40 of the embedded bolt 32 to stretch. As a result, a resistive force is applied to the gusset plate 31 in the direction that compresses the embedded bolt 32 via the high-tension bolt 34, so the exposed wooden partition wall 10 of this embodiment can resist the horizontal force applied to the column-beam frame 2 from right to left in the diagram.

[0038] Figure 6 is an explanatory diagram of the resistance mechanism of the exposed wooden partition wall 10 in the first embodiment. In this figure, the distortion of the column-beam frame 2 is exaggerated to make the explanation easier to understand. The white arrows in this figure represent the horizontal force acting on the column-beam frame 2 due to earthquakes, etc., and the rotational force generated by the horizontal force. The resistance forces R1 and R2 generated in the exposed wooden partition wall 10 against these forces are represented by the black arrows. In this figure, D represents the diagonal in the front view of the wooden panel 20, and C represents the center in the front view of the wooden panel 20. The resistance mechanism of the exposed wooden partition wall 10 will be explained in detail below, using the leftmost wooden panel 20 in the diagram as an example.

[0039] As described above, the exposed wooden partition wall 10 of this embodiment receives the horizontal force transmitted from the column-beam frame 2 with the long nut 35, resists it with the elastic force of the unbonded portion 40 of the embedded bolt 32, and absorbs the force by plastically deforming in the case of larger forces. When an earthquake occurs in an apartment building, the upper beam 2B and the lower beam 2B of the column-beam frame 2 are subjected to horizontal forces in opposite directions. For example, as shown in the figure, the upper beam 2B is subjected to a horizontal force from left to right, and the lower beam 2B is subjected to a horizontal force from right to left.

[0040] In this case, the high-tension bolts 34 of the upper right and lower left connectors 30 are pulled toward the edge by the panel-side flange portion 31c of the gusset plate 31, causing the unbonded portion 40 of the embedded bolts 32 to stretch. As a result, the elastic force generated in the unbonded portion 40 of the embedded bolts 32 creates a resistive force R1 at the heads 34b of the high-tension bolts 34, pulling the gusset plate 31 toward the center of the wood panel 20 in a front view, as indicated by the black arrows in the upper right and lower left. At the same time, the horizontal force acting on the column-beam frame 2 causes a compressive force toward the center to be applied to the long nuts 35 of the upper left and lower right connectors 30. As a result, a resistance force R2 is generated on the upper left and lower right connectors 30, pushing back the panel-side flange portion 31c of the gusset plate 31 toward the edge using the long nuts 35.

[0041] Thus, the exposed wooden partition wall 10 is constructed of wood panels 20 made of CLT or LVL, which have excellent seismic performance, and the unbonded portions 40 of the connecting members 30 that extend diagonally from the four corners expand and contract due to elastic force, so that it can resist the horizontal force applied to the column-beam frame 2. Furthermore, when an even larger force is applied, the unbonded portions 40 plastically deform and absorb the force.

[0042] Furthermore, since the connectors 30 are positioned diagonally from the four corners of the wood panel 20 toward the center C, greater load-bearing capacity and high deformation performance can be obtained with fewer connecting hardware than when connecting with steel plate insertion drift pin joints and embedded bolt joints.

[0043] Furthermore, a long nut 35 is attached to the other end 32b of the embedded bolt 32, and the long nut 35 contacts the panel-side flange portion 31c, so that the panel-side flange portion 31c, which has moved towards the center due to an earthquake, can be supported by the long nut 35. This prevents the slope 20a of the wooden panel 20 from being destroyed.

[0044] Furthermore, since the wood-based thick panel material 1 is not a single large sheet but is divided into multiple wood panels 20, and each wood panel 20 is connected to the gusset plate 31 with high-tension bolts 34, the exposed wood partition wall 10 of this embodiment can be installed later. In other words, by removing the high-tension bolts 34, the wooden panel 20 can be removed from the column-beam frame 2. Furthermore, since multiple wooden panels 20 are combined to form one wooden thick-plate surface material 1, the weight of each wooden panel 20 can be set to any size (width) so that it can be installed by hand. Therefore, the wooden panels 20 can be carried in from the entrance on a trolley or the like, and old wooden panels 20 can be carried out. Consequently, the exposed wooden partition wall 10 of this embodiment does not require a large lifting machine to lift the wooden panels 20, so the exposed wooden partition wall 10 can be replaced even after completion. This means that, for example, if it becomes necessary to replace the wooden panels 20 due to a fire, the damaged wooden panels 20 can be replaced with new ones. Also, when performing seismic retrofitting work, the exposed wooden partition wall 10 can be installed as a new load-bearing wall by connecting the gusset plate 31 and the wooden panel 20 to the column-beam frame 2 where a normal wall was located.

[0045] In this way, the exposed wooden partition wall 10 has a thick wooden panel 1 divided into multiple wooden panels 20, and connectors 30 are arranged diagonally from the four corners of each wooden panel 20 toward the center C, and the embedded bolts 32 of the connectors 30 have an unbonded portion 40 that is insulated from the filling resin 33. As a result, the exposed wooden partition wall 10 can be used as a load-bearing wall. Furthermore, the fire-resistant material 3 between the pair of thick wooden panel panels 1 prevents the fire from spreading to the adjacent door, so even if one of the pair of thick wooden panel panels 1 is destroyed by fire, the other thick wooden panel panel 1 can remain intact. As a result, even if one of the thick wooden panel panels 1 is missing, the exposed wooden door partition wall 10 can maintain its seismic performance as a load-bearing wall. Therefore, until the right-hand thick wooden panel panel 1 is replaced during the restoration work, the intact thick wooden panel panel 1 on the adjacent door side allows the exposed wooden door partition wall 10 to function as a load-bearing wall.

[0046] According to the present invention described above, since the wall material 5, on which the outermost layer is a thick wooden panel 1, is surrounded on all four sides by a column and beam frame 2 made of reinforced concrete or steel-reinforced concrete, even if the wall material 5 is destroyed by fire, the remaining column and beam frame 2 will prevent the building from collapsing. In other words, the exposed wooden partition wall 10 of the present invention can meet the fire resistance standards required for a main structural component even without covering the wood-based thick panel material 1 with fire-resistant material 3. Therefore, the exposed wooden partition wall 10 can use the wood-based thick panel material 1 in an exposed state while still meeting the fire resistance requirements.

[0047] Furthermore, according to the present invention, the wall material 5 has a pair of wood-based thick panel panels 1 on the outermost part in the thickness direction of the wall material 5 so as to be exposed to each of the two dwelling units U1 and U2, and has a fire-resistant material 3 and a sound-absorbing material 4 (or an air layer for sound insulation) between the pair of wood-based thick panel panels 1. As a result, the exposed wood partition wall 10 not only possesses sufficient fire resistance and sound insulation performance to meet the standards required for partition walls, but also provides a comfortable living space where the soft and warm feel of wood can be felt by using the wood-based thick panel material 1 in an exposed state. In other words, the exposed wood partition wall 10 of the present invention can simultaneously have the effect of possessing the fire resistance and sound insulation performance required for partition walls, and the effect of being able to use the wood-based thick panel material 1 in an exposed state. Furthermore, the exposed wood partition wall 10 can, of course, also contribute to carbon sequestration.

[0048] It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. [Explanation of Symbols]

[0049] 1. Wood-based thick paneling material, 2 column beam frame, 2A column, 2B beam, 3. Fire-resistant material, 4. Sound-absorbing material, 5. Wall material, 6. The gap between the column-beam frame and the timber panel, 10. Exposed wooden partition walls between doors, 20 wood panels, 20a slope, 20b top surface, 20c Side, 21 Notch, 22 Holes, grooves, 23 Luminous parts of holes or grooves, 30 connectors, 31 Gusset plate, 31a Web section, 31b Frame side flange section, 31c Panel side flange portion, 31d Through hole, 32 Embedded bolt, 32a One end, 32b other end, 33 filled resin, 34 high tension bolts, 34a shaft, 34b head, 35 long nuts, 36 headed studs, 37. The gap between the gusset plate and the wood panel, 40 Unbonded part, 41 Fixed part, 100 Conventional fire-resistant walls, 101 Fire-resistant materials, 102 Wood-based thick paneling material, 103 Sound-absorbing material, 110 A partition wall that satisfies conventional fire resistance and sound insulation performance, R1, R2 Resistance force generated in the exposed wooden partition wall against horizontal forces. C. Center of the wood panel in a front view. D. Diagonal lines in a front view of the wood panel. U1, U2 units

Claims

1. A column-beam frame made of reinforced concrete or steel-reinforced concrete is installed at the boundary between two adjacent dwelling units in an apartment building, It comprises a wall material that separates two dwelling units, surrounded on all four sides by the column and beam frame, The aforementioned wall material comprises a pair of wood-based thick panel materials located on the outermost side in its thickness direction and exposed to each of the two aforementioned dwelling units, A pair of fire-resistant materials are provided between the pair of wood-based thick panel materials, spaced apart from each other in the thickness direction, A wooden partition wall having a sound-absorbing material or an air layer for sound insulation provided between a pair of fire-resistant materials.

2. The wood-based thick panel material is made of CLT or LVL, as described in claim 1, for the exposed wood partition wall.

3. Each thick wood-based panel is composed of multiple wood panels arranged horizontally on a flush surface. The aforementioned exposed wooden partition wall comprises connecting members that are positioned diagonally from the four corners of each wooden panel toward the center of the wooden panel in a front view, and that connect the column and beam frame to each wooden panel. The connecting device comprises an embedded bolt, one end of which is inserted into the lumen of a hole or groove extending diagonally from the four corners toward the center of the wooden panel, with the bolt facing toward the center of the lumen. A long nut that is screwed onto the other end of the embedded bolt, The column-beam frame and the long nut are connected by high-tension bolts, The embedded bolt has a fixing portion located on the central side of the lumen and fixed to the lumen by the filling resin that fills the lumen, A wooden partition wall according to claim 1 or 2, comprising an unbonded portion located between the long nut and the fixing portion and insulated from the filling resin.

4. The aforementioned wooden panel has notches at its four corners, each having a slope that intersects its upper or lower surface with its side surface. The wooden partition wall according to claim 3, wherein the hole or groove opens to the slope.

5. It includes a gusset plate that is fixed to the aforementioned column and beam frame, The gusset plate has a panel-side flange portion through which the shaft of the high-tension bolt passes, The head of the high-tension bolt and the long nut sandwich the panel-side flange portion, as described in claim 3.

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