High-rise building with hybrid floor sections

Abstract

The present invention provides a high-rise building equipped with a hybrid floor section that can stably and efficiently support the lateral forces caused by lateral shaking during an earthquake. [Solution] The hybrid floor section, the upper floor 30, is equipped with a concrete core section 50 made of reinforced concrete having a rectangular cross-sectional shape, which is formed continuously in the vertical direction so as to penetrate the upper floor section 30. In the hybrid floor section, the upper floor 30, the ceiling slab 51 and floor slab 52 of each floor are formed integrally with the concrete core section 50, and each of the multiple wooden columns 53 is divided at the portion of the floor slab 52 of the upper floor which is also the ceiling slab 51 of the lower floor, and is erected and installed between the ceiling slab 51 and floor slab 52 on each floor.

Description

Technical Field

[0001] The present invention relates to a high-rise building having a hybrid hierarchical portion, and more particularly to a high-rise building having a hybrid hierarchical portion composed of multiple floors of a wooden hybrid structure including wooden columns and floor slabs and ceiling slabs of a reinforced concrete structure.

Background Art

[0002] Preferably, as part of recent efforts towards ESG / SDGs, for example, for mid-rise to high-rise buildings, it is recommended to construct them using a large amount of wooden materials. Wooden materials require less energy for processing compared to other materials, and their long-term use at multiple stages contributes to preventing global warming and forming a recycling-oriented society. They can also absorb carbon dioxide and fix carbon, and thus are attracting attention from the perspective of decarbonization.

[0003] In addition, when constructing mid-rise to high-rise buildings using wooden materials, it is considered that the strength is likely to be insufficient. Therefore, while using a large amount of wooden materials, the aim is to efficiently ensure a predetermined strength. Hybrid buildings constructed using wooden materials and non-wooden materials formed of steel frames or concrete (for example, see Patent Document 1), and wooden-RC (reinforced concrete) mixed-structure buildings constructed by combining wooden and RC structures (for example, see Patent Document 2 and Non-Patent Document 1) have been developed.

[0004] Furthermore, in Japan where earthquakes occur frequently, especially for mid-rise to high-rise buildings, consideration for lateral sway during earthquakes is necessary. For example, mid-rise seismic isolation buildings with a wooden hybrid structure having a seismic isolation function have been developed for hybrid buildings made of wood and RC (for example, see Non-Patent Document 2 and Non-Patent Document 3). In the seismic isolation buildings with a wooden hybrid structure described in Non-Patent Document 2 and Non-Patent Document 3, it is difficult to give the wooden part a seismic isolation function. Therefore, by adopting base isolation, a seismic isolation function can be given to buildings with a wooden hybrid structure.

Prior Art Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2019-100057 [Patent Document 2] Japanese Patent Publication No. 2024-104599 Public Relations [Non-patent literature]

[0006] [Non-Patent Document 1] Dai-ichi Life Insurance Company, Limited, Shimizu Corporation, 'Plan for a rental office building with a wooden hybrid structure in Kyobashi, Chuo-ku, Tokyo: First in the insurance industry to be selected for the Sustainable Building Leading Project (Wooden Leading Type)', [online], February 28, 2023, Shimizu Corporation, [Retrieved September 26, 2024], Internet<URL:https: / / www.shimz.co.jp / company / about / news-release / 2023 / 2022074.html> [Non-Patent Document 2] Yoshihiro Sasaki, et al., 'Technical Report: Mid-rise Apartment Building with Wood Hybrid Structure - Anesis Chayagasaka -', [online], April 2021, GBRC Journal Vol. 46 No. 2, [Retrieved September 26, 2024], Internet<URL:https: / / www.gbrc.or.jp / assets / documents / gbrc / GBRC184_889.pdf> [Non-Patent Document 3] Fumiki Nakamura, et al., 'Technical Report: Nagato City Hall - Aiming to be a Model Project for Large-Scale Layered Wooden Structures -', [online], July 2020, GBRC Journal Vol. 45 No. 3, [Retrieved September 27, 2024], Internet<URL:https: / / www.gbrc.or.jp / assets / documents / gbrc / GBRC181_873.pdf> [Overview of the project] [Problems that the invention aims to solve]

[0007] On the other hand, during an earthquake, if a high-rise building with a hybrid floor section consisting of multiple floors made of a wooden hybrid structure experiences lateral shaking, especially if the upper floors are made of a wooden hybrid structure which tends to lack strength, the acceleration due to lateral shaking will increase with each higher floor, increasing the lateral force. This makes it difficult to stably support the lateral force caused by lateral shaking. Therefore, it is necessary to construct the upper floors of the building with a wooden hybrid structure in order to stably, efficiently, and effectively support such lateral forces during an earthquake. In addition, since wooden hybrid structures are lighter and more flexible than reinforced concrete structures, the amplitude of the lateral shaking tends to increase in the upper floors when the building is made taller.

[0008] The present invention aims to provide a high-rise building equipped with a hybrid floor section that can stably, efficiently, and effectively support lateral forces caused by lateral shaking during an earthquake, even if the upper floor section consists of a hybrid floor section made of multiple floors of a wooden hybrid structure. [Means for solving the problem]

[0009] The present invention provides a high-rise building having a hybrid floor section consisting of multiple floors of a wooden hybrid structure formed by multiple wooden columns and reinforced concrete floor slabs and ceiling slabs, wherein the hybrid floor section has a concrete core section of a reinforced concrete structure with a rectangular cross-sectional shape that is formed continuously in the vertical direction so as to penetrate the hybrid floor section, and in the hybrid floor section, the ceiling slab and floor slab of each floor are formed integrally with the concrete core section, and each of the multiple wooden columns is separated by the portion of the floor slab of the upper floor which is also the ceiling slab of the lower floor, and is erected and installed between the ceiling slab and floor slab on each floor, thereby achieving the above objective.

[0010] Furthermore, in the high-rise building having the hybrid floor section of the present invention, it is preferable that in the hybrid floor section, the ceiling slab and the floor slab are integrally joined to the wooden beams and / or formed integrally with the concrete beams, and each of the plurality of wooden columns is erected and installed between the ceiling slab and the floor slab with these wooden beams or concrete beams interposed therebetween.

[0011] Furthermore, in the high-rise building equipped with the hybrid floor portion of the present invention, it is preferable that a wooden seismic wall is erected and installed in the hybrid floor portion in the portion between the ceiling slab and the floor slab, or between them with the wooden beam or concrete beam interposed therebetween.

[0012] Furthermore, it is preferable that the high-rise building equipped with the hybrid floor portion of the present invention is supported by the concrete core portion, and that a reinforced concrete elevator shaft is provided located inside the concrete core portion.

[0013] Furthermore, the high-rise building equipped with the hybrid floor portion of the present invention is preferably composed of a lower floor consisting of multiple floors of reinforced concrete structure and an upper floor consisting of the hybrid floor portion of wooden hybrid structure, with an intermediate floor seismic isolation layer interposed between the lower floor and the upper floor of the lower floor. [Effects of the Invention]

[0014] According to the present invention, when a high-rise building equipped with a hybrid floor section experiences lateral shaking during an earthquake, even if the high-rise section consists of multiple floors made of a wooden hybrid structure, it can efficiently and effectively support the lateral forces caused by the shaking in a stable manner. [Brief explanation of the drawing]

[0015] [Figure 1]A broken perspective view showing a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention, with the outer peripheral wall removed. [Figure 2] A cross-sectional view taken along A-A of FIG. 5 for explaining a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention. [Figure 3] A cross-sectional view taken along B-B of FIG. 5 for explaining a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention. [Figure 4] A cross-sectional view taken along C-C of FIG. 2 for explaining a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention. [Figure 5] A cross-sectional view taken along D-D of FIG. 2 for explaining a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention. [Figure 6] A cross-sectional view taken along E-E of FIG. 2 for explaining a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention. [Figure 7] An enlarged view of part F of FIG. 2 for explaining the seismic isolation slit provided in the intermediate floor concrete wall. [Figure 8] A cross-sectional view of, for example, the part between the 4th floor and the 5th floor taken along G-G of FIG. 6 for explaining a high-rise building with a hybrid hierarchical part according to a preferred embodiment of the present invention.

Embodiments for Carrying out the Invention

[0016] As shown in FIG. 1, the high-rise building 10 with a hybrid hierarchical part according to a preferred embodiment of the present invention is preferably a high-rise building with 6 or more floors, for example, an 8-story building, and is preferably provided with a seismic isolation function so that it can continue to hold the building in a stable state during an earthquake. The high-rise building 10 of the present embodiment includes a lower layer 20 composed of, for example, two floors with a reinforced concrete structure, and an upper layer 30 composed of, for example, six floors as a hybrid hierarchical part composed of multiple floors with a wooden hybrid structure, and is a building made of reinforced concrete and wood. The high-rise building 10 with a hybrid hierarchical part according to the present embodiment has a function of efficiently and effectively supporting the lateral force caused by the sway in a stable state even when the high-rise part is a hybrid hierarchical part composed of multiple floors with a wooden hybrid structure when a lateral sway occurs during an earthquake.

[0017] As shown in FIGS. 1 to 3, the high-rise building 10 with a hybrid hierarchical part according to the present embodiment is a high-rise building including an upper layer 30 which is a hybrid hierarchical part composed of multiple floors with a wooden hybrid structure formed by a plurality of wooden columns 53, a floor slab 52 and a ceiling slab 51 with a reinforced concrete structure. The high-rise building is provided with a concrete core part 50 with a rectangular cross-sectional shape formed continuously in the vertical direction so as to penetrate the upper layer 30 which is the hybrid hierarchical part (see FIGS. 3, 5, and 6). In the upper layer 30 which is the hybrid hierarchical part, the ceiling slab 51 and the floor slab 52 of each floor are integrally formed with the concrete core part 50, and each of the plurality of wooden columns 53 is installed and erected between the ceiling slab 51 and the floor slab 52 on each floor in a state of being divided by the part of the floor slab 52 of the upper floor which is also the ceiling slab 51 of the lower floor.

[0018] Furthermore, in this embodiment, the high-rise building 10 is composed of a lower floor 20 consisting of multiple floors (preferably two floors in this embodiment) of a reinforced concrete structure, and an upper floor 30 consisting of a hybrid floor portion with multiple floors (preferably six floors in this embodiment) of a wooden hybrid structure (see Figures 1 and 2). An intermediate floor seismic isolation layer 40 is interposed between the lower floor (preferably the first floor in this embodiment) 21 and the upper floor (preferably the second floor in this embodiment) 22 of the lower floor 20.

[0019] In this embodiment, the high-rise building 10, which includes a hybrid floor section, is constructed, for example, as an employee dormitory. The first floor 21, which is the lowest floor of the lower floor 20, a two-story reinforced concrete structure, is formed as a public space mainly equipped with a dining hall, bathhouse, garbage disposal area, etc. The second floor 22 of the lower floor 20, which is separated by the intermediate floor seismic isolation layer 40, and the third to eighth floors of the upper floor 30, which is a hybrid floor section of a wooden hybrid structure above the lower floor 20, are formed as living spaces with multiple private rooms for each employee (see Figures 5 and 6). In this embodiment, the intermediate floor seismic isolation layer 40, which provides seismic isolation functionality, is preferably formed as a dedicated seismic isolation space that is not normally accessed by residents, in the area between the first floor 21, which is formed as a public space, and the second floor 22, which is formed as a living space, in the lower floor 20, which is a reinforced concrete structure.

[0020] In this embodiment, the intermediate floor seismic isolation layer 40 constituting the high-rise building 10 is preferably interposed between the first floor 21, which is the lowest floor, and the second floor 22, which is the highest floor, of the lower floor 20, which is a reinforced concrete structure, and is provided so as to fit within the same planar area as the first floor 21 without protruding outward from it. The intermediate floor seismic isolation layer 40 is composed of a ceiling slab 41 of the first floor 21, which is also the floor slab of the intermediate floor seismic isolation layer 40, a floor slab 42 of the second floor 22, which is also the ceiling slab of the intermediate floor seismic isolation layer 40, and a plurality of seismic isolation operating parts 43 interposed between the ceiling slab 41 of the first floor 21 and the floor slab 42 of the second floor 22, supporting the ceiling slab 41 so as to be able to move laterally relative to the floor slab 42. Furthermore, the intermediate floor concrete wall 45 of the intermediate floor seismic isolation layer 40, including the outer perimeter wall 45a, which is erected between the ceiling slab 41 of the first floor 21 and the floor slab 42 of the second floor 22, is formed in a state where it is divided vertically by seismic isolation slits 46, without supporting any load from above via the ceiling slab 41, as shown in Figures 2 and 7.

[0021] The floor slab 42 of the second floor 22, which constitutes the intermediate seismic isolation layer 40, is made of cast-in-place concrete poured by a known method after the formwork for the slab is appropriately assembled together with temporary scaffolding. As shown in Figures 1 and 2, the floor slab 42 is preferably formed integrally with the ceiling beams 44, which are arranged in a grid pattern at predetermined intervals in the vertical and horizontal directions on the ceiling portion of the intermediate seismic isolation layer 40 and supported by these ceiling beams 44. Multiple upper concrete base portions 42a, each projecting downward from the intersections of the grid-like ceiling beams 44 on the underside of the floor slab 42 with a projection height of, for example, about 1800 mm, are provided, preferably with a rectangular plan shape of about 1500 to 1800 mm in size, distributed vertically and horizontally (see Figure 4).

[0022] The ceiling slab 41 of the first-floor 21, which constitutes the intermediate seismic isolation layer 40, is also made of cast-in-place concrete poured by a known method, with the slab formwork appropriately assembled together with temporary scaffolding. The ceiling slab 41 is supported by floor beams 48 which are arranged in a grid pattern at predetermined intervals in the vertical and horizontal directions on the floor portion of the intermediate seismic isolation layer 40, and is formed integrally with these floor beams 48. On the upper side of the ceiling slab 41, at positions corresponding to the multiple upper concrete base portions 42a that protrude downward from the floor slab 42 of the second-floor 22, there are multiple lower concrete base portions 41a, preferably with a rectangular cross-sectional shape similar to the upper concrete base portions 42a, with dimensions of approximately 1500 to 1800 mm in both length and width, each protruding upward with a projection height of, for example, about 500 mm, and are distributed vertically and horizontally (see Figure 4).

[0023] Furthermore, between the multiple upper concrete base portions 42a that protrude downward from the floor slab 42 of the second floor 22 and the multiple lower concrete base portions 41a that protrude upward from the ceiling slab 41 of the first floor 21, known seismic isolation devices 47, such as high-damping rubber laminated bearings, elastic sliding bearings, and linear rolling bearings, are installed so as to be sandwiched between these upper and lower base portions 41a and 42a. As a result, seismic isolation operating units 43, which include the lower concrete base portions 41a, the upper concrete base portions 42a, and the seismic isolation devices 47, are interposed between the ceiling slab 41 of the lower floor 21 and the floor slab 42 of the upper floor 22 and are provided at multiple locations. This also makes it possible to support the ceiling slab 41 from the floor slab 42 so as to allow relative movement in the lateral direction by the multiple seismic isolation operating units 43.

[0024] Furthermore, in this embodiment, as shown in Figure 4, known damper devices 49 can be installed at multiple locations in the intermediate floor seismic isolation layer 40 at appropriate positions. The damper devices 49 can be installed by connecting one end to the ceiling slab 41 of the first floor 21 and the other end to the floor slab 42 of the second floor 22, for example, by extending two damper devices 49 in the east-west direction and three damper devices 49 in the north-south direction. Because the damper devices 49 are installed at multiple locations in the intermediate floor seismic isolation layer 40 at appropriate positions, the stress due to the resistance of the damper devices 49 is distributed and transmitted, making it possible to reduce displacement during an earthquake without concentrating large stresses locally.

[0025] In this embodiment, the intermediate floor concrete wall 45, including the outer perimeter wall 45a, which is erected between the ceiling slab 41 of the first floor 21 and the floor slab 42 of the second floor 22 and installed in the intermediate floor seismic isolation layer 40, is formed in a state where it is divided vertically by seismic isolation slits 46. The seismic isolation slits 46 are formed by creating slit-shaped gaps, preferably with a spacing of about 50 mm, at a predetermined height position in the intermediate portion of the intermediate floor concrete wall 45 in the height direction, traversing the intermediate floor concrete wall 45 throughout the entire intermediate floor seismic isolation layer 40. As shown in Figure 7, for example, in the outer perimeter wall 45a, the gaps formed by the seismic isolation slits 46 are preferably filled with a gap-filling material 46a such as rock wool or fire-resistant joint material, and a trim material 46b, for example made of aluminum, can be attached to cover the gaps formed by the seismic isolation slits 46 from the outside. This makes it possible to prevent wind and rain from entering the building from the outside through the gaps formed by the seismic isolation slits 46.

[0026] Furthermore, since the intermediate floor concrete wall 45 of the intermediate floor seismic isolation layer 40, including the outer perimeter wall 45a, is formed in a state where it is divided vertically via a seismic isolation slit 46, during an earthquake, when the floor slab 42 of the upper floor 22 moves laterally relative to the ceiling slab 41 of the lower floor 21 due to the action of the seismic isolation device 47 of the seismic isolation operating unit 43 in the intermediate floor seismic isolation layer 40, it is possible to avoid such lateral movement being hindered by the intermediate floor concrete wall 45 interposed between them, thereby allowing for smooth lateral movement.

[0027] In this embodiment, the second floor 22 of the reinforced concrete lower floor 20 is preferably the top floor of the lower floor 20, and the intermediate floor seismic isolation layer 40 is interposed between the second floor, which is the top floor of the lower floor 20, and the first floor 21, which is preferably the bottom floor. Furthermore, the second floor 22, which is the top floor of the reinforced concrete lower floor 20, is entirely made of reinforced concrete, including the ceiling slab 23 which also serves as the floor slab of the third floor 31, which is the bottom floor of the upper floor 30, and the ceiling beams 23a that support the ceiling slab 23. In this embodiment, sufficient superimposed load on the seismic isolation devices 47 of the multiple seismic isolation operating parts 43 constituting the intermediate floor seismic isolation layer 40 is ensured by the weight of the concrete, which has a large unit weight, thereby increasing the natural period above the intermediate floor seismic isolation layer 40 and ensuring the effectiveness of the seismic isolation structure.

[0028] In other words, in this embodiment, the upper floors 30 from the 3rd to the 8th floor, which are continuous above the lower floor 20 made of reinforced concrete, are a wood hybrid structure, preferably a wood-RC structure combining wood and RC (reinforced concrete), mainly using wood materials with a small unit weight. As a result, the overall weight of the upper floors 30 is lighter compared to an RC structure, which may mean that in the event of an earthquake, it may not be possible to secure a sufficient superimposed load to properly function the seismic isolation devices 47 of the multiple seismic isolation operating parts 43 of the intermediate floor seismic isolation layer 40. In this embodiment, the entire 2nd floor 22, including the ceiling slab 23 and ceiling beams 23a of the 2nd floor 22, which is also the floor slab of the 3rd floor 31a, the lowest floor of the upper floors 30, is made of reinforced concrete with considerable weight, thereby ensuring a sufficient superimposed load on the seismic isolation devices 47 of the seismic isolation operating parts 43.

[0029] In this embodiment, the second floor 22, which is the top floor of the lower floor 20 of the reinforced concrete structure, is formed as a living space with multiple private rooms, as described above. As shown in Figure 5, the second floor 22 has a roughly L-shaped plan, consisting of a western main floor section 22a having a wider plan in the north-south direction, obtained by cutting out, for example, a quarter of the northeast horizontally elongated rectangular plan in the east-west direction, and an overhanging floor section 22b having a narrower width in the north-south direction, which extends eastward from approximately the southern half of the main floor section 22a.

[0030] On the second floor 22 of the reinforced concrete structure, a corridor 22c is provided that traverses the central north-south part of the main floor 22a and extends further east-west along the northern edge of the cantilevered floor 22b. To the south of the corridor 22c, for example, 10 private rooms 25 are provided, separated by a reinforced concrete partition wall 22d, and are connected in an east-west direction from the main floor 22a to the cantilevered floor 22b, with access from the corridor 22c. To the north of the corridor 22c on the main floor 22a, for example, 2 private rooms 25 are provided in the western part, separated by a partition wall 22e made of gypsum board or the like, with access from the corridor 22c. Adjacent to the east of these, a concrete core section 50 with a rectangular cross-section of reinforced concrete structure is provided, where the elevator shaft 35, described later, is located. Adjacent to the east of the concrete core section 50, a reinforced concrete stairwell 55 is provided (see Figure 6). The concrete core section 50 and the elevator shaft 35 are constructed to be erected continuously upward from the second floor 22 to the eighth floor 31f, which is the top floor of the upper floor 30, as will be described later (see Figure 3).

[0031] Furthermore, in this embodiment, the floors from the 3rd floor 31a to the 8th floor 31f in the upper floor 30, which is connected to the 2nd floor 22, the top floor of the lower floor 20 of the reinforced concrete structure, are formed as living spaces with multiple private rooms 25, as described above, and have substantially the same floor plan. The floors from the 3rd floor 31a to the 8th floor 31f are a hybrid floor section consisting of multiple floors of a wooden hybrid structure. For example, as shown in Figure 6, the 4th floor 31b has a plan shape that adds one private room 25 on the base end side (west side) in the cantilever direction of the cantilevered floor section 22b to the main floor section 22a of the 2nd floor 22 of the reinforced concrete structure.

[0032] On the 4th floor 31b, which is a wooden hybrid structure, a corridor 32a is provided that crosses the central part in the north-south direction. On the south side of the corridor 32a, for example, six private rooms 33 are provided, connected in the east-west direction and accessible from the corridor 32a, preferably separated by wooden partition walls 32b and partition walls made of gypsum board or the like. On the north side of the corridor 32a, for example, two private rooms 33 are provided in the western part, preferably separated by wooden bracing and partition walls made of gypsum board or the like, and accessible from the corridor 32a. Adjacent to the east of these, similar to the 2nd floor 22, a concrete core section 50 with a rectangular cross-section of reinforced concrete structure is provided, where the elevator shaft 35, which will be described later, is located. Further east of the concrete core section 50, a stairwell 55 of reinforced concrete structure is provided.

[0033] Furthermore, in this embodiment, the upper floors 30, which are formed continuously above the lower floor 20 of the reinforced concrete structure, for example from the 3rd floor 31a to the 8th floor 31f, are a hybrid floor section consisting of multiple floors of a wooden hybrid structure, formed by a plurality of wooden columns 53 and a reinforced concrete floor slab 52 and ceiling slab 51, as described above. The upper floors 30 of the wooden hybrid structure are preferably erected from the floor slab 42 of the 2nd floor 22, which is the top floor of the lower floor 20 of the reinforced concrete structure (see Figure 3), and include a concrete core section 50 of a reinforced concrete structure with a rectangular cross-sectional shape that is formed continuously in the vertical direction so as to penetrate the upper floors 30 of the wooden hybrid structure (see Figures 5 and 6). In the upper floor 30, which is a wooden hybrid structure, the ceiling slab 51 and floor slab 52 of each floor 31a to 31f are formed integrally with the concrete core 50, projecting outward from the concrete core 50. Each of the multiple wooden columns 53 is separated at the portion of the floor slab 52 of the upper floors 31b to 31f, which is also the ceiling slab 51 of the lower floors 31a to 31f, and is erected and installed between the ceiling slab 51 and floor slab 52 of each floor 31a to 31f (see Figure 3).

[0034] In other words, in this embodiment, preferably, the concrete core portion 50 of the reinforced concrete structure is formed sequentially by pouring concrete for each floor 31a to 31f, starting from the floor slab 42 of the second floor 22 of the lower floor 20 of the reinforced concrete structure. For example, the ceiling slabs 51 of each floor 31a to 31f can be formed by assembling the formwork for the slab and simultaneously pouring concrete while the reinforcing bars to be placed are joined to the reinforcing bars of the concrete core portion 50. This makes it possible to form the ceiling slabs 51 of each floor 31a to 31f as an integral part of the concrete core portion 50, so as to protrude outward from the concrete core portion 50.

[0035] Furthermore, multiple wooden columns 53 can be installed between the ceiling slab 51 and the floor slab 52 by erecting and attaching them to predetermined positions where they will be installed, preferably at the same time as or prior to the installation of scaffolding for formwork.

[0036] In the upper floor 30, which is a wooden hybrid structure, the ceiling slabs 51 and floor slabs 52 of each floor 31a to 31f are formed integrally with the concrete core 50 so as to protrude outward from the concrete core 50. Therefore, even if lateral shaking occurs in the upper floor 30, which is a wooden hybrid structure, during an earthquake, and the acceleration of the upper floor 30 increases, particularly the acceleration of the high-rise portion, and lateral forces such as horizontal forces increase, these horizontal forces are smoothly transmitted to the concrete core 50, which is a reinforced concrete structure with a highly rigid rectangular cross-sectional shape, via the ceiling slabs 51 and floor slabs 52. This makes it possible to support such lateral forces such as horizontal forces during an earthquake in a stable, efficient, and effective manner.

[0037] Furthermore, in this embodiment, since the ceiling slab 51 and floor slab 52 of each floor 31a to 31f are made of reinforced concrete, it is possible to effectively improve the sound insulation performance between upper and lower floors compared to wooden ceiling slabs and floor slabs.

[0038] Furthermore, in this embodiment, the ceiling slabs 51 and floor slabs 52 of each floor 31a to 31f are formed integrally with the concrete core 50. In particular, the lateral forces applied to the upper floor 30 can be efficiently borne by the highly rigid concrete core 50. This reduces the stress placed on the wooden columns 53, the wooden beams 54a (described later), and the wooden seismic walls 56. This makes it possible to form these wooden materials more easily and effectively improves the degree of freedom when designing, for example, the division of living spaces and windows.

[0039] In this embodiment, preferably as shown in Figure 2, in the upper floor 30 which is a hybrid tiered section, the ceiling slab 51 and floor slab 52 are integrally joined to the wooden beam 54a, and / or the ceiling slab 51 and floor slab 52 are integrally formed with the concrete beam 54b, preferably as shown in Figure 8. Each of the multiple wooden columns 53 is installed upright between the ceiling slab 51 and floor slab 52 with these wooden beams 54a or concrete beam 54b interposed therebetween (see Figures 2 and 8). This makes it possible to transmit vertical loads from the upper floor above the ceiling slab 51 to the wooden columns 53 of the lower floor via the floor slab 52 or concrete beam 54b.

[0040] Here, the wooden beam 54a is preferably supported by scaffolding when forming the ceiling slabs 51 of the floors 31a to 31f on each floor, and assembled in a predetermined position together with the formwork for the slab, so that when the poured concrete hardens, the ceiling slabs 51 can be joined to the wooden beam 54a as a single unit.

[0041] Furthermore, when forming the ceiling slabs 51 of each floor 31a to 31f, for example, by assembling the formwork for the beam in a continuous manner with the formwork for the slab, it becomes possible to form the ceiling slab 51 integrally with the concrete beam 54b when the poured concrete hardens. In this embodiment, in the upper floor 30 of the wooden hybrid structure, the concrete beam 54b (see Figure 6), which extends in the east-west direction along the northern and southern edges, is formed as an inverted beam that protrudes from the upper surface of the ceiling slab 51 (floor slab 52) (see Figure 8).

[0042] Furthermore, in this embodiment, in the upper floor 30 which is a hybrid floor section, a wooden seismic wall 56 is erected and installed, preferably in the portion between the ceiling slab 51 and the floor slab 52, or with a wooden beam 54a or concrete beam 54b interposed between them (see Figures 1, 6, and 8). By erecting and installing the wooden seismic wall 56 in the portion between the ceiling slab 51 and the floor slab 52, it becomes possible to transmit the vertical load from the upper floor above the ceiling slab 51 to the wooden column 53 on the lower floor via the floor slab 52 or concrete beam 54b in an even more stable manner, in cooperation with the wooden column 53.

[0043] Furthermore, in the high-rise building 10 of this embodiment, as shown in Figure 3, a reinforced concrete elevator shaft 35 is provided extending downward to a height reaching the floor slab 21a of the 1st floor 21, which is the lowest floor of the lower floor 20, while being supported at least by the floor slab 42 of the upper floor 22 that forms the intermediate floor seismic isolation layer 40. In this embodiment, the elevator shaft 35 is preferably supported by the floor slab 42 of the upper floor 22 that forms the intermediate floor seismic isolation layer 40, and is also positioned inside a concrete core section 50 that is continuously erected upward from the floor slab 42 of the upper floor 22 to the 8th floor 31f, which is the top floor of the upper floor 30. It is then integrally joined to multiple floor support slabs 57 that are formed to project inward from the concrete core section 50 on each floor 31a to 31f of the upper floor 30, thereby also being supported by the concrete core section 50. Furthermore, the elevator shaft 35 is positioned to be inserted into the insertion openings 41b, 21b, while maintaining a predetermined distance 41c, 21c between the opening edge of the insertion opening 41b formed in the ceiling slab 41 of the first floor 21, which is the lower floor forming the intermediate floor seismic isolation layer 40, and the opening edge of the insertion opening 21b formed in the floor slab 21a of the first floor 21, which is at least the lower floor below, and these insertion openings 41b, 21b.

[0044] Furthermore, in this embodiment, the planar area of ​​the upper floor 30, which is preferably a wooden hybrid structure, is smaller than the planar area of ​​the lower floor 20, which is a reinforced concrete structure, and the upper floor 30 is provided in a state where it is positioned to the west, for example, as a predetermined direction within the planar area of ​​the lower floor 20.

[0045] Furthermore, according to the high-rise building 10 of this embodiment, which has the above-described configuration and includes a hybrid floor section, when lateral shaking occurs during an earthquake, even if the high-rise section is a hybrid floor section consisting of multiple floors made of a wooden hybrid structure, it becomes possible to support the lateral forces caused by the lateral shaking in a stable, efficient, and effective manner.

[0046] In other words, the high-rise building 10 of this embodiment is equipped with a concrete core section 50 of a reinforced concrete structure having a rectangular cross-sectional shape, which is formed continuously in the vertical direction so as to penetrate the upper floor 30, which is a hybrid floor section. In the upper floor 30, the ceiling slab 51 and floor slab 52 of each floor are formed integrally with the concrete core section 50. As described above, even if a lateral sway occurs in the upper floor 30, which is a wooden hybrid structure, during an earthquake, and the acceleration of the high-rise portion due to the upper floor 30 increases, resulting in an increase in lateral forces such as horizontal forces, such as horizontal forces, these horizontal forces can be smoothly transmitted to the concrete core section 50 of a reinforced concrete structure having a highly rigid rectangular cross-sectional shape via the ceiling slab 51 and floor slab 52. This makes it possible to support such lateral forces during an earthquake, such as horizontal forces, efficiently and effectively in a stable state.

[0047] It should be noted that the present invention is not limited to the embodiments described above and can be modified in various ways. For example, a high-rise building equipped with the hybrid floor portion of the present invention does not necessarily have to consist of a lower floor comprising multiple floors of reinforced concrete structure and an upper floor comprising a hybrid floor portion of wooden hybrid structure, nor does it necessarily have to have an intermediate seismic isolation layer interposed between the lower and upper floors of the lower floor. The entire structure may consist of a hybrid floor portion comprising multiple floors of wooden hybrid structure. [Explanation of symbols]

[0048] 10 High-rise buildings 20 lower level 21 Lower floor (1st floor) 21a Floor slab of floor 21 on the first floor 21b Through opening 21c spacing 22 Upper floor (2nd floor) 22a Main floor area 22b Overhanging floor section 22c Corridor 22d, 22e Partition wall 23 Ceiling slab 25 private rooms 30 Upper layer 31a 3rd floor 31b 4th floor 32a Corridor 32b Partition wall 33 private rooms 35 Elevator shaft 40 Intermediate floor seismic isolation layer 41. Ceiling slab of the lower floor 41a Lower concrete base 41b Through opening 41c spacing 42 Floor slab of the upper floor 42a Upper concrete base 43 Seismic isolation mechanism 44 Ceiling beams 45 Intermediate floor concrete wall 45a outer wall 46 Seismic isolation slits 46a Gap filler 46b Trim 47 Seismic isolation device 48 Floor beam 49 Damper device 50 Concrete core section 51 Ceiling slab 52 Floor slab 53 Wooden pillar 54a wooden beam 54b Concrete beam 55 Staircase 56. Wooden seismic walls 57 Support slab

Claims

1. A high-rise building having a hybrid floor section consisting of multiple floors of a wooden hybrid structure formed by multiple wooden columns and reinforced concrete floor slabs and ceiling slabs, A high-rise building comprising a reinforced concrete core having a rectangular cross-sectional shape, which is formed continuously in the vertical direction so as to penetrate the hybrid layer, wherein in the hybrid layer, the ceiling slab and floor slab of each floor are formed integrally with the concrete core, and each of the multiple wooden columns is erected and installed between the ceiling slab and floor slab on each floor, separated by the portion of the floor slab of the upper floor which is also the ceiling slab of the lower floor.

2. A high-rise building comprising a hybrid floor portion according to claim 1, wherein in the hybrid floor portion, the ceiling slab and the floor slab are integrally joined to a timber beam and / or formed integrally with a concrete beam, and each of the plurality of timber columns is erected and installed between the ceiling slab and the floor slab with these timber beams or concrete beams interposed therebetween.

3. A high-rise building comprising a hybrid floor portion according to claim 1 or 2, wherein a wooden seismic wall is erected and installed in the portion between the ceiling slab and the floor slab, or between them, with the wooden beam or concrete beam interposed between them.

4. A high-rise building comprising a hybrid floor portion according to claim 1 or 2, wherein a reinforced concrete elevator shaft is supported by the concrete core and is provided located inside the concrete core.

5. A high-rise building comprising a hybrid floor portion according to claim 1 or 2, comprising a lower floor consisting of multiple floors of a reinforced concrete structure and an upper floor consisting of the hybrid floor portion of a wooden hybrid structure, wherein an intermediate floor seismic isolation layer is interposed between the lower floor and the upper floor of the lower floor.

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