Fire-resistant building structures and methods for constructing fire-resistant buildings

Abstract

To provide a fire-resistant building structure and a method for constructing a fire-resistant building that ensures the fire resistance of a multi-story building constructed using wood. [Solution] The structure comprises a multi-layered building section 100 having members made of wood as its structural element, and a multi-layered core section 200 having fire-resistant walls made of non-combustible material as its structural element, wherein the building section 100 and the core section 200 are connected in the width direction X, and the building section 100 and the core section 200 are formed to communicate with each other.

Description

Technical Field

[0005] ,

[0002] , , , , , , , , , , , , , , , , ,

[0006] ,

[0004] , , , ,

[0003] , ,

[0001] The present invention relates to a fire-resistant building structure and a method for constructing a fire-resistant building.

Background Art

[0002] In the construction field, the use of wood is being promoted for the purpose of effectively utilizing forest resources and fixing carbon dioxide. In particular, buildings using general circulation materials, which are common wood products, not only more suitably promote the effective utilization of forest resources and carbon dioxide fixation, but also contribute to the utilization of local wood and the revival of the wood industry.

[0003] On the other hand, structures in the construction field are required to have a non-combustion performance such that combustion stops automatically after a fire according to the fire resistance performance standards defined by the Building Standards Law. In particular, strict fire resistance performance standards are applied to buildings constructed in multiple layers of four stories or more. Therefore, conventionally, when wood is adopted for a structure, fire resistance performance conforming to the fire resistance performance standards is ensured by measures such as coating with a fire-retardant material or using a composite material with a fire-retardant material.

[0004] For example, Patent Document 1 ensures fire resistance performance by applying a non-combustible coating to a structure constructed from steel beams and columns and wooden floors and walls.

[0005] Also, for example, Patent Document 2 ensures fire resistance performance by using a non-load-bearing wall made of a composite material having a wooden layer on the surface of a non-combustible material.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, even when using special components with non-combustible coatings or composite materials, it is not possible to guarantee a certain level of fire resistance. Therefore, conventional technology has the problem of not being able to guarantee the fire resistance of multi-layered buildings constructed using wood.

[0008] The present invention aims to provide a fire-resistant building structure and a method for constructing a fire-resistant building that ensures the fire resistance performance of a multi-story building constructed using wood. [Means for solving the problem]

[0009] To achieve the above objectives, the present invention provides the following means. The fire-resistant building structure of the present invention comprises a multi-layered building section having members formed from wood as its structural element, and a multi-layered core section having fire-resistant walls formed from non-combustible material as its structural element, wherein the building section and the core section are connected in the horizontal direction, and the interior of the building section and the core section are formed to communicate with each other.

[0010] In the fire-resistant building structure of the present invention, the core portion may have at least one deck that leads to the outside.

[0011] In the fire-resistant building structure of the present invention, the deck comprises a deck floor and deck columns, one end of the deck column is connected to the ground and the other end is connected to the lower part of the deck floor, and the deck column may have a plurality of column diagonal members that extend in a branch-like manner from the middle part toward the deck floor.

[0012] In the fire-resistant building structure of the present invention, the wood may be wood that meets general fire-resistant standards, or general-purpose, commercially available wood.

[0013] In the fire-resistant building structure of the present invention, the core structure comprises a fire-resistant wall and a core floor, the fire-resistant wall is constructed by connecting a plurality of rectangular parallelepiped concrete core units that are connected in the height and width directions, the sides of the core units parallel to the width direction are provided with a plurality of fastening parts arranged at different heights, and may be connected to the core floor via any of the plurality of fastening parts.

[0014] In the fire-resistant building structure of the present invention, the deck is equipped with deck piping, one end of which is connected to a fire-fighting water tank and the other end to the interior of the core section, the fire-fighting water tank is equipped with a supply means for supplying the stored water stored inside to the deck piping, and the stored water may be supplied to the interior of the core section via the deck piping.

[0015] In the fire-resistant building structure of the present invention, the core floor section is formed from a fire-resistant floor or a member equipped with floor piping inside, and the floor piping may be connected at one end to the deck piping and at the other end to the fire-fighting water tank, with the stored water flowing through it.

[0016] The present invention provides a method for constructing a fire-resistant building, which involves constructing a large-scale structure by alternately connecting multiple rectangular building sections, each constructed in multiple layers and having members made of wood as structural components, and rectangular core sections, each constructed in multiple layers and having fire-resistant walls made of non-combustible materials as structural components, in the horizontal direction.

[0017] In the fire-resistant building construction method of the present invention, each of the multiple core sections may have a deck that leads to the outside. [Effects of the Invention]

[0018] According to the present invention, it is possible to provide a fire-resistant building structure and a method for constructing a fire-resistant building that ensures the fire resistance performance of a multi-story building constructed using wood. [Brief explanation of the drawing]

[0019] [Figure 1]A perspective view of a fire-resistant building structure according to an embodiment of the present invention is shown. [Figure 2] A two-view drawing of a deck according to an embodiment of the present invention is shown. [Figure 3] A three-view drawing of a core unit according to an embodiment of the present invention is shown. [Figure 4] A front view of a first floor of a core part according to an embodiment of the present invention is shown. [Figure 5] A plan view of a floor without a deck in a core part according to an embodiment of the present invention is shown. [Figure 6] A plan view of a floor with a deck in a core part according to an embodiment of the present invention is shown. [Figure 7] An A-A cross-sectional view of a core part according to an embodiment of the present invention is shown. [Figure 8] A perspective view showing a method of constructing a fire-resistant building according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0020] The fire-resistant building structure 1 of the present invention will be described with reference to FIGS. 1-7. FIG. 1 is a perspective view of a fire-resistant building structure 1 according to an embodiment. The fire-resistant building structure 1 of the present embodiment is a structure related to a rectangular building in plan view, constructed by connecting a building part 100 and a core part 200. In the embodiment, three directions of the fire-resistant building structure 1, namely the width direction X, the depth direction Y, and the height direction Z, are defined. Also, in the embodiment, when there is no special description, the connection between members is assumed to be connected by a general method using welding or connectors.

[0021] The building part 100 is a rectangular building in plan view with a one-hour semi-fire-resistant structure constructed in multiple layers using wood. The core part 200 is a rectangular building in plan view constructed in multiple layers by connecting a plurality of core units 210 made of precast concrete. The outer walls of the core section 200 parallel to the depth direction Y (first core outer wall 250, second core outer wall 260) are also used as outer walls of the building section 100 parallel to the depth direction Y. Therefore, the building section 100 and the core section 200 are connected via the outer walls. In addition, in the height direction Z, the building section 100 and the core section 200 are constructed in multiple layers such that they are at approximately the same interval and position. Therefore, the building section 100 and the core section 200 are constructed as a single building.

[0022] The core section 200 is provided with a deck 300 on one of its layers. This deck 300 forms a path from the inside of the core section 200 to the outside 600 of the fire-resistant building structure 1. In this embodiment, the floor to which deck 300 is connected is defined as the deck connection floor 420. The floor to which deck 300 is not connected is defined as the base floor 410.

[0023] Figure 2 is a two-view drawing of the deck 300 according to the embodiment. Figure 2(a) shows a plan view of the deck 300, and Figure 2(b) shows a cross-sectional view AA of the deck 300. The deck 300 is a structure similar to a pedestrian bridge made of steel. This deck 300 has deck columns 310, a circular deck floor 320, deck piping 330, and a deck outer wall 340. In addition, a fire-fighting water tank 500, which is part of the fire-resistant building structure 1, is located beneath the deck 300.

[0024] The deck column 310 has a main column member 311 and a plurality of column diagonal members 312. The main column member 311 is a cylindrical steel member with one end connected to the ground 610 and the other end connected to the bottom center 361 of the deck bottom 360. The size of the main column member 311 in the height direction Z is set so that the height of the deck floor 320 is approximately the same as the height of the deck connecting floor 420.

[0025] The column diagonal member 312 is a steel member with one end connected to the column intermediate section 313 of the main column member 311 and the other end connected to the deck bottom 360. The column diagonal member 312 has a three-pronged shape that widens from one end to the other. In the radial direction of the deck floor 320, the other end of the column diagonal member 312 is connected to three points: a second connection point 372 located midway between the center and the outer periphery of the deck floor 320, a first connection point 371 located towards the center, and a third connection point 373 located towards the outer periphery. In addition, multiple column diagonal members 312 are arranged at four equally spaced radial locations centered on the deck floor 320. Therefore, the deck columns 310 are formed in a branch-like shape and are provided to support the weight of the entire deck 300.

[0026] The deck floor section 320 has a main deck material 321 and a grating 323. The main deck material 321 is a board-shaped flooring material made of wood. In the height direction Z, this main deck material 321 is installed so as to be approximately the same as the floor of the deck connecting floor 420. Furthermore, the end of the main deck material 321 has a connection area 380a on the core section 200 side and a connection area 380b on the exterior 600 side. The connection area 380a is connected to the inside of the core section 200. The connection area 380b is connected to the exterior 600. Furthermore, in the radial direction, the main deck member 321 has a circular concave drainage groove 322 formed on its outer circumference, beyond the connection point with the column diagonal member 312.

[0027] The deck exterior wall 340 is a glass exterior wall. This deck exterior wall 340 is installed outside the deck floor 320, excluding the connection areas 380a and 380b.

[0028] The grating 323 is a mesh-like cover for the steel drainage channel 322. The grating 323 has a female-side fitting shape for the drainage channel 322. The grating 323 is also divided into multiple curved sections, and when connected together it forms a circle. In this case, in the height direction Z, the thickness of the grating 323 is formed to be approximately the same height as the main deck material 321 when installed in the drainage channel 322.

[0029] The deck piping 330 is a steel pipe that is supported by the deck columns 310 and is designed to allow rainwater and other liquids to flow through it. This deck piping 330 has a supply pipe 331 and a plurality of storage pipes 332. One end of the supply pipe 331 and the plurality of storage pipes 332 are located inside the fire-fighting water tank 500. The fire-fighting water tank 500 is a fire-fighting system in a building, containing stored water 510. This fire-fighting water tank 500 is equipped with a supply means 520 to supply the stored water 510. The supply means 520 is, for example, a liquid transport machine such as a pump. The stored water 510 is water such as rainwater.

[0030] The supply pipe 331 is connected at one end to the supply means 520 and at the other end to the inside of the core section 200. The supply pipe 331 is positioned to be supported by the column diagonal member 312 located closest to the core section 200. The supply pipe 331 is also configured to allow the supply means 520 to supply the stored water 510 from the fire-fighting water tank 500 to the inside of the core section 200.

[0031] The storage pipe 332 has one end positioned inside the fire-fighting water tank 500 and the other end connected to the drainage channel 322. Multiple storage pipes 332 are arranged to be supported by multiple column diagonal members 312, except for the column diagonal member 312 closest to the core section 200. In addition, the storage pipes 332 are connected to the bottom of the drainage channel 322 in the same direction as the column diagonal members 312 in the radial direction of the deck floor section 320, so that rainwater and other liquids in the drainage channel 322 can flow through. Therefore, rainwater that falls on the deck floor 320 is guided to the drainage channel 322 and stored inside the fire-fighting water tank 500 via the storage pipe 332. Furthermore, if the amount of water stored in the fire-fighting water tank 500 overflows, a device is provided to forcibly discharge the stored water 510 to the outside.

[0032] This configuration allows the deck 300 to form a path connecting the inside and outside 600 of the core 200, storing rainwater inside the fire-fighting water tank 500 and supplying the stored water 510 to the inside of the core 200.

[0033] Figure 3 shows three views of the core unit 210 according to the embodiment. Figure 3(a) is a top view, Figure 3(b) is a front view, and Figure 3(c) is a side view. The core unit 210 is a precast concrete unit formed in a rectangular parallelepiped shape. This core unit 210 has two floor connection surfaces 220 that connect to the flooring material, two vertical connecting surfaces 230 perpendicular to the height direction Z, and two left and right connecting surfaces 240 that are parallel to the height direction Z and perpendicular to the floor connection surfaces 220. Therefore, the floor connection surfaces 220 are surfaces parallel to the depth direction Y in Figure 1.

[0034] The floor connection surface 220 has multiple female threads (fastening parts) 221. The female threads 221 are threaded metal fittings that were inserted into the floor connection surface 220 during the molding of the core unit 210. These female threads 212 are located at three locations on the floor connection surface 220 in the height direction Z: the center, the upper side, and the lower side. In addition, female threads 221 are provided on each of the two floor connection surfaces 220.

[0035] In multiple core units 210, the upper and lower connecting surfaces 230 are provided to be connectable to each other, and the left and right connecting surfaces 240 are provided to be connected to each other. Therefore, multiple core units 210 can be connected to each other. The core section 200 is constructed by connecting multiple core units 210.

[0036] Figure 4 shows a front view of the deck connection floor 420 of the core section 200 according to the embodiment. The core section 200 includes a first core outer wall 250, a second core outer wall 260, and a core floor section 270. The first core exterior wall 250 is one of the exterior walls of the core section 200, constructed by connecting multiple core units 210. The second core exterior wall 260 is also one of the exterior walls of the core section 200, constructed by connecting multiple core units 210. The first core outer wall 250 and the second core outer wall 260 are arranged in parallel and connected via the core floor section 270 to construct the core section 200.

[0037] The core floor section 270 is a flooring material made of wood, with floor piping 271 inside. The floor piping 271 is the same type of piping as the supply piping 331. The core floor section 270 also has support plates 272 at both ends. These support plates 272 are metal fittings used to connect the structure.

[0038] The support plate 272 has a floor side surface 272a through which screws 273 can be inserted, and a wall side surface 272b through which bolts 274 can be inserted. The floor side surface 272a and the wall side surface 272b are formed perpendicular to each other, and one end of each side is continuous. The support plate 272 is positioned such that its floor side surface 272a abuts against the lower ends of both ends of the core floor portion 270, and its wall side surface 272b abuts against the first core outer wall 250 or the second core outer wall 260. The support plate 272 is fixed to the core floor portion 270 by driving screws 273 into the core floor portion 270 from the floor side surface 272a. The support plate 272 is also connected to the first core outer wall 250 and the second core outer wall 260 by inserting bolts 274 through the wall side surface 272b of the support plate and fastening them with female threads 221. At this time, the female threads 221 to which the support plate 272 connects are selected from among multiple female threads 221 that are positioned appropriately.

[0039] One end of the floor piping 271 is connected to the supply piping 331, and it is installed so that the stored water 510 flows through it. The other end of the floor piping 271 branches off and is connected to fire extinguishing equipment (for example, an indoor fire hydrant) and a fire water tank 500 inside the core section 200. The floor piping 271 connected to the fire extinguishing equipment is installed so that the stored water 510 can be supplied for fire extinguishing. The floor piping 271 connected to the fire water tank 500 discharges the stored water 510 into the fire water tank 500. Therefore, the stored water 510 is arranged to circulate between the inside of the core section 200 and the fire-fighting water tank 500 via the deck 300.

[0040] The core floor section 270 is equipped with multiple floor pipes 271 inside. Furthermore, this core floor section 270 may be formed from CLT (cross-laminated timber), which is a laminated body of wood, and may have multiple floor pipes 271 arranged in parallel inside. As a result, the core floor section 270 is cooled by the stored water 510 flowing inside the floor pipes 271, thereby ensuring fire resistance. In addition, since the core floor section 270 is cooled by the stored water 510 even during normal times, it may be used as a radiant air conditioning system.

[0041] Figure 5 shows a floor plan of the standard floor 410 according to this embodiment. The core section 200 is constructed by connecting the left and right connecting surfaces 240 of multiple core units 210 to form the first core exterior wall 250 and the second core exterior wall 260, etc. One of the exterior walls of the core section 200 parallel to the width direction X is not fitted with a core unit 210 because a balcony is formed therefrom for the purpose of lighting and design. Furthermore, the core section 200 is equipped with a staircase 281 and an elevator 282 as means of moving up and down, and a path is formed that allows movement in the height direction Z without going through the building section 100. The staircase 281 is located in the center of the core section 200, and the elevator 282 is located on the other outer wall of the core section 200 which is parallel to the width direction X.

[0042] The building section 100 has a building section exterior wall 110 and a building floor section 120. Here, the first core exterior wall 250 and the second core exterior wall 260, which are exterior walls parallel to the depth direction Y, are connected to the building floor section 120 in the same manner as the core floor section 270 via female threads 221 located on the building section 100 side. Therefore, the first core exterior wall 250 and the second core exterior wall 260 serve not only as exterior walls of the core section 200 but also as exterior walls of the building section 100.

[0043] The first core outer wall 250 and the second core outer wall 260 each have two outer wall openings, the first outer wall opening 251 and the second outer wall opening 261. These first and second outer wall openings are formed by partially omitting core units 210 in the arrangement of multiple core units 210 that make up the first and second core outer walls 250 and the second core outer wall 260. Furthermore, the first and second outer wall openings 251 and the second outer wall opening 261 are located at the same position in the depth direction Y. Here, the building floor 120 and the core floor 270 are connected via the first and second outer wall openings 251 and the second outer wall opening 261, forming a continuous floor surface.

[0044] Therefore, the building section 100 and the core section 200 at the standard floor 410 are connected via the first core exterior wall 250 and the second core exterior wall 260, and are provided to communicate internally through the first exterior wall opening 251 and the second exterior wall opening 261.

[0045] Figure 6 shows a plan view of the deck connecting floor 420 according to the embodiment. Unless otherwise specified, the deck connection floor 420 is defined as having the same configuration as the standard floor 410.

[0046] On the deck connection floor 420, one of the outer walls of the core section 200, which is parallel to the width direction X, does not have a balcony, and a deck 300 is provided on it. Also, on the deck connection floor 420, one end of the core floor section 270 on the deck 300 side is connected to one end of the deck floor section 320, forming substantially the same floor surface. Here, since the building floor 120 and the core floor 270 form a continuous floor surface, the building 100, the core 200, and the deck 300 have a path that communicates with each other in the planar direction.

[0047] Figure 7 shows a cross-sectional view AA of the core portion 200 according to the embodiment. A path is formed in the height direction Z between the standard floor 410 and the deck connecting floor 420 of the core section 200 by the means of raising and lowering stairs 281 and elevator 282. Therefore, all layers of the building section 100 and the core section 200 have a path that communicates with the exterior 600 of the fire-resistant building structure 1 via the deck 300.

[0048] The fire-fighting water tank 500 is installed from underground beneath the core section 200 to the lower end of the deck column 310. Therefore, even when the deck 300 is located at a distance from the core section 200, the storage of water 510 in the fire-fighting water tank 500 via the storage piping 332 and the supply of water 510 from the fire-fighting water tank 500 via the supply piping 331 can still function.

[0049] Therefore, it was shown that the fire-resistant building structure 1 has a fire-fighting structure in which all layers have a path that communicates with the outside 600 of the fire-resistant building structure 1 via a deck 300 provided in the core section 200, and stored water 510 stored in the fire-fighting water tank 500 is supplied to the fire-fighting equipment.

[0050] Next, the fire-resistant building construction method 2 of the present invention will be described with reference to Figure 8. Figure 8 is a perspective view showing the fire-resistant building construction method 2 according to an embodiment. Method 2 for constructing fire-resistant buildings constructs a large building in the width direction X by arranging building sections 100 and core sections 200 alternately and connecting them. This connection is possible because the floor connection surface 220 of the core unit 210 can be connected to the building floor section 120 and the core floor section 270, respectively.

[0051] Multiple core sections 200 each have a deck 300. Between adjacent decks 300, a deck bridge section 350 is provided. The deck bridge section 350 is a rectangular structure in plan view that connects deck floor sections 320 and has a floor surface on top. Both ends of the deck bridge section 350 are connected to two decks 300 such that the floor surface of the deck bridge section 350 is at approximately the same position as the deck floor section 320 in the height direction Z. Therefore, the multiple decks 300 of the fire-resistant building construction method 2 have interconnected paths.

[0052] Therefore, it was demonstrated that the fire-resistant building construction method 2, while being a large-scale wooden building, possesses the same fire-resistant structure as the fire-resistant building structure 1.

[0053] As described above, the fire-resistant building structure 1 according to this embodiment is a structure relating to a building that is rectangular in plan view, constructed by connecting a building section 100 and a core section 200. The building section 100 is a rectangular building in plan view, constructed in multiple layers using wood, and is a 1-hour semi-fire-resistant structure. The core section 200 is a rectangular building in plan view, constructed in multiple layers by connecting multiple core units 210, which are made of precast concrete. The building section 100 and the core section 200 are connected so as to be arranged in parallel in the width direction X. The building section 100 and the core section 200 are connected via a first core outer wall 250 and a second core outer wall 260, and their interiors are connected by a first outer wall opening 251 and a second outer wall opening 261. Therefore, the fire-resistant building structure 1 can ensure high fire resistance by having a structure in which the core section 200 compensates for the fire resistance performance lacking in the building section 100. Thus, by expanding the uses of wood and increasing demand, it contributes to the revitalization of the wood industry and the promotion of CO2 sequestration. In addition, cost reductions can be achieved by reducing the difficulty of design and construction. Furthermore, the design, in which the core section 200 is exposed, encourages increased disaster prevention awareness among users and contributes to improving the disaster prevention capabilities of cities.

[0054] In the fire-resistant building structure 1 according to this embodiment, the core section 200 is provided with a deck 300 on one of its layers. In the height direction Z, the main deck member 321 is provided to be at approximately the same height as the floor of the deck connection floor 420. Furthermore, one end of the main deck member 321 is connected to the interior of the core section 200, and the other end is provided to be connected to the exterior 600. Therefore, the fire-resistant building structure 1, by having a deck 300 connected to the fire-resistant core 200, ensures high fire resistance performance because it is possible to escape to the outside 600 from any floor in a short time in the event of a fire or other incident.

[0055] In the fire-resistant building structure 1 according to this embodiment, the deck 300 has deck columns 310, a circular deck floor 320, and deck piping 330. The main column member 311 is a cylindrical steel material with one end connected to the ground 610 and the other end connected to the bottom center 361 of the deck bottom 360. In the radial direction of the deck floor 320, the other end of the column diagonal member 312 is connected to three locations: a second connection point 372 located midway between the center and the outer periphery of the deck floor 320, a first connection point 371 located towards the center, and a third connection point 373 located towards the outer periphery. In addition, multiple column diagonal members 312 are arranged at four locations in a radial pattern at equal intervals centered on the deck floor 320. Thus, the deck columns 310 are formed in a branch-like shape and are equipped to support the weight of the entire deck 300. Therefore, deck 300 can construct a large floor area on the deck connection floor 420 without occupying ground space.

[0056] In the fire-resistant building structure 1 according to this embodiment, the building section 100 is a rectangular building in plan view, constructed in multiple layers using wood, and has a 1-hour semi-fire-resistant structure. Therefore, since the building section 100 can ensure fire resistance without using flame-retardant coatings or composite materials, it is possible to use readily available, general-purpose materials. Thus, the building section 100, using conventional technology, can more effectively contribute to the revitalization of the timber industry and the promotion of CO2 sequestration.

[0057] In the fire-resistant building structure 1 according to this embodiment, the core section 200 is constructed by connecting a plurality of core units 210. Each core unit 210 has a plurality of female threads 221. These female threads 221 are located at three locations in the height direction Z of the floor connection surface 220: the center, the upper side, and the lower side. The support plate 272 provided on the deck floor section 320 is connected to the core unit 210 by fastening it with the female threads 221. At this time, the female threads 221 to which the support plate 272 connects are selected from among the plurality of female threads 221 that are located in suitable positions. Therefore, the core section 200 can be easily constructed by the core unit 210. Thus, the fire-resistant building structure 1 can achieve cost reduction by more effectively reducing the difficulty of design and construction.

[0058] In the fire-resistant building structure 1 according to this embodiment, the deck piping 330 has a supply pipe 331 and a plurality of storage pipes 332. One end of the supply pipe 331 and the plurality of storage pipes 332 are located inside the fire-fighting water tank 500. The fire-fighting water tank 500 is equipped with a supply means 520 and is configured to supply stored water 510. The supply pipe 331 is configured to supply stored water 510 from the fire-fighting water tank 500 to the inside of the core section 200 by the supply means 520. Therefore, the fire-resistant building structure 1 can ensure its fire resistance by providing fire extinguishing means.

[0059] In the fire-resistant building structure 1 according to this embodiment, the core floor section 270 is a flooring material made of wood, equipped with floor piping 271 inside. One end of the floor piping 271 is connected to a supply pipe 331, and is provided to allow stored water 510 to flow through it. The other end of the floor piping 271 branches off and is connected to fire extinguishing equipment (e.g., an indoor fire hydrant) and a fire water tank 500 inside the core section 200. The floor piping 271 connected to the fire extinguishing equipment is provided to supply the stored water 510 for fire extinguishing. The floor piping 271 connected to the fire water tank 500 discharges the stored water 510 into the fire water tank 500. Therefore, the fire-resistant building structure 1 can ensure fire resistance by providing a core floor section 270 through which stored water 510 flows.

[0060] The fire-resistant building construction method 2 according to this embodiment constructs a large building in the width direction X by alternately arranging building sections 100 and core sections 200 and connecting them together. This connection is possible because the floor connection surface 220 of the core unit 210 can be connected to the building floor section 120 and the core floor section 270, respectively. Although the fire-resistant building construction method 2 is a large wooden building, it has a fire prevention structure similar to that of the fire-resistant building structure 1. Therefore, the fire-resistant building construction method 2 contributes to the revitalization of the timber industry and the promotion of CO2 sequestration by expanding the uses of wood and increasing demand. In addition, cost reductions can be achieved by reducing the difficulty of design and construction. Furthermore, the design, which exposes the core section 200, encourages increased disaster prevention awareness among users and contributes to improving the disaster prevention capabilities of cities.

[0061] In the fire-resistant building construction method 2 according to this embodiment, each of the multiple core sections 200 has a deck 300. Between adjacent decks 300, a deck bridge section 350 is provided. Thus, the multiple decks 300 in the fire-resistant building construction method 2 have a connecting path. Therefore, in the event of a fire or other incident, the fire-resistant building construction method 2 ensures high fire resistance performance because it allows for quick escape to the outside 600 from any of the multiple layers provided.

[0062] The embodiments of the fire-resistant building structure 1 and the fire-resistant building construction method 2 according to the present invention have been described above. However, the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention.

[0063] In the present invention, the installation position of the deck 300 is not restricted. For example, the deck 300 may be positioned directly above a walkway laid in front of the fire-resistant building structure 1. In this case, since the deck 300 occupies a small area on the ground, it can be positioned without obstructing the walkway. Furthermore, since the deck 300 can also serve as an overhang for the fire-resistant building structure 1, it can provide a more suitable environment.

[0064] In the present invention, the deck 300 may be connected to multiple layers of the core portion 200. For example, the deck 300 may be positioned at a height between the fourth and fifth layers of the core section 200. In this case, the deck floor section 320 may be connected to the fourth and fifth layers, respectively. This allows for a more favorable provision of a route between the interior and exterior 600 of the fire-resistant building structure 1, improving evacuation efficiency in the event of a fire or other emergency.

[0065] In the present invention, the deck 300 may be connected to a plurality of core sections 200. For example, the deck 300 may be connected to the fourth layer of each of two adjacent core sections 200. In that case, the deck 300 is positioned midway between the two core sections 200 in the width direction X. This allows for a reduction in the number of decks 300 to be installed while ensuring a path between the interior and exterior 600 of the fire-resistant building structure 1, thereby achieving cost savings.

[0066] In the present invention, the core portion 200 may comprise a plurality of decks 300. For example, the core section 200 may have decks 300 on the 4th and 8th layers. In this case, the deck 300 may have two deck floor sections 320 for each deck column 310. This allows for a more suitable provision of routes between the interior and exterior 600 of the fire-resistant building structure 1, improving evacuation efficiency in the event of a fire or other disaster. Furthermore, even when the fire-resistant building structure 1 has more layers, providing multiple decks 300 in the height direction Z allows for the suitable construction of evacuation routes in the event of a fire or other disaster.

[0067] In this invention, the configuration of the building section 100 is not limited as long as an evacuation route can be secured in the event of a fire or the like. Furthermore, the building sections 100, which are arranged in multiple locations in the width direction X, may each have a different configuration. For example, the building section 100 may be constructed in a multi-story structure with wider spacing (higher floor heights) in the height direction Z than the core section 200. In this case as well, all floors of the building section 100 are provided with paths that communicate with the core section 200, thereby enabling the construction of suitable evacuation routes in the event of a fire or other incident.

[0068] In this invention, the configuration of the core section 200 is not limited as long as an evacuation route can be secured in the event of a fire or the like. Furthermore, the building sections 100, which are arranged in multiple locations in the width direction X, may each have a different configuration. For example, the core section 200 is a disaster prevention facility equipped with connecting passages and stairs that connect to the building section 100, and does not necessarily have interior finishing. Furthermore, for example, the first core outer wall 250, the second core outer wall 260, and the core floor section 270 may be constructed from concrete poured on site. Even in these cases, the core section 200 can provide an evacuation route in the event of a fire or other emergency.

[0069] In this invention, the building section 100 and the core section 200 are not restricted in shape, as long as an evacuation route is secured in the event of a fire or the like. For example, the building section 100 and the core section 200 may have curved surfaces in a plan view. In that case, at the connection point between the building section 100 and the core section 200, the exterior wall shape of the building section 100 and the exterior wall shape of the core section 200 are formed in a shape that allows them to overlap and are connected. Thus, fire resistance can be ensured in the same manner as in the embodiment.

[0070] In this invention, the fire extinguishing equipment within the core portion 200 may be exposed and incorporated as part of the design. For example, the piping connecting the floor piping 271 to the fire extinguishing equipment may be located on the side of the staircase 281 and may be exposed. This exposed piping, together with the exterior wall constructed by the core unit 210, serves as a design feature to indicate that the core section 200 also functions as a fire prevention facility. Thus, the fire-resistant building structure 1, through the design of the interior of the core section 200, can encourage fire prevention awareness among users and contribute to improving the disaster prevention capabilities of the city.

[0071] In the present invention, the core unit 210 may have a female thread 221 on only one of the two floor connection surfaces 220. For example, one of the two floor connection surfaces 220 may have a female thread 221, and the other may be provided to be connectable. In this case, the first core outer wall 250 and the second core outer wall 260 have two core units 210 connected in the width direction X. Thus, the building section 100 and the core section 200 can be connected via the other floor connection surface 220. Furthermore, for example, in the outer wall of the core section 200 where there are no adjacent building sections 100, a core unit 210 may be used in which one of the two floor connection surfaces 220 has a female thread 221 and the other is installed in a manner that allows for continuous installation. In this case, the design is improved because the exposed surface of the building does not have a female thread 221. [Explanation of Symbols]

[0072] 1. Fire-resistant building structure 2. Methods for constructing fire-resistant buildings X Width direction Z (height direction) 100 Building Department 200 Core section 210 Core Units 221 Female thread (fastening part) 270 Core floor section 300 decks 310 Deck pillars 312 Column diagonal material 320 Deck floor 330 Deck Piping 500 Fireproof water tank 510 Storage water 520 Supply means 600 External

Claims

1. A building section constructed in multiple layers, having structural members made from wood, The structure includes a fire-resistant wall made of non-combustible material, and a multi-layered core section. In the width direction, the building section and the core section are connected, The building section and the core section are formed to communicate with each other. Fire-resistant building structure.

2. The core portion comprises at least one layer of a deck that is open to the outside. The fire-resistant building structure according to claim 1.

3. The aforementioned deck comprises a deck floor and deck columns, One end of the deck column is connected to the ground, and the other end is connected to the lower part of the deck floor. The aforementioned deck column has multiple diagonal members that extend in a branch-like manner from the middle section toward the deck floor. The fire-resistant building structure according to claim 2.

4. The aforementioned timber is timber that meets general fire-resistant standards, or is a general-purpose, commercially available timber. The fire-resistant building structure according to claim 1.

5. The structure of the core portion comprises the fire-resistant wall and the core floor portion. The fire-resistant wall is constructed by connecting multiple rectangular concrete core units, which are arranged to be connected in both the height and width directions. The side surface of the core unit, which is parallel to the width direction, is provided with a plurality of fastening parts arranged at different heights. The core floor portion is connected via one of the aforementioned multiple fastening portions. The fire-resistant building structure according to claim 3.

6. The aforementioned deck is equipped with deck piping, The deck piping is connected at one end to the fire-fighting water tank and at the other end to the inside of the core section. The fire-fighting water tank is equipped with a supply means for supplying the stored water inside to the deck piping. The stored water is supplied to the inside of the core section via the deck piping. The fire-resistant building structure according to claim 5.

7. The aforementioned core floor section is formed from a fire-resistant floor or a member equipped with floor piping inside. The floor piping is connected at one end to the deck piping and at the other end to the fire-fighting water tank. The interior is provided to allow the stored water to circulate, The fire-resistant building structure according to claim 6.

8. A rectangular building section, constructed in multiple layers and having structural members made of wood, The structure has fire-resistant walls made of non-combustible material, and is constructed in multiple layers, with a rectangular core section. By installing multiple units alternately in the width direction, a large-scale structure can be constructed. Methods for constructing fire-resistant buildings.

9. Each of the aforementioned core sections has a deck built over it that is connected to the outside. A method for constructing a fire-resistant building according to claim 8.

Images