Structure

Abstract

To provide a structure in which strength against wind pressure is appropriately set for each of a plurality of doors arranged along a roadway in the structure.SOLUTION: A distribution warehouse 10 according to an embodiment is a structure including an inner vehicle passage 12 and a plurality of spaces 18 arranged along the inner vehicle passage 12. An outer wall 14 of the distribution warehouse 10 is provided with an opening 16 continuous with the inner vehicle passage 12 and forming an entrance of the distribution warehouse 10, and each of the plurality of spaces 18 is provided with an openable / closable shutter 30 facing the inner vehicle passage 12 and partitioning the inner vehicle passage 12 and the space 18. Further, among the plurality of spaces 18, the strength of the shutter 30 against the wind pressure is higher in the first space than in the second space farther away from the opening 16 than the first space.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a structure, and more particularly to a structure having a roadway and a plurality of spaces arranged along the roadway inside. [Background technology]

[0002] Structures such as buildings with internal roadways are already known, one example of which is the structure described in Patent Document 1. The structure described in Patent Document 1 is a logistics warehouse with internal roadways, and more specifically, a rampway warehouse equipped with a ramp section (rampway).

[0003] Inside a rampway warehouse, multiple spaces are typically arranged along the roadway. Each space faces the roadway and is used by various tenants to store commercial materials and other supplies. In addition, shutters or other doors may be located at the boundary between the roadway and each space, meaning that multiple doors may be lined up along the roadway. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2022-136694 Summary of the Invention [Problem to be solved by the invention]

[0005] In a structure with an internal roadway, openings for vehicles to enter and exit the structure are provided in the exterior wall of the structure, and the openings are continuous with the roadway inside the structure. Therefore, wind from outside the structure may blow into the structure through the openings and flow along the roadway. In such cases, wind loads, specifically wind pressure, act on each of the multiple doors lined up along the roadway, so it is necessary to appropriately design the strength of the doors against wind pressure.

[0006] However, there are not enough examples of evaluations or research reports on wind pressure inside structures, and as a result, until now, there have been no clear standards (including laws, regulations, or guidelines) regarding wind-resistant design for doors located inside structures that have roadways.

[0007] On the other hand, while it may be possible to prioritize safety by setting a high level of wind pressure strength for each of the multiple doors placed inside the structure, this would increase fixed costs, i.e., the cost of constructing the structure. Also, if cost is prioritized and the strength of each of the multiple doors is set to the same level as that of a typical interior door, there is a possibility that the wind pressure resistance will not be sufficiently ensured, and there is a risk that the doors will break down or be damaged if the wind load (wind pressure) blowing into the structure becomes abnormally high, such as during a strong wind.

[0008] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its object is to provide a structure in which the strength against wind pressure is appropriately set for each of multiple doors lined up along the roadway within the structure. [Means for solving the problem]

[0009] The above problem is solved by the structure of the present invention, which is a structure that has inside it a roadway and a plurality of spaces lined up along the roadway, wherein an opening that is continuous with the roadway and serves as an entrance and exit for the structure is provided in the outer wall of the structure, and each of the plurality of spaces is provided with an openable door that faces the roadway and separates the roadway from the space, and wherein the door in a first space among the plurality of spaces has a higher strength against wind pressure than a second space that is farther from the opening than the first space.

[0010] In the structure of the present invention having the above configuration, the strength against wind pressure of each door of a plurality of spaces lined up along a roadway can be set appropriately, that is, to ensure sufficient strength while not being excessively strong. This makes it possible to improve the quality of the structure and reduce construction costs while ensuring safety inside the structure.

[0011] In addition, in the structure of the present invention, the roadway within the structure may extend linearly, and the door of the space closest to the opening among the plurality of spaces may have the highest strength against wind pressure. According to the above configuration, the strength of the doors of each space can be appropriately set, taking into consideration that the greatest wind pressure acts on the door of the space closest to the opening among multiple spaces lined up along the roadway.

[0012] The structure of the present invention may have a plurality of floors, each of which may be provided with a driveway, a plurality of spaces, and an opening. In this case, it is preferable that the doors of the spaces on each floor are arranged at the same horizontal position across the plurality of floors, and that the strength of the door of the second space on the top floor is greater than the strength of the doors of the second spaces on the floors below the top floor. According to the above configuration, the strength against wind pressure can be appropriately set for each door of a plurality of spaces provided on each floor, taking into consideration differences in wind pressure distribution due to differences in floors.

[0013] In the structure of the present invention, an outer carriageway that is continuous with each of the carriageways on the plurality of floors through an opening may be disposed outside the structure. Furthermore, the openings disposed on each of the plurality of floors may be connected to connecting portions of the outer carriageway that extend from the spirally extending main body portion toward the opening, on a floor-by-floor basis. According to the above configuration, the strength against wind pressure can be appropriately set for each door of multiple spaces on each floor, taking into account the effect on wind pressure of having an outer driveway (specifically, a rampway) attached to the structure.

[0014] Furthermore, in the structure of the present invention, of the multiple spaces provided on the top floor, the strength of the doors of the spaces that are within a distance L (unit: m) from an opening located on the top floor may be equal to or greater than the first strength, and the strength of the doors of the spaces that are further away than L may be less than the first strength. Here, when the width of the opening located on the top floor is b (unit: m), L / b may be greater than 1 and equal to or less than 3.5. According to the above configuration, the strength against wind pressure can be appropriately set for each door of a plurality of spaces provided on the top floor, taking into consideration the relationship between the position from the opening on the top floor and wind pressure.

[0015] In the structure of the present invention, the outer wall of the structure may include a first wall and a second wall arranged on opposite sides of the roadway, and the first wall may have a first portion and a second portion adjacent to the first portion and located closer to the second wall than the first portion. The outer roadway may extend into a recessed space provided between the first and second portions, and an opening provided in the first wall may be located at the innermost portion of the recessed space. In this case, the above-mentioned L / b may be greater than 1 and less than or equal to 2.5. According to the above configuration, the strength against wind pressure can be appropriately set for each door of multiple spaces on the top floor, taking into consideration the influence of the shape of the structure and the space for locating the outer carriageway on the relationship between the position from the opening on the top floor and wind pressure.

[0016] In addition, in the structure of the present invention, the outer wall of the structure may include a first wall and a second wall arranged on opposite sides of the roadway in the direction in which the roadway extends, and an opening may be provided in each of the first wall and the second wall. According to the above configuration, the strength of each door of multiple spaces lined up along the roadway can be appropriately set according to the distance from the opening in the first wall and the distance from the opening in the second wall.

[0017] The structure of the present invention may also be a logistics warehouse. [Effects of the Invention]

[0018] According to the structure of the present invention, it is possible to realize a structure in which the strength against wind pressure is appropriately set for each of a plurality of doors lined up along the roadway within the structure. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a front view of a structure according to one embodiment of the present invention. [Figure 2] FIG. 1 is a plan view of a structure according to one embodiment of the present invention. [Figure 3] FIG. 1 is a diagram showing the configuration of each floor of a structure according to one embodiment of the present invention, showing the interior of each floor as viewed from directly above. [Figure 4] 1 is a schematic diagram showing the arrangement positions of a plurality of spaces provided on each floor of a structure according to one embodiment of the present invention. FIG. [Figure 5] FIG. 10 is a diagram showing an example of the strength against wind pressure of each of a plurality of doors on each floor of a structure according to one embodiment of the present invention. [Figure 6] FIGS. 6(a) and 6(b) are diagrams showing the measurement results of wind pressure distribution within a structure when the size of the structure is changed. [Figure 7] FIG. 10 is a diagram showing an example of the strength against wind pressure of each of a plurality of doors on each floor of a structure according to a comparative example. [Figure 8] FIG. 10 is a plan view of a structure according to a first modified example of the present invention. [Figure 9] FIG. 10 is a diagram showing an example of the strength against wind pressure of each of a plurality of doors on each floor of the structural body according to the first modified example of the present invention. [Figure 10] FIG. 10 is a front view of a structure according to a second modified example of the present invention. [Figure 11] FIG. 10 is a diagram showing an example of the strength against wind pressure of each of a plurality of doors in a structure according to a second modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] <<Regarding a structure according to one embodiment of the present invention>> Hereinafter, one embodiment of the present invention (hereinafter referred to as the present embodiment) will be described with reference to the accompanying drawings. In the drawings, the configuration of the structure of the present invention is shown in a simplified or schematic form for ease of understanding, and the sizes (dimensions) of the devices and equipment shown in the drawings and the size ratios between the devices are different from the actual ones.

[0021] Furthermore, in this specification, the meanings of "same," "identical," "equal," "uniform," "equally divided," and "equally spaced" may include a range of error generally acceptable in the technical field to which the present invention pertains. Furthermore, in this specification, the meanings of "perpendicular," "orthogonal," and "parallel" may include a range of error generally acceptable in the technical field to which the present invention pertains, and may include deviations of less than a few degrees (e.g., 2 to 3 degrees) from strict perpendicular, orthogonal, and parallel.

[0022] The structure according to this embodiment is a logistics warehouse 10 shown in Figures 1 and 2, which has multiple floors. The logistics warehouse 10 shown in Figure 1 has a four-story structure. As shown in Figure 1, the logistics warehouse 10 is also provided with a rampway 20 (inclined road) as an outer driveway. In other words, the logistics warehouse 10 and the rampway 20 form a so-called rampway warehouse. The configuration of this rampway warehouse (i.e., the logistics warehouse 10 and the rampway 20) is the same as that of a typical rampway warehouse, except for the specifications of the multiple shutters 30, which will be described later.

[0023] The logistics warehouse 10 has a substantially rectangular shape in a plan view, and more specifically, extends horizontally in two mutually orthogonal directions (hereinafter referred to as the X direction and the Y direction). However, the shape (external shape) of the logistics warehouse 10 when viewed from above is not limited to the above shape, and may be a shape other than a rectangle. 3, a roadway (hereinafter referred to as an inner roadway 12) on which vehicles can travel is provided inside each floor of the logistics warehouse 10. The inner roadway 12 on each floor extends linearly along the X direction, and is provided from one end of the logistics warehouse 10 to the other end in the X direction. In other words, the X direction corresponds to the extension direction of the inner roadway 12. Note that the extension direction of the inner roadway 12 is not limited to the X direction, and may be the Y direction.

[0024] The logistics warehouse 10 also has an exterior wall 14, as shown in FIGS. 1 to 3. As shown in FIG. 2, the exterior wall 14 includes a first wall 14a that forms one end of the logistics warehouse 10 in the X direction and a second wall 14b that forms the other end of the logistics warehouse 10 in the X direction. That is, the first wall 14a and the second wall 14b are disposed opposite each other in the X direction. As shown in FIG. 3, an opening 16 is provided in each of the first wall 14a and the second wall 14b. The openings 16 serve as entrances and exits to the logistics warehouse 10 and are provided on each floor. As shown in FIG. 3, the openings 16 on each floor are connected to the inside vehicle lane 12 provided on the same floor as the opening 16. That is, a vehicle that enters each floor of the logistics warehouse 10 through one opening 16 can travel on the inside vehicle lane 12 on the same floor and then exit the logistics warehouse 10 through the opening 16 on the opposite side.

[0025] Furthermore, the openings 16 on each floor can serve as ventilation holes for wind generated outside the logistics warehouse 10 (hereinafter also referred to as outdoors). That is, wind may enter the interior of the logistics warehouse 10 from outdoors through the openings 16. Furthermore, the wind that has flowed into the logistics warehouse 10 flows, for example, in the X direction in the space above the inside roadway 12, and flows out to the outdoors through the opening 16 on the opposite side to the opening 16 that the wind passed through when it entered the logistics warehouse 10.

[0026] In this embodiment, the openings 16 provided in each of the first wall 14a and the second wall 14b are rectangular in shape and are long in the up-down direction (vertical direction), and have a predetermined width (length in the Y direction). The width of the openings 16 is determined according to the width of vehicles entering and leaving the logistics warehouse 10, and is a typical length used for openings for vehicle passage, and is the same width as the inside roadway 12.

[0027] As shown in FIG. 3 , inside each floor of the logistics warehouse 10, a plurality of spaces 18 are arranged in a row along the inside carriageway 12. Each of the spaces 18 is a space used, for example, by a user (tenant) of the logistics warehouse 10 to store inventory of merchandise, materials, and the like. That is, a vehicle entering or exiting the logistics warehouse 10 through the opening 16 travels on the inside carriageway 12 and stops, for example, in front of one of the spaces 18, and the vehicle's occupants load or unload cargo in front of that space 18. This allows the vehicle to transport merchandise, materials, and the like stored in the space 18 where it is parked to a predetermined location, or to bring in new merchandise, materials, and the like and store them in the space 18.

[0028] In this embodiment, the number of spaces 18 arranged in a row along the inner carriageway 12 on each floor is common among multiple floors; in other words, as can be seen from Figures 3 and 4, the same number of spaces 18 are arranged on each floor. In the following, for the purpose of providing a more specific explanation, an example will be described in which the number of spaces 18 arranged on each floor is 14. However, the number of spaces 18 arranged on each floor is not particularly limited, and the configuration described below can also be applied to cases in which the number of spaces 18 on each floor is other than 14.

[0029] Incidentally, the logistics warehouse 10 of this embodiment has a substantially symmetrical structure with respect to the center position of the logistics warehouse 10 in the X direction. In other words, of the 14 spaces 18 on each floor, the seven spaces 18 arranged on one side in the X direction and the seven spaces 18 arranged on the other side have a symmetrical structure. 4, of the 14 spaces 18 on each floor, the seven spaces 18 arranged on one side and the seven spaces 18 arranged on the other side are numbered #1 to #7 in order from the space 18 closest to the opening 16. For example, the shutter 30 closest to the opening 16 is assigned the number #1, and the shutter 30 farthest from the opening 16 is assigned the number #7.

[0030] 3, in this embodiment, a plurality of spaces 18 may be arranged on both sides of the inner lane 12 in the Y direction, or a plurality of spaces 18 may be arranged on only one side of the inner lane 12. In the case where a plurality of spaces 18 are arranged on both sides of the inner lane 12 in the Y direction, the number of spaces 18 arranged on one side as viewed from the inner lane 12 may be the same as or different from the number of spaces 18 arranged on the other side. A partition such as a wall or a partition may be provided between two spaces 18 adjacent to each other in the X direction, or the two spaces 18 may be continuous (integrated) without a partition.

[0031] In this embodiment, pillars (not shown) are erected at regular intervals along the inside lane 12, and each of the multiple spaces 18 is defined by two pillars adjacent to each other in the X direction. That is, the width (length in the X direction) of each space 18 corresponds to the arrangement interval (pitch) of the pillars in the X direction.

[0032] 3, on each floor, a shutter 30 serving as a door that can be opened and closed in the up-down direction (vertical direction) is provided for each of the multiple spaces 18. The shutter 30 is configured by a shutter having a known structure, faces the inside carriageway 12, and separates the inside carriageway 12 from the space 18. The size of the shutter 30 for each space 18 corresponds to the size of the space 18, and more specifically, the shutter 30 for each space 18 has a width in the X direction that is approximately equal to the distance (pitch) between the two pillars that define the space 18. The material of the shutter 30 is not particularly limited, but may be a metal material such as aluminum, iron, or stainless steel, or a non-metal material (specifically, wood, cloth, or resin material). Also, a shutter 30 made of a combination of a metal material and a non-metal material may be used.

[0033] Furthermore, in this embodiment, the shutter 30 is used as an example of a door, but this is not limited thereto, and any door other than the shutter 30 may be used as long as it can separate the inside carriageway 12 from each space 18 and can be opened and closed. Furthermore, the opening and closing direction of the door is not limited to the vertical direction, but may also be the horizontal direction.

[0034] As mentioned above, of the multiple (14) spaces 18 on each floor, the seven spaces 18 arranged on one side in the X direction and the seven spaces 18 arranged on the other side have a symmetrical structure. Therefore, in Fig. 6, which will be described later, and Figs. 8 and 10 corresponding to Fig. 6 (Figs. 8 and 10 are diagrams showing modified examples), when the multiple (14) shutters 30 installed on each floor are divided into two equal parts in the X direction, only the seven shutters 30 included in one half are shown.

[0035] As described above, the logistics warehouse 10 of this embodiment is provided with an inside carriageway 12, a pair of openings 16, a plurality of spaces 18, and a shutter 30 for each space 18 on each floor. The size, shape, and location in the XY plane of the inside carriageway 12 on each floor are common among the plurality of floors. Furthermore, as can be seen from FIG. 4, the size (volume) and location in the XY direction of each of the plurality of spaces 18 provided on each floor are common among the plurality of floors. In other words, spaces 18 assigned the same number on each of the plurality of floors are arranged at the same position in the XY direction and overlap in the vertical direction. Furthermore, the shutters 30 provided for each of the plurality of spaces 18 provided on each floor are arranged at the same position in the horizontal direction (more specifically, the X and Y directions) among the plurality of floors.

[0036] In addition, a rampway 20 is arranged outside the logistics warehouse 10, and in this embodiment, two rampways 20 are arranged on either side of the logistics warehouse 10 in the X direction. Each rampway 20 is connected to each of the inside driveways 12 of the multiple floors of the logistics warehouse 10 through an opening 16.

[0037] Specifically, one of the two rampways 20 is disposed in a position facing the first wall 14a of the logistics warehouse 10 in the X direction, and the other is disposed in a position facing the second wall 14b of the logistics warehouse 10 in the X direction. As shown in FIG. 1 , each rampway 20 has a main body 22 that forms a spirally extending ramp, and a connecting portion 24 that extends from the main body 22 toward the opening 16. The connecting portion 24 is provided for each floor, and each connecting portion 24 is connected to the opening 16 on the same floor out of the openings 16 provided for each floor in the first wall 14a. In other words, the connecting portions 24 of the rampways 20 are connected to the openings 16 disposed on each of the multiple floors in the logistics warehouse 10, on a floor-by-floor basis.

[0038] Furthermore, of the openings 16 provided on each floor, the openings 16 located on floors below the top floor (specifically, the first to third floors) are adjacent to a portion of the rampway 20 that is located at the same height as the opening 16, specifically, the main body 22 and a protective fence (balustrade) installed on its side edge. In other words, in front of (on the outside side of) the openings 16 located on floors below the top floor, there is a portion of the rampway 20 that blocks wind flowing into the logistics warehouse 10 through the openings 16. As a result, on floors below the top floor, the rampway 20 has a shielding effect against wind entering and leaving the logistics warehouse 10 through the openings 16.

[0039] In contrast, the opening 16 located on the top floor (specifically, the fourth floor) is exposed to the air, and there is no equipment that could obstruct the wind flowing into the logistics warehouse 10 through the opening 16. Therefore, the top floor of the logistics warehouse 10 is in a state where wind can easily flow in and out of the logistics warehouse 10 through the opening 16.

[0040] Incidentally, when wind from outside blows into the logistics warehouse 10 through the opening 16, the wind flows through the logistics warehouse 10 along the inside roadway 12. As a result, wind load, or more specifically, wind pressure, acts on the multiple shutters 30. However, because the shutters 30 inside the logistics warehouse 10 are special parts, there is little information (such as peak wind pressure coefficients) about the wind pressure acting on the shutters 30 inside the logistics warehouse 10, and there have not been enough examples of evaluations or research reports on wind pressure inside logistics warehouses until now.

[0041] For the reasons described above, until now, there have been no clear standards, laws, regulations, academic guidelines, etc. regarding wind-resistant design for the shutters 30 in the logistics warehouse 10, and as a result, the strength of the shutters 30 against wind pressure has not been set appropriately. Specifically, in a design that prioritizes safety, it may be considered to set a high level of strength against wind pressure for all of the multiple shutters 30 arranged in the logistics warehouse 10 (see FIG. 7). However, in such a case, some of the shutters 30 will be set to a strength greater than necessary, which will result in the use of more expensive shutters, increasing fixed costs, i.e., the construction costs of the logistics warehouse 10. On the other hand, in a design that prioritizes cost, it may be possible to set the strength of each of the multiple shutters 30 to the same level as the strength of a general interior door. However, in such a case, there is a possibility that wind pressure resistance will not be sufficiently ensured, and there is a risk that the shutters 30 will malfunction or be damaged if the wind pressure inside the logistics warehouse 10 becomes abnormally high, for example, during a strong wind.

[0042] In response to this, the inventors of the present invention conducted a wind tunnel experiment using a model of the logistics warehouse 10, and measured the distribution of wind pressure on each of the multiple floors of the logistics warehouse 10, specifically, the wind pressure acting on each of the multiple shutters 30 provided on each floor. The results of the wind tunnel experiment revealed that, of the multiple shutters 30, the wind pressure acting on the shutter 30 closest to the opening 16 is the greatest, and that the wind pressure acting on the shutter 30 decreases as the shutter 30 moves away from the opening 16. The results of the wind tunnel experiment also revealed that the wind pressure acting on the shutter 30 varies depending on the floor, even if the shutter 30 is located the same distance from the opening 16; specifically, the wind pressure acting on each shutter 30 differs between the top floor and floors below the top floor.

[0043] In this embodiment, based on the above findings, the strength (more specifically, strength against wind pressure, which also applies to the following explanation) of each of the multiple shutters 30 on each floor of the logistics warehouse 10 is set. Specifically, as shown in Fig. 5, among the multiple spaces 18 lined up along the inside roadway 12, the strength of the shutters 30 against wind pressure is higher in a first space than in a second space that is farther from the opening 16 than the first space. The strength of the shutter 30 is set to a strength that can withstand wind pressure, and is therefore determined according to the results of wind pressure measurement. Furthermore, since the results of wind pressure measurement can change depending on the measurement time (evaluation time), the set value of the strength of the shutter 30 can change if the set value of the wind pressure measurement time changes.

[0044] Here, the first space and the second space are relative concepts that indicate the positional relationship between two spaces 18. To be more specific, of the multiple spaces 18 on each floor (strictly speaking, when the 14 spaces 18 are divided into two equal parts in the X direction, the seven spaces 18 included in one half), one or more spaces 18 that are closer to the opening 16 correspond to the first space. On the other hand, one or more spaces 18 that are closer to the center position of the logistics warehouse 10 in the X direction, in other words, that are farther from the opening 16, correspond to the second space.

[0045] The strength of each of the multiple shutters 30 on each floor will be described in detail with reference to Figure 5. In Figure 5, the strength of the shutters 30 is shown as four ranks A, B, C, and D, with rank A being the highest strength and ranks B, C, and D decreasing in strength. Incidentally, rank D corresponds to the lowest strength rank among wind-resistant shutters. 5 and Figures 7, 9 and 11, which will be referred to later, the strength of each shutter 30 in the multiple spaces on each floor of the logistics warehouse (i.e., the strength rank assigned to each shutter 30 arranged in the logistics warehouse) is merely an example and is set assuming a certain wind speed. In other words, the strength and rank of the shutters 30 provided in each of the multiple spaces in the logistics warehouse can change depending on the design conditions, such as the wind speed, assumed at the time of design.

[0046] On each floor of the logistics warehouse 10, as shown in FIG. 5, of the multiple spaces 18 (strictly speaking, when the multiple spaces 18 are divided into two equal parts in the X direction, the group of spaces 18 included in one of the two equal parts), the strength of the shutters 30 installed in the spaces 18 closest to the opening 16 is the highest and is set to rank B. As mentioned above, this reflects the fact that, of the multiple shutters 30, the wind pressure acting on the shutters 30 closest to the opening 16 is the greatest. On the other hand, the strength of the shutters 30 installed in the spaces 18 away from the opening 16, more specifically, the spaces 18 located closer to the center of the logistics warehouse 10 in the X direction, is set to a lower value and is set to rank C or D.

[0047] As shown in FIG. 5, the strength of the shutters 30 for the second spaces provided on the top floor (fourth floor) is higher than the strength of the shutters 30 for the second spaces provided on the floors below the top floor (first to third floors). Specifically, the strength of the shutters 30 for the spaces 18 that are second to fourth closest to the opening 16 (i.e., the spaces 18 numbered #2 to #4) is set to rank B on the top floor, but is set to rank D on the floors below the top floor. Furthermore, the strength of the shutters 30 for the spaces 18 that are fifth to seventh closest to the opening 16 (i.e., the spaces 18 numbered #5 to #7) is set to rank C on the top floor, but is set to rank D on the floors below the top floor. This reflects the fact that, as mentioned above, wind easily enters the logistics warehouse 10 through the opening 16 on the top floor, whereas wind heading toward the opening 16 is blocked by the shielding effect of the rampway 20 on the floors below the top floor.

[0048] Furthermore, as shown in Fig. 5, of the multiple spaces 18 provided on the top floor, the strength of the shutters 30 of the spaces 18 that are within a distance L (unit: m) from the opening 16 located on the top floor is equal to or greater than the first strength (specifically, rank B). In contrast, the strength of the shutters 30 of the spaces 18 that are within a distance from the opening 16 that exceeds the above-mentioned L is less than the first strength (specifically, rank C). Here, when the width of the opening 16 located on the top floor is b (unit: m), in this embodiment, the following relational expression (1) holds. 1 <L / b≦3.5 (1) Here, the first intensity is the intensity of the shutter 30 that is set to the highest intensity among the shutters 30 placed within the logistics warehouse 10, and specifically corresponds to the intensity set for the shutter 30 in the space 18 on the top floor that is closest to the opening 16.

[0049] Regarding the above formula (1), the inventors of the present invention conducted wind tunnel experiments using a model of a logistics warehouse multiple times, varying the size of the model, and measured the wind pressure distribution (strictly speaking, the distribution of peak wind pressure coefficients) on the top floor of the warehouse model in each experiment. Here, the size of the model refers to the length equivalent to the depth of the model, and more specifically, the length of the logistics warehouse in the X direction (in other words, the distance of the inner roadway 12) reduced to match the scale of the model. An example of the measurement results of wind pressure distribution in a wind tunnel experiment is shown in Figure 6. Figure 6(a) shows the measurement results when the model size is 400 mm, and Figure 6(b) shows the measurement results when the model size is 600 mm. The horizontal axis of each graph in Figure 6 indicates the distance (in mm) from the hole in the model that corresponds to opening 16, and the vertical axis indicates the maximum value of the peak wind pressure coefficient. Each graph also shows the measurement results at five measurement points set up within the model (ceiling, upper east side wall, lower east side wall, upper west side wall, and lower west side wall).

[0050] The wind pressure distribution measured in each experiment revealed that wind pressure was greatest at the position of opening 16, and that near opening 16, wind pressure rapidly decreased as the distance from opening 16 increased. However, once the distance from opening 16 reached a predetermined distance, wind pressure remained approximately constant even when the distance from opening 16 increased further. Furthermore, the distance from opening 16 at which wind pressure began to become approximately constant was the same in each experiment, revealing that the size of the model had almost no effect. From this, it can be assumed that the length of the range within which the strength of shutter 30 should be set to the first strength or higher, i.e., the aforementioned distance L, is approximately constant regardless of the size of the logistics warehouse. Furthermore, as mentioned above, the width b of the opening is a standard length used for vehicle access openings, and therefore is a standard length among logistics warehouses.

[0051] Furthermore, each wind tunnel experiment was conducted with the wind speed adjusted to 38 m / s, the maximum wind speed that can be expected in an actual logistics warehouse. Under these conditions, the distance between opening 16 and the point in the wind pressure distribution where the wind pressure begins to become approximately constant, in other words, the distance L described above, is thought to be at its largest, and L / b at that time is approximately 3.5. Because the wind speed in a logistics warehouse is usually 38 m / s or less, L / b is estimated to be 3.5 or less. From the above, it is considered that the plurality of shutters 30 installed on the top floor will satisfy the above formula (1) regardless of the size and location of the logistics warehouse.

[0052] As described above, in the logistics warehouse 10 of this embodiment, the strength of each of the multiple shutters 30 arranged along the inside carriageway 12 on each floor is appropriately set. Specifically, because there are few evaluation cases and research reports on wind pressure distribution within a logistics warehouse with an inside carriageway 12, as mentioned above, in conventional designs, the strength of each of the multiple shutters arranged within the logistics warehouse may have been set to a high level in order to prioritize safety. More specifically, as shown in FIG. 7 , for example, it has been considered to set the strength of all of the multiple shutters on the top floor (fourth floor) to Rank A, and the strength of all of the multiple shutters on floors below the top floor (first to third floors) to Rank B. However, in this case, more high-performance (high-strength) shutters than necessary would be used, resulting in unnecessarily high construction costs for the logistics warehouse.

[0053] In contrast, in this embodiment, the strength of each of the multiple shutters 30 installed on each floor is set taking into consideration the wind pressure distribution inside each floor of the logistics warehouse 10. This ensures that each shutter 30 is strong enough to withstand wind pressure, while avoiding the need for higher performance products due to the need for greater strength than necessary. In other words, in this embodiment, as shown in Fig. 5, the strength of each of the multiple shutters 30 on each floor is set to an appropriate level (rank) and the specifications of each shutter 30 are appropriately determined, thereby reducing the construction costs of the logistics warehouse compared to the configuration shown in Fig. 7.

[0054] << Cases where the location of ramps is taken into consideration >> The wind pressure distribution inside the logistics warehouse can change depending on the position of the ramp way 20, which is the outer driveway, more specifically, the positional relationship between the logistics warehouse and the ramp way 20. On the other hand, as a modified example of a logistics warehouse, as shown in Figure 8, a logistics warehouse in which a portion of the exterior wall 14 has a setback shape and a ramp way 20 is arranged utilizing this shape (hereinafter referred to as modified logistics warehouse 10X) can be considered.

[0055] To explain in more detail, the basic configuration of the logistics warehouse 10X of the modified example, specifically the number of floors and the internal configuration of the warehouse on each floor (specifically, the inside carriageway 12, the plurality of spaces 18, and the plurality of shutters 30), is the same as that of the logistics warehouse 10 of the above-described embodiment (this embodiment). In addition, the outer wall 14 of the logistics warehouse 10X of the modified example has a first wall 14a and a second wall 14b located on opposite sides to each other in the X direction.

[0056] In this modified example, the first wall 14a has a first portion 14c and a second portion 14d that is offset from the first portion 14c in the X direction. In the first wall 14a, the second portion 14d is adjacent to the first portion 14c in the Y direction and is located closer to the second wall 14b than the first portion 14c. Strictly speaking, as shown in FIG. 8, the second portion 14d is offset toward the second wall 14b. A recessed space 26 is provided between the first portion 14c and the second portion 14d, and the ramp way 20 is disposed within this recessed space 26. The opening 16 provided in the first wall 14a is disposed at the innermost portion of the recessed space 26 (the portion closest to the second wall 14b).

[0057] 8, a portion of the second wall 14b is offset toward the first wall 14a, thereby providing a recessed space 26. Also on the second wall 14b side, the ramp way 20 is disposed within the recessed space 26, and the opening 16 provided in the second wall 14b is disposed at the innermost portion of the recessed space 26 (the portion closest to the first wall 14a).

[0058] The inventors of the present invention estimated the wind pressure distribution inside each floor of the modified logistics warehouse 10X from the results of the wind tunnel experiment described above. According to the estimation results, the strength of each of the multiple shutters 30 on each floor of the modified logistics warehouse 10X is set to, for example, the rank strength shown in FIG.

[0059] As can be seen from FIG. 9, in the logistics warehouse 10X of the modified example, similarly to the logistics warehouse 10 of the embodiment (present embodiment) described above, of the multiple spaces 18 lined up along the inside carriageway 12, the first space has a higher strength than the second space that is farther from the opening 16 than the first space. Specifically, on the top floor, of the multiple spaces 18 (strictly speaking, when the multiple spaces 18 are divided into two equal parts in the X direction, the group of spaces 18 included in one of the two equal parts), the shutters 30 provided in the spaces 18 closest to the opening 16 have the highest strength and are set to rank B. On the other hand, the strengths of the shutters 30 provided in the spaces 18 farther from the opening 16 are set to lower strengths and are set to rank C or D. Such a strength distribution of the shutters 30 is also observed on floors below the top floor (specifically, the third floor). Also, as shown in Figure 9, the strength of the shutters 30 in some of the second spaces located on the top floor (specifically, spaces 18 numbered #2 to #6) is higher than the strength of the shutters 30 in the second spaces located on floors below the top floor.

[0060] 5 and 9, in the modified logistics warehouse 10X, the number of shutters 30 set to the first intensity among the multiple shutters 30 arranged on the top floor is smaller than that of the logistics warehouse 10 of the above-described embodiment. To explain in more detail, in the modified logistics warehouse 10X, the aforementioned L / b satisfies the following relational expression (2). 1 <L / b≦2.5 (2) This is because in the modified logistics warehouse 10X, the rampway 20 extends into the recessed space 26 and the opening 16 is located at the innermost part of the recessed space 26, making it even more difficult for wind from outside to pass through the opening 16 compared to the above-mentioned embodiment.

[0061] Regarding the above equation (2), as mentioned above, the inventors of the present invention conducted multiple wind tunnel experiments using models of different sizes and found that the length of the range (i.e., distance L) where the strength of the shutter 30 is equal to or greater than the first strength on the top floor of a logistics warehouse is substantially constant regardless of the size of the logistics warehouse. The inventors also conducted a separate wind tunnel experiment using a model of the modified logistics warehouse 10X to measure the wind pressure distribution within the warehouse. This wind tunnel experiment was also conducted by adjusting the wind speed to 38 m / s, the maximum wind speed that can be expected in an actual logistics warehouse. From the results of this experiment, the length of the range where the strength of the shutter 30 is equal to or greater than the first strength, i.e., the above distance L, was determined, and L / b was calculated, resulting in L / b being approximately 2.5. Taking the above into consideration, it is believed that the multiple shutters 30 installed on the top floor of the modified logistics warehouse 10X will satisfy the above formula (2) regardless of the size and location of the logistics warehouse.

[0062] <<Other embodiments>> Although one embodiment of the structure of the present invention has been described above, the above-described embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention. Furthermore, it goes without saying that the present invention includes equivalents thereof.

[0063] Furthermore, in the above-described embodiment, the logistics warehouse 10 is a multi-story warehouse, but this is not limited thereto, and the present invention can also be applied to, for example, a single-story logistics warehouse 10Y shown in Fig. 10. The single-story logistics warehouse 10Y shown in Fig. 10 differs from the logistics warehouse 10 of the above-described embodiment in that it is, for example, a single-story building with only one floor and does not have a ramp way 20, but in other respects the two are common to each other. The inventors of the present invention estimated the wind pressure distribution inside the one-story logistics warehouse 10Y shown in Fig. 10 from the measurement results of the wind tunnel experiment described above. According to the estimation results, the strength of each of the multiple shutters 30 in the one-story logistics warehouse 10Y is set to, for example, the rank strength shown in Fig. 11.

[0064] 11, in the modified logistics warehouse 10X, as in the logistics warehouse 10 of the above-described embodiment, of the multiple spaces 18 lined up along the inside roadway 12, the first space has a higher strength than the second space that is farther from the opening 16 than the first space. Specifically, the strength of the shutter 30 provided in the space 18 closest to the opening 16 (i.e., the space 18 numbered #1) is the highest and is set to rank B, while the strength of the shutters 30 located further inside is set to a lower value, specifically set to rank D.

[0065] In the above-described embodiment, the outer wall 14 of the logistics warehouse 10 has a first wall 14a and a second wall 14b as portions located at both ends in the X direction, and the first wall 14a and the second wall 14b each have an opening 16 that serves as an entrance and exit to the logistics warehouse 10. However, this is not limited to this, and the opening 16 may be provided in only one of the first wall 14a and the second wall 14b.

[0066] Furthermore, in the above-described embodiment, the logistics warehouse 10 has been described as an example of a structure, but the structure of the present invention is not limited to a logistics warehouse. In other words, the present invention can also be applied to structures other than logistics warehouses, such as commercial facilities such as department stores, public facilities such as hospitals and schools, accommodation facilities such as hotels, residential facilities such as apartments, and industrial facilities such as factories, as long as they have an internal roadway, multiple spaces, and openable / closable doors such as shutters that separate the roadway from each space. [Explanation of symbols]

[0067] 10 Logistics warehouse 10X Modified Logistics Warehouse 10Y One-story logistics warehouse 12 Inside lane 14 Exterior Wall 14a First Wall 14b Second Wall 16 aperture 18 Space 20 Rampway (outer lane) 22 Main body 24 Connection 26 Recessed space 30 Shutter (door)

Claims

1. A structure having a roadway and a plurality of spaces arranged along the roadway inside, An opening that is continuous with the roadway and serves as an entrance and exit for the structure is provided on the outer wall of the structure, Each of the plurality of spaces is provided with an openable / closable door facing the roadway and separating the roadway from the space; A structure in which the strength of the door against wind pressure is higher in a first space among the plurality of spaces than in a second space that is farther from the opening than the first space.

2. The roadway within the structure extends linearly, The structure according to claim 1 , wherein the door of the space closest to the opening among the plurality of spaces has the highest strength against wind pressure.

3. the structure has a plurality of floors; The roadway, the spaces, and the opening are provided on each of the plurality of floors, The doors provided in each of the plurality of spaces provided on each floor are arranged at the same position in the horizontal direction among the plurality of floors, 3. The structure according to claim 2, wherein the strength of the door of the second space provided on the top floor is greater than the strength of the door of the second space provided on a floor below the top floor.

4. an outer driveway continuous with the driveway of each of the plurality of floors through the opening is located outside the structure; The structure according to claim 3, wherein the openings arranged on each of the plurality of floors are connected to connection portions of the outer carriageway that extend from a spirally extending main body portion toward the openings, on a floor-by-floor basis.

5. Among the plurality of spaces provided on the top floor, the strength of the door of a space within a range of a distance L (unit: m) from the opening arranged on the top floor is equal to or greater than a first strength, and the strength of the door of a space within a range where the distance exceeds L is less than the first strength, The structure according to claim 4, wherein L / b is greater than 1 and is equal to or less than 3.5, where b (unit: m) is the width of the opening located on the top floor.

6. the outer wall of the structure includes a first wall and a second wall arranged opposite to each other in an extension direction of the roadway, the first wall has a first portion and a second portion adjacent to the first portion and located closer to the second wall than the first portion; the outer roadway extends into a recessed space provided between the first portion and the second portion; the opening provided in the first wall is located at the innermost part of the recessed space, 6. The structure of claim 5, wherein L / b is greater than 1 and less than or equal to 2.

5.

7. the outer wall of the structure includes a first wall and a second wall arranged opposite to each other in an extension direction of the roadway, The structure of claim 2 , wherein the first wall and the second wall each have the opening.

8. The structure according to claim 1 , wherein the structure is a logistics warehouse.

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