JP6093537B2 - building - Google Patents

Description

  The present invention relates to a building having a sleeve wall.

  2. Description of the Related Art Conventionally, a building is known in which a sleeve wall that protrudes outward is provided on the outer wall for the purpose of fire prevention (preventing fires). Providing the sleeve wall suppresses the flame from spreading beyond the sleeve wall. As such a building provided with sleeve walls, there is one described in Patent Document 1, for example.

JP 2008-291501 A

  However, in a building provided with sleeve walls, it is necessary to increase the protruding dimensions of the sleeve walls in order to enhance the fire prevention effect. In this case, lighting and ventilation tend to be sacrificed, and a large site is required.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems of the prior art, and aims to provide a building that saves space and has high fire prevention performance.

In order to solve the above problems, a building according to the present invention includes a side wall close to the site boundary, a front wall bent from one end of the side wall to the opposite side of the site boundary, and one end of the side wall in plan view. A sleeve wall projecting along the extending direction of the side wall, and an independent pillar erected with a predetermined distance from the front wall and the sleeve wall , one end of the independent pillar on the site boundary line When a plurality of straight lines of a predetermined length passing through the inner corner of the end of the sleeve wall and the other end reaching the front wall are drawn by changing the position of one end on the site boundary line, It is provided at a position that blocks reaching the straight front wall .

  According to the present invention, by combining the sleeve wall and the independent pillar, the fire prevention effect on the front wall is radiated in a straight line from the adjacent land in contact with the site boundary line without increasing the projecting dimension of the sleeve wall. The effect of blocking radiant heat can be enhanced. Therefore, it is possible to obtain a building that has a small space and high fire prevention performance.

  Moreover, since the independent pillar is spaced apart from the front wall, there is no restriction on the arrangement and size of the openings provided in the front wall.

  It is preferable to further include a ridge protruding from the front wall so as to be continuous with the sleeve wall and the independent pillar. In this case, flames and radiant heat from the upper side to the lower side can be blocked by the soot, and the fireproof performance can be further improved.

  The protruding dimension of the heel is preferably smaller than the protruding dimension of the sleeve wall. In this case, it is possible to maintain fire prevention performance while securing lighting to the opening provided in the front wall.

  The independent pillar preferably has a long rectangular cross section in the protruding direction of the sleeve wall. In this case, the interval between the side wall and the independent pillar can be increased. In addition, when a plurality of independent pillars are provided, a fire prevention effect can be obtained with a small number. Therefore, when the outside is viewed from the opening provided in the front wall, the fire prevention performance can be enhanced while suppressing the visibility from being limited by the independent pillar.

  ADVANTAGE OF THE INVENTION According to this invention, the building which has high fire-proof performance can be provided in space saving.

It is a perspective view which shows the building which concerns on embodiment. It is sectional drawing of the horizontal direction around the corner part of the 2nd floor of the building shown in FIG. It is a figure which shows a 1st modification. It is a figure which shows the 2nd modification. It is a figure which shows the 3rd modification. It is a figure which shows the 4th modification. It is a figure which shows the 5th modification. It is a figure which shows the 6th modification.

  Hereinafter, embodiments of a building according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the building 1 is a three-story building built on the site X. The outer peripheral wall of each floor of the building 1 is formed in a substantially rectangular shape in plan view. An interior space of each floor is formed inside the outer peripheral wall. The outer surface of the outer peripheral wall of each floor of the building 1 is configured by a member having fireproof performance such as ALC (lightweight cellular concrete).

  Site X is adjacent to road R. When the building 1 is viewed from the road R side, the adjacent site Y1 is adjacent to the left side of the site X, and the adjacent site Y2 is adjacent to the right side of the site X. Buildings (not shown) are also built in the adjacent Y1 and the adjacent Y2. In the building 1, the side facing the road R is the front of the building 1. In the building 1, the configurations of the floors are the same as each other, and therefore, the configuration of the second floor will be described as a representative.

  As shown in FIG.1 and FIG.2, the outer peripheral wall 20 of the 2nd floor of the building 1 is comprised including the side wall 21 and the side wall 23, the front wall 22, and the back wall which is not shown in figure. The side wall 21 and the side wall 23 are disposed so as to face each other. The side wall 21 is disposed at a position close to the site boundary line between the adjacent site Y1 and site X. The side wall 23 is arranged at a position close to the site boundary line between the adjacent site Y2 and site X.

  The end portions on both sides of the front wall 22 are connected to the end portions of the side wall 21 and the side wall 23 on the road R side, respectively. That is, the front wall 22 bends from the end (one end) of the side wall 21 on the road R side to the opposite side with respect to the site boundary between the site X and the adjacent site Y1. The front wall 22 bends from the end (one end) of the side wall 23 on the road R side to the opposite side of the site boundary line between the site X and the adjacent site Y2.

  The back wall is disposed in parallel with the front wall 22. The end portions on both sides of the back wall are connected to the opposite end portions of the side wall 21 and the side wall 23 with respect to the road R, respectively.

  A sleeve wall 21 a that protrudes toward the road R side is provided at an end (one end) of the side wall 21 on the road R side. That is, the sleeve wall 21a protrudes along the extending direction of the side wall 21 in a plan view, and the side wall 21 and the sleeve wall 21a are provided in a straight line with each other.

  Similarly, a sleeve wall 23a that protrudes toward the road R side is provided at an end (one end) of the side wall 23 on the road R side. That is, the sleeve wall 23a protrudes along the extending direction of the side wall 23 in plan view, and the side wall 23 and the sleeve wall 23a are provided in a straight line with each other.

  In the vicinity of the sleeve wall 21 a, an independent column 26 is provided that is erected with a predetermined distance from the sleeve wall 21 a and the front wall 22. The independent pillar 26 has a long rectangular cross section in the projecting direction of the sleeve wall 21a (see FIG. 2). The independent pillar 26 is erected on the floor of the veranda 24 provided on the road R side of the front wall 22. The upper end of the independent pillar 26 is connected to the lower surface of the flange 25 that covers the upper portion of the veranda 24. The end face on the road R side of the sleeve wall 21a and the end face on the road R side of the independent pillar 26 are respectively the same distance from the front wall 22.

  In the vicinity of the sleeve wall 23 a, an independent column 27 is provided that is erected with a predetermined distance from the sleeve wall 23 a and the front wall 22. The independent pillar 27 has a rectangular cross section that is long in the projecting direction of the sleeve wall 23a, like the independent pillar 26. The independent pillar 27 is erected on the floor of the veranda 24. The upper end of the independent column 27 is connected to the lower surface of the flange 25. The end surface on the road R side of the sleeve wall 23a and the end surface on the road R side of the independent column 27 are the same distance from the front wall 22, respectively.

  The collar 25 is projected from the front wall 22 toward the road R side between the sleeve wall 21a and the sleeve wall 23a. An eaves ceiling is formed on the back of the eaves of the eaves 25 by a plate material having fire prevention performance. The collar 25 protrudes from the front wall 22 to the position of the end of the sleeve wall 21a and the sleeve wall 23a on the road R side. The second floor fence 25 constitutes the floor of the third floor veranda 34. In addition, the floor of the veranda 24 on the second floor is constituted by the basket 15 on the first floor.

  Similarly to the first floor of the building 1, both sides of the front wall 12 are the same as the sleeve walls 21 a, the sleeve walls 23 a, the independent pillars 26, the independent pillars 27, and the collars 25 that protrude from both sides of the front wall 22 on the second floor. A sleeve wall 11a, a sleeve wall 13a, an independent column 16, an independent column 17, and a collar 15 are provided. Further, on the third floor of the building 1, similarly to the configurations on the second floor, there are sleeve walls 31 a, sleeve walls 33 a, independent pillars 36, independent pillars 37, and collars 35 protruding on both sides of the front wall 32. Provided.

  Next, taking the second floor of the building 1 as an example, the positional relationship between the front wall 22 and the adjacent Y1, adjacent Y2, and road R will be described. Here, in the case where openings such as windows and doors are provided in the front wall 22, in order to avoid flames from the adjacent land Y1, the adjacent land Y2, and the road R, the front wall 22, the adjacent land Y1, the adjacent land Y2, and the road R It is desirable that the linear distance is more than a predetermined distance. This is also stipulated in laws and regulations such as the Building Standard Law.

  In the present embodiment, as an example, the front wall 22 does not exist at a position where the linear distance from the adjacent ground Y1 and the adjacent ground Y2 is within 5 m, and the linear distance from the road center line R1 of the road R is within 5 m. A configuration in which each part is arranged so that the front wall 22 does not exist will be described.

  As shown in FIG. 2, the front wall 22 is provided at a position where the distance from the road center line R1 is 5 m or more. In addition, in FIG. 2, arrangement | positioning of the sleeve wall 21a of the adjacent land Y1 side, the independent pillar 26 grade | etc., Is shown. The arrangement configuration of the sleeve wall 23a, the independent pillar 27, etc. on the adjacent ground Y2 side is the same as the arrangement configuration of the sleeve wall 21a, the independent pillar 26, etc. on the adjacent ground Y1, and detailed description thereof is omitted.

  Independent pillars at positions that can block the straight line L that directly reaches the front wall 22 when a plurality of 5 m straight lines L are drawn from each position on the boundary line between the adjacent land Y1 and the site X toward the front wall 22 26 is provided.

  In the front wall 22, the region W <b> 2 is a portion where the straight line L drawn from each position on the boundary line between the adjacent land Y <b> 1 and the site X does not reach directly due to the provision of the independent pillar 26. A region W1 closer to the sleeve wall 21a than the region W2 is a portion where the straight line L drawn from each position on the adjacent land boundary line does not reach directly by providing the sleeve wall 21a. The region W3 which is a portion closer to the sleeve wall 23a than the region W2 and which is a portion of 5 m or less from the boundary between the adjacent land Y1 and the site X is provided with the sleeve wall 21a. This is a portion where the straight line L drawn from each position on the boundary line of the adjacent land no longer reaches directly.

  That is, by providing the independent pillar 26 in addition to the sleeve wall 21a, when a straight line L of 5 m is drawn from each position on the boundary line between the adjacent land Y1 and the site X toward the front wall 22, the straight line L becomes the front surface. A state in which the road 22 side of the wall 22 is not directly reached can be achieved.

  For example, when only the sleeve wall 21 a is provided and the independent pillar 26 is not provided, if the front wall 22 is not retracted to the retracted position Z, the straight line L of 5 m drawn toward the front wall 22 is directly on the front wall 22. It reaches a state to reach. Therefore, by providing the independent pillar 26, the front wall 22 can be provided at the position on the road R side, and the indoor space of the building 1 can be expanded.

  Similarly, on the adjacent land Y2 side, the projecting dimensions of the sleeve wall 23a so that the 5 m straight line drawn from each position on the boundary line between the site X and the adjacent land Y2 toward the front wall 22 does not reach the front wall 22, And the installation position of the independent pillar 27 is set.

  The present embodiment is configured as described above. By combining the sleeve walls 11a, 13a, 21a, 23a, 31a and 33a and the independent pillars 16, 17, 26, 27, 36 and 37, respectively, the sleeve walls 11a, Without increasing the protruding dimensions of 13a, 21a, 23a, 31a and 33a, the fire prevention effect on the front walls 12, 22 and 32, in particular, the effect of blocking the radiant heat radiated linearly from the site boundary line with the adjacent land Can be increased. Accordingly, it is possible to obtain the building 1 having a high space and a small fire prevention performance.

  Thereby, when providing openings, such as windows, in the front walls 12, 22, and 32, there is no need to select windows having fireproof performance, and the degree of freedom in building design is improved. Moreover, even if it provides an opening part in the front walls 12, 22, and 32, since an opening part becomes difficult to receive the influence of a flame, it becomes the building 1 which has high fire prevention performance.

  Moreover, since the independent pillars 16, 17, 26, 27, 36, and 37 are separated from the front walls 12, 22, and 32, the arrangement and size of openings such as windows provided in the front walls 12, 22, and 32 are separated. It is hard to generate restrictions.

  In addition, for example, the second floor further includes a collar 25 protruding from the front wall 22 so as to be continuous with the sleeve wall 21a, the sleeve wall 23a, the independent pillar 26, and the independent pillar 27. In this case, flames and radiant heat directed from the top toward the front wall 22 can be blocked by the eaves 25, and the fireproof performance can be further improved. As with the second floor, the first floor and the third floor can be shielded by flames 15 and 35 respectively from the flames and radiant heat toward the front wall 12 and the front wall 32 by providing the walls 15 and 35. Fireproof performance can be increased.

  For example, on the second floor, the projecting dimension of the collar 25 is made smaller than the projecting dimensions of the sleeve wall 21a and the sleeve wall 23a. In this case, it is possible to maintain fire prevention performance while securing lighting to the opening provided in the front wall 22. Similarly to the second floor, the first floor and the third floor have openings provided in the front wall 12 and the front wall 32 by making the protrusion dimensions of the flanges 15 and 35 smaller than the protrusion dimensions of the sleeve walls 11a and the like. Fire safety performance can be enhanced while ensuring daylighting.

  The independent pillars 16, 17, 26, 27, 36 and 37 have a rectangular cross section which is long in the protruding direction of the sleeve wall 11a and the like. In this case, between the sleeve wall 11a and the independent pillar 16, between the sleeve wall 13a and the independent pillar 17, between the sleeve wall 21a and the independent pillar 26, between the sleeve wall 23a and the independent pillar 27, and between the sleeves. The space between the wall 31a and the independent column 36 and the space between the sleeve wall 33a and the independent column 37 can be widened. Moreover, since the area which shields the flame etc. which head to the front walls 12, 22, and 32 from the adjacent boundary line with an adjacent land becomes large, a fire prevention effect can be acquired with a small number of independent pillars. Therefore, when the outside is viewed from the openings provided in the front walls 12, 22, and 32, the fire prevention performance can be enhanced while suppressing the visibility from being limited by the independent pillar 16 or the like.

  Next, a modified example of the independent pillar will be described. First, a first modification will be described with reference to FIG. In the example shown in FIG. 3, the building 1 is closer to the road R side than the building 1 shown in FIG. In this case, as shown in FIG. 3, in the second floor of the building 1, a region W <b> 1, which is a portion of the front wall 22 where the straight line L drawn from each position on the adjacent boundary line does not reach directly, is shown in FIG. 2. It becomes wider than the case shown. For this reason, the independent pillar 26 can be arrange | positioned spaced apart with respect to the sleeve wall 21a compared with the case where it shows in FIG.

  Next, a second modification will be described with reference to FIG. In the example shown in FIG. 4, the building 1 is brought closer to the road R side as in the case shown in FIG. 3. In this state, the independent pillar 26A is disposed closer to the sleeve wall 21a than in the case shown in FIG. 3, and the length of the sleeve 21a in the protruding direction of the independent pillar 26A is shortened. Even in this case, the straight line L drawn from each position on the adjacent land boundary line does not reach the front wall 22 directly. Thus, by arranging the independent pillar 26A close to the sleeve wall 21a, the length of the independent wall 26A in the protruding direction of the sleeve wall 21a can be shortened.

  Next, a third modification will be described with reference to FIG. In the example shown in FIG. 5, the shape and the number of independent pillars are changed while the distance between the building 1 and the road R is the same as that shown in FIG. As shown in FIG. 5, independent pillars 26 </ b> B and 26 </ b> C are provided in which the length in the protruding direction of the sleeve wall 21 a is shorter than the independent pillar 26 shown in FIG. 2. By providing the independent pillar 26B and the independent pillar 26C, it is possible to obtain a region W2 that is a portion where the straight line L drawn from each position on the adjacent boundary line does not reach the front wall 22 directly. Even when the independent column 26B and the independent column 26C having a short length in the protruding direction of the sleeve wall 21a are used by providing a plurality of independent columns like the independent column 26B and the independent column 26C, the sleeve wall 21a. The same fire prevention effect as that when the independent pillar 26 having a long length in the protruding direction is used can be obtained.

  Next, a modified example of the shape of the building will be described. First, a fourth modification will be described with reference to FIG. The building 1A shown in FIG. 6 is provided with independent pillars 26D and 27D extending from the first floor to the third floor ridges 35A and 35B without providing the second and third floor verandas. Is. The collar 35A provided on the third floor is connected to the sleeve wall 31a and the independent pillar 26D, and the collar 35B is connected to the sleeve wall 33a and the independent pillar 27D. Even in this case, the same fire prevention effect as that shown in FIGS. 1 and 2 can be obtained in the front walls 12, 22 and 32 of the building 1A.

  Next, a fifth modification will be described with reference to FIG. The building 1B shown in FIG. 7 is provided with independent pillars 26E and 27E extending from the first floor to the third floor walls 35C to 35E without providing the second and third floor verandas. is there. The collar 35C provided on the third floor projects from the front wall 32 and is connected to the sleeve wall 31a and the independent pillar 26E. The flange 35D projects from the front wall 32 and is connected to the independent column 26E and the independent column 27E. The collar 35E protrudes from the front wall 32 and is connected to the sleeve wall 33a and the independent pillar 27E.

  The independent pillar 26E is farther from the sleeve wall 21a and the like than the independent pillar 26D of the building 1A shown in FIG. For this reason, the length of the independent pillar 26E in the protruding direction of the sleeve wall 21a and the like is longer than the length of the independent pillar 26D of the building 1A shown in FIG. Similarly to the independent column 26E, the length of the independent column 27E in the protruding direction of the sleeve wall 23a and the like is longer than the length of the independent column 27D of the building 1A shown in FIG. Even in this case, the same fire prevention effect as that shown in FIGS. 1 and 2 can be obtained in the front walls 12, 22 and 32.

  Next, a sixth modification will be described with reference to FIG. The building 1C shown in FIG. 8 is provided with independent pillars 26E and 27E on the second and third floors without providing independent pillars on the first floor. On the first floor where no independent pillar is provided, the front wall 12 is provided with an opening 12a such as an entrance at a position away from the adjacent Y1 and the adjacent Y2. By providing the opening 12a at a position separated from the adjacent ground Y1 and the adjacent ground Y2 by a predetermined distance, a fire prevention effect can be obtained in the opening 12a without providing an independent pillar. Thus, you may combine the floor which provides an independent pillar, and the floor which does not provide an independent pillar.

  Although one embodiment of the present invention and various modifications have been described above, the present invention is not limited to the above-described embodiment and various modifications. For example, the level of the building, the number of independent pillars, the separation distance between the building and the adjacent land, and the road can be appropriately changed.

  Moreover, in the said embodiment and various modifications, although the position of the front wall 22 etc. shall be 5 m away from the road centerline R1 as an example, these are examples and are the distance to be separated according to various conditions Can be set. Further, for example, the distance to be separated may be changed for each level of the building.

  Moreover, the structure of the buildings 1 and 1A to 1C can be applied with an appropriate structure such as a steel structure or a wooden structure. An appropriate floor plan can be applied to the internal structure of each floor of the buildings 1 and 1A to 1C.

  Moreover, if it is a window etc. which has fire prevention performance, you may provide a window etc. in the side wall by the side of the adjacent land Y1 of the building 1, 1A-1C, the side wall by the side of adjacent land Y2, etc.

  DESCRIPTION OF SYMBOLS 1 ... Building, 11a, 13a, 21a, 23a, 31a, 33a ... Sleeve wall, 12, 22, 32 ... Front wall, 15, 25, 35 ... Gutter, 16, 17, 26, 27, 36, 37 ... Independent pillar 21, 23 ... sidewalls.

Claims (4)

A side wall close to the site boundary,
A front wall that bends from one end of the side wall to the opposite side of the site boundary line;
At one end of the side wall, a sleeve wall protruding along the extending direction of the side wall in plan view;
An independent pillar erected with a predetermined spacing from the front wall and the sleeve wall;
Equipped with a,
The independent pillar has a straight line of a predetermined length on the site boundary line, one end on the site boundary line, a middle point passing through a corner inside the front end of the sleeve wall, and the other end side reaching the front wall. A building that is provided at a position that blocks all the straight lines from reaching the front wall when a plurality of pulls are made by changing the position of the one end .   The building according to claim 1, further comprising a ridge protruding from the front wall so as to be continuous with the sleeve wall and the independent pillar.   The building according to claim 2, wherein a protruding dimension of the collar is smaller than a protruding dimension of the sleeve wall.   The said independent pillar is a building as described in any one of Claims 1-3 which has a long rectangular cross section in the protruding direction of the said sleeve wall.

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