JP6105249B2 - Building design method and building - Google Patents

Description

  The present invention relates to a method for designing a building having sleeve walls and a building having sleeve walls.

  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 a sleeve wall, there is one described in Patent Document 1, for example.

JP 2008-291501 A

  According to the conventional building, there are effects such as suppression of similar burning against the flame from the building adjacent to the sleeve wall. However, sufficient investigation has not been made on the position of the opening provided on the outer wall and the protruding dimension of the sleeve wall. For this reason, there is no guideline for design, and it has been difficult to easily design a building having high fire safety.

  An object of the present invention is to provide a building design method capable of easily designing a building having high fire safety and a building designed by the design method.

  The building design method of the present invention includes a side wall adjacent to the site boundary line, a front wall extending from the side wall to the opposite side of the site boundary line, having an opening, and protruding from the front wall so as to be continuous with the side wall. A design method for a building including a sleeve wall, wherein one end of the line segment is moved on the boundary line of the site while maintaining a state where the line segment of a predetermined length is in contact with the tip of the sleeve wall. The opening portion is provided so that the opening portion does not overlap with the moving region of the line segment.

  According to this building design method, one end of a line segment is moved on the site boundary line while maintaining a state in which the line segment of a predetermined length is in contact with the end of the sleeve wall. By providing the opening so that the opening does not overlap the moving area of the line segment at this time, the fire safety of the building is ensured. As described above, since the position of the opening is determined using the moving region of the line segment having a predetermined length, it is possible to easily design a building with high fire safety.

  In addition, in the above design method, the line segment movement region when the end of the line segment is moved on the site boundary line while keeping the line segment of a predetermined length in contact with the end of the sleeve wall is fireproof. An opening with high performance is provided. According to this design method, since the opening portion having a high fire resistance is provided in the moving region of the predetermined length of the line segment, the fire resistance in the opening portion can be easily designed according to the position where the opening portion is provided. Can do.

  The building design method of the present invention includes a side wall adjacent to the site boundary line, a front wall extending from the side wall to the opposite side of the site boundary line, having an opening, and protruding from the front wall so as to be continuous with the side wall. A design method for a building including a sleeve wall, wherein one end of the line segment is moved on the boundary line of the site while maintaining a state where the line segment of a predetermined length is in contact with the tip of the sleeve wall. The projecting dimension of the sleeve wall is set so that the front wall does not overlap the movement area of the line segment.

  According to this building design method, one end of a line segment is moved on the site boundary line while maintaining a state in which the line segment of a predetermined length is in contact with the end of the sleeve wall. The projecting dimension of the sleeve wall is set so that the front wall does not overlap the moving area of the line segment at this time. Thereby, the position of the front wall is retracted with respect to the sleeve wall, and the fire safety of the building is ensured. As described above, since the projecting dimension of the sleeve wall is set using the moving region of the line segment having a predetermined length, it is possible to easily design a building having high fire safety.

  The building is further equipped with a ridge protruding from the upper end of the front wall and continuing to the upper end of the sleeve wall. The projecting dimension of the heel is set so that the front wall does not overlap the movement area of the line segment when moved. According to this design method, it is possible to easily design a building whose fire safety is improved by a fence.

  The building is further equipped with a ridge protruding from the upper end of the front wall and continuing to the upper end of the sleeve wall. The projecting dimension of the ridge is set so that the opening does not overlap the movement area of the line segment when moved. According to this design method, it is possible to easily design a building whose fire safety is improved by a fence.

  According to the building of the present invention designed by any one of the above design methods, a building having high fire safety can be provided.

  According to the present invention, a building with high fire safety can be designed easily.

It is a perspective view which shows the building which concerns on one Embodiment of this invention. It is a plane sectional view which shows the design method of the position of the opening part on the basis of a site boundary line. It is a plane sectional view which shows the design method of the protruding dimension of the sleeve wall on the basis of a site boundary line. It is a perspective view which shows the design method etc. of the 3rd floor fence and the 3rd floor front wall. It is a plane sectional view showing the design method of the 3rd floor 1st sleeve wall, the 3rd floor 2nd sleeve wall, and the 3rd floor front wall.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the following description, the case where a sleeve wall is provided on one side (the adjacent land Y side) of the building 1 will be mainly described. That is, the configuration of the outer walls and / or openings on the first and third floors shown in FIG. 1 will be mainly described. When the sleeve wall is provided on the other side of the building 1 (neighboring Z side), that is, the configuration of the outer wall and / or opening of the second floor shown in FIG. 1 is also designed by the same design method as the first and third floors. obtain.

  As shown in FIG. 1, the building 1 is a three-story building built on the site X. The outer peripheral walls of each floor of the building 1 are each formed in a substantially rectangular shape in plan view. The outer surface of the outer peripheral wall of each floor of the building 1 is configured by a member having fire prevention performance such as ALC (lightweight cellular concrete). Site X is adjacent to road R. Note that, when the building 1 is viewed from the road R side, the adjacent land Y is adjacent to the left side of the site X. A building not shown is also built in the adjacent land Y. For example, a linear site boundary line B extends between the site X and the adjacent site Y. In the building 1, the side facing the road R is the front of the building 1.

  As shown in FIG. 1, the first floor outer peripheral wall 10 of the first floor of the building 1 is recessed in a rectangular shape with the corners on the adjacent land Y side and the road R side facing the indoor side. The first-floor outer peripheral wall 10 includes a first-floor side wall 11, a first-floor receding front wall (front wall) 12, a first-floor receding side wall 13, a first-floor front wall 14, and a first-floor side wall 18.

  The first-floor side wall 11 is located on the adjacent land Y side and is close to the site boundary line B. The first floor receding front wall 12 extends from the first floor side wall 11 to the opposite side of the site boundary line B. One end of the first floor receding front wall 12 is connected to one end of the first floor side wall 11 (end on the road R side). The first floor receding front wall 12 is inclined with respect to the first floor side wall 11 at an angle of 90 degrees in plan view. One end of the first floor receding side wall 13 is connected to the other end of the first floor receding front wall 12. The first floor receding side wall 13 is inclined at an angle of 90 degrees in plan view with respect to the first floor receding front wall 12.

  One end of the first floor front wall 14 is connected to the other end of the first floor receding side wall 13 (end on the road R side). The first floor front wall 14 is inclined with respect to the first floor receding side wall 13 at an angle of 90 degrees in plan view. The first-floor side wall 11, the first-floor receding front wall 12, the first-floor receding side wall 13, and the first-floor front wall 14 form a substantially W-shaped wall surface in plan view. The first floor side wall 18 is arranged in parallel with the first floor side wall 11, and one end is connected to the other end of the first floor front wall 14.

  A first-floor sleeve wall 11 a that protrudes toward the road R side is provided at the end of the first-floor side wall 11 on the road R side. That is, the first-floor sleeve wall 11a is projected along the extending direction of the first-floor side wall 11 in a plan view, and the first-floor side wall 11 and the first-floor sleeve wall 11a are provided in a straight line with each other. In other words, the first-floor sleeve wall 11 a protrudes from the first-floor receding front wall 12 so as to be continuous with the first-floor side wall 11.

  An entrance (opening) for entering and exiting the building 1 is provided on the whole or a part of the first floor receding front wall 12.

  On the upper part of the first floor outer peripheral wall 10, a first floor fence 15 is provided that protrudes from the upper end of the first floor receding front wall 12 toward the road R side. The first floor fence 15 is constituted by the floor of the second floor and the floor of the second floor veranda 26. The eaves back of the eaves 15 of the first floor has an eaves ceiling made of a plate material having fire prevention performance. The first floor ridge 15 protrudes from the upper end of the first floor receding front wall 12 to the position of the end of the first floor sleeve wall 11a on the road R side. The edge of the first floor ridge 15 on the adjacent land Y side is continuous with the upper end of the first floor sleeve wall 11a.

  The third floor outer peripheral wall 30 of the third floor of the building 1 has a corner portion on the adjacent land Y side and road R side that is recessed in a rectangular shape toward the indoor side. The third-floor outer peripheral wall 30 includes a third-floor side wall 31, a third-floor receding front wall (front wall) 32, a third-floor receding side wall 33, a third-floor front wall 34, and a third-floor side wall 38.

  The third floor side wall 31 is located on the adjacent land Y side and is close to the site boundary line B. The third floor receding front wall 32 extends from the third floor side wall 31 to the opposite side of the site boundary line B. One end of the third-floor receding front wall 32 is connected to one end of the third-floor side wall 31 (end on the road R side). The third floor receding front wall 32 is inclined with respect to the third floor side wall 31 at an angle of 90 degrees in plan view. One end of the third floor receding side wall 33 is connected to the other end of the third floor receding front wall 32. The third floor receding side wall 33 is inclined with respect to the third floor receding front wall 32 at an angle of 90 degrees in plan view.

  One end of the third floor front wall 34 is connected to the other end of the third floor receding side wall 33 (the end on the road R side). The third floor front wall 34 is inclined at an angle of 90 degrees in plan view with respect to the third floor receding side wall 33. The third floor side wall 31, the third floor receding front wall 32, the third floor receding side wall 33, and the third floor front wall 34 form a substantially W-shaped wall surface in plan view. The third floor side wall 38 is disposed in parallel with the third floor side wall 31, and one end is connected to the other end of the first floor front wall 34.

  A third-floor first sleeve wall 31 a that protrudes toward the road R side is provided at the end of the third-floor side wall 31 on the road R side. That is, the third-floor first sleeve wall 31a projects along the extending direction of the third-floor side wall 31 in plan view, and the third-floor side wall 31 and the third-floor first sleeve wall 31a are provided in a straight line with each other. . In other words, the third-floor first sleeve wall 31 a protrudes from the third-floor receding front wall 32 so as to be continuous with the third-floor side wall 31.

  A third-floor second sleeve wall 34a is provided at the end of the third-floor front wall 34 on the adjacent land Y side so as to protrude toward the adjacent land Y side. That is, the third-floor second sleeve wall 34a projects along the extending direction of the third-floor front wall 34 in plan view, and the third-floor front wall 34 and the third-floor second sleeve wall 34a are aligned with each other. Provided. In other words, the third-floor second sleeve wall 34 a protrudes from the third-floor receding side wall 33 so as to be continuous with the third-floor front wall 34.

  A third-floor veranda 36 is formed in a region surrounded by the third-floor first sleeve wall 31a, the third-floor receding front wall 32, the third-floor receding side wall 33, and the third-floor second sleeve wall 34a. The floor of the third-floor veranda 36 includes a second-floor ceiling and a second-floor fence 25.

  The whole or part of the third floor receding front wall 32 and the third floor receding side wall 33 is provided with an opening such as a door for entering and exiting the third floor veranda 36 and a window for daylighting. A handrail (not shown) is provided between the end of the third floor first sleeve wall 31a on the road R side and the third floor second sleeve wall 34a.

  A third-floor fence 35 that protrudes from the third-floor receding front wall 32 toward the road R side is provided so as to cover a part of the upper portion of the third-floor veranda 36. The third floor fence 35 is provided from the third floor receding front wall 32 to the third floor receding side wall 33. On the back of the eaves of the third-floor fence 35, an eaves ceiling is formed by a plate material having fire prevention performance. The third-floor ridge 35 projects from the third-floor receding front wall 32 to a position that is about half the projecting dimension of the third-floor first sleeve wall 31a toward the road R side. The end of the third floor ridge 35 on the road R side is continuous with the upper end of the third floor second sleeve wall 34a. The end of the third floor ridge 35 on the adjacent ground Y side is continuous with the upper end of the third floor first sleeve wall 31a. The edge of the third floor ridge 35 on the adjacent land Z side is continuous with the upper end of the third floor receding front wall 32. The third-floor fence 35 is continuous with the third-floor roof (the roof of the building 1) 37.

  Next, the positional relationship between the third floor receding front wall 32 and the adjacent land Y and the design method will be described by taking the third floor of the building 1 as an example. Here, when an opening is provided in the third floor receding front wall 32, the straight line distance between the third floor receding front wall 32 and the adjacent ground Y is more than a predetermined distance in order to avoid a flame from the adjacent ground Y. Is desirable. In addition, when the linear distance between the opening of the third-floor receding front wall 32 and the adjacent ground Y is within a predetermined distance, the opening should be a highly fire-proof opening, for example, by providing a fire door. Is desirable. These are also stipulated in laws and regulations such as the Building Standard Law.

  As shown in FIG. 2, in the design method of the building 1, while maintaining a state where the line segment L <b> 1 having a predetermined length is in contact with the tip portion (tip portion on the road R side) 31 b of the third-floor first sleeve wall 31 a. The opening is provided so that the opening does not overlap the movement area A1 of the line segment L1 when one end of the line segment L1 is moved on the site boundary line B. That is, in the 3rd floor receding front wall 32, the region where the opening can be provided is the intersection P1 between the curved locus formed by the other end of the line segment L1 and the outer surface 32a of the 3rd floor receding front wall 32. , P2 as a reference. In the third floor receding front wall 32, openings can be provided in areas Aa and Ab outside the moving area A1 of the line segment L1 with the intersection points P1 and P2 as a reference. Thus, regarding the 3rd floor receding front wall 32, the planar moving area A1 is generated by moving the line segment L1 on the plane.

  In this case, the fire resistance of the opening may be high or low. In the example shown in FIG. 2, the length of the line segment L1 is 5 m, but this length can be appropriately changed according to the law and according to the hierarchy. For example, when the hierarchy is the first floor, the length of the line segment L1 may be 3 m.

  According to the design method of the building 1, one end of the line segment L1 moves on the site boundary line B while keeping the line segment L1 of a predetermined length in contact with the tip 31b of the first floor wall 31a on the third floor. Be made. The fire prevention safety of the building 1 is ensured by providing the openings in the areas Aa and Ab so that the opening does not overlap the moving area A1 of the line segment L1 at this time. Thus, since the position of the opening is determined using the movement area A1 of the line segment L1 having a predetermined length, the building 1 with high fire safety can be designed easily. That is, the building 1 with high fire safety is provided.

  Further, in the third floor receding front wall 32, an opening with high fire resistance may be provided in a region Ac within the moving region A1 of the line segment L1 with respect to the intersections P1 and P2. According to this design method, the area Ac that overlaps the movement area A1 of the line segment L1 having a predetermined length is provided with an opening having high fire resistance. Thus, the fireproof property in the opening can be easily designed according to whether the position where the opening is provided is outside the moving area A1 of the line segment L1 or inside the moving area A1.

  Unlike the design method for determining the opening position described above, a method for determining the projecting dimension of the third-floor first sleeve wall 31a (or the receding dimension of the third-floor receding front wall 32) may be employed. That is, as shown in FIG. 3, the projecting dimension of the third-floor first sleeve wall 31a may be set so that the third-floor receding front wall 32 does not overlap the moving area A1 of the line segment L1. That is, the projecting dimension La of the third-floor first sleeve wall 31a is set so that the curved locus formed by the other end of the line segment L1 does not intersect the outer surface 32a of the third-floor receding front wall 32. Can do. In other words, the 3rd floor receding front wall 32 can be retreated so that the curved trajectory formed by the other end of the line segment L1 does not intersect the outer surface 32a of the 3rd floor receding front wall 32.

  In this case, the fire resistance of the opening may be high or low. In the example shown in FIG. 2, the length of the line segment L1 is 5 m, but this length can be appropriately changed according to the law and according to the hierarchy.

  According to the design method of the building 1, one end of the line segment L1 moves on the site boundary line B while keeping the line segment L1 of a predetermined length in contact with the tip 31b of the first floor wall 31a on the third floor. Be made. The protruding dimension La of the third-floor first sleeve wall 31a is set so that the third-floor receding front wall 32 does not overlap the movement area A1 of the line segment A1 at this time. Thereby, the position of the 3rd floor retreat front wall 32 is retracted with respect to the 3rd floor first sleeve wall 31a, and the fire safety of the building 1 is ensured. Thus, since the protruding dimension La of the third-floor first sleeve wall 31a is set using the moving area A1 of the line segment L1 having a predetermined length, it is possible to easily design the building 1 with high fire safety. it can.

  The same design method can also be applied to the third floor fence 35. That is, as shown in FIG. 4, the line segment L1 when the one end of the line segment L2 is moved on the site boundary line B while keeping the state where the line segment L2 is in contact with the tip of the third-floor wall 35 is shown. The projecting dimension of the third floor ridge 35 is set so that the third floor receding front wall 32 does not overlap the movement area A2. In this case, a vertical plane Ba passing through the site boundary line B is assumed, and one end of the line segment L2 is moved on the vertical plane Ba. Furthermore, the line segment L2 can be a line segment on a plurality of virtual planes S including a virtual straight line L3 passing through the upper edge of the third floor fence 35 on the site boundary line B side. As described above, regarding the third floor basket 35, the three-dimensional movement region A2 is generated by moving the line segment L2 three-dimensionally (changing the height of one end of the line segment L2). According to this design method, the building whose fire safety is improved by the third-floor fence 35 can be designed easily.

  When an opening is provided in the third floor receding front wall 32, the projecting dimension of the third floor ridge 35 may be set so that the opening does not overlap the moving area A2 of the line segment L1. According to this design method, it is possible to easily design a building whose fire safety is improved by a fence.

  Next, taking the 3rd floor of the building 1 as an example, the positional relationship between the 3rd floor receding front wall 32 and the 3rd floor receding side wall 33, the adjacent land Y and the road R will be described. Here, when providing an opening in the 3rd floor receding front wall 32 or the 3rd floor receding side wall 33, in order to avoid a flame from the adjacent Y or the road R, the 3rd floor receding front wall 32 and the 3rd floor receding side wall 33, It is desirable that the linear distance between the adjacent land Y and the road R is more than a predetermined distance. This is also stipulated in laws and regulations such as the Building Standard Law.

  In Building 1, the 3rd floor receding front wall 32 and the 3rd floor receding side wall 33 do not exist at a position where the straight distance from the adjacent land Y is within 5m, and the straight distance from the road center line R1 of the road R is within 5m. The 3rd floor receding front wall 32 and the 3rd floor receding side wall 33 are designed so as not to exist.

  As shown in FIG. 5, the third floor receding side wall 33 is provided at a position where the distance from the adjacent land Y is 5 m or more. The third floor receding front wall 32 is provided at a position where the distance from the road center line R1 is 5 m or more.

  Further, the movement of the line segment L4 when one end of the line segment L4 is moved on the site boundary line B while maintaining the state where the line segment L4 of a predetermined length is in contact with the tip of the first floor wall 31a on the third floor. The protruding dimension La from the third floor side wall 31 to the road R side in the third floor first sleeve wall 31a is set so that the third floor receding side wall 33 does not overlap the region. When the straight line L4 and the third floor receding side wall 33 do not overlap, the third floor receding side wall 33 and the adjacent ground Y are separated by a straight line distance of 5 m or more.

  Similarly, the line segment L5 when the one end of the line segment L5 is moved on the road center line R1 while maintaining the state where the line segment L5 of a predetermined length is in contact with the tip of the third-floor second sleeve wall 34a. The protruding dimension from the third floor front wall 34 to the adjacent Y side in the third floor second sleeve wall 34a is set so that the third floor receding side wall 33 does not overlap the moving region. When the straight line L5 and the third floor receding side wall 33 do not overlap, the third floor receding side wall 33 and the road center line R1 are separated by a straight line distance of 5 m or more.

  As for the first floor or the second floor, the first floor retreat front wall 12, the first floor retreat, based on the distance to the adjacent grounds Y and Z and the distance to the road center line R1 as in the third floor. The arrangement position of the side wall 13, the second floor receding front wall 22, and the second floor receding side wall 23 (see FIG. 4) is set, and the projecting dimensions of the first floor first sleeve wall 11a and the second floor second sleeve wall 24a are set.

  Also, on the first floor, depending on the distance between the first floor receding side wall 13 and the road center line R1 that are desired to be separated, the ground Y adjacent to the first floor front wall 14 is the same as the third floor second sleeve wall 34a and the like on the third floor. A sleeve wall projecting from the end of the side toward the adjacent Y side can be provided.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. As the structure of the building 1, an appropriate structure such as a steel structure or a wooden structure can be applied. An appropriate floor plan can be applied to the internal structure of each floor of the building 1.

  DESCRIPTION OF SYMBOLS 1 ... Building, 11 ... 1st floor side wall, 11a ... 1st floor sleeve wall, 12 ... 1st floor receding front wall (front wall), 15 ... 1st floor wall, 31 ... 3rd floor side wall, 31a ... 3rd floor 1st sleeve wall, 32 ... 3rd floor receding front wall (front wall), 35 ... 3rd floor, B ... Site boundary, L1 ... Line segment.

Claims (10)

A side wall proximate to the site boundary line, a front wall extending from the side wall to the opposite side of the site boundary line and having an opening, and a sleeve wall protruding from the front wall so as to be continuous with the side wall A method for designing a building comprising
The opening does not overlap the moving region of the line segment when one end of the line segment is moved on the site boundary line while maintaining a state where the line segment of a predetermined length is in contact with the distal end portion of the sleeve wall. As described above, the building design method is characterized by providing the opening. While the line segment of a predetermined length is in contact with the tip of the sleeve wall, the movement area of the line segment when the one end of the line segment is moved on the site boundary line is highly fireproof. The building design method according to claim 1, wherein another opening is provided. A side wall proximate to the site boundary line, a front wall extending from the side wall to the opposite side of the site boundary line and having an opening, and a sleeve wall protruding from the front wall so as to be continuous with the side wall A method for designing a building comprising
The front wall does not overlap the moving area of the line segment when one end of the line segment is moved on the site boundary line while keeping the line segment of a predetermined length in contact with the end of the sleeve wall. As described above, a projecting dimension of the sleeve wall is set. The building further includes a ridge protruding from the upper end of the front wall and continuing to the upper end of the sleeve wall,
While maintaining the state where the line segment is in contact with the front end portion of the ridge, the front wall does not overlap the movement area of the line segment when one end of the line segment is moved on a site boundary line. The building design method according to any one of claims 1 to 3, wherein a projecting dimension is set. The building further includes a ridge protruding from the upper end of the front wall and continuing to the upper end of the sleeve wall,
While maintaining the state where the line segment is in contact with the front end of the ridge, the opening does not overlap the movement area of the line segment when one end of the line segment is moved on a site boundary line. The building design method according to any one of claims 1 to 3, wherein a projecting dimension is set.   A side wall proximate to the site boundary line, a front wall extending from the side wall to the opposite side of the site boundary line and having an opening, and a sleeve wall protruding from the front wall so as to be continuous with the side wall And a building with
  The opening does not overlap the moving region of the line segment when one end of the line segment is moved on the site boundary line while maintaining a state where the line segment of a predetermined length is in contact with the distal end portion of the sleeve wall. As described above, the building is provided with the opening.   While the line segment of a predetermined length is in contact with the tip of the sleeve wall, the movement area of the line segment when the one end of the line segment is moved on the site boundary line is highly fireproof. The building according to claim 6, wherein another opening is provided.   A side wall proximate to the site boundary line, a front wall extending from the side wall to the opposite side of the site boundary line and having an opening, and a sleeve wall protruding from the front wall so as to be continuous with the side wall And a building with
  The front wall does not overlap the moving area of the line segment when one end of the line segment is moved on the site boundary line while keeping the line segment of a predetermined length in contact with the end of the sleeve wall. As described above, a projecting dimension of the sleeve wall is set.   Further comprising a ridge protruding from the upper end of the front wall and continuing to the upper end of the sleeve wall,
  While maintaining the state where the line segment is in contact with the front end portion of the ridge, the front wall does not overlap the movement area of the line segment when one end of the line segment is moved on a site boundary line. The building according to any one of claims 6 to 8, wherein a projecting dimension is set.   Further comprising a ridge protruding from the upper end of the front wall and continuing to the upper end of the sleeve wall,
  While maintaining the state where the line segment is in contact with the front end of the ridge, the opening does not overlap the movement area of the line segment when one end of the line segment is moved on a site boundary line. The building according to any one of claims 6 to 8, wherein a projecting dimension is set.

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