Building structure

Abstract

To suppress complication and a high cost of an outer peripheral frame while compensating for a difference in horizontal force to be born between floors to realize simplifying of an internal frame in a building structure provided with the internal frame configured to have a plurality of inner columns for supporting beams of a plurality of layers with a beam extension part on a tip side extending outward and the outer peripheral frame configured to have a plurality of outer peripheral columns for connecting the upper and lower beam extension parts at each floor.SOLUTION: In each of upper floors F2 and F3 and a lower floor F1 among a plurality of floors F1 to F3 of an outer peripheral frame 20, outer peripheral columns 21 to 23 are configured as outer peripheral inclined columns 21 to 23 inclining at prescribed inclination angles α and β in a vertical direction. The inclination angle β of the upper floor side outer peripheral inclined columns 22, 23 at the upper floors F2, F3 and the inclination angle α of the lower floor side outer peripheral inclined column 21 at the lower floor F1 are different, and thus the upper floors F2, F3 and the lower floor F1 at the outer peripheral frame 20 are different in horizontal rigidity.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a building structure comprising an internal framework comprising beams on multiple floors and a number of internal columns that support the beams with their tip-side beam protrusions protruding outward, and a peripheral frame comprising a number of peripheral columns that connect the upper and lower beam protrusions on each floor. [Background technology]

[0002] As a building structure having such a perimeter frame, there is known one in which the perimeter columns of the perimeter frame are configured as perimeter inclined columns that are inclined at a predetermined angle with respect to the vertical direction (see, for example, Patent Document 1). In the building structure described in Patent Document 1, the perimeter columns are configured as perimeter inclined columns (diagonal columns). This makes it possible to improve the horizontal rigidity of the entire building structure, for example, without making any changes to the internal framework. Furthermore, in the building structure described in Patent Document 1, the perimeter inclined columns are arranged in a zigzag pattern between multiple stories, and the inclination direction of the perimeter inclined columns is made different on each story, thereby further improving the horizontal rigidity. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-026835 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a building structure having multiple floors, the magnitude of the horizontal force to be borne may differ between the upper and lower floors of the multiple floors of the perimeter frame. For example, in the perimeter frame, the horizontal force to be borne becomes more dominant than the vertical force to be borne on the lower floor compared to the upper floor. However, in the building structure described in the above Patent Document 1, the number of peripheral inclined columns and the inclination angle to the vertical direction on each floor are all set to be the same on the perimeter frame, so in order to compensate for the difference in the horizontal force to be borne on each floor with the perimeter frame, it is necessary to increase the number of peripheral inclined columns on the other floors to match the floor with the largest horizontal force to be borne. This results in floors with an excessive number of peripheral inclined columns, which causes the structure of the perimeter frame to become complicated. Furthermore, if the difference in horizontal forces to be borne by each floor is to be compensated for by the internal structure as described above, this will lead to the internal structure becoming more complicated, resulting in problems such as difficulty in securing effective internal space in the internal structure. In light of this situation, the main objective of the present invention is to provide a technology in a building structure having an internal framework comprising beams on multiple floors and a number of internal columns that support the beams with their tip beam protrusions extended outward, and a perimeter frame comprising a number of peripheral columns that connect the upper and lower beam protrusions on each floor, which simplifies the internal framework by using the perimeter frame to compensate for the difference in horizontal forces to be borne by each floor, while also preventing the perimeter frame from becoming too complicated and expensive. [Means for solving the problem]

[0005] The first characteristic configuration of the present invention is an internal frame including beams of a plurality of stories and a plurality of internal columns supporting the beams with their tip beam overhangs protruding outward; A building structure comprising an outer perimeter frame having a plurality of outer perimeter columns connecting upper and lower beam projections on each floor, On each of the upper and lower floors of the multiple floors of the perimeter frame, the perimeter columns are configured as perimeter inclined columns inclined at a predetermined angle with respect to the vertical, and the inclination angle of the upper floor-side perimeter inclined columns which are the perimeter inclined columns on the upper floors and the inclination angle of the lower floor-side perimeter inclined columns which are the perimeter inclined columns on the lower floors are different from each other, so that the horizontal rigidity of the upper floors and the lower floors in the perimeter frame are different from each other.

[0006] According to this configuration, since the larger the inclination angle of the peripheral inclined columns in the peripheral frame, the greater the horizontal force (horizontal rigidity) that the peripheral inclined columns can bear, when the horizontal forces to be borne by the upper and lower floors are different, the inclination angles of the upper floor peripheral inclined columns and the lower floor peripheral inclined columns can be made different from each other in accordance with the horizontal forces to be borne by the respective floors, thereby making the horizontal rigidity of the upper and lower floors in the peripheral frame different from each other. Thus, with a rational and simple configuration in which the inclination angles of the peripheral inclined columns are set differently for the upper and lower floors in the peripheral frame, the difference in the horizontal forces to be borne by the upper and lower floors can be efficiently compensated for by the peripheral frame, and the horizontal forces to be borne by the upper and lower floors in the internal framework can be made as equal as possible. Therefore, the present invention provides a technology that can simplify the internal structure in a building structure having beams on multiple floors and a number of internal columns that support the beams with their tip beam protrusions extended outward, and a perimeter frame having a number of peripheral columns that connect the upper and lower beam protrusions on each floor, by using the perimeter frame to compensate for the difference in horizontal forces that must be borne by each floor, while also preventing the perimeter frame from becoming too complicated and expensive.

[0007] A second characteristic configuration of the present invention is that the inclination angle of the lower floor-side peripheral inclined columns is set to be larger than the inclination angle of the upper floor-side peripheral inclined columns.

[0008] According to this configuration, since the horizontal force that must be borne by the lower floor is generally greater than that of the upper floor, by setting the inclination angle of the outer periphery inclined column on the lower floor side larger than the inclination angle of the outer periphery inclined column on the upper floor side, it is possible to appropriately compensate for this difference in the horizontal force that must be borne.

[0009] The third characteristic configuration of the present invention is that the upper floor side outer peripheral inclined columns are arranged on the upper floor without intersecting with each other, The point is that on the lower floor, a plurality of the lower floor side outer peripheral inclined columns intersect with each other and are joined to each other at the intersections.

[0010] According to this configuration, when multiple upper floor-side peripheral inclined columns are arranged on an upper floor without intersecting with each other, multiple lower floor-side peripheral inclined columns having a larger inclination angle than the upper floor-side peripheral inclined columns can be arranged on a lower floor by intersecting with each other efficiently. Furthermore, since the lower floor-side peripheral inclined columns intersecting with each other are joined to each other at the intersections, buckling when a compressive force is transmitted to the lower floor-side peripheral inclined columns can be suppressed. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of the exterior of a building structure according to the present embodiment; [Diagram 2] Front view of the internal structure of the building structure of this embodiment [Diagram 3] Left side view of the exterior of the building structure of this embodiment. [Figure 4] Left side view of the internal structure of the building structure of this embodiment [Diagram 5] Front view (a) and left side view (b) showing the joint at the intersection of the outer peripheral inclined columns on the lower floor DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. As shown in Figures 1 to 4, the building structure 100 of this embodiment is an eight-story building structure consisting of nine floors L1 to L9, and is composed of an internal framework 10 (see Figures 2 and 4) and an outer peripheral frame 20 (see Figures 1 and 3) that surrounds it. 1 and 3 are a front view and a left side view showing the exterior of the building structure 100 of this embodiment, and the configuration of the outer perimeter frame 20 is mainly shown in these Figs. 1 and 3. Meanwhile, Figs. 2 and 4 are a front view and a left side view showing the internal structure of the building structure 100 of this embodiment, and the configuration of the internal framework 10 is mainly shown in these Figs. 2 and 4. In addition, for reference, the outer perimeter frame 20 is shown by a virtual line (two-dot chain line) in Figs. 2 and 4.

[0013] As shown in Figures 2 and 4, the internal frame 10 has beams 14 on each of the stories L1 to L9 and a number of internal columns 12 that support the beams 14 with their tip-side beam protruding portions 14a protruding outward. That is, on each of the stories L1 to L9, the tip portions of the beams 14 arranged in a lattice pattern in plan view protrude outward as beam protruding portions 14a from the outermost internal columns 12. On the periphery of each of the stories L1 to L9, peripheral small beams 15 are provided that are installed between the tips of the adjacent beam protruding portions 14a. In the building structure 100 of this embodiment, the outer peripheries of the second to ninth stories L2 to L9 are all substantially the same shape in plan view, but the outer periphery of the first story L1 protrudes outward from the outer peripheries of the second to ninth stories L2 to L9. The shape of the outer periphery of each story L1 to L9 in plan view can be appropriately set to a rectangle, parallelogram, or the like, and the size of each can also be appropriately set.

[0014] As shown in Figures 1 and 3, the outer perimeter frame 20 is composed of a number of outer perimeter columns 21-28 that connect the outer perimeter joists 15 installed at the ends of the upper and lower beam projection portions 14a on each floor F1-F8, and an exterior wall is provided on the outside of the columns, although this is not shown in the figure. That is, on the first floor F1, a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the lower first floor L1 and a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the upper second floor L2 are connected by a plurality of first floor peripheral columns 21. On the second floor F2, a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the lower second floor L2 and a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the upper third floor L3 are connected by a number of second floor peripheral columns 22. On the third floor F3, a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the lower third floor L3 and a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the upper fourth floor L4 are connected by a plurality of third floor peripheral columns 23. On the fourth floor F4, a plurality of fourth-floor peripheral columns 24 connect the outer periphery joists 15 provided on the periphery connecting the ends of the beam extension portions 14a of the lower fourth floor L4 and the outer periphery joists 15 provided on the periphery connecting the ends of the beam extension portions 14a of the upper fifth floor L5. On the fifth floor F5, a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the fifth floor L5 on the lower side and a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the sixth floor L6 on the upper side are connected by a plurality of fifth floor peripheral columns 25. On the 6th floor F6, a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a on the lower 6th floor L6 and a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a on the upper 7th floor L7 are connected by a plurality of 6th floor peripheral columns 26. On the 7th floor F7, the outer perimeter joists 15 provided on the periphery connecting the ends of the beam extension portions 14a of the lower 7th floor L7 and the outer perimeter joists 15 provided on the periphery connecting the ends of the beam extension portions 14a of the upper 8th floor L8 are connected by a number of 7th floor outer perimeter columns 27. On the 8th floor F8, a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the lower 8th floor L8 and a peripheral joist 15 provided on the periphery connecting the ends of the beam extension portions 14a of the upper 9th floor L9 are connected by a plurality of 8th floor peripheral columns 28.

[0015] In this building structure 100, the magnitude of the horizontal force to be borne during an earthquake or the like may differ among the floors F1 to F8 of the peripheral frame 20. Specifically, in the peripheral frame 20, when comparing the lower floor side and the upper floor side of each floor F1 to F8, the horizontal force to be borne is more dominant than the vertical force to be borne on the lower floor side compared to the upper floor side. For example, when comparing the first floor F1 on the lower floor side with the second floor F2 and the third floor F3 on the upper floor side across the second floor L2, the horizontal force to be borne on the first floor F1 on the lower floor side is greater than the horizontal force to be borne on the second floor F2 and the third floor F3 on the upper floor side. Also, when comparing the second floor F2 and the third floor F3 on the lower floor side with the fourth floor F4, the fifth floor F5, and the sixth floor F6 on the upper floor side across the fourth floor L4, the horizontal force to be borne on the second floor F2 and the third floor F3 on the lower floor side is greater than the horizontal force to be borne on the fourth floor F4, the fifth floor F5, and the sixth floor F6 on the upper floor side. In addition, when comparing the lower floors F4, F5, and F6 on the 4th floor, and the upper floors F7 and F8 on the 8th floor across from the 7th floor L7, the horizontal forces that must be borne by the lower floors F4, F5, and F6 on the 5th floor are greater than the horizontal forces that must be borne by the upper floors F7 and F8 on the 7th floor. Therefore, in the building structure 100 of this embodiment, the difference in horizontal forces to be borne by each floor F1 to F8 is compensated for by the outer perimeter frame 20, thereby simplifying the internal framework 10, while adopting a characteristic configuration to suppress the complexity and high cost of the outer perimeter frame 20, the details of which are explained below.

[0016] As shown in Figures 1 and 3, on each of the first to sixth floors F1 to F6 of the peripheral frame 20, the peripheral columns 21 to 26 are configured as peripheral inclined columns 21 to 26 that are inclined at predetermined inclination angles α, β, and γ with respect to the vertical direction. Specifically, the first floor peripheral inclined columns 21 installed on the first floor F1 are parallel to the exterior wall that protrudes outward toward the bottom, and are configured as first floor peripheral inclined columns 21 that are inclined at an inclination angle α with respect to the perpendicular lines of the peripheral joists 15 of the upper and lower stories L1 and L2. In addition, on the first floor F1, in order to efficiently arrange many first floor peripheral inclined columns 21, a plurality of pairs of first floor peripheral inclined columns 21 that cross each other in an X-shape are installed side by side. As shown in Fig. 5, the intersections 21A of the pairs of crossing first floor peripheral inclined columns 21 are joined to each other by joint pins 35, which suppresses buckling when a compressive force is transmitted to the first floor peripheral inclined columns 21.

[0017] The second floor peripheral inclined columns 22 and the third floor peripheral inclined columns 23 provided on the second floor F2 and the third floor F3 are configured as the second floor peripheral inclined columns 22 and the third floor peripheral inclined columns 23, which are parallel to the vertically installed exterior walls and incline at an inclination angle β different from the inclination angle α with respect to the perpendicular line (vertical direction) of the peripheral joists 15 of the upper and lower stories L2 to L4, respectively. The second floor peripheral inclined columns 22 and the third floor peripheral inclined columns 23 are connected to the upper end of the above-mentioned first floor peripheral inclined columns 21 as linear peripheral inclined columns 22, 23, and on the second floor F2 and the third floor F3, a pair of linear peripheral inclined columns 22, 23 connected to each other in a V-shape are installed side by side. In this way, the inclination angle β of the second floor outer periphery inclined column 22 and the third floor outer periphery inclined column 23, which are the upper floor side outer periphery inclined columns on the upper floors 2nd and 3rd floors F2 and F3, and the inclination angle α of the first floor outer periphery inclined column, which is the lower floor side outer periphery inclined column on the lower floor 1st floor F1, are different between the first floor F1 on the lower floor side and the lower floor side outer periphery inclined column 21. As a result, the horizontal rigidity of the upper floors F2 and third floors F3 on the upper floors side and the first floor F1 on the lower floor side, which are sandwiched between the second floor L2 in the outer periphery frame 20, is different from that of the first floor F1 on the lower floor side. Furthermore, since the horizontal force that must be borne by the lower first floor F1 is greater than that borne by the upper second floor F2 and third floor F3, in order to appropriately compensate for this difference in horizontal force that must be borne, the inclination angle α of the first floor outer periphery inclined column 21 on the lower first floor F1 is set to be greater than the inclination angle β of the second floor outer periphery inclined column 22 and the third floor outer periphery inclined column 23 on the upper second floor F2 and third floor F3.

[0018] The 4th floor peripheral column 24, 5th floor peripheral column 25, and 6th floor peripheral column 26 installed on the 4th floor F4, 5th floor F5, and 6th floor F6 are configured as the 4th floor peripheral inclined column 24, 5th floor peripheral inclined column 25, and 6th floor peripheral inclined column 26, which are parallel to the vertically installed exterior wall and incline at an inclination angle γ different from the inclination angles α and β with respect to the perpendicular line (vertical direction) of the peripheral joists 15 on the upper and lower stories L4 to L7, respectively. The 4th floor peripheral column 24, 5th floor peripheral column 25, and 6th floor peripheral column 26 are connected as the linear peripheral inclined columns 24, 25, and 26 connected to the upper end of the above-mentioned 3rd floor peripheral inclined column 23, and on the 2nd floor F2 and the 3rd floor F3, a pair of linear peripheral inclined columns 24, 25, and 26 connected to each other in a V-shape are installed side by side. In this way, between the second floor F2 and the third floor F3 on the lower floor side and the fourth floor F4, the fifth floor F5, and the sixth floor F6 on the upper floor side, the inclination angle γ of the fourth floor outer periphery inclined column 24, the fifth floor outer periphery inclined column 25, and the sixth floor outer periphery inclined column 26 on the fourth floor F4, the fifth floor F5, and the sixth floor F6 on the upper floor side is different from the inclination angle β of the second floor outer periphery inclined column 22 and the third floor outer periphery inclined column 23 on the second floor F2 and the third floor F3 on the lower floor side, and as a result, the horizontal rigidity of the upper floors F4, the fifth floor F5, and the sixth floor F6 on the upper floor side and the second floor F2 and the third floor F3 on the lower floor side, which are sandwiched between the fourth floor L4, is different from each other in the periphery frame 20. Furthermore, since the horizontal force that must be borne by the lower floors, 2nd floor F2 and 3rd floor F3, is greater than that borne by the upper floors, 4th floor F4, 5th floor F5, and 6th floor F6, in order to appropriately compensate for this difference in horizontal force that must be borne, the inclination angle β of the 2nd floor peripheral inclined column 22 and the 3rd floor peripheral inclined column 23 on the lower floors, 2nd floor F2 and 3rd floor F3, is set to be greater than the inclination angle γ of the 4th floor peripheral inclined column 24, 5th floor peripheral inclined column 25, and 6th floor peripheral inclined column 26 on the upper floors, 4th floor F4, 5th floor F5, and 6th floor F6.

[0019] On the other hand, the 7th floor perimeter column 27 and 8th floor perimeter column 28 installed on the 7th floor F7 and 8th floor F8 are not configured as inclined perimeter columns as described above because the horizontal force they must bear is smaller than that of the other floors F1 to F6, but are configured as 7th floor perimeter vertical columns 27 and 8th floor perimeter vertical columns 28 that are parallel to the perpendicular lines (vertical direction) of the perimeter joists 15 on the upper and lower stories L8 to L9. The 7th floor perimeter column 27 and the 8th floor perimeter column 28 are connected as straight perimeter vertical columns 27, 28 connected to the upper end of the above-mentioned 6th floor peripheral inclined column 26, and on the 2nd floor F2 and the 3rd floor F3, a plurality of these straight perimeter vertical columns 27, 28 are installed side by side. In this way, between the 4th floor F4, 5th floor F5, and 6th floor F6 on the lower floors side and the 7th floor F7 and 8th floor F8 on the upper floors side, the inclination angle of the 7th floor outer periphery vertical column 27 and the 8th floor outer periphery vertical column 28 on the 7th floor F7 and 8th floor F8 on the upper floors side is 0, which is smaller than the inclination angle γ of the 4th floor outer periphery inclined column 24, 5th floor outer periphery inclined column 25, and 6th floor outer periphery inclined column 26 on the 4th floor F4, 5th floor F5, and 6th floor F6 on the lower floors side, so that the horizontal rigidity of the 7th floor F7 and 8th floor F8 on the upper floors side, which sandwich the seventh floor L7 in the outer periphery frame 20, is the smallest compared to the 4th floor F4, 5th floor F5, and 6th floor F6 on the lower floors side.

[0020] As described above, with the rational and simple structure of the perimeter frame 20, in which the inclination angles of the perimeter columns 21-28 are set to be larger on the lower floor side, the difference in the horizontal forces to be borne on each of the floors F1-F8, which becomes larger on the lower floor side, is efficiently compensated for by the perimeter frame 20. This allows the horizontal forces to be borne by the internal framework 10 to be equalized on each of the floors F1-F8.

[0021] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

[0022] (1) In the above embodiment, the inclination angle α of the 1st floor peripheral inclined column 21, the inclination angle β of the 2nd floor peripheral inclined column 22 and the 3rd floor peripheral inclined column 23, and the inclination angle γ of the 4th floor peripheral inclined column 24, the 5th floor peripheral inclined column 25, and the 6th floor peripheral inclined column 26 are set to be different, but the floors on which the inclination angles of the peripheral inclined columns are made different and the number of such floors can be changed as appropriate.

[0023] (2) In this embodiment, the inclination angles of the peripheral inclined columns 21-26 on each floor F1-F6 of the peripheral frame 20 are set to be larger on the lower floor side. However, the inclination angles of the peripheral inclined columns 21-26 on each floor F1-F6 can be appropriately set in accordance with the horizontal force to be borne on that floor. For example, the inclination angles of the peripheral inclined columns on the upper floor side may be set to be larger than the inclination angles of the peripheral inclined columns on the lower floor side. [Explanation of symbols]

[0024] 10 Internal structure 12 Internal columns 14 Beam 14a Beam overhang 20 Periphery frame 21 Periphery column (periphery inclined column) 21A Intersection 22 Periphery column (periphery inclined column) 23 Periphery column (periphery inclined column) 24 Periphery column (periphery inclined column) 25 Periphery column (periphery inclined column) 26 Periphery column (periphery inclined column) 27 Periphery pillar 28 Periphery pillar 100 Building Structure F1 1st floor F2 2nd floor F3 3rd floor F4 4th floor F5 5th floor F6 6th floor F7 7th floor F8 8th floor L1 1st layer L2 2nd layer L3 3rd layer L4 4th layer L5 5th layer L6 Layer 6 L7 Layer 7 L8 Layer 8 L9 Layer 9 α Inclination angle β Inclination angle γ Inclination angle

Claims

1. An internal framework including beams of each of a plurality of stories and a plurality of internal columns supporting the beams with their tip-side beam projections projecting outward; A building structure comprising an outer perimeter frame having a plurality of outer perimeter columns connecting upper and lower beam projections on each floor, A building structure in which the perimeter columns are configured as perimeter inclined columns on each of the upper and lower floors of the multiple stories of the perimeter frame at a predetermined angle with respect to the vertical, and the inclination angle of the upper floor-side perimeter inclined columns which are the perimeter inclined columns on the upper floors and the inclination angle of the lower floor-side perimeter inclined columns which are the perimeter inclined columns on the lower floors are different from each other, such that the horizontal rigidity of the upper and lower floors in the perimeter frame is different from each other.

2. 2. The building structure according to claim 1, wherein the inclination angle of the lower floor-side peripheral inclined columns is set to be larger than the inclination angle of the upper floor-side peripheral inclined columns.

3. A plurality of the upper floor side outer peripheral inclined columns are arranged on the upper floor without intersecting with each other, 3. The building structure according to claim 2, wherein a plurality of the lower floor side outer peripheral inclined columns are arranged on the lower floor so as to intersect with each other and be joined to each other at the intersections.

Images