Skeleton structure of building

Abstract

To provide a skeleton structure of buildings capable of making connection of an inclined column with a beam simpler.SOLUTION: A skeleton structure 1 of a building having a plurality of floors includes: a first inclined column 10 which extends inclining with respect to a vertical direction across the plurality of floors; a second inclined column 20 which extends inclining with respect to the vertical direction on the opposite side of the first inclined column 10 across the plurality of floors and whose one end is connected to one end of the first inclined column 10; and a plurality of beams 30 connected to the first inclined column 10 and the second inclined column 20 in corresponding floors. In the skeleton structure 1 of the building, the beam 30 is rigidly joined to the first inclined column 10 and the second inclined column 20 at connection parts 40, 50 where the first inclined column 10 and the second inclined column 20 are joined together and, in an intermediate part 10a of the first inclined column 10 and an intermediate part 20a of the second inclined column 20, a beam 30 arranged between two intermediate parts 10a, 20a is pin-joined to the first inclined column 10 and the second inclined column 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a skeleton structure of a building having multiple floors. [Background technology]

[0002] For example, as the framework structure of a building with multiple floors, such as an office building or commercial building, a known configuration has a first inclined column that is inclined relative to the vertical direction and a second inclined column that is inclined in the opposite direction to the first inclined column relative to the vertical direction, with beams connected to the first inclined column and the second inclined column on each floor (see, for example, Patent Document 1).

[0003] With such a structural frame, the first inclined column and the second inclined column can function as columns that support vertical loads such as the weight of the building, while also functioning as braces that bear horizontal forces during earthquakes, etc. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-16543 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned conventional framework structure, the connections between the first or second inclined columns and the beams on each floor can become complicated, and there has been a demand for a configuration that simplifies these connections.

[0006] The present invention has been made in view of the above problems, and its object is to provide a building frame structure that can simplify the connection between inclined columns and beams. [Means for solving the problem]

[0007] The skeleton structure of a building of the present invention is a skeleton structure of a building having multiple stories, comprising: a first inclined column extending across multiple stories at an incline with respect to the vertical direction; a second inclined column extending across multiple stories at an incline opposite to the first inclined column with one end joined to one end of the first inclined column; and a plurality of beams joined to the first inclined column and the second inclined column on the corresponding stories, wherein the beams are rigidly joined to the first and second inclined columns at the joints where one end of the first inclined column is joined to one end of the second inclined column, and the beams located between the two intermediate sections are pin-joined to the first and second inclined columns at the intermediate sections between one end and the other of the first inclined column and the second inclined column.

[0008] In the building skeleton structure of the present invention, in the above configuration, it is preferable that the plurality of first inclined columns and the plurality of second inclined columns are arranged in a diagonal lattice pattern.

[0009] In the above-mentioned configuration of the building frame structure of the present invention, it is preferable that the first inclined column and the second inclined column are arranged at the outermost parts of the building, and a vertical column extending in the vertical direction is provided inside the building more than the first inclined column and the second inclined column. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a building skeleton structure that can further simplify the connection between inclined columns and beams. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view showing an outline of a building skeleton structure according to one embodiment of the present invention. [Figure 2] This is a floor plan of the third floor of the building structure shown in Figure 1. [Figure 3] This is an enlarged view of the area A of the building structure shown in Figure 1. [Figure 4]This is an enlarged view of the area B of the building structure shown in Figure 1. [Figure 5] This is an enlarged view of the area C of the building structure shown in Figure 1. [Figure 6] FIG. 3 is a cross-sectional view taken along line DD in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a building skeleton structure 1 according to one embodiment of the present invention will be described in detail with reference to the drawings.

[0013] A building skeleton structure 1 (hereinafter sometimes simply referred to as "skeleton structure 1") according to one embodiment of the present invention shown in Figures 1 and 2 is applied to a building 2 having multiple floors that can be used, for example, as an office building, commercial building, etc. In this embodiment, the building 2 has four floors. Note that a detailed configuration of the building 2 will be omitted.

[0014] The skeleton structure 1 has a first inclined column 10, a second inclined column 20, and a plurality of beams 30.

[0015] The first inclined column 10 and the second inclined column 20 can be made of, but are not limited to, circular steel pipes, square steel pipes, or concrete-filled steel pipes. The beam 30 can be made of, but is not limited to, H-shaped steel.

[0016] In this embodiment, the skeleton structure 1 has a plurality of (8) first inclined columns 10, a plurality of (8) second inclined columns 20, and a plurality of (27) beams 30 in the outermost portion 1A on the front side of the building 2 shown in Fig. 1. The plurality of first inclined columns 10 and the plurality of second inclined columns 20 are arranged in a diagonal lattice pattern in the outermost portion of the building 2 when viewed from the front.

[0017] In addition, like the outermost portion 1A on the front side of the building 2, the skeleton structure 1 also has a plurality of first inclined columns 10, a plurality of second inclined columns 20, and a plurality of beams 30 in the outermost portion 1B on the back side of the building 2 and the outermost portions 1C on both side sides, and these portions 1B and 1C also have a configuration in which the plurality of first inclined columns 10 and the plurality of second inclined columns 20 are arranged in a diagonal lattice pattern. However, since the configurations of these portions 1B and 1C are basically the same as those of the outermost portion 1A on the front side of the building 2, only the configuration of the outermost portion 1A on the front side of the building 2 will be described below.

[0018] The first inclined columns 10 are each inclined relative to the vertical direction and extend across multiple floors. The first inclined columns 10 are all parallel to one another.

[0019] In this embodiment, the eight first inclined columns 10 are each inclined to the right with respect to the vertical direction (the up-down direction on the page) in Fig. 1, and four of the eight first inclined columns 10 extend across two stories, the first and second stories, of the building 2, while the other four first inclined columns 10 extend across two stories, the third and fourth stories, of the building 2. The four first inclined columns 10 extending across the two stories, the first and second stories, of the building 2 and the four first inclined columns 10 extending across the two stories, the third and fourth stories, of the building 2 are arranged in a substantially straight line with corresponding first inclined columns 10.

[0020] The multiple second inclined columns 20 extend across multiple stories, each inclined in the opposite direction to the first inclined columns 10 with respect to the vertical direction. The multiple second inclined columns 20 are all parallel to one another.

[0021] In this embodiment, the eight second inclined columns 20 are each inclined to the left with respect to the vertical direction (the up-down direction on the page) in Fig. 1, and four of the eight second inclined columns 20 extend across two stories, the first and second stories, of the building 2, while the other four second inclined columns 20 extend across two stories, the third and fourth stories, of the building 2. The four second inclined columns 20 extending across the two stories, the first and second stories, of the building 2 and the four second inclined columns 20 extending across the two stories, the third and fourth stories, of the building 2 are arranged in a substantially straight line with corresponding ones of the four second inclined columns 20.

[0022] The upper ends (one ends) of the four second inclined columns 20 extending across the two stories, the first and second stories, of the building 2 are joined at joints 40 to the upper ends (one ends) of the corresponding first inclined columns 10 of the four first inclined columns 10 extending across the two stories, the first and second stories, of the building 2. In addition, the lower ends (one ends) of the four second inclined columns 20 extending across the two stories, the third and fourth stories, of the building 2 are joined at joints 40 to the lower ends (one ends) of the corresponding first inclined columns 10 of the four first inclined columns 10 extending across the two stories, the third and fourth stories, of the building 2.

[0023] The lower ends of the four first inclined columns 10 and the four second inclined columns 20 extending across the two floors, the first and second floors, of the building 2 are each supported by a pedestal 4 provided on the foundation 3 of the building 2. In particular, in Figure 1, the lower ends of the three first inclined columns 10 from the right are each supported by the same pedestal 4 as the lower ends of the corresponding second inclined columns 20 among the three second inclined columns 20 from the left. This joins the lower ends of the first inclined columns 10 and the corresponding second inclined columns 20.

[0024] Of the four first inclined columns 10 extending across the two floors, the third and fourth floors, of building 2, in Figure 1, the upper ends of the three first inclined columns 10 from the left are each joined at joints 50 to the upper ends of the corresponding second inclined columns 20 among the three second inclined columns 20 from the right.

[0025] The beams 30 are joined to the first inclined columns 10 and the second inclined columns 20 on the corresponding stories (stories each made up of a floor slab supported by the beams 30).

[0026] In this embodiment, five beams 30 supporting the floor slab of the third floor of the building 2 are joined at their ends to joints 40, i.e., the first inclined column 10 and the second inclined column 20. More specifically, each beam 30 arranged between a pair of joints 40 has one end joined to one joint 40 and the other end joined to the other joint 40, spanning the pair of joints 40. Furthermore, the beams 30 arranged on the extreme left and right sides in FIG. 1 are joined at their one end to joints 40, i.e., the first inclined column 10 and the second inclined column 20, and are cantilevered by the first inclined column 10 and the second inclined column 20.

[0027] Furthermore, nine beams 30 supporting the floor slab of the second floor of the building 2 and nine beams 30 supporting the floor slab of the fourth floor of the building 2 are joined at their ends to the intermediate portion 10a between one end and the other end of the first inclined column 10 or the intermediate portion 20a between one end and the other end of the second inclined column 20. More specifically, the beams 30 arranged between the first inclined column 10 and the second inclined column 20 have one end joined to the intermediate portion 10a, 20a of either the first inclined column 10 or the second inclined column 20 and the other end joined to the intermediate portion 10a, 20a of the other of the first inclined column 10 or the second inclined column 20, thereby bridging between the first inclined column 10 and the second inclined column 20. In addition, the beams 30 located on the left and right sides in Figure 1 are each joined at one end to the middle parts 10a, 20a of either the first inclined column 10 or the second inclined column 20, and are cantilevered by the first inclined column 10 and the second inclined column 20.

[0028] The four beams 30 supporting the rooftop of the building 2 are each joined at their ends to a joint 50, i.e., to the first inclined column 10 and the second inclined column 20. More specifically, the beam 30 arranged between a pair of joints 50 has one end joined to one of the joints 50 and the other end joined to the other joint 50, spanning the pair of joints 50. The beams 30 arranged on the extreme left and right sides in FIG. 1 are each joined at their one end to a joint 50, i.e., to the first inclined column 10 and the second inclined column 20, and their other ends are joined to joints 60 to which the upper ends of the first inclined column 10 to the second inclined column 20 arranged on the extreme left and right sides in FIG. 1 are joined.

[0029] In the building skeleton structure 1 according to this embodiment, as described above, the first inclined column 10 and the second inclined column 20 are inclined in opposite directions relative to the vertical direction, so that the first inclined column 10 and the second inclined column 20 can function as columns that support vertical loads such as the weight of the building 2, while also functioning as braces that bear horizontal forces during earthquakes, etc. This makes it possible to increase the earthquake resistance of the building 2 with a simpler configuration than when columns are configured to extend vertically and braces are provided between the columns and beams.

[0030] In the building skeleton structure 1 according to this embodiment, at the joints 40 and 50 where one end of the first inclined column 10 and one end of the second inclined column 20 are joined, the beam 30 is rigidly joined to the first inclined column 10 and the second inclined column 20, and the beam 30 cantilevered from one of the intermediate parts 10a, 20a is rigidly joined to one of the intermediate parts 10a, 20a supporting the beam 30. In addition, in the building skeleton structure 1 according to this embodiment, at the intermediate part 10a between one end and the other of the first inclined column 10 and the intermediate part 20a between one end and the other of the second inclined column 20, the beam 30 located between the two intermediate parts 10a, 10b is pin-joined to the first inclined column 10 and the second inclined column 20.

[0031] As shown in Figure 3, at a joint 40 where one end of the first inclined column 10 and one end of the second inclined column 20 are joined, a pair of beams 30 are rigidly joined to the joint 40, i.e., the first inclined column 10 and the second inclined column 20.

[0032] More specifically, at the joint 40, one end of the first inclined pillar 10 and one end of the second inclined pillar 20 are joined using a joint member 41. The joint member 41 has a joint main body 42, a pair of upper and lower first pillar connectors 43 that are fixed to the upper and lower surfaces of the joint main body 42 and form part of the first inclined pillar 10, a pair of upper and lower second pillar connectors 44 that are fixed to the upper and lower surfaces of the joint main body 42 and form part of the second inclined pillar 20, and a pair of left and right beam connectors 45 that are fixed to both side parts (the left and right sides in Figure 3) of the joint main body 42 and form part of the beam 30.

[0033] The beam 30, formed of an H-shaped steel, includes a web 30a, an upper flange 30b fixed to the upper end of the web 30a, and a lower flange 30c fixed to the lower end of the web 30a. Similarly, a pair of left and right beam connection portions 45 each include a web 45a, an upper flange 45b fixed to the upper end of the web 45a, and a lower flange 45c fixed to the lower end of the web 45a. The web 30a of the beam 30 is joined to the web 45a of the corresponding beam connection portion 45, the upper flange 30b of the beam 30 is joined to the upper flange 45b of the corresponding beam connection portion 45, and the lower flange 30c of the beam 30 is joined to the lower flange 45c of the corresponding beam connection portion 45. As a joining structure between the beam 30 and the beam connection portion 45, for example, a configuration can be used in which a steel plate 46 spanning the beam 30 and the beam connection portion 45 is fixed to each of the beam 30 and the beam connection portion 45 with fasteners 47 consisting of bolts and nuts.

[0034] Similarly, as shown in Figure 4, at a joint 50 where one end of the first inclined column 10 and one end of the second inclined column 20 are joined, a pair of beams 30 are rigidly joined to the joint 50, i.e., the first inclined column 10 and the second inclined column 20.

[0035] More specifically, at the joint 50, one end of the first inclined pillar 10 and one end of the second inclined pillar 20 are joined using a joint member 51. The joint member 51 has a joint main body 52, a first-pillar connection member 53 that is fixed to the underside of the joint main body 52 and forms part of the first inclined pillar 10, a second-pillar connection member 54 that is fixed to the underside of the joint main body 42 and forms part of the second inclined pillar 20, and a pair of left and right beam connection members 55 that are fixed to both side portions (the left and right sides in Figure 4) of the joint main body 52 and form part of the beam 30.

[0036] Each of the pair of left and right beam connection portions 55 includes a web 55a, an upper flange 55b fixed to the upper end of the web 55a, and a lower flange 55c fixed to the lower end of the web 55a. The web 30a of the beam 30 is joined to the web 55a of the corresponding beam connection portion 55, the upper flange 30b of the beam 30 is joined to the upper flange 55b of the corresponding beam connection portion 55, and the lower flange 30c of the beam 30 is joined to the lower flange 55c of the corresponding beam connection portion 55. As the joining structure between the beam 30 and the beam connection portions 55, for example, a configuration can be used in which a steel plate 56 spanning the beam 30 and the beam connection portions 55 is fixed to each of the beam 30 and the beam connection portions 55 with fastening members 57 consisting of bolts and nuts.

[0037] In contrast, as shown in Figure 5, a pair of beams 30 are arranged between two intermediate portions 10a, 20a, with one end joined to the intermediate portion 10a and the other end joined to the intermediate portion 20a, and are joined to the intermediate portion 20a of the second inclined column 20 by pin joints at the intermediate portion 20a between one end and the other end of the second inclined column 20.

[0038] More specifically, a joint member 71 is provided in the middle section 20a of the second inclined column 20. The joint member 71 has a joint main body 72, a pair of upper and lower column connectors 73 that are fixed to the top and bottom surfaces of the joint main body 72 and form part of the second inclined column 20, and a pair of left and right beam connectors 74 that are fixed to both side sections (the left and right sides in Figure 3) of the joint main body 72 and form part of the beam 30.

[0039] Each of the pair of left and right beam connection portions 74 includes a web 74a, an upper flange 74b fixed to the upper end of the web 74a, and a lower flange 74c fixed to the lower end of the web 74a. The web 30a of the beam 30 is joined to the web 74a of the corresponding beam connection portion 74. As a joining structure between the web 30a of the beam 30 and the web 74a of the beam connection portion 74, for example, a configuration can be used in which a steel plate 75 spanning the beam 30 and the beam connection portion 74 is fixed to each of the beam 30 and the beam connection portion 74 with fasteners 76 consisting of bolts and nuts.

[0040] On the other hand, the upper flange 30b of the beam 30 is not joined to the upper flange 74b of the corresponding beam connection part 74, and the lower flange 30c of the beam 30 is not joined to the lower flange 74c of the corresponding beam connection part 74. As a result, at the intermediate part 20a between one end and the other end of the second inclined column 20, the pair of beams 30 are joined to the second inclined column 20 by pin joints.

[0041] Although not shown in detail, a pair of beams 30, each of which is disposed between the two intermediate portions 10a, 20a and has one end joined to the intermediate portion 10a and the other end joined to the intermediate portion 20a, is joined to the intermediate portion 10a of the first inclined column 10 by a pin joint in the intermediate portion 10a between one end and the other end of the first inclined column 10, just as in the intermediate portion 20a between one end and the other end of the second inclined column 20.

[0042] As shown in Figure 1, the first inclined column 10 and the second inclined column 20 are inclined in opposite directions to each other, so the span of a beam 30 having one end pin-joined to the intermediate portion 10a of the first inclined column 10 and the other end pin-joined to the intermediate portion 20a of the second inclined column 20 is shorter than the span of a beam 30 having one end rigidly joined to a joint 40 or 50 and the other end rigidly joined to a joint 40 or 50. Therefore, even if the beam 30 is pin-joined to the intermediate portion 10a of the first inclined column 10 and the intermediate portion 20a of the second inclined column 20, the strength of the beam 30 against load can be ensured.

[0043] As described above, the building skeleton structure 1 according to this embodiment comprises a first inclined column 10 that is inclined with respect to the vertical direction and extends across multiple stories, a second inclined column 20 that is inclined in the opposite direction to the first inclined column 10 with respect to the vertical direction and extends across multiple stories, with one end joined to one end of the first inclined column 10, and a plurality of beams 30 that are joined to the first inclined column 10 and the second inclined column 20 on the corresponding stories, and at joints 40 and 50 where one end of the first inclined column 10 and one end of the second inclined column 20 are joined, the beams 30 are rigidly joined to the first inclined column 10 and the second inclined column 20. Even in the case of a beam 30 cantilevered from one of the intermediate sections 10a, 20a, the beam 30 is rigidly connected to the first inclined column 10 or the second inclined column 20, and in the intermediate section 10a between one end and the other of the first inclined column 10 and the intermediate section 20a between one end and the other of the second inclined column 20, the beam 30 arranged between the two intermediate sections 10a, 20a is pin-connected to the first inclined column 10 and the second inclined column 20. Therefore, the connection between the first inclined column 10 and the second inclined column 20 and the beam 30 in the skeleton structure 1 can be simplified compared to the case where all the beams 30 are rigidly connected to the first inclined column 10 and the second inclined column 20. Therefore, the construction cost of the building 2 having this skeleton structure 1 can be reduced.

[0044] Furthermore, in the building skeleton structure 1 of this embodiment, the multiple first inclined columns 10 and the multiple second inclined columns 20 are arranged in a diagonal grid pattern, thereby increasing the strength of the skeleton structure 1 against vertical loads while also increasing its strength against horizontal forces.

[0045] As shown in Figure 6, it is preferable that the main structure 1 is configured such that the first inclined column 10 and the second inclined column 20 are arranged at the outermost sides of the building 2, and a vertical column 80 extending in the vertical direction is provided closer to the interior of the building 2 than the first inclined column 10 and the second inclined column 20.

[0046] In this embodiment, four vertical columns 80 are provided inside the building 2 between the outermost portion 1A on the front side and the outermost portion 1B on the rear side of the building 2 of the skeleton structure 1, and are spaced apart in a direction along the outermost portion 1A. Of these four vertical columns 80, the two vertical columns 80 located on the inside in the left-right direction in FIG. 6 are connected by beams 81 to joints 40 and 50, respectively. In addition, beams 82 are provided between adjacent vertical columns 80, corresponding to the beams 30 on each floor.

[0047] As described above, in the building skeleton structure 1 according to this embodiment, the vertical columns 80 extending in the vertical direction are provided closer to the interior of the building 2 than the first inclined columns 10 and the second inclined columns 20, so that part of the vertical load of the building 2 is effectively supported by the vertical columns 80, thereby reducing the vertical load borne by the first inclined columns 10 and the second inclined columns 20. This makes it possible to further increase the strength of the skeleton structure 1 against vertical loads and also increase its strength against horizontal forces.

[0048] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0049] For example, in the above embodiment, the first inclined column 10 and the second inclined column 20 are configured to extend across two stories of the building 2, but this is not limiting and they may be configured to extend across three or more stories of the building 2. In this case, between the joints 40 and 50 or between the joints 40 and the base 4, multiple beams 30 corresponding to each story may be joined to the middle parts of the first inclined column 10 and the second inclined column 20 with gaps between them in the vertical direction.

[0050] Furthermore, in the above embodiment, the skeleton structure 1 is configured to have a plurality of first inclined columns 10 and a plurality of second inclined columns 20, but this is not limited to this and it is sufficient to have at least one first inclined column 10 and one second inclined column 20, and the number of first inclined columns 10, second inclined columns 20 and beams 30 that make up the skeleton structure 1 can be changed as appropriate depending on the number of floors, size, etc. of the building 2.

[0051] Furthermore, the configuration of the joint members 41, 51 at the joints 40, 50 joining one end of the first inclined column 10 and one end of the second inclined column 20 is not limited to the above, and the configuration can be changed in various ways as long as the beam 30 can be rigidly joined to the first inclined column 10 and the second inclined column 20.

[0052] Furthermore, the configuration of the joint member 71 that joins the middle part 10a of the first inclined column 10 to the beam 30 is not limited to the above, and the configuration can be modified in various ways as long as the beam 30 can be pin-joined to the first inclined column 10 and the second inclined column 20. [Explanation of symbols]

[0053] 1 Framework structure 1A part 1B part 1C part 2. Building 3 Basic part 4 Base 10 First Inclined Pillar 10a Middle 20 Second Inclined Pillar 20a Middle 30 Beam 30a Web 30b Upper flange 30c bottom flange 40 Joint 41 Joint members 42 Connection body 43 First Pillar Connection 44 Second Pillar Connection 45 Beam connection 45a Web 45b Upper flange 45c bottom flange 46 Plates 47 Fasteners 50 Joint 51 Joint members 52 Connection body 53 First Pillar Connection 54 Second Pillar Connection 55 Beam connection 55a Web 55b Upper flange 55c bottom flange 56 Plate 57 Fasteners 60 Joint 71 Joints 72 Connection body 73 Pillar connection 74 Beam connection 74a Web 74b Upper flange 74c Lower flange 75 plates 76 Fasteners 80 Vertical Pillar 81 Beam 82 Beam

Claims

1. A skeleton structure of a building having multiple floors, a first inclined column extending across the plurality of stories at an angle relative to the vertical direction; a second inclined column that extends across the plurality of stories and is inclined in a direction opposite to the first inclined column with respect to the vertical direction, and one end of the second inclined column is joined to one end of the first inclined column; a plurality of beams joined to the first inclined columns and the second inclined columns in the corresponding stories, At a joint where one end of the first inclined pillar and one end of the second inclined pillar are joined, the beam is rigidly joined to the first inclined pillar and the second inclined pillar; A building skeleton structure characterized in that, in the intermediate section between one end and the other end of the first inclined column and the intermediate section between one end and the other end of the second inclined column, the beam arranged between the two intermediate sections is pin-connected to the first inclined column and the second inclined column.

2. 2. The building skeleton structure according to claim 1, wherein a plurality of the first inclined columns and a plurality of the second inclined columns are arranged in a diagonal lattice pattern.

3. the first inclined column and the second inclined column are disposed on the outermost sides of the building; 3. The building skeleton structure according to claim 1, further comprising a vertical column extending vertically inside the building than the first inclined column and the second inclined column.

Images