JP6984286B2 - Structure - Google Patents

Description

The present invention relates to a structure having a truss structure used for a roof or the like.

A truss structure may be used for the roof of a large-span building (see, for example, Patent Document 1). In the roof structure of this document, one side of the upper chord material and the lower chord material is positioned in parallel and horizontally among the upper chord material and the lower chord material whose two sides are orthogonal to each other. Then, the diagonal member and the bundle member that join the upper chord material and the lower chord material are joined to the lower chord material at an arbitrary angle with respect to the vertical line.

Japanese Unexamined Patent Publication No. 2003-96905

However, with a single truss structure, the degree of freedom in structural design may not be ensured. For example, when the roof is constructed with a truss structure, the ceiling position is determined by the truss structure unless the ceiling is constructed separately from the truss structure, and the degree of freedom in designing the internal space cannot be secured.

In the structure for solving the above problems, the truss element members including the first upper chord member and the first lower chord member are connected side by side in the second direction intersecting the first direction on the vertical structure extending in the first direction. A structure including a first truss structure and a second truss structure in which bundles and diagonal members are arranged in a polygonal pillar shape or a polygonal cone shape, the first truss structure and the second truss structure. The truss structures were connected by a connection consisting of vertical planes extending in the first direction.

According to the present invention, the degree of freedom in structural design can be increased by combining different truss structures.

The perspective view of the structure in an embodiment. A side view of the structure in the embodiment. It is a view seen from the front of the structure in an embodiment, (a) is a front view, (b) is a front sectional view. It is a plan view of the structure in an embodiment, (a) is a top view, (b) is a plan view explaining columns and beams with a roof removed. An enlarged plan view of a main part of the structure in the embodiment. It is explanatory drawing explaining the 1st truss structure in embodiment, (a) is the arrangement drawing of the truss element member, (b) is the front view of the truss element member. It is explanatory drawing explaining the 2nd truss structure in embodiment, (a) is the side sectional view, (b) is the enlarged perspective view of the main part. It is a figure explaining the connection part in an embodiment, (a) is the perspective view which cut the main part, (b) is the perspective view of the main part.

Hereinafter, an embodiment in which the structure is embodied will be described with reference to FIGS. 1 to 8.
FIG. 1 is a perspective view of a building 10 having a roof 20 as a structure. FIG. 2 is a side view of the roof 20. The building 10 of the present embodiment is used as a facility for holding lectures, plays, and the like, and has a stage space at both ends and a large space for spectators' seats in the center.

As shown in FIG. 1, the building 10 of the present embodiment includes a pillar-beam frame 11 and a roof 20 arranged on the pillar-beam frame 11. The column-beam frame 11 includes columns 15 and 16 whose upper ends are connected to the roof 20 and beams connecting the columns 15 and 16 to each other.

The truss structure constituting the roof 20 includes a large ridge 21 at the top. In this embodiment, the large building 21 extends in the X direction.
As shown in FIG. 2, the roof 20 has a shape in which two surfaces extend downward from the main building 21 in the Y direction (direction orthogonal to the X direction) and in the direction opposite to the Y direction.

3A is a front view of the building 10, and FIG. 3B is a front sectional view of the roof 20 cut at the center of the building 10 including the main building 21.
As shown in FIG. 3, the large ridge 21 of the roof 20 has an arc shape with both sides jumping up with the center as the lowermost part. The roof 20 is composed of a first truss structure 30, a second truss structure 40, and a connecting portion 50. The second truss structure 40 is a truss having a structure different from that of the first truss structure 30, and the connecting portion 50 connects the first truss structure 30 and the second truss structure 40.

FIG. 4A is a top view of the building 10, and FIG. 4B is a plan view of the building 10 excluding the roof 20. FIG. 5 is an enlarged plan view of a part of the roof 20.
As shown in FIG. 4A, the roof 20 is axisymmetric in the X and Y directions. A first truss structure 30 is arranged in the central portion of the roof 20. The first truss structure 30 has a substantially rectangular planar shape. The second truss structure 40 is arranged on both sides of the first truss structure 30 in the X direction. This second truss structure has a substantially semicircular planar shape. The eaves 25 are formed on the outer peripheral portions of the first truss structure 30 and the second truss structure 40.

FIG. 4B shows a column-beam frame 11 in which the roof 20 is removed from the building 10. In this figure, black circles indicate pillars. The upper ends of the pillars 15 to 19 are connected to the roof 20. The pillar 15 is connected to the roof 20 only at its upper end. The end of the lower chord member constituting the roof 20 is fixed to the pillar 16, and the pillar 16 functions as a bundle member of the truss structure of the roof 20. In the roof 20, the portion outside the pillars 16 and 19 is the eave 25. The columns 17 to 19 are provided in the connecting portion 50 connecting the first truss structure 30 and the second truss structure 40.

Next, the details of each truss structure (30, 40) constituting the roof 20 and the connecting portion 50 will be described.
<1st truss structure>
First, the first truss structure 30 will be described with reference to FIGS. 3, 5, and 6.
FIG. 6A is a schematic diagram illustrating the first truss structure 30. The first truss structure 30 is configured by arranging a plurality of truss element members 31 in the X direction (second direction intersecting the first direction at 90 degrees) and connecting them by members extending in the X direction. The truss element member 31 includes a first upper chord member 36 and a first lower chord member 37 in a vertical structure surface P1 extending in the Y direction (first direction).

Specifically, as shown in FIGS. 5 and 6A, a plurality of the same truss element members 31 are arranged side by side at equal intervals in the X direction. The apex portions of the truss element members 31 are connected by a large ridge 21. The first upper chord members 36 of the truss element member 31 are connected to each other by the connecting upper chord members 32. The first lower chord members 37 of the truss element members 31 are connected to each other by the connecting lower chord members 33.

As shown in FIG. 3B, the connecting upper chord member 32 and the connecting lower chord member 33 have the same shape as the shape of the main building 21. Therefore, the first truss structure 30 is composed of a parallel chord truss structure in which the large ridge 21 extending in the X direction, the connecting upper chord member 32, and the connecting lower chord member 33 have the same shape. A part of the large building 21 functions as a connecting upper chord material.

Further, as shown in FIG. 5, in the first truss structure 30 of the present embodiment, the connecting upper chord members 32 to each other, the connecting lower chord members 33 to each other, and the diagonal connecting the connecting upper chord members 32 and the connecting lower chord members 33 are partially connected. The material 34 is provided.

FIG. 6B is an explanatory view (front view) of the truss element member 31. The truss element member 31 has a shape symmetrical with respect to the vertical plane including the X direction, and has a substantially chevron shape on the upper side and a substantially M shape on the lower side. The truss element member 31 includes a first upper chord member 36, a first lower chord member 37, a bundle member 35, and a diagonal member 38.

Specifically, the first upper chord member 36 of the truss element member 31 is formed in an arc shape having a apex at the center and decreasing from this apex toward the outside (Y direction and opposite direction).
The first lower chord member 37 includes an outer end portion 37a, an intermediate portion 37b, and a central portion 37c. The outer end portion 37a and the central portion 37c extend in the substantially horizontal direction (Y direction). In the present embodiment, the tip of the outer end portion 37a of the first lower chord member 37 is connected to the pillar 16. The central portion 37c is arranged at a position higher than the outer end portion 37a. The intermediate portion 37b has a chevron shape, and connects the outer end portion 37a at a low position and the central portion 37c at a high position.

The bundle member 35 connects the first upper chord member 36 and the first lower chord member 37 in the vertical direction. In the present embodiment, the bundle member 35 is provided at the connection position of the outer end portion 37a, the intermediate portion 37b, and the central portion 37c of the first lower chord member 37, and at a position in between thereof.

Further, the diagonal member 38 is arranged so as to connect the node of the bundle member 35 and the first lower chord member 37 to the node of the bundle member 35 adjacent to the bundle member 35 and the first upper chord member 36. ing.
The connecting upper chord member 32, the connecting lower chord member 33, the first upper chord member 36, and the first lower chord member 37 of the first truss structure 30 are made of H-shaped steel, and the diagonal members 34, 38 and the bundle member 35 are made of circular pipes. Configure.
Further, the ceiling material is directly attached to the first lower chord member 37 and the connecting lower chord member 33 of the first truss structure 30. In this embodiment, an aluminum panel is used as the ceiling material.

<Second truss structure>
Next, the second truss structure 40 will be described with reference to FIGS. 5 and 7.
7 (a) is a side view of the second truss structure 40, and FIG. 7 (b) is an enlarged perspective view of a part of the second truss structure 40. The second truss structure 40 includes a second upper chord member 41, 42, 43, a second lower chord member 46, 47, 48, a bundle member 44, and a diagonal member 45.

As shown in FIGS. 5 and 7 (b), the second upper chord member 41 of the second truss structure 40 functions as a reference chord member and is arranged so as to extend in the Y direction. The second upper chord members 42 and 43 function as cross-string members, extend in a direction of intersecting the second upper chord member 41 at about 60 degrees, and intersect at the same node (intersection).

As shown in FIGS. 7 (a) and 7 (b), the bundle member 44 is fixed to the lower surface of the nodes of the second upper chord members 41 to 43. The bundle member 44 is arranged so as to extend in a direction substantially perpendicular to the surface formed by the second upper chord members 41 to 43 at the nodes with the second upper chord members 41 to 43.

As shown in FIGS. 5 and 7 (b), the second lower chord member 46 functions as a reference chord member and is arranged so as to extend in the Y direction. The second lower chord members 47 and 48 function as cross-string members, extend in a direction of intersecting the second lower chord member 46 at about 60 degrees, and intersect at the same node. Further, the bundle member 44 is fixed to the upper surface of the node of each of the second lower chord members 46 to 48. Therefore, the second lower chord members 46 to 48 are arranged so as to correspond to the second upper chord members 41 to 43.

Further, the diagonal member 45 extends from the lower end portion of the bundle member 44 (nodes of the second lower chord members 46 to 48) to the upper end portion of the adjacent bundle member 44 (nodes of the second upper chord members 41 to 43). Is placed in. Therefore, in the second truss structure 40, the bundle member 44 and the diagonal member 45 are arranged so as to form a side connected to the same apex in the triangular pyramid.

<Connection part>
Next, the connection portion 50 existing between the first truss structure 30 and the second truss structure 40 will be described with reference to FIG. FIG. 8A is a perspective view in a state where the second truss structure 40 is cut while leaving a part thereof. FIG. 8B is an enlarged perspective view of the connection portion 50. The connecting portion 50 is symmetrical with respect to the vertical plane including the X direction, and has the same overall shape as the truss element member 31.

As shown in FIG. 8, the connecting portion 50 of the present embodiment includes an upper chord member 56, a lower chord member 57, a bundle member, and a diagonal member 59 in a vertical structure in the Y direction. The upper chord member 56 has substantially the same mountain shape as the first upper chord member 36 of the truss element member 31 of the first truss structure 30. The lower chord member 57 has the same substantially M shape as the first lower chord member 37 of the truss element member 31. The connecting portion 50 is composed of a flat truss structure having the same height as the first truss structure 30. Further, the ends of the connecting upper chord member 32 and the connecting lower chord member 33 of the first truss structure 30 are connected to the upper chord member 56 and the lower chord member 57.

The bundle member of the connecting portion 50 connects the upper chord member 56 and the lower chord member 57 in the vertical direction. These bundles are arranged at positions corresponding to the bundles 35 of the truss element member 31. In the present embodiment, the bundle material of the connecting portion 50 is composed of the upper portions of the vertical materials 51, 52a, 52b, 53 and the columns 17, 18 and 19. The columns 17 to 19 and the adjacent columns 15 and 16 are connected by a beam.
The connecting upper chord member 32 of the first truss structure 30 is connected to the node between the upper end portion of each bundle member and the upper chord member 56. The vertical materials 51, 52a, 52b, and 53 are composed of circular pipes.

The vertical material 51 is arranged directly under the main building 21. The lower end of the vertical member 51 is connected to the lower chord member 57 and the connecting lower chord member 33 of the first truss structure 30. Further, the second lower chord member 46 of the second truss structure 40 is connected in the middle of the vertical member 51.

The bundle material of the connecting portion 50 is the vertical material 52a, 53, 52b, 53, the pillar 17, and the vertical material 53 from the vertical material 51 connected to the main building 21 toward the inclination direction of the upper chord material 56 of the connecting portion 50. , Pillars 18, 19 are arranged in this order.
The second upper chord members 41 to 43 of the second truss structure 40 are connected to the upper ends of the vertical members 52a and 52b. Further, the second lower chord members 46 to 48 of the second truss structure 40 are connected in the middle (intermediate height) of the vertical members 52a and 52b. The intermediate height does not mean the height in the middle of the vertical material, but the height in the middle other than the upper end portion and the lower end portion. Further, the vertical materials 52a and 52b are made of a material having a higher strength than the vertical material 53. Specifically, the vertical material 52a is composed of a circular pipe thicker than the vertical material 53, and the vertical material 52b is composed of an H-shaped steel larger than the vertical material 53.

The vertical member 53 is connected to the upper chord member 56, the lower chord member 57, and the diagonal member 59 of the connecting portion 50. On the other hand, the vertical member 53 is not connected to the second upper chord members 41 to 43 and the second lower chord members 46 to 48 of the second truss structure 40.

Therefore, as shown in FIGS. 8A and 8B, the second upper chord member 41 of the second truss structure 40 is connected to the connection portion 50 only at the node with the second upper chord members 42, 43. Will be done. Further, the second lower chord member 46 of the second truss structure 40 is connected to the connecting portion 50 only at the node with the second lower chord member 47, 48.

As shown in FIG. 8A, the second upper chord members 41 to 43 are connected to the upper end of the pillar 17. The second lower chord members 46 to 48 are connected to the pillar 17 at a position higher than the connection position between the lower chord member 57 of the connecting portion 50 and the connecting lower chord member 33 of the first truss structure 30.
The second upper chord members 41 to 43 are connected to the upper end of the pillar 18. The second lower chord members 46 to 48 are connected to the pillar 18 at substantially the same height as the connection position between the lower chord member 57 of the connecting portion 50 and the connecting lower chord member 33.
The upper chord member 56 and the end portion of the lower chord member 57 of the connecting portion 50 are fixed to the pillar 19.

According to this embodiment, the following effects can be obtained.
(1) The roof 20 of the present embodiment includes a first truss structure 30, a second truss structure 40, and a connecting portion 50. The first truss structure 30 is configured by connecting a plurality of truss element members 31 on the vertical structure surface P1 side by side. Thereby, the first truss structure 30 having a thickness different from that of the second truss structure 40 can be connected to the second truss structure 40 via the connecting portion 50. Therefore, it is possible to increase the degree of freedom in designing a structure using a truss structure in one building 10.
The ceiling material is directly fixed to the first lower chord member 37 and the connecting lower chord member 33 of the first truss structure 30. In this case, the first truss structure 30 determines the ceiling height to the ceiling material. Therefore, in the roof 20 of the building 10, it is possible to design a design suitable for each area not only for the exterior but also for the internal space by the truss structure used for each area.

(2) The second lower chord members 46 to 48 of the second truss structure 40 are connected to the connecting portion 50 of the present embodiment in the middle of the vertical members 52a and 52b. As a result, even in a structure in which the positions of the second lower chord members 46 to 48 of the second truss structure 40 do not match the height of the first lower chord member 37 of the first truss structure 30, the first truss is passed through the connecting portion 50. The structure 30 and the second truss structure 40 can be connected.

(3) The vertical material 52b of the connecting portion 50 of the present embodiment is made of a material having higher strength than the vertical material 53 to which the second lower chord materials 46 to 48 of the second truss structure 40 are not connected in the middle. There is. As a result, even if the second lower chord members 46 to 48 of the second truss structure 40 are connected in the middle of the vertical member 52b, sufficient strength can be obtained.

(4) The second lower chord member 46 of the second truss structure 40 of the present embodiment is connected to the connecting portion 50 only at the node with the second lower chord member 47, 48. As a result, since there is no portion where only the second lower chord member 46 of the second truss structure 40 is connected in the middle of the bundled material of the connecting portion 50, it is possible to avoid applying a large force to the bundled material of the connecting portion 50 from the side. can do.

(5) The truss element member 31 of the first truss structure 30 of the present embodiment has a parallel chord truss structure having the same shape as the main building 21, the connecting upper chord member 32, and the connecting lower chord member 33. Thereby, each truss element member 31 can be connected with a simple structure.

(6) In the present embodiment, a ceiling material is provided on the first lower chord member 37 and the connecting lower chord member 33 of the first truss structure 30. As a result, the ceiling can be directly attached to the skeleton of the building 10, so that unlike a suspended ceiling, a hanging material such as a hanging bolt can be eliminated and earthquake resistance can be improved.

Moreover, the above-mentioned embodiment may be changed as follows.
In the above embodiment, in the first truss structure 30, a plurality of truss element members 31 included in the vertical structure surface P1 in the Y direction are arranged side by side in the X direction orthogonal to the Y direction and connected. The direction of connecting the truss element members 31 is not limited to the direction orthogonal to each other (intersects at 90 degrees), and may be, for example, the direction of intersecting the vertical structure surface P1 at 60 degrees.

-In the above embodiment, in the first truss structure 30, the same truss element members 31 are arranged side by side in the X direction and connected. The truss element members connected side by side in the second direction (X direction) do not have to have the same shape, and have different shapes as long as the vertical structure intersecting the second direction includes the upper chord member and the lower chord member. A truss element member may be used.

-In the above embodiment, the bundle member 44 and the diagonal member 45 of the second truss structure 40 are arranged so as to form the sides of the triangular pyramid shape. The configuration of the second truss structure 40 is not limited to this configuration. For example, in the case of a structure having no truss element member including the first upper chord member and the first lower chord member on the vertical structure (structure different from the first truss), the bundle member and the diagonal member are other polygonal columns or pyramids. A structure arranged in a shape may be used.

In the above embodiment, the connecting portion 50 has the same overall shape as the truss element member 31 of the first truss structure 30. The overall shape of the connecting portion 50 is not limited to the same shape as the truss element member 31. For example, if the first truss structure can be connected at the positions of the upper chord member and the lower chord member of the connecting portion without connecting in the middle of the bundle material of the connecting portion, the shape of the connecting portion 50 is different from that of the truss element member 31. It may be configured.

In the above embodiment, the connecting portion 50 includes an upper chord member 56, a lower chord member 57, a bundle member, and a diagonal member 59 in a vertical plane parallel to the vertical structure surface P1 of the first truss structure 30. The connection portion 50 is not limited to this configuration, and may have a configuration in which at least a part of the members is included in the vertical plane in the same extending direction as the vertical structure plane.

-In the above embodiment, the second lower chord members 46 to 48 of the second truss structure 40 are connected in the middle of the vertical members 52a and 52b of the connecting portion 50. The chord material of the second truss structure 40 attached to the intermediate height (intermediate portion) of the bundle material of the connecting portion 50 is not limited to the second lower chord material 46 to 48. For example, instead of the second lower chord members 46 to 48, the second upper chord members 41 to 43 may be attached to the intermediate height of the bundle member of the connecting portion.

In the roof 20 of the above embodiment, the second truss structure 40 is arranged on both sides of the first truss structure 30. The arrangement of the truss structure is not limited to this as long as it is a structure in which the first truss structure 30 and the second truss structure 40 are connected by a connecting portion. For example, it may be a structure having a second truss structure on one side of the first truss structure, or a structure in which the entire outer periphery of the first truss structure is surrounded by the second truss structure.

-In the above embodiment, an example in which the structure is applied to the roof 20 has been described. The structure is not limited to the roof, and may be applied to a structure composed of a truss structure such as a column-beam structure or a bridge.

P1 ... Vertical structure, 10 ... Building, 11 ... Truss and beam frame, 15, 16 ... Truss, 17, 18, 19 ... Pillar as a bundle of connecting parts, 20 ... Roof, 21 ... Large ridge, 25 ... Eaves, 30 ... 1st truss structure, 31 ... truss element member, 32 ... connecting upper chord material, 33 ... connecting lower chord material, 34, 38 ... diagonal material, 35 ... bundle material, 36 ... first upper chord material, 37 ... first lower chord material , 37a ... outer end, 37b ... middle, 37c ... central, 40 ... second truss structure, 41 ... second upper chord as reference chord, 42, 43 ... second upper chord as cross chord, 44 ... 2nd truss structure bundle, 45 ... 2nd truss structure diagonal, 46 ... 2nd lower chord as reference chord, 47, 48 ... 2nd lower chord as cross chord, 50 ... Connection , 51, 52a, 52b ... Vertical material as a bundle of connecting parts, 53 ... Vertical material, 56 ... Upper chord material, 57 ... Lower chord material, 59 ... Oblique material.

Claims (4)

A first truss structure in which truss element members including a first upper chord member and a first lower chord member are arranged side by side in a second direction intersecting the first direction on a vertical structure extending in the first direction.
A second truss structure composed of a second upper chord member, a second lower chord member arranged so as to correspond to the second upper chord member, a bundle member, and a diagonal member arranged in a polygonal prism shape or a polygonal pyramid shape . It is a structure equipped with
Said first truss structures and said second truss structure, connected by the connecting portion composed of a vertical plane extending in the first direction,
The connection portion is composed of a flat truss structure having the height of the first truss structure.
A structure characterized in that the end portion of the second upper chord member or the end portion of the second lower chord member is connected at an intermediate height of the bundle member of the connection portion. The second upper chord material or the second lower chord material of the second truss structure includes a reference chord material included in the vertical plane extending in the second direction and a cross chord material intersecting with the connection portion. ,
In nodes of the intersecting chord bundles material of the connection part structure according to claim 1, characterized in that the concatenation of the reference chord. The first truss structure
The first or second claim is characterized in that it is included in the vertical structure extending in the second direction and is configured by a parallel chord truss structure including a connecting upper chord member and a connecting lower chord member connecting the truss element members. The structure described. The structure according to any one of claims 1 to 3 , wherein the ceiling material is fixed to the first lower chord material and the connecting lower chord material of the first truss structure.

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