JPH1046738A - Roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a free shape by deciding two poles with every area by dividing an installation expected space of a roof into plural areas, and connecting them to each other by connecting materials by arranging chord members by deciding plural center lines in the longitudinal direction and the latitudinal direction from these poles. SOLUTION: Plural center lines 11 to regulate a curved surface of an A part are decided at prescribed intervals in the longitudinal direction using an A point as a pole, and plural center lines 12 are decided at prescribed intervals in the latitudinal direction so as to cross the plural center lines 11. Plural center lines 21 to regulate a curved surface of a B part are dicided at prescribed intervals in the longitudinal direction using a B point as a pole, and are connected to the center lines 12 of a boundary part with an A part, and plural center lines 22 are decoded at prescribed intervals so as to cross the center lines 21. Next, an intersection between the center lines 11 and 12 and an intersection between the center lines 21 and 22 are set as dividing points, and mutual upper chord member and lower chord member are connected to each other at adjacent dividing points by connecting materials. Therefore, a roof frame structure of a continuous curved surface shape can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a roof structure formed by a three-dimensional frame structure.

[0002]

2. Description of the Related Art In a conventional three-dimensional frame structure, a plurality of beam members are manufactured to have an equal length as much as possible, and these beam members are three-dimensionally connected to form a three-dimensional truss such as a flat or spherical dome. Examples of the construction include a three-dimensional framed roof in the festival square of EXPO '70, and a curved three-dimensional body formed by discontinuously joining a plurality of curved surfaces in Portopia '81 International Plaza. There is a framed roof.

[0003]

As described above, in the three-dimensional frame structure, in order to simplify the production of the beam material and shorten the construction period,
It is required that the length of the plurality of beams be made as uniform as possible, and therefore the overall shape must be as simple as a flat shape or a dome shape. However, as in Portopia '81 International Plaza, there is a limit to joining a plurality of curved surfaces discontinuously, and there is a problem in that the design requirements cannot be sufficiently satisfied.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to form a continuous curved surface formed by connecting one or a plurality of different curved surfaces into a plurality of beams having a length as uniform as possible. An object of the present invention is to provide a roof structure having a three-dimensional frame structure that can be formed using a material and that can form a curved outer shape into a more free shape.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned object, and its gist is to provide a three-dimensional frame structure and a whole or part of a roof formed into a continuous curved surface. A space to be erected on the roof is divided into a plurality of sections, two poles separated by a predetermined length are defined for each section, and a predetermined distance is set for each section based on the two poles. A plurality of center lines are extended from each pole in the meridian direction and the latitudinal direction, respectively, so as to define the two curved surfaces, and the meridian center line of one area is set to the center of the meridian direction of the other area at the boundary between adjacent areas. Each of the center lines in the meridian direction and the weft direction is provided with a dividing point at a predetermined interval, and chord members are arranged so as to connect predetermined adjacent dividing points to each center line. Matching string materials Connected by division point, the two of each zone
A roof structure, wherein the chord members arranged at opposing positions on two curved surfaces are connected to each other by a connecting member.

[0006]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a plan view of a center line used when arranging chords in a part of a roof to which the roof structure of the present invention is applied, and FIG. 2 is a side view of the center line in FIG.
FIG. 3 is a plan view showing a positional relationship among a center line, a dividing point, and a chord member in an A portion of FIG. 1, FIG. 4 is an enlarged perspective view showing a part of FIG. 3, and FIG. FIG. 6 is a side view showing a positional relationship between a center line in a latitudinal direction defining two long-distanced curved surfaces, a dividing point, and a chord member, and FIG. FIG. 7 is a plan view showing a dividing point and a chord, and FIG. 7 is a partially enlarged view of FIG. 1.

[0007] In the roof structure according to the three-dimensional frame of the present invention, as shown in FIG.
Arrange the upper chord material along the center line 2
Arrange the upper chords along the lines 1 and 22.
Lower chords are arranged along a plurality of center lines defined at predetermined intervals below 1, 12, 21, 22 and connected by upper chords and lower chords, and upper chords and lower chords arranged at opposing positions are arranged. The material is connected with the connecting material, and furthermore, the C portion formed as a curved truss beam is continuously connected to the B portion, whereby
The planar shape is a shape like a ginkgo leaf, and the three-dimensional shape is a part of a sphere, and a continuous curved roof frame structure having different curvatures in the two sections A and B can be formed. In FIG. 1, only the center line on the side facing the outside of the building, that is, the center line that is used as a reference when arranging the upper chord is shown, and the center line on the side facing the inside of the building (lower chord is The center line used as a reference when arranging them is not shown.

Hereinafter, referring to FIG. 1, a plurality of center lines 1 will be described.
The arrangement of 1, 12, 21, 22 will be described in more detail. The plurality of center lines 11 defining the curved surface of the portion A are determined so as to extend at predetermined intervals (predetermined angles) in the meridian direction on the spherical surface having the point A as a pole, and the plurality of center lines 12 are defined as the plurality of center lines 11. It is determined so as to extend at predetermined intervals in the direction of the latitude line on the spherical surface with the point A as the pole so as to intersect. The plurality of center lines 21 defining the curved surface of the portion B are determined so as to extend at predetermined intervals (predetermined angles) in the meridian direction on the spherical surface with the point B as the pole, and are defined at the boundary with the portion A. The center lines 22 are connected to the center line 12 in the direction of the latitude line, and the plurality of center lines 22 are determined to extend at predetermined intervals in the direction of the latitude line on the spherical surface having the point B as a pole so as to intersect with the plurality of center lines 21. In the connection portion between the A portion and the B portion, the center line 21 extending in the meridian direction from the point B is finely adjusted by slightly bending the tip, and is connected to the center line 12 in the weft direction of the A portion. . In addition, center lines 11, 12, 21, and 22 are provided between the portions A and B.
A center line is defined below the center line 2 at predetermined intervals (angles) so as to extend in the meridian direction and the latitude line direction as described above.

The center lines 11 and 12 thus determined
The upper chord material is arranged so as to connect adjacent division points with the intersection of the center line 21 and 22 as the division point, and the upper chord members are connected at the division point. Then, the lower chord members are similarly arranged along the center lines defined below the center lines 11, 12, 21, 22 of the A portion and the B portion, and these lower chord members are connected to each other and further opposed to each other. When the upper chord material and the lower chord material are connected by a connecting material, a roof frame structure having a continuous curved surface shape formed of curved surfaces formed based on different poles in the portion A and the portion B can be formed, and the roof frame structure is designed. It can be something that changes dynamically.

Further, in the roof structure of the present invention, the length between the intersections of the plurality of center lines 11 and the plurality of center lines 12 can be made uniform. That is, although a part of the portion A is shown in FIG. 7, the center line 12a in the latitude line direction intersects with a plurality of center lines 11a to 11e in the meridian direction defined to extend at the same predetermined interval. , The length between the intersections on the center line 12a becomes uniform, and conversely, the center line 11c in the meridian direction is a plurality of center lines in the parallel direction defined to extend at the same predetermined interval (predetermined angle). 12a-1
2c, and at this time, the length between the intersections on the center line 11c becomes uniform. This is the same for the plurality of center lines 11, 12, 21, and 22 shown in FIG.
Therefore, as described above, as shown in the plan view of FIG. 6, the intersection point 44 between the center lines 11 and 12 is set as a division point,
A plurality of upper chords 45, 45 ', 45 "are continuously provided along the center line 12 so as to connect these intersections 44, 44, and the center line 1 is provided so as to connect the intersections 44, 44.
By arranging a plurality of upper chords 46, 46 'along the line 1, the plurality of upper chords 45, 45', 45 "can be individually made members having a uniform length. , 46 '
Can all be members of uniform length, thereby reducing the time and effort involved in manufacturing the upper chords 45, 45 ', 45 ", 46, 46' and eliminating the complexity of construction. .

Next, upper chord members 15a, 1 different from FIG.
The arrangement of 5a 'will be described with reference to FIG. In FIG. 3, the center line 12 in the latitude direction and the plurality of center lines 1 in the meridian direction are shown.
1 at the dividing point 14a of the center line 12 in the latitude line direction.
On the other hand, in the center line 12 ′ in the latitude line direction, the intermediate point between the intersections with the plurality of center lines 11 in the meridian direction is defined as the division point 1.
4a '. The upper chord members 15a are arranged and connected so as to connect the adjacent division points 14a and 14a, and the upper chord members 15a 'are arranged and connected so as to connect the adjacent division points 14a' and 14a '. And dividing point 14a
And the diagonal member 16a is arranged so as to connect the two members 14a and 14a '.
Such an arrangement can also be applied to a plurality of center lines in the parallel direction as shown in FIG.
The application is applied alternately at 22 to arrange the upper chord material and the diagonal material.
When the upper chord material 15a and the diagonal material 16a are arranged as shown in FIG. 3, the lower chord material 15b and the diagonal material 16b are arranged at opposing positions as shown in FIG.
b and between the oblique members 16a and 16b may be connected by a plurality of connecting members 17.

Further, in FIG. 5, the upper center line 3 in the latitudinal direction is shown.
2 illustrates an arrangement relationship between the center line 2 and the lower center line 32 ′. In FIG. 5, a plurality of upper division points 34a are defined at predetermined intervals on the upper center line 32, and a plurality of lower division points 34b are defined at predetermined intervals on the lower center line 32 'in the same manner. The upper chords 35a are arranged similarly so as to connect the adjacent upper division points 34a, 34a, and the lower chords 35b are similarly arranged. The upper chords 35a and the lower chords 35b are appropriately connected by a connection member 37 as shown.

In the roof structure exemplified above, the upper chord material and the lower chord material are arranged in the same phase, but the plan view of FIG.
As shown in the plan view and the cross-sectional view, the upper chord material and the lower chord material may be arranged in different phases.

[0014]

According to the roof structure of the three-dimensional frame of the present invention,
The roof installation space is divided into multiple sections, two poles are defined for each section, and a plurality of center lines in the meridian and parallel directions extending on different spherical surfaces are defined based on these poles. Since the roof frame structure is formed by arranging the chords with reference to the center line, a roof frame structure having a continuous curved surface shape composed of different curved surfaces formed based on different poles can be formed. The structure can be changed in design.

In the roof structure of the three-dimensional frame according to the present invention, dividing points are provided at predetermined intervals for each center line in the meridian direction and the latitudinal direction, and predetermined adjacent dividing points are connected for each center line. Since the chords are arranged, the chords to be arranged between the dividing points of the same center line can be made of a member having a uniform length. Can be eliminated.

[Brief description of the drawings]

FIG. 1 is a plan view of a center line used when arranging chords on a part of a roof to which a roof structure according to the present invention is applied.

FIG. 2 is a side view of the center line in FIG.

FIG. 3 is a plan view showing a positional relationship among a center line, a division point, and a chord member in a portion A of FIG. 1;

FIG. 4 is an enlarged perspective view showing a part of FIG. 3;

FIG. 5 is a plan view showing a positional relationship between a center line in a latitudinal direction defining two curved surfaces separated by a predetermined length, a dividing point, and a chord member;

FIG. 6 is a plan view showing a center line, division points, and chord members arranged in a position different from that of FIG. 3 in a portion A of FIG. 1;

FIG. 7 is a partially enlarged view of FIG. 1;

FIG. 8 is a plan view showing a center line, a division point, and a diagonal member arranged in a different positional relationship from FIGS. 3 to 7;

9A is a plan view showing a center line and division points arranged in a different positional relationship from FIGS. 3 to 8, and FIG. 9B is a plan view of FIG.
It is sectional drawing which follows the dashed-dotted line bb.

[Explanation of symbols]

 A part, B part, C part Area A point, B point Extreme point 11 Meridian center line 12 Latitudinal center line 14a, 14a ', 14b, 14b' Split point 15a, 15a 'Upper chord material (chord material) 15b Lower chord material ( 17) Connecting material 35a Upper chord material (chord material) 35b Lower chord material (chord material) 45 Upper chord material (chord material) 46 Upper chord material (chord material)

Claims (1)

[Claims] 1. A three-dimensional frame structure,
A structure of a whole or a part of a roof formed into a continuous curved surface, wherein a space to be erected on the roof is divided into a plurality of sections, and two poles separated by a predetermined distance are defined for each section; 2 separated from each other by a predetermined length in each area based on two extreme points
From the poles, extend a plurality of center lines in the meridian and latitudinal directions, respectively, so as to define one curved surface, and at the boundary of adjacent areas, make the meridian center line of one area into the meridian center line of the other area. The center lines in the meridian direction and the weft direction are provided with division points at predetermined intervals, and chord materials are arranged so that predetermined adjacent division points are connected to each center line, and adjacent chords are connected. Connect the materials at the split point,
A roof structure wherein the chord members arranged at opposing positions on two curved surfaces in each of the sections are connected to each other by a connecting member.