JP3535466B2 - 3D truss frame - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional truss frame structure which forms a triangular mesh on a plane and at the same time forms a convex curved surface such as a compound curved surface such as a single curved surface or a thrust curved surface. is there.

[0002]

2. Description of the Related Art A basic frame of a three-dimensional truss frame which forms an upward convex curved surface while forming a triangular mesh is, for example, a horizontal member erected parallel to the ridge center, On a plane, it is installed in two directions inclined with respect to the horizontal timber, and consists of diagonal timber joined to the horizontal timber. Is erected.

Conventionally, as shown in FIG. 9, the diagonal member 2 is bent in accordance with the curvature of the curved surface of the frame in order to simplify the connection between the end portion of the diagonal member installed between the horizontal members and the horizontal member. Since it is joined to the horizontal member 1 in the state, both ends of the purlin support member 3 for receiving the purlin member are joined to the horizontal member 1 so as to be mounted on the upper flange of the horizontal member 1.

In this case, since the distance from the lower end of the horizontal member 1 which determines the structure of the frame to the top end of the purlin material is the sum of the composition of the horizontal member 1, the purlin support member 3 and the purlin member, This is disadvantageous in terms of air conditioning because the size of the structure increases and the volume of the internal space of the frame increases.

In addition, since the construction of the frame is large, the area of the wall around the frame is increased, the cost of the frame is increased, and the frame is thick as an appearance of the entire structure including the walls and columns supporting the frame. Make an impression.

In view of the above background, the present invention proposes a space truss frame of a form that is less effective than the conventional frame shown in FIG.

[0007]

According to the present invention, regardless of the shape of the curved surface of the entire three-dimensional truss frame, the diagonal members are erected in a straight line between the adjacent horizontal members to determine the level of the top end of the horizontal members. A space is formed between the lower surface side of the main building material that is laid so as to form the curved surface of the entire frame and the top end of the middle part of the diagonal material. By installing between the horizontal materials, it is possible to join both ends of the purlin support material so that they abut against the horizontal material.
Control the construction of the frame.

As shown in FIG. 5, which shows the outline of the present invention in comparison with FIG. 9, the purlin support member is installed between adjacent horizontal members in a curved or bent shape corresponding to the curved surface of the three-dimensional truss frame, and both ends thereof. At the middle part, it is joined to the horizontal member, passes over the diagonal member, and is supported by the diagonal member. The purlin support member is installed between adjacent horizontal members and joined to the horizontal members to have a function of stiffening the horizontal members against buckling.

Since the diagonal members are installed in a straight line between the horizontal members and the purlin supporting member is curved or bent, the top end of the purlin supporting member can be maintained while the purlin supporting member straddles the diagonal members between the horizontal members. It does not project upward from the curved surface of the entire frame determined by the level of the top of the horizontal timber, and the composition of the frame is suppressed to the sum of the composition of the horizontal material and the composition of the purlin, which is more than the conventional frame shown in Fig. 9. The height of the frame is reduced by a height equivalent to the height of the purlin support material.

As a result, the volume of the internal space of the frame is reduced, the air conditioning efficiency is improved, and the area of the wall around the frame is also reduced, so that the frame cost is reduced. Moreover, since the thickness of the frame is reduced, the thinness of the frame in the overall appearance of the structure is emphasized, and the appearance of the structure is improved.

Since the purlin support member passes between the horizontal members on the diagonal members and is supported by the diagonal members, the structure of the frame can be reduced and the purlin members do not have to be divided at the diagonal member positions. The effect of reducing the deformation of the purlin support material as a continuous beam is maintained.

Specifically, the end of the purlin support member is joined to the horizontal member with its lower flange positioned at least below the upper flange of the horizontal member, as described in claim 2.
It doesn't have to rest entirely on the top flange of the horizontal material.

When the upper flange of the purlin support material is aligned with the upper flange of the horizontal lumber, the frame composition is the sum of the horizontal material and the purlin material, which is the smallest, but the upper flange of the purlin support material. Even if is located above the upper flange of the horizontal member, if the lower flange of the purlin receiving member is located below the upper flange of the horizontal member, the composition of the conventional frame is reduced.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A three-dimensional truss frame structure of the present invention includes a horizontal member 1 which is installed in parallel with each other as shown in FIGS. The diagonal member 2 is erected and joined to the horizontal member 1, and at least a part of the diagonal member 2 forms a triangular mesh that curves upward.

Since the frame structure of the three-dimensional truss forms a cylindrical curved surface in the drawing, the horizontal member 1 is laid parallel to the building center shown by the alternate long and short dash line in FIG. Depending on the form of the
In some cases, adjacent horizontal members 1, 1 are not parallel to each other.

A diagonal member 2 is provided in a direction intersecting with the horizontal member 1.
A purlin support member 3 is erected through an intermediate position between the nodes. A purlin material 4 is laid on the purlin support material 3 in parallel with the horizontal material 1, and a roofing material 5 is laid thereon. In the examples shown in FIGS. 6 and 7, the purlin support member 3 is erected in a direction perpendicular to the building center, and the purlin material 4 is laid in parallel to the building center.

The diagonal member 2 has a linear shape between adjacent horizontal members 1, 1 as shown in FIG. 3 which is a sectional view taken along the line yy of FIG. 6 and FIG. 5 which is a perspective view of a part thereof. It is erected as it is, and is joined so as to abut against the side surface of the horizontal member 1.

As shown in FIGS. 3 and 4, a metal joint 6 is arranged at a node position where the horizontal member 1 and the diagonal member 2 intersect, and the horizontal member 1 and the diagonal member 2 are butted to and welded to the metal joint 6, respectively. Or a joint plate 7 extending over the both is joined by a bolt.

The joint metal 6 is assembled from the web plate 6a, the flange plate 6b, etc. according to the cross-sectional shape of the horizontal member 1 and the diagonal member 2, that is, the type of shaped steel and the combination thereof, and the horizontal member 1 and the diagonal member 2 are assembled. The respective webs and flanges of the above are butted against the web plate 6a and the flange plate 6b, respectively. The joint plate 7 straddles between each web of the horizontal member 1 and the diagonal member 2 and the web plate 6a, and between each flange and the flange plate 6b.

As shown in FIGS. 1 and 5 which are sectional views taken along the line xx of FIG. 6, the purlin support members 3 are curved or bent corresponding to the curved surface of the three-dimensional truss frame, and are adjacent to each other in a curved state. It is installed between the horizontal members 1 and 1. Both ends of the purlin support member 3 are joined to a gusset plate 8 or the like joined to the side surfaces of the horizontal members 1 and 1, and an intermediate portion passes over the diagonal member 2 and is supported by the diagonal member 2.

In FIG. 1, when the purlin support member 3 is curved in accordance with the curvature of the curved surface including the entire purlin support member 4 laid on the purlin support member 3, the upper flange 3a at the end of the purlin support member 3 is Since it is located above the upper flange 1a of the horizontal member 1,
As shown in Fig. 2- (a), the horizontal member 1 is attached to the gusset plate 8.
A height greater than the distance between the upper flange 1a and the lower flange 1b is given, and the web 3c of the purlin support member 3 is joined near the upper flange 1a of the horizontal member 1, but the purlin support member 3 and the gusset plate 8 are joined together. The joining method does not matter.

In order to suppress the construction of the frame composed of the horizontal member 1, the diagonal member 2, the purlin support member 3 and the purlin member 4, at least the lower flange 3b of the end of the purlin support member 3 has at least the horizontal member 1.
It suffices if it is joined to the horizontal member 1 while being positioned below the upper flange 1a.

As shown in FIG. 2 (b), the middle part of the purlin support member 3 is to be joined to the mounting plate 9 fixed on the upper flange 2a of the diagonal member 2 by the flanges 3a, 3b and the web 3c. Is supported by the diagonal member 2. FIGS. 2- (a) and (b) show the case where the channel steel is used as the purlin support member 3 alone or in combination.

In the case of the embodiment in which the purlin support member 3 is erected in a direction perpendicular to the ridge center, the purlin support member 3 is provided on the horizontal member 1 erected between the adjacent nodes in the ridge center direction as shown in FIG. Since the horizontal member 1 is constrained by intersecting at two points in the direction, the horizontal member 1 is most stabilized against buckling.

In FIG. 6, the broken line shows the buckling prevention member 10 of the diagonal member 2 which is installed in parallel with the diagonal member 2. As shown in FIG. 8, the buckling prevention member 10 is installed between the horizontal member 1 and the diagonal member 2 as a unit.
And a gusset plate 11 protruding from the side surface of the diagonal member 2.

[0026]

EFFECTS OF THE INVENTION By installing diagonal members in a straight line between adjacent horizontal members, a space is formed between the lower surface side of the main building and the top of the middle portion of the diagonal members, and this space is used. The curved or bent purlin support material is installed between the adjacent horizontal materials, so it is possible to join both ends of the purlin support material to the horizontal material so that the frame structure is composed of the horizontal material. It can be suppressed to the sum of the composition of the main building materials.

As a result, the volume of the internal space of the frame is reduced, the air conditioning efficiency is improved, and the area of the wall around the frame is also reduced, so that the frame cost is reduced. Moreover, since the thickness of the frame is reduced, the thinness of the frame in the overall appearance of the structure is emphasized, and the appearance of the structure is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along line xx of FIG. 6 showing the relationship between a purlin receiving member, a horizontal member, and a diagonal member.

2A is an enlarged view showing details of a horizontal member portion of FIG. 1, and FIG. 2B is an enlarged view showing details of a diagonal member portion of FIG.

3 is a cross-sectional view taken along the line yy of FIG. 6 showing the relationship between the diagonal member and the horizontal member.

FIG. 4 is a plan view showing a joint portion between the diagonal member and the horizontal member of FIG.

FIG. 5 is a perspective view showing a erection state of a diagonal member and a purlin receiving member between adjacent horizontal members.

FIG. 6 is a plan view showing an example of a three-dimensional truss frame.

7A is an elevation view in the column direction of FIG. 6, and FIG. 7B is an elevation view in the span direction.

FIG. 8 is an elevational view showing a situation where the buckling prevention member is installed.

FIG. 9 is a perspective view showing a erection state of a diagonal member and a purlin support member between adjacent horizontal members in a conventional frame structure.

[Explanation of symbols]

1 …… horizontal material, 1a …… upper flange, 1b …… lower flange, 2 …… oblique material, 2a …… upper flange, 3 …… purlin support material, 3a …… upper flange, 3b …… lower flange, 3c ......
Web, 4 ... Purlin material, 5 ... Roofing material, 6 ... Joining metal, 6a ... Web plate, 6b ... Flange plate, 7 ... Joint plate, 8 ... Gusset plate, 9
…… Mounting plate, 10 …… Buckling prevention material, 11 …… Gusset plate.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-4065 (JP, A) Japanese Patent Publication No. 38-18283 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04B 1 / 19,1 / 32,1 / 58 E04B 7 / 00,7 / 08

Claims (2)

(57) [Claims] 1. A horizontal member that is installed in parallel with each other, and a diagonal member that is installed in two directions in a plane with an inclination with respect to the horizontal member and that is joined to the horizontal member so as to be convex upward at least partially. A three-dimensional truss structure that forms a curved triangular mesh, passes through the middle position between the nodes of the diagonal timber, and has the purlin support material installed in the direction intersecting the horizontal timber, and the purlin material is laid on the purlin support material. In, the diagonal members are installed in a straight line between the adjacent horizontal members, and the purlin support members are installed between the adjacent horizontal members in a curved or bent shape corresponding to the curved surface of the three-dimensional truss frame, and the horizontal members are attached at both ends. Can be matched to the side of
Is joined to cormorants, pass over diagonal member at the intermediate portion, the three-dimensional truss Frames are supported on the diagonal member. 2. The three-dimensional truss frame according to claim 1, wherein the end of the purlin support member is joined to the horizontal member with its lower flange positioned below the upper flange of the horizontal member.