JPH0810110Y2 - Roof of dome structure with single tube truss frame - Google Patents

Description

[Detailed description of the device] Industrial field of application This device is a large space temporary building used as an exhibition pavilion at a large-scale exhibition, especially a single pipe truss assembled by connecting temporary single pipes with clamps. The present invention relates to a roof constructed on a large space shell dome structure in which a set is constructed.

Conventional technology A large space shell dome structure with the appearance as shown in Fig. 2 is planned as an exhibition pavilion, and in consideration of its temporary character, it is a temporary single pipe that is generally used as a material for temporary scaffolding. It is already known to construct a framework as shown in Fig. 3 by connecting the two with clamps (eg NIKKEI ARCHITECTURE, October 17, 1988, P132-13).
7).

The construction of such a single-pipe truss framework for a large-space shell dome structure consists of assembling a large-scale single-pipe scaffold on the entire inner surface of the dome and connecting the single-pipes with clamps on the ground of the site site to assemble the single-pipe truss. , The grounded single-pipe trusses are hung one after another with a truck crane in a well-balanced manner and set, and the connecting members in the depth direction and the single-pipe truss are tightly connected one by one, and finally this bolt tightening joint is made. The framework is completed by the method of doing.

Problems to be Solved by the Invention The large-space shell dome structure based on the single-pipe truss shaft assembly described above, no matter how strongly the individual clamps are fastened,
Originally, since the free clamp itself has a slight amount of play, the amount of deformation of the entire shell dome structure using a huge number of clamps is quite large, and it is difficult to expect high accuracy.

Moreover, as shown in FIG. 4 as an example of the structure of the main part, the single-pipe truss is a single-pipe joint for both the upper chord member a and the lower chord member b. In this configuration, two or three universal clamps 3 ... Are connected. The single pipe of the lattice material c and the horizontal connecting material d has a length slightly protruding outward from the upper and lower chord members a and b, and is also connected by a clamp. Therefore, so to speak, it is not possible to expect the completion of a flat roof construction base material, and therefore a new problem to be solved is how to construct the roof surface with high precision.

Means for Solving the Problems As a means for solving the above-mentioned problems of the prior art, a roof of a large space shell dome structure by a single pipe truss shaft assembly according to the present invention is shown in FIG. As shown, in the roof surface of the dome structure axially assembled by the single pipe truss assembled by connecting the single pipes with the clamp, one end of the screw shaft 4a is screwed into one side of the female screw member 4b in the form of a sleeve, and The rod-shaped purlin mounting hardware 4 in which the male screw member 4c is screwed and connected to the other side of the female screw member 4b, and the purlin support portion 4d is formed at the tip end portion of the male screw member 4c, is formed on the uneven structure of the shaft by the single pipe truss. The length is not affected, and the turnbuckle mechanism is configured. The other end of the screw shaft 4a of the purlin mounting hardware 4 is fixed to the clamp 3 attached to the single pipe which is the upper chord member a of the single pipe truss. Is erected outward from the shaft assembly, a purlin material 5 is attached to the purlin support portion 4d of the purlin mounting hardware 4, a roof base is made on the basis of the purlin material 5, and a roof plate is placed on it. It is characterized by being.

Action Even if irregularities due to the projection of a single pipe occur on the outer surface of the framework by the single-pipe truss 1, the length is not affected by such irregularities. The main base material 5 is supported, and a roof base is constructed based on the main base material 5.

In addition, the accuracy error of the shaft assembly by the single pipe truss 1 can be freely adjusted in a wide range by the operation of the turnbuckle mechanism of the purlin-attached metal fitting 4 to be installed.

Embodiment Next, an embodiment of the present invention shown in the drawings will be described.

Reference numeral 4 in FIG. 1 denotes a purlin attachment fitting. A screw shaft 4a at one end of the purlin material mounting bracket 4 is screwed and fixed to a nut 10 welded to one piece of a universal clamp 3 attached to a single pipe which is an upper chord member a constituting the single pipe truss 1, and the single pipe truss is fixed. Standing outward from the framework of 1. The screw shaft 4a
A sleeve-shaped female screw member 4b is screwed into and connected to this. At the other end of the female screw member 4b, a so-called expandable turnbuckle mechanism is constructed in which a male screw member 4c having a reverse thread to the screw shaft 4a is screwed and connected to have a length that is not affected by the unevenness of the shaft assembly. ing. The male screw member 4c is a lock nut
It is fixed to the female screw member 4b at 11. The tip portion of the male screw member 4c is bent at a substantially right angle to form a purlin support portion 4d.
A purlin 5 using an angle of about 65 mm is attached with a nut 12. By the way, the length from the center of the clamp 3 to which the purlin mounting hardware 4 is attached to the purlin support portion 4d is about 350 mm, and the length of the roof base is raised to the outside of the framework by the single pipe truss 1 by this length. It is supported by the shape. The length of the purlin attachment 4 can be adjusted in a wide range by turning the female screw member 4b by a turnbuckle mechanism.

Metal lumber 6 is installed on the outer surface of the main building material 5 at a pitch corresponding to the width of a wood wool cement plate, which will be described later.
The wooden wool cement board 7 is laid in the cell defined by, and the asphalt roofing 8 is applied to the outer surface of the cell to make a roof substrate, and the roof panel 9 made of galvanium steel plate is hung on the outermost surface of the cell. ing.

Advantageous Effects of the Present Invention As described in detail above together with the embodiments, the roof of the large space shell dome structure by the single pipe truss shaft assembly according to the present invention is constructed by the single pipe truss 1. Therefore, it is easy to perform with a small number of man-hours because the roof base 9 is made on the outer surface of the frame that has severe irregularities and the roof base 9 is raised to a certain height with the metal fittings for the main building material 4 so that it is not affected by the irregularities. Can be installed efficiently.

Then, even if the single pipe truss 1 is used as a base for a poorly accurate frame, the position of the main frame 5 supported by the main frame mounting hardware 4 having a turnbuckle mechanism can be accurately adjusted against deformation of the frame and accuracy error. It can be adjusted or modified to build a highly accurate roof.

[Brief description of drawings]

FIG. 1 is an elevation view showing a main part of a roof structure according to the present invention, FIG. 2 is a perspective view showing an appearance of an exhibit pavilion to which the roof is applied, and FIG. 3 is a frame assembly of the pavilion. FIG. 4 is a front view partially showing an example of the single pipe truss. 2 ... Single pipe, 3 ... Clamp 1 ... Single pipe truss, 4 ... Purlin mounting hardware 5 ... Purlin material, 9 ... Roof plate

Claims (1)

[Scope of utility model registration request] 1. On a roof surface of a dome structure axially assembled by a single pipe truss assembled by connecting single pipes with a clamp, one end of a screw shaft 4a is screwed into one side of a sleeve-shaped female screw member 4b, The rod-shaped purlin mounting hardware 4 in which the male screw member 4c is screwed and connected to the other side of the female screw member 4b, and the purlin support portion 4d is formed at the tip end portion of the male screw member 4c is the unevenness of the shaft assembly by the single pipe truss. Has a length that is not affected by the above, and is configured as a turnbuckle mechanism, and the other end of the screw shaft 4a in the purlin mounting hardware 4 is attached to a clamp 3 attached to a single pipe that is the upper chord member a of the single pipe truss. It is fixed and stands outward from the frame, the purlin support material 4 is attached to the purlin support portion 4d of the purlin mounting hardware 4, and the roof base is made on the basis of the purlin material 5, and the roof plate is formed thereon. That 9 is thatched The symptom, the roof of the dome structure of single tube truss axis set.