JPH0518993B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a membrane roof structure that is applied to various sports, entertainment facilities, exhibition halls, and the like.

(Prior art) As shown in Fig. 13, a conventional membrane roof structure has
Either place a membrane roof b on a frame a assembled from highly rigid members, or replace a column c inside and place a membrane roof d using the upper part of the column as a fulcrum, as shown in Figure 14. Alternatively, a sealed membrane structure as shown in FIG. 15 is used, and the air pressure P inside the membrane roof e is made higher than the external pressure Q to maintain the membrane roof.

(Problems to be Solved by the Invention) However, when a frame is used as shown in FIG. 13, the weight of the frame itself becomes large;
Since the structure is large-scale, it becomes uneconomical if the span is large.

Furthermore, if columns are arranged inside as shown in FIG. 14, the columns cannot be used for stadiums or the like because the columns are in the internal space, and the use is restricted.

Furthermore, as shown in Figure 15, when using air pressure, the internal pressure must always be higher than the external pressure.
Maintenance costs increase.

(Means for Solving the Problems) The present invention relates to a membrane roof structure proposed in order to solve the above problems. The inner ends of the upper and lower main cables are connected to a cable supporting member disposed at the center of the structure, and the roof membrane is supported on the upper main cable or the lower main cable. This is to solve the problem of.

(Function) Since the membrane roof structure according to the present invention is configured as described above, the upper main cable, the lower main cable, the cable support, and the roof membrane are assembled on the ground, and each of the above is assembled using the pillars as fulcrums. By pulling the cable, the membrane roof can be raised, and the membrane roof is supported by the tension of the upper and lower main cables.

In addition, the inner ends of the upper and lower main cables, which are arranged radially and whose outer ends are connected to the outer peripheral column members, are connected to the cable support member arranged at the center of the membrane roof structure. The cables do not overlap each other.

(Effects of the Invention) As described above, according to the present invention, a membrane roof structure is provided with upper and lower main cables whose outer ends are connected to outer peripheral pillars,
The structure consists of a cable supporting material placed at the center of the structure that connects the inner ends of the main cables, and a roof membrane held on the upper or lower main cables. Column-free membrane roof structures can be constructed, and the use of cables reduces weight and eases assembly.
This makes disassembly easier, and there is no need to maintain the internal pressure of the structure higher than the external pressure, unlike in conventional sealed structures, and maintenance costs can be reduced.

In addition, the inner ends of the radially arranged upper and lower main cables are connected to the cable support material arranged at the center of the membrane roof structure, so that the main cables are arranged in a predetermined position and in an orderly manner. There is no possibility of polymerization or entanglement with each other.

(Example) The present invention will be described below with reference to the illustrated embodiments.

In FIGS. 1 and 2, reference numeral 1 denotes an outer peripheral column member arranged along the circumference, and an upper main cable 2 and a lower main cable 3 whose outer ends are connected to the column member 1.
The inner end of the cable is connected to a cable support member 4 disposed at the center of the membrane roof structure, and a connecting member 5 is connected in a lattice shape between the upper and lower main cables 1 and 2. A roof membrane 6 is supported.

In the figure, 7 is a restraining member, and 8 is a connecting member that connects each of the main cables in the circumferential direction.

3 to 6 show respective embodiments of the cable support member 4. In the embodiment shown in FIG. In the embodiment shown in FIG. 4, the cable support member 4 is formed in the shape of a disk, and in the embodiment shown in FIG.
is formed in a ring shape. Further, in the embodiment shown in FIG. 6, a pair of upper and lower ring bodies 4d and 4e are connected by a connecting member 4f.

FIG. 7 shows another embodiment of the present invention, in which the connecting portions of the upper and lower main cables 2, 3 to the outer peripheral column 1,
The lower main cable 3 and the upper main cable 2 are radially connected by connecting members 5.

In the figure, parts equivalent to those of the above embodiment are given the same reference numerals.

8, 9 and 10 show further embodiments of the invention, in which the roof membrane 6 is held on the lower main cable 3 in the embodiment shown in FIGS. 1 and 7. .

In the drawings, parts equivalent to those of the above embodiments are given the same reference numerals.

As described above, according to the embodiment, the membrane roof structure is arranged such that the outer peripheral column 1 and the cable support member 4 are disposed at the center of the structure, and the cable support member 4 is arranged radially between the support member 4 and the column 1. Since it is composed of the connected upper and lower main cables 2 and 3 and the roof membrane 6 supported by either one of the upper and lower main cables 2 and 3, a large-span membrane roof structure with no pillars in the internal space is constructed. It can be used in all-weather stadiums, plazas, etc., and since it does not use a frame like conventional methods, it is light in weight and easy to assemble.
It is easy to disassemble and can be used as a temporary roof for event halls, exhibition halls, mobile theaters, etc. Furthermore, unlike conventional closed-type structures, there is no need to maintain the internal pressure higher than the external pressure, making maintenance and management easier.

In addition, since the inner ends of the upper and lower main cables 2 and 3 arranged radially are connected to the cable support material, the main cables are arranged in an orderly manner at a predetermined position, and are prevented from overlapping and entangling each other. Never happened.

Note that FIG. 11 shows a rainwater drainage system when the roof membrane 6 is supported by the upper main cable 2, and the cable support member 4 is configured as a bottomed cylinder with an open upper end surface. A drainage gutter 9 communicating with the support member 4 is provided along the connected lower main cable 3, and rainwater flowing down along the roof membrane 6 and flowing into the support member 4 is drained from the drainage gutter 9. It is something that is drained.

FIG. 12 shows a rainwater drainage system in which a roof membrane 6 is supported by the lower main cable 3. It is arranged so as to cover the lower bottom part of the roof membrane 6 and to be inclined downward from the bottom part toward the outer column material 1 side, so that rainwater flows down along the roof membrane 6.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a membrane roof structure according to the present invention, and FIG. 2 is a partially cutaway perspective view thereof.
3 to 6 are perspective views showing the joints between the cable support member and the upper and lower main cables, respectively; FIG. 7 is a vertical cross-sectional side view showing another embodiment of the membrane roof structure according to the present invention; and FIG. The figure is a vertical sectional view showing still another embodiment of the membrane roof structure according to the present invention, FIG. 9 is a partially cutaway perspective view, and FIG. 10 is a membrane roof structure according to the present invention. 11 and 12 are vertical sectional views showing still other embodiments of the invention, and FIGS. 13 to 15 are longitudinal sectional views showing respective embodiments of the rainwater drainage system for membrane roof structures according to the present invention Each figure is a longitudinal sectional view of a conventional membrane roof structure. 1... Outer column material, 2... Upper main cable, 3...
...lower main cable, 4...cable support material, 6...
...Roof membrane, 9...Drainage gutter.

Claims (1)

[Claims] 1. The inner ends of the upper and lower main cables, which are arranged radially and whose outer ends are connected to the outer peripheral pillars, are connected to the cable support member arranged at the center of the structure. A membrane roof structure characterized in that a roof membrane is supported on the upper main cable or the lower main cable. 2. The cable support member is formed into a bottomed cylindrical body with an open upper end surface, and the roof membrane is supported on the upper cable connected radially between the cable support member and the outer peripheral pillar member, and A membrane roof structure according to claim 1, wherein a drainage member is connected to the cable support member.