JPH0481034B2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a dome with an opening/closing roof surface.

``Conventional Technology'' Most conventional all-weather sports stadiums have fixed roofs, and the interior is a closed space. In addition, the development of air membrane structures has made it possible to create large-space structures, and the use of Teflon membranes as roofing materials has made it possible to create bright indoor spaces. On days when the weather is still nice, people tend to look out into the open space under the blue sky.

In order to meet these demands, there are a few domes with roofs that can be opened on sunny days and closed on rainy and windy days, and whose roofs can be opened and closed depending on the weather and conditions of use. It has been developed.

The dome roof surface 1 shown in FIGS. 7a and 7b is constructed by dividing it into a plurality of circular arcs, and except for the fixed roof part 1a that does not move with respect to the central post 3 and the ring-shaped frame wall 2, the movable roof part 1b is constructed. The movable roof part 1b is moved toward the fixed roof part 1a (Fig. a) when assembled horizontally slidably, and the movable roof part 1b is opened when the movable roof part 1b is stacked and stored (Fig. b).

In addition, 4 in the figure is a large truss attached to the central post 3 from the outside on the open side in order to prevent the building from falling due to eccentric loads during storage.

In addition, in the case shown in FIGS. 8a and 8b, the dome roof surface 5 is divided into two parts in the radial direction, with the outer part being a fixed roof part 5a and the inner part being a movable roof part 5 having a plurality of circular arcs.
b,..., and the movable roof parts 5b,... can be retracted to a predetermined position on the fixed roof part 5a by a guide mechanism, and the movable roof part 5b is moved outward (Figure a) to replace the fixed roof. 5a (b)
), an attempt was made to open the movable roof portion 5b, .

``Problems to be Solved by the Invention'' However, in the case of the one shown in FIG. 7, (i) the roof is heavy and the cost of the movable device increases.

(ii) The open parts are unevenly distributed in the plane.

(iii) Limited open area (approximately 66% in this example).

(iv) A large truss is required to prevent overturning in the open part, which has the disadvantage of requiring additional facilities outside the frame.

In addition, in the case of the one shown in FIG. 8, (i) the roof is heavy and the cost of the movable device increases;

(ii) The open area is small at 25% of the dome area.

It has the following problems.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and its objectives are to reduce the weight of the roof, enlarge the open area, and simplify the auxiliary equipment. The aim is to provide a new dome with an opening/closing roof surface.

"Means for Solving the Problems" In order to achieve the above object, the roof opening/closing dome of the present invention has a roof opening/closing part set in a predetermined range centered on the apex of the dome roof, and a membrane material on the upper surface. An umbrella mechanism has an umbrella mechanism in which the base end of an upper chord member made of flexible members arranged radially in a radial manner is pivoted to the upper part of the center bundle member so as to be rotatable in the downward closing direction. is hung vertically between the lower ends of the center bundle material, and a cable for introducing tension as a lower chord material with one end fixed to the tip of the upper chord material is inserted and attached, and the other end is attached to a roller disposed at the bottom of the center bundle material. The center of the dome is connected to a winch installed on a fixed plate on the beam truss, and a guide rail for roller running attached to the tip of the upper chord is installed between the plate and the fixed roof section, and each upper chord is This is a tension membrane structure in which one end of the cable is fixed at the tip and the other end of the cable for opening and closing the umbrella is connected to a winch installed on the plate.

In addition, the roof opening/closing part, which is set in a predetermined range around the apex of the dome roof, is connected to the base end of the upper chord member, which is made of radially arranged flexible members with membrane material stretched on the upper surface, to the upper part of the center bundle member of the ring body. The lower surface of the upper chord member of the umbrella mechanism is pivoted so as to be rotatable in the lower closing direction, and the center bundle member is fitted to the stay reinforcing post set up on the plate fixed on the beam truss with the center of the dome. Intermediate bundle members are vertically arranged at predetermined intervals, and a tension introducing cable serving as a lower chord member with one end fixed to the tip of the upper chord member is inserted and attached between the lower ends of the intermediate bundle members, and the other end is attached to the center bundle member. It is connected to a winch installed on the plate via a roller installed at the bottom, and a guide rail for running the roller attached to the tip of the upper chord is installed between the plate and the fixed roof section, and at the tip of each upper chord. One end of the cable is fixed, and the other end of the cable for opening and closing the umbrella is connected to a winch installed on the plate, forming a tension membrane structure.

``Function'' When the upper chord material is bent and compressed by winding the tension introduction cable of the lower chord material to form a curved shape, appropriate pretension is introduced into the membrane material, resulting in a lightweight roof. The opening and closing can be controlled simply by winding up the winch, and the attached equipment is simple, and furthermore, the open portion can be set uniformly and large in plane.

"Example" This will be explained in detail below based on the drawings.

Figure 1 a, b, Figure 2 a, b are longitudinal sectional views and plan views of the dome of the present invention when it is closed and opened, Figure 3 a, b
is an enlarged detailed view of the main mechanism when closed and opened.

6 in the figure is the dome roof surface, and the center part is the opening/closing part 6
a. The outer peripheral part is a fixed roof part 6b, and the opening/closing part 6a may extend over the entire surface of the dome roof surface 6, and as shown in FIGS. 1 and 2, it converges toward the center like an umbrella ( Figure a), and the focusing outer periphery is opened (Figure b).

Such an umbrella mechanism is shown in detail in FIG.

In the figure, 7 is a radially arranged upper chord member made of a flexible material such as a steel frame. Ru.

Intermediate bundle members 10, . It is passed as a lower chord material during insertion and assembly.

The base end of the cable 11 is connected via a roller 12 attached to the central bundle member 8 to a winch 14 disposed on a plate 13, which will be described later.
4 to tension the cable 11 and bend and compress the upper chord member 7 to form a curved shape. Appropriate pretension is introduced into the membrane material 9, and the roof of the rationally designed lightweight tension membrane structure is created. is configured.

On the other hand, a guide rail 15 is installed in the opening of the opening/closing part 6a with a plate 13 interposed in the center in accordance with the radial arrangement of the chord members 7.

The guide rail 15 has a support 1 at the tip of the upper chord member 7.
This is for running a roller 16 disposed through the roller 7.

In the figure, 18 is a cable for opening and closing the umbrella fixed to the tip of the upper chord member 7, and the other end is connected to a winch (not shown) arranged on the plate 13.

It is preferable that the above-mentioned winch is used in combination with the winch 14 described above, and it is also necessary that the winch has a function of maintaining tension without causing droop in the cable during unwinding.

A stopper 19 is attached to the tip of the guide rail 15 to prevent derailment.

Since it has the above-mentioned configuration, when it is closed, the roof has a tension membrane structure that pulls the center part against the plate 13 (Figure a), but when it is opened, the cable 11 is loosened to release the tension. At the same time, as the cable 18 is wound up, the roof converges and stands up like an umbrella (Figure b), leaving the area other than the converging portion open.

There is no problem in focusing since the roof surface is made of a membrane material.

Returning to the closed state can be achieved by applying tension to the cable 11 and at the same time rewinding the cable 18.

The dome building in the closed and open modes is shown in FIGS. 5a and 5b.

In the above-mentioned configuration, the focused standing posture is maintained by winding the cable 18, but this is not safe in a large-scale case or in a case where there is strong wind.

In such a case, it is necessary to take the reinforcing means shown in FIG.

That is, as shown in the figure, a post 21 is erected on a plate 13 supported by a truss 20 (which may also be used as a guide rail 15) and reinforced with a stay 22, and the central bundle member 8 is attached to a ring body. and is slidably assembled to the post 21.

In this way, when the condensation stands up (see figure b), the upper end is supported by the post 21, resulting in stability.

Note that the post 21 also serves as a quick guide when standing up.

The dome building in the closed and open modes is shown in FIGS. 6a and 6b.

"Effects of the Invention" As is clear from the above, the present invention provides various effects as listed below.

(i) The area of the open part of the roof can be set freely, and it is also possible to open the entire dome (excluding the central storage area).

(ii) The retractable roof part is lighter in weight, and the equipment is also lighter, reducing costs.

(iii) Since the roof is light, the substructure can also be economically designed. By applying tension to the cable material of the lower chord, it is possible to economically design the opening/closing room root, introduce tension in the membrane material, and adjust the amount of pretension.

[Brief explanation of the drawing]

Figure 1 a, b, Figure 2 a, b are longitudinal sectional views and plan views of the dome of the present invention when it is closed and opened, Figure 3 a, b
is an enlarged detailed view of the main mechanism when closed and opened, Fig. 4a,
b is a vertical sectional view of another dome of the present invention when closed and opened; FIGS. b,
Figures 8a and b show the closing of a conventional roof opening/closing dome.
FIG. 3 is a plan view showing an open state. 1...Dome roof surface, 1a...Fixed roof part, 1b...
Movable roof section, 2... Ring-shaped frame wall, 3... Central post, 4... Large truss, 5... Dome roof surface, 5a... Fixed roof section, 5b... Movable roof section, 6... Dome roof surface, 6a... Opening/closing section, 6b...Fixed roof part, 7...Top chord material, 8...Central bundle material, 9...Membrane material, 10...Intermediate bundle material,
DESCRIPTION OF SYMBOLS 11...Tension introduction cable, 12...Roller, 13...Plate, 14...Winch, 15...Guide rail, 16...Sliding part, 17...Support, 18
...cable, 19...stopper, 20...truss,
21...post, 22...stay.

Claims (1)

[Scope of Claims] 1. A roof opening/closing part set in a predetermined range centered on the apex of the dome roof is connected to the base end of the upper chord member made of radially arranged flexible members with membrane material stretched on the upper surface of the bundle member. Intermediate bundle members are vertically disposed at predetermined intervals on the lower surface of the upper chord member of the umbrella mechanism whose upper part is pivoted so as to be rotatable in the downward closing direction, and one end is fixed to the tip of the upper chord member between the lower ends of the intermediate bundle member. The cable for introducing the tension as the lower chord material is inserted through and attached, and the other end is connected to the winch installed on the plate fixed on the beam truss at the center of the dome via the roller provided on the center bundle material. A guide rail for roller running attached to the tip of the upper chord is installed between the plate and the fixed roof, and a winch is installed on the plate with one end of the cable for opening and closing the umbrella fixed to the tip of each upper chord. A dome with an opening/closing roof surface characterized by a tension membrane structure connected to a dome. 2 The roof opening/closing part set for a predetermined range centered on the apex of the dome roof is placed below the base end of the upper chord member made of radially arranged flexible members with membrane material stretched on the upper surface to the upper part of the center bundle member of the ring body. The umbrella mechanism is pivoted so as to be rotatable in the closing direction, and the central bundle member is fitted to a stay reinforcing post set up on a plate fixed on the beam truss at the center of the dome. Intermediate bundle members are hung vertically at intervals, and a cable for introducing tension as a lower chord member with one end fixed to the tip of the upper chord member is inserted and attached between the lower ends of the intermediate bundle members, and the other end is attached to the lower end of the center bundle member. A winch installed on the plate is connected to the winch through a roller disposed on the plate, and an attached roller running guide rail is installed at the tip of the upper chord between the plate and the fixed roof, and one end is attached to the tip of each upper chord. A dome with an opening/closing roof surface, characterized in that the other end of a fixed umbrella opening/closing cable is connected to a winch installed on the plate to form a tension membrane structure.